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Code of Practice for

1. 34 34 34 36 36 37 38 39 41 41 42 43 44 46 46 47 48 49 Section A General Requirements ls 1 1 1 1 1 1 2 1 2 1 1 2 2 1 3 1 3 1 1 3 2 1 4 1 4 1 1 4 2 1 4 3 1 4 4 1 4 5 Introduction Title The title of this document is called the Code of Practice for Working Safely at Height Scope This Code of Practice provides practical guidance on the measures and good practices required to prevent persons from falling while working at height The recommendations in this Code of Practice are suitable across all industry sectors Working at depth carries similar risks as working at height and as such this Code of Practice will also be relevant However users of this Code need to be aware that persons working at depth are also exposed to other significant hazards such as escaping gases collapsing sides and falling objects which are not covered by this Code of Practice Purpose The objective of this Code of Practice is to enhance the standard of safety in workplaces where there is a risk of falling from height or into depth This Code of Practice emphasises the use of the risk management framework to identify and control the hazards associated with work activities carried out at height This Code also describes and illustrates a variety of fall control measures and devices which can be adopted for use when risk of falling is present However users of this code should be aware that new dev
2. The effectiveness of PPE as a control measure is dependent on the correct equipment being chosen fitted and worn properly at all times when required by users PPE should be selected taking into consideration the following factors e The type of hazard Areas of the body that require protection The degree of protection required Ease of use comfort and convenience e Reliability and Ease of maintenance Ensuring Control Measures are Safe and Do Not Introduce New Risks It is important that the control measures selected do not introduce new hazards or expose workers who are installing erecting or removing these control measures such as scaffolding to a greater risk than the one it is designed to control Maintaining and Re evaluation of Controls The control measures implemented must be regularly monitored and reviewed to ensure that they are effective and are in good working condition 8 Inspection and Maintenance 8 1 8 2 8 3 8 4 A thorough visual inspection and checks on equipment usage is important for ensuring that the equipment is free from observable defects Equipment that have exceeded their serviceable life span or passed their expiry date should not be used A maintenance programme should be established and implemented to periodically inspect and maintain both operational and safety equipment in good working condition The maintenance programme shall include the following components e Aninv
3. 11 12 12 12 12 13 14 14 16 17 17 17 19 Section B Fall Control Measures Chapter 13 Access to and Egress from Work Areas 13 1 Access and Egress Risk and Assessment 13 2 Access and Egress Safety Considerations 13 3 Roof Access 13 4 Guarding of Openings Chapter 14 Edge Protection 14 1 Perimeter Guard Railing Chapter 15 Fall Protection Systems 15 1 Scaffolds 15 2 Tower Scaffolds 15 3 Mobile Elevated Work Platforms Hoists 15 4 Suspended Gondola 15 5 Mast Climbing Work Platforms Chapter 16 Individual Fall Prevention Systems 16 1 Industrial Rope Access Systems 16 2 Travel Restraint Systems Chapter 17 Fall Arrest Systems 17 1 Individual Fall Arrest Systems Personal Protective Equipment 17 2 Fall Arrest System Limitations 17 3 Instruction and Training for Workers Using Individual Fall Arrest Systems 17 4 Hazards of Fall Arrest Systems 17 5 Rescue of Workers Who Use Individual Fall Arrest Systems 17 6 Fall Arrest System Components Harnesses Lines and Lanyards 17 7 Inspection of Fall Arrest Systems Chapter 18 Ladders and Step Platforms 18 1 Ladders and Step Platforms 18 2 Portable Ladders 18 3 Step Platforms 18 4 Safety Guidelines for Ladders Chapter 19 Hazards of Working at Rooftop 19 1 Fragile Brittle Roofing Chapter 20 Acknowledgements Chapter 21 List of References Chapter 22 Other Useful Contacts 20 20 20 20 21 22 22 24 24 25 26 28 29 30 30 32
4. The access points must always be covered when not in use Where guard rail systems are intended to be used in conjunction with steel structures or tilt up construction designers and builders should plan for the guard rails and fixings to be attached to the panels prior to the structures being raised from the edge protection that is being used This is in order to reduce the risk of a person falling from one level to another Scaffold may be used as fall protection around the edge of the roof by incorporating guard railing as edge protection into the scaffold 23 24 15 Fall Protection Systems 15 1 Scaffolds 15 1 1 Scaffolds are any temporary structures On and from which a person performs work in any workplace or e Which enable a person to access the location to perform work or e Which enable materials to be taken to any place at which work is being performed 15 1 2 All scaffolds and its components must meet the requirements of the regulations stipulated in the Factories Scaffolds Regulations See Fig 15 1 for the basic components of a scaffold 15 1 3 Ifa scaffold exceeds 4m it must be erected by an approved scaffold contractor 15 1 4 The design of a professional engineer is necessary for scaffolds with the following conditions e For construction sites and general factories construction of any metal scaffolds exceeding 30m in height and or with cantilever or jib support e For shipyards construction of metal scaffolds
5. crack welds or damaged feet Rungs steps treads or top plates which are missing worn or loose Tie rods missing broken or loose Ropes braces or brackets which are missing broken or worn and Timber members which are covered with opaque paint or other treatment that could disguise faults in the timber 18 4 4 Ladders can be checked for serviceability by Taking each end of the ladder in turn and trying to push the stiles apart and then together Any movement indicates insecure rungs or loose tie rods Laying the ladder flat raising one end and attempting to push one stile while pulling the other If the stiles move relative to each other the rungs are loose and Tapping timber rungs with a mallet A dull sound is an indication of a defective rung 45 46 19 Hazards of Working at Rooftop 19 1 Fragile Brittle Roofing 19 1 1 Persons standing on fragile and brittle roofs are at risk if the roofs break and give way under the loading of the persons weight These roofs typically include those that are constructed from moulded or fabricated materials such as cellulose cement roof sheets glass fiberglass acrylic or other similar synthetic materials 19 1 2 If a person is required to work on or from a roof that is fragile and can break easily it is important to ensure that Before the roofing work is carried out the brittle or fragile areas are identified and the stability of the structure and soundness of the roof
6. fall from height incident Risk management involves identifying hazards assessing risks implementing appropriate control measures and monitoring and reviewing those measures Hazard Identification Identifying hazards involves recognising any work process activity or situation with potential to cause injury or harm to a person such as when a person works at the edge of a building without proper barricades It is important to plan the process for hazard identification and risk assessment While the focus of this Code of Practice is on the hazards of falling when working at heights it is also important to address and extend to other workplace safety and health hazards such as manual handling noise hazardous substances falling objects and slips and trips All hazards to which a person including members of the public could be exposed to as a result of work must be identified The hazards must always be identified prior to work commencement and when changes to systems of work are planned or occur Examples of workplace conditions that could have potential falls from height hazards are given in the list Work Environments that Pose a Fall from Height Risk e Raised work surfaces such as slopes Slippery work surfaces wet oily dusty or glazed Uneven work surfaces for example broken ground or profiled roof sheeting e Cramped work surfaces e Work surfaces cluttered with tools work materials and debris e Workers workin
7. in boom lifts should wear a suitably anchored safety harness Anchoring to nearby poles or equipment outside the work platform is prohibited 15 3 6 Personnel required to climb out of an elevated boom lift onto an elevated facility structure shall utilise 100 percent tie off procedures refer to paragraph 17 2 during the transition from the boom lift cage to the elevated work location i e personnel must anchor to a fall rated facility anchorage point prior to disconnecting their lanyard attached to the aerial boom lift cage 15 3 7 The use of planks ladders or any other devices on the work platforms for the purpose of achieving additional height or reach is strictly prohibited 15 3 8 Always refer to the operator s or service manual for additional fall protection requirements for specific lift equipment 27 15 4 Suspended Gondola Figure 15 4 A gondola is mainly used for performing work on the sides of buildings 15 4 1 A suspended gondola Fig 15 4 is a power operated suspended working platform that is fixed to a building structure It is used for access during building maintenance or window cleaning 15 4 2 During the planning stage consideration should be given to the methods by which maintenance repairs or cleaning will be undertaken on buildings or structures 15 4 3 Consideration of future maintenance requirements in the early design stage will avoid the possibility of unsafe work practices occurri
8. of working at height involves looking at the likelihood of a fall occurring and the extent of any potential harm or injury i e the consequences and consequently determine a level of risk In this manner hazards that have higher risks need to be given priority Risk assessment should provide information on Where and how many employees are likely to be at risk of incurring injuries e The likelihood or the probability that this is likely to occur taking into consideration the existing control measures and e The potential severity of any injuries As severity refers to the intrinsic or inherent nature of the adverse effect s that may result from the hazard the existing control measures must not be taken into consideration when assessing severity 6 3 3 6 3 4 6 3 5 6 3 6 When the risks have been assessed reasonably practicable measures must be taken to reduce or maintain the risk level at an acceptable level It is important that no work must be allowed to commence if the risks are assessed to be high or unacceptable The results of the risk assessment must be approved and endorsed by the top management The control measures should as far as practicable be implemented within the shortest timeframe In determining the implementation of the control measures priority must be given to those in higher risk level An action plan should be prepared to implement the control measures The plan should include a time line of imple
9. plan shall be monitored and reviewed periodically to ensure its relevancy and effectiveness It is also required to be properly documented and kept readily available at the workplace Components of a Fall Protection Plan The fall protection plan should be customised to address the unique conditions at individual workplaces A comprehensive fall protection plan should include but not be limited to the following components a Policy for fall protection b e d e lt Responsibilities Hazard identification and risk assessment lt Control measures methods O Procedures f Personal fall protection equipment g Inspection and maintenance h Training i Incident investigations j Emergency preparedness 4 1 4 2 4 3 4 4 Policy for Fall Protection A policy for fall protection will set clear and unambiguous terms on the organisation s approach and commitment towards fall prevention Top management with executive or site responsibility shall define endorse and document its policy for fall protection The policy for fall protection shall be appropriate to the needs nature and scale of the organisation s activities and work at height risks The organisation shall establish a policy which demonstrates its commitments to prevent falls from height incidents comply with applicable legal and other requirements It is important that the policy for fall protection is understood implemented and maintained
10. relevant parties Arecord of all accidents and incidents and their investigation findings and outcomes should be properly documented 11 Emergency Response 11 1 Emergency Planning 11 1 1 A written emergency response plan must be established 11 1 2 Emergency response equipment must be kept on site and made readily available and accessible 11 1 3 As rescue operations are often carried out under extreme pressure consideration should be given to all aspects of the rescue process Elements to consider should include the type of Rescue method Equipment required Procedures to gain access into less accessible areas and The training required for rescuers 11 1 4 Emergency responders or rescuers should be appointed and adequately trained to carry out rescue operations Arrangement should be made such that a sufficient number of emergency responders are available at every work shift 11 1 5 Workers must be provided with information on the emergency plan including Who to approach or call in the event of an emergency The procedures to follow for emergencies including those for persons suspended in safety harnesses during fall arrest It is recommended that training in self rescue techniques be provided for workers using safety harnesses and Assembly point if relevant 11 1 6 The provision of first aid treatment and first aid facilities should be considered Persons assigned to first aid duties must be competently
11. Code of Practice for Working Safely at Height H o j J i A d WALE Y f ANININ g Bey T i U VE 2 Ge o ee a J e OM JO 391 2V14d JO BPO WSs AA coe J Od 7 E F eP wsHcounciL Year of Issue 2009 Contents Section A General Requirements Chapter 1 Introduction 1 1 Title 1 2 Scope 1 3 Purpose 1 4 Terms and Definitions Chapter 2 Design for Safety 2 1 Risk Elimination and Reduction at Source Chapter 3 Fall Protection Plan 3 1 Implementing a Fall Protection Plan 3 2 Components of a Fall Protection Plan Chapter 4 Policy for Fall Protection Chapter 5 Responsibilities Chapter 6 Risk Management 6 1 Hazard Identification and Risk Assessment 6 2 Hazard Identification 6 3 Risk Assessment Chapter 7 Risk Control Measures 7 1 Hierarchy of Control 7 2 Elimination 7 3 Substitution 7 4 Engineering Control 7 5 Administrative Controls 7 6 Safe Work Procedures 7 7 Use of Personal Protective Equipment 7 8 Ensuring Control Measures are Safe and Do Not Introduce New Risks 7 9 Maintaining and Re evaluation of Controls Chapter 8 Inspection and Maintenance Chapter 9 Instruction and Training 9 1 Information Instruction and Training Chapter 10 Accident Incident Investigation Chapter 11 Emergency Response 11 1 Emergency Planning 11 2 Rescue Operations Fall Arrest Systems Chapter 12 Supervision gt A O NNN 10 10 11 11
12. For The Prevention Of Falls From Heights In Construction Work 2004 2 Government Of Western Australia Commission For Occupational Safety And Health Code of Practice Prevention Of Falls At Work Places 2004 3 Worksafe Victoria Code of Practice No 29 Prevention Of Falls In Housing Construction 2004 4 Worksafe BC OHS Regulations Guidelines Part 11 Fall Protection 5 Royal Gazette Of The Province Of Nova Scotia Canada Fall Protection And Scaffolding Regulations Made Under Section 82 Of The OHS Act S N S 1996 C 7 O 1 C 96 14 January 3 1996 N S Reg 2 96 6 OSHA Regulations Standards 29 Cfr Sample Fall Protection Plan Non Mandatory Guidelines For Complying With 1926 502 K 1926 Subpart M App E 7 HSE Safe Use Of Ladders And Step Ladders An Employer s Guide 8 HSE The Work At Height Regulations 2005 A Brief Guide 22 Other Useful Contacts To report unsafe practices at the workplace please call the MOM hotline at 6317 1111 To report accidents dangerous occurences and occupational diseases visit www mom gov sg ireport 49 50 This page was meant to be blank Published in October 2009 by the Workplace Safety and Health Council in collaboration with the Ministry of Manpower All rights reserved This publication may not be reproduced or transmitted in any form or by any means in whole or in part without prior written permission The information provided in this publication is accurate as at ti
13. accidents and ill health impossible This is a permanent solution and shall be attempted in the first instance If the hazard is removed all the other controls such as the use of fall protection system workplace monitoring and surveillance would no longer be required In effect the item is removed from the table of hazards 7 2 3 7 3 7 3 1 7 4 7 4 1 7 4 2 7 5 7 5 1 7 5 2 7 5 3 7 5 4 Examples of elimination include e Prefabricating wall frames horizontally before standing them up Using precast tilt up concrete construction instead of concrete walls constructed in situ and e Using paint rollers with extendable handles rather than working on a ladder Substitution This involves replacing the hazard by one that presents a lower risk For example by using mobile elevated work platform MEWP instead of ladders for reaching high places The risk level is lowered as MEWP generally provides a higher level of fall protection than ladders Engineering Control Engineering controls are physical means that limit the hazard These include structural changes to the work environment or work processes or erecting barriers to prevent the worker from being exposed to the hazard An example of an engineering control includes edge protection such as using guard rails at open sides to prevent persons from falling over Administrative Controls Administrative controls are systems of work or work procedures that help to reduc
14. al fall arrest system means a system used to arrest the user in a fall Such a system typically consists of a body harness and includes a lanyard lifeline anchorage or any suitable combinations of these Lanyard means a flexible line of rope wire rope or strap which generally is used for connecting the safety belt or safety harness to a lifeline or anchorage Lifeline means an anchored flexible line that is used in conjunction with fall arrest systems to provide protection from falls Risk means the probability and consequence of injury or illness Where possible risk should be mitigated at source design for safety during the design and subsequently in the construction stages Toe board means a low protective barrier that prevents the fall of personnel materials and equipment to lower levels Travel restraint or work restraint system means methods of preventing a person from reaching beyond the safe work zone within which he will not be in danger of falling For example safety belt with lanyard of limited length attached to a suitable lifeline or anchorage 2 Design for Safety 2 1 Risk Elimination and Reduction at Source 2 1 1 The purpose of designing for safety is to eliminate or reduce risk at source by taking into consideration foreseeable risks at the planning and design stage so that these risks can be removed or mitigated by designing around the risk 2 1 2 In identifying the forese
15. at all levels of the organisation The policy for fall protection should be reviewed periodically and amended as and when necessary 5 1 5 2 5 3 Responsibilities Top management needs to ensure that sufficient resources essential to the establishment implementation and maintenance of the fall protection plan are made available so as to achieve its objectives Competent person s shall be appointed to develop implement maintain and evaluate the fall protection plan The fall protection plan must be developed specific to the conditions of the premises i e on a site by site basis The appointed competent person s shall define document and communicate the roles responsibilities and accountabilities of all levels of staff that may be affected by the fall protection plan It shall include the following To evaluate the need to work at height e To ensure all reasonably practicable measures and methods are taken to eliminate potential falling from height hazards e Toensureall workers inclusive of subcontractor workers are properly trained in the use maintenance and care of personal fall protection equipment and the recognition of hazards related to their use e To ensure all devices equipment materials used for fall protection by workers inclusive of subcontractor workers are maintained at design specifications and are inspected certified as per manufacturer and or local regulatory approved standards e Toimplement emer
16. ator using an industrial rope access system the backup device is to be 30 maintained at a higher elevation in relation to the operator 16 1 2 Industrial rope access systems are a specialised and job specific form of abseiling The system is designed to access areas for work such as window cleaning sign maintenance on high rise buildings and other forms of maintenance where it is not reasonably practicable to use other forms of access Such systems are usually suited for light or medium work but may be adapted for heavier work such as derrick erection in shipyards through the use of lightweight gondolas for firmer footing 16 1 3 Industrial rope access systems require a high level of competency on the part of the user to ensure safe use An industrial rope access system can be extremely dangerous if used by an inexperienced or untrained user 16 1 4 The critical items specific to safe usage of industrial rope access systems include the following Training Due to the high level of skill and competency required for the safe usage of industrial rope access systems operators must be provided with a structured and documented syllabus Minimally workers must be capable of conducting self rescue A rope access supervisor must be a trained and competent rope access operator who has sufficient experience in performing work using rope access and had undergone advanced training and assessment This is to ensure that the rope access supervisor has the exp
17. available means of communication Precautions on Suspension Trauma Suspension trauma may occur when a person hasan arrested fall and is suspended in an upright position When the legs are dangling in mid air without support for a period of time blood is not naturally moved out of the legs and back into the heart This could result in fainting or loss of consciousness within minutes and may eventually lead to death Depending on a person s susceptibility the condition may be worsened by heat and dehydration Therefore the quick rescue of a person suspended in a full body harness as soon as possible is vital The rescued victim of fall arrest must not be positioned in or allowed to take up a horizontal position immediately after reaching a safe resting place The person must be placed with the legs horizontal and the torso vertical or steeply inclined Sufficient time must be allowed for the person to recover from suspension trauma and acquire normal blood circulation and pressure before allowing the victim to lie down 12 Supervision 12 1 12 2 12 3 12 4 A competent person should be appointed to provide proper and adequate supervision for workers to ensure that they are not exposed to hazards and all reasonable precautions have been taken where there is a risk of falling Supervision is especially important if the workers are undergoing training or are new or inexperienced and unfamiliar with the working environment It is es
18. cedures Safe Work Procedures SWPs are the most common form of administrative controls in workplaces It is a set of systematic instructions on how work can be carried out safely Using information obtained from risk assessment a set of SWPs should be developed for various work activites that have a risk of falls from height The SWP generally provides instructions on how jobs are to be performed persons involved in these jobs what safety precautions must be taken and what kind of training and or certification is necessary to be able to competently carry out these jobs The SWP must be communicated to everyone involved in the job so that each person is aware of his roles and responsibilities The SWP must also be communicated to those who will be affected by the job It is necessary to provide adequate level of supervision to ensure that the safe work procedures are being followed Regular review of the effectiveness of the procedures must be undertaken Make sure that the work is well organised so that workers do not increase the risk of a fall for themselves or others For example sequence jobs so that different trades are not working above or below each other at the same time Use of Personal Protective Equipment Personal protective equipment PPE should be used only as a last resort after all other control measures have been considered or as a short term contingency during maintenance repair or as an additional protective measure
19. d storage of equipment e The correct anchorage installation and use of the system and e Emergency rescue procedures 17 3 2 Upon completion of the training programme workers should be assessed for their competency in the safe use of the equipment 17 3 3 The individual fall arrest system is designed to arrest only one fall In the event of a fall even if the shock absorber has not been extended all the components of the fall arrest system should be inspected and approved by a competent person or the manufacturer before it is put to use again Otherwise they are to be removed from service 17 4 Hazards of Fall Arrest Systems 17 4 1 There are some hazards when using the individual fall arrest systems One such hazard is swing back and swing down It is caused by the pendulum effect of a person falling off the edge 17 4 2 Swing back In a fall particularly from a perpendicular edge the worker will swing back into the building structure and collide with any obstructions in the path of the swing Fig 17 2 left diagram If there is a risk of a swing back occurring the use of an individual fall arrest system should be reassessed 17 4 3 Swing down Ina swing down the arrest line extends diagonally from the anchor point following the perimeter edge of the roof If the worker falls the fall arrest line will slide back along the perimeter until it is at a right angle with the edge of the roof If the arrest line is
20. d the necessary level of competency Recognition of skills attained where applicable e g accreditation or certification Delivery of training by a competent person and Evaluation of effectiveness of training Training on Individual Fall Arrest Systems An individual fall arrest system requires moderate level of competency on the part of the user to ensure that it is used properly Employees who use these systems should be trained in the correct fitting anchorage use and maintenance of the individual fall arrest systems It is also important for the users to understand fall hazards and the risks of injury associated with the tasks that they are undertaking The training should also include how to respond in an emergency 15 16 10 Accident Incident Investigation 10 1 10 2 10 3 All accidents or incidents relating to falls from height should be investigated and analysed for the following objectives e Determine any underlying deficiencies in the existing fall protection system and plan which might have contributed to the occurrence of the incident e Identify the need for corrective action to be taken to address any such deficiencies as identified and e Identify the opportunities for preventive actions to be taken to prevent any such incident from recurring The results from any such incident investigated inclusive of lesson learnt and the corrective preventive actions to be taken should be promptly communicated to all
21. e Calculation of the Free Fall Distance Free Fall Distance The allowable free fall distance for individual fall arrest systems should be limited to not more than 6 feet 1 8m Fall Clearance Distance This is also known as free space it is the total distance below a worker who is using an individual fall arrest system to safely arrest his fall without striking an obstruction or the ground Below are the formulae for two commonly used configurations For a harness lanyard with energy absorber assembly Fig 17 1 Clearance Height Length of Lanyard Length of Energy Absorber Extension Height of Worker Safety Distance usually taken as 3ft 1m For a Self Retracting Lifeline SRL Retractable Fall Arresters Clearance Height Deceleration Distance Height of Worker Safety Distance usually taken as 3ft 1m If the individual fall arrest system fall arrest lanyard or SRL is attached to a horizontal life line HLL the deflection of the HLL needs to be included 35 36 Height of worker Safety distance Figure 16 2 A graphical representation of the formula for calculating clearance height 17 3 Instruction and Training for Workers Using Individual Fall Arrest Systems 17 3 1 Workers required to use individual fall arrest systems should be trained and instructed in The correct fitting and attachment of safety harnesses The dangers of using incompatible hardware e The inspection maintenance an
22. e impact of a person falling against it Figure 14 1 Perimeter guard railing Figure 14 2 Unprotected stairways pose a falling hazard Figure 14 3 Stairways fitted with handrails 22 14 1 3 Edge protection must also be provided at any other edge at the workplace where a person could fall Such protection must adhere to the set requirements listed below Temporary or advance guards must be provided to reduce the risk of a scaffold erector falling from the uppermost unsecured or exposed scaffolding level during the process of erecting or dismantling scaffold The guard rail system must be of sound construction and be able to withstand the weight of a person applied at any point Toprails must be at least 1m above the working surface Midrails and toe boards must be provided However wire mesh infill panels incorporating a toe board may be used instead of the midrails A bottom rail above the toe board on some roof slopes may be provided for more severe roof slopes Both a midrail and infill mesh panel will assist in preventing persons and objects from sliding off the roof Ifaccess points are required for equipment for example a hoist they should be protected adequately with gates safety chains or any other means to prevent a person falling
23. e the exposure of workers to the risks of falling It is also a useful means to limit the frequency and duration of exposure of workers to hazards and the number of persons involved in the task Administrative controls may also be used to support or be used in conjunction with other control measures that are put in place For example safe work procedures may be needed to guide workers on the safe use of temporary work platforms which in itself is a form of engineering control measure The development of administrative controls should also involve people who perform task regularly such as contractors and workers as they often have a good understanding of the risks involved For effective use of administrative controls it is necessary to ensure that information is adequately and effectively communicated to the workers For example daily toolbox meetings may be used for such purposes Prohibition of Access Marking out an area can be effective in making sure that people are not exposed to fall hazards There should be adequate signages to warn against access to the hazardous area If possible a physical barrier should be erected to prevent unauthorised access e Employers should provide relevant information to employees on site and adequate supervision to ensure that no worker enters a No Entry area 11 12 7 6 7 6 1 7 6 2 7 6 3 7 6 4 7 6 5 7 7 7 7 1 7 7 2 7 7 3 7 8 7 8 1 7 9 7 9 1 Safe Work Pro
24. e where they could fall ii Work positioning A personal fall prevention system which includes a harness connected to a reliable anchor point to support the user in tension or suspension in such a way that a fall is prevented or restricted All work positioning systems must be provided with a back up system in case the primary support fails b Collective Passive Guard rails and other physical barriers with warning signs at the edges of the safe work zone 2 Fall arrest systems Individual Active A fall protection system that uses a harness connected to a reliable anchor to arrest and restricts the fall and prevents the user from hitting the ground It usually has an energy absorbing device to limit the impact of gravity forces on the body 16 1 Industrial Rope Access Systems 16 1 1 Industrial rope access systems Fig 16 1 are used for gaining access to work areas that are hard to reach by other means usually through the use of vertically suspended ropes Rope access systems require a high level of competency from the users and therefore other means such as mobile elevated work platforms and suspended gondolas which require less skill to operate should be used if it is reasonably practicable to do so Working line Safety line Rope grab back up Working line lt Chest harness Tool attachment strap Work positioning harness Lanyard assembly Swing seat optional Figure 16 1 Oper
25. eable risks the work activities of persons involved in the following areas should be taken into consideration e Construction and or installation e Usage e Maintenance and or cleaning Demolition and or decommission 2 1 3 Itis also important to consider risks that are posed to persons not directly involved but affected by the work such as visitors customers or members of the public Design for Safety To facilitate the design for safety for buildings and structures a Design Review Process is recommended It is a systematic process where the risks of the design are highlighted reviewed and recorded In a Design Review Process a safety and health review committee is established and should consist of the main stakeholders such as client design engineer architect project safety and health coordinator and contractor The outcome of the review process should be a safe design endorsed by all parties and a record of the resultant hazards or vital safety and health information A GUIDE process is recommended to assist in the review process G Group together a review team consisting of major stakeholders U Understand the full design concept by looking at the drawings and calculations or have the designers elaborate on the design Identify the risks that arise as a result of the design or construction method The risks should be recorded and analysed to see if they can be eliminated by changing the design D Design around the risk
26. elopments in fall controls are constantly being introduced and it is not the intent of this code to limit or prohibit the use of new methods or devices in fall prevention Terms and Definitions Administrative controls means policies and procedures for safe work practices Anchorage means a secure point of attachment for lifelines or lanyards Competent person in relation to any work to be carried out means a person who has sufficient experience and training to perform the work Fall arrest system means equipment and or material that is designed for the purpose of preventing or reducing the severity of injury to a person in the event of a fall such as safety harness systems Safety belts are generally used in a travel restraint system and not as a fall arrest system Fall protection plan means a site specific plan prepared by a competent person for the purpose of reducing or eliminating the risk of falls by ensuring that all reasonable fall protection measures and methods have been implemented prior to the commencement of work 1 4 6 1 4 7 1 4 8 1 4 9 1 4 10 1 4 11 1 4 12 1 4 13 Fall protection system means material and or equipment that is designed for the purpose of preventing a person falling from height such as scaffolds and mobile elevated work platforms Hazard refers to any source or situation with potential to cause injury or harm to the health of a person Individu
27. entory of equipment that require regular maintenance e Frequency of inspection and maintenance e Procedures of inspection and maintenance Preventive maintenance such as servicing e Repair for damaged items e Replacement for irreparable items and e Record keeping such as for damages flaws detected any preventive maintenance repairs or replacements done Maintenance of equipment should only be performed by trained and competent persons 13 14 9 Instruction and Training 9 1 9 1 1 9 1 2 9 1 3 9 1 4 9 1 5 Information Instruction and Training Persons working at height who are exposed to the risk of falling should be provided with sufficient and adequate information instruction and training so that they have the skill and knowledge to perform the work safely It should help them understand e The nature of fall hazards to which they are exposed e The risk of injury associated with the task The control measures that are needed including safe work procedures and the use of personal protective equipment e The proper usage and maintenance of equipment such as performing inspection to ensure equipment are in good condition before use Procedures to follow in the event of an emergency such as rescue accident or injury The amount of information and type of training depend on several factors such as the risks involved the level of operator skill required and the complexity of the tasks and wor
28. erience and skills needed to supervise rope access operators and their abilities to work safely Team size The team should have a minimum of 2 operators one of whom must be a trained and competent rope access supervisor due to the potential hazards of using industrial rope access systems no operator must be allowed to work alone In addition the supervisor s role is also to oversee and guide the team The supervisor must also be well versed and trained in rescue techniques able to direct rescue if the necessity arises Adequate rest periods The amount of fatigue and productivity of workers is affected by factors such as weather conditions and the difficulty of the position at which work is carried out A significant factor is the altitude work at high altitude exposes workers to higher wind speeds and low temperature Other factors to consider include weather conditions and the type of work carried out Selection of workers Workers engaged in such tasks must have the correct attitude and aptitude for work at height as they will need to be relied upon to behave in a sensible responsible manner during work Operators should be physically fit and free from any disabilities that may prevent them from working safely Selection of equipment The equipment used can be determined through the risk assessment process which must be carried out before each job The equipment must be compatible i e the safe function of any equipment or componen
29. exceeding 15m in height 15 1 5 In addition all hanging scaffolds from which a person may fall more than 2m must also be constructed and installed in accordance with the design and drawings of a professional engineer gt b Uprights Not more than 600 mm Not more than 600 mm Not less than 90 mm Uppermost guard rail Intermediate 7 guard rail Supporting surface Base plate Sole plate Toe board J STANDARD E Work platform Figure 15 1 Scaffold with components labelled 15 2 Tower Scaffolds 15 2 1 Tower scaffolds are a particular form of scaffolding that usually consist of fabricated frame units constructed as single bay towers Most available tower systems are aluminium but steel systems are also available A tower scaffold that is fitted with castor wheels equipped with effective locking devices is deemed to be a mobile tower scaffold Fig 15 2 LOCKING CASTERS Access opening Insert shaft in working platform guard to Toprail rails or cover ee Hole for opening not ee Midrail fastening pin shown Toe board Wire Plan brace lashing under deck Locking assembly Runner ledger Bearer transom Ladder fixed to narrower NN side of tower 0 N Plan brace a f Post vis standard S N Transverse ledger bracing W Figure 15 2 A mobile scaffold w
30. ferred or hoisted to the work station Do not work on the ladder continuously for extended periods of time recommended work time 10 15 mins Do not use a ladder for heavy or strenuous work Do not overreach when working on the ladder Do not do work that will impose a side loading on a ladder unless the ladder is secured Do not work directly over other workers work areas Do not allow anyone else to be on the ladder at the same time Do not use ladders during strong wind or wet conditions and Do not use the ladder unless slip resistant footwear is being worn Ensure that the ladder is on firm ground or spread the load e g place a board at the bottom of the ladder For A frame ladders ensure that both spreaders are straightened and firmly attached before use They must be locked firmly in the open position Tie the ladder to a suitable point making sure that both stiles are tied Fig 18 5 If this is not possible then securely wedge Figure 18 5 A ladder with both stiles secure the ladder e g against a wall If none of the above can be achieved foot the ladder Fig 18 6 footing is the last resort and should be avoided if other means of access can be used i Figure 18 6 Footing the ladder 18 4 3 Do not use ladders with any of the following faults Timber stiles that are warped splintered cracked or bruised Metal stiles which are corroded twisted bent kinked crushed or with
31. fness Heat glazing burns damage by heat Dirt oil grease Age Flattening thinning and Lumps 17 7 3 When doing pre use checks for harnesses the competent person should pay attention to the following Inside and outside any textile attachment point loops for all the features listed under the checking procedure for textile based equipment above Fastening and adjustment buckles as well as any other safety critical metal and plastic parts for Correct assembly Correct functioning Excessive wear 39 Corrosion Cracks Other damage 17 7 4 When doing pre use checks for connectors Fig 17 4 such as snaphooks the competent person performing the inspection should take note of e Obvious damage or deformations bent twisted corroded worn cracks etc especially at contact points e Rust corrosion Contamination by chemicals pitting or flaking e Build up of foreign matter grit grease or paint e Cuts serrations burring heavy marking or scoring e Hinge pin ensure it is in good condition e Catch pin ensure it is not bent and e Functionality of moving parts such as locking mechanisms Carabiner nose Hook nose Lock Gate G ate Lock a Spring Hinge inside Spring Eye gate inside gate Hinge F a Figure 17 4 A diagram of a self locking connector or snaphook left and a carabiner right 17 7 5 When doing pre use checks for shock abso
32. g in adverse weather conditions for example in rain strong or gusty winds extreme heat or high humidity or very cold conditions e Unprotected edges e Building materials large tools or equipment that need to be manually carried e Overloading of working platform which may lead to collapse Struck by moving object or equipment e g load from lifting operation 6 2 4 6 2 5 6 3 6 3 1 6 3 2 There are various ways to identify potential hazards or situations that may result in a fall Typically consideration should be given to the following areas Previous injuries near miss incidents or accidents involving the fall of persons that had occurred at the workplace or other similar workplaces e Relevant codes of practice and guidance notes e Consultation with stakeholders to find out what risks they may be exposed to when working at height These stakeholders should include safety and health personnel supervisors engineers and technical personnel and workers Walk through inspections of the workplace and Any other records or statistics which indicate potentially unsafe work practices A hazard identification process or procedure may range from a simple checklist for specific equipment such as a ladder or fall arrest system to a more open ended appraisal of a group of related work processes Generally a combination of methods will provide the most effective results Risk Assessment Assessing risks
33. gency response procedures and to investigate all falls from height incidents and To ensure compliance with all applicable regulatory requirements and reporting of performance to top management for review 6 1 6 1 1 6 1 2 6 1 3 6 1 4 6 1 5 6 2 6 2 1 6 2 2 6 2 3 Risk Management Hazard Identification and Risk Assessment Hazard identification and risk assessment is a fundamental tool to identify hazards associated with the workplace activities assess its risk levels and determine the suitable control measures to be taken Employers principals including contractor and sub contractor and self employed persons are required to discharge their duties in identifying the hazards and conducting risk assessment in relation to the safety and health risks posed in the workplace and to take all reasonably practicable measures to ensure that any person who may be affected by his undertaking is safe in the workplace Risk assessment should be conducted by a multi disciplinary team who have a thorough knowledge of the work to be undertaken The team members should include management staff process or facility engineers technical personnel supervisors safety personnel and workers whenever appropriate Hazard identification and risk assessment should be reviewed periodically to ensure its effectiveness and validity particularly when there is any significant change to the workplace activities or when there is an occurrence of any
34. here access to the corner of the roof is required workers should be attached to two or more sets of ropes and anchorages to prevent a fall from either edge of the roof While accessing the anchorage points the users should be restrained so that a fall cannot occur 16 2 7 The anchorage points must be able to withstand the full weight of the person using it without failure Anchorage points should be designed for additional loading should more than one person be using the system 16 2 8 Ifthe system consists of ropes that require their effective length to be adjusted to prevent a fall occurring the method of adjusting the rope length should be by means of a lockable cam device or similar if there is a possibility of the rope grab or similar coming off the end of the rope the rope should be suitably terminated 16 2 9 Safety belts are used only for travel restraint and not for fall arrest purposes Safety harnesses should be used if the intention is to provided fall arrest instead of travel restraint 16 2 10 Travel restraint systems are generally only suitable for work such as the following e Roof inspection not on fragile roofs e Installation and removal of perimeter guard rail systems e Minor repair work including replacement of some isolated parts of the roof e Painting and cleaning e Installations of skylights and ventilation fixtures e Pointing up tiles or fitting ridge capping metal roofs and e Installation and removal of telev
35. is assessed as part of the risk management process The worker is informed that it is a fragile or brittle roofing Safe access to the work area is provided to enable workers to step directly onto a safe platform or area Work is carried out from a working platform that is located and constructed to allow work to be performed safely Fig 19 1 An adequate fall arrest system is installed and used There is another person present at all times when work is being performed on a brittle roof in case there is an emergency Training and instruction has been provided to workers on precautions to be taken Training in rescue techniques has been provided and rescue equipment is readily available for use at the workplace Warning signs are displayed at access points to any work area where fragile material is present Fig 19 2 Warning signs are fixed securely in a position where they will be clearly visible to persons accessing the working area Figure 19 1 Left Crawl boards gangways and perimeter guard rails can enhance safety for work on fragile or brittle roofs Figure 19 2 Left Danger signs to be fixed at points of access to the roof 20 Acknowledgements The Workplace Safety and Health Council would like to thank all who had commented and contributed in any way to the improvement of this Code of Practice 47 48 21 List of References 1 Australian Government NOHSC National Code of Practice
36. ished 13 4 Guarding of Openings 13 4 1 Openings on floors or platforms present significant hazards A person may fall through an opening which may result in serious injury or death If the opening that is stepped upon is small cuts and bruises may result on the legs or feet Fig 13 1 left 13 4 2 A person may fall through or step into openings such as lift openings and stairwells A barrier should be erected around the opening to prevent persons from falling In addition the opening should be guarded with embedded wire mesh and covered with material of adequate strength to prevent entry by objects or persons The cover should be secured to prevent it from dislodging 13 4 3 When a opening is protected by a cover a suitable signage such as that shown in Fig 13 1 right diagram should be placed nearby or onto the cover itself to warn people of the hazard n Figure 13 1 Left unprotected openings are severe hazards and must be covered Right a warning sign it can be placed nearby the opening or affixed to the opening cover itself 21 14 Edge Protection 14 14 1 1 Edge protection often referred to as a guard rail is used to reduce the risk of a person falling from open sides Fig 14 1 14 1 2 Edge protection must be provided to the edge of a scaffold walkway ramp Fig 14 2 and Fig 14 3 and landing or wherever a person is at risk of falling from open sides The protection must also be able to withstand th
37. ision aerials and other similar communication equipment 33 34 17 Fall Arrest Systems 17 1 Individual Fall Arrest Systems Personal Protective Equipment 17 1 1 Individual fall arrest systems are intended to safely stop a worker from falling an uncontrolled distance and to reduce the impact of the fall Individual fall arrest systems are an assembly of interconnected components consisting of a harness connected to an anchorage point or anchorage system either directly or by means of a lanyard They can be used where workers are required to carry out their work near an unprotected edge such as rigging and dismantling They may also be used where the working platform is not stable for example in suspended scaffolds 17 1 2 When used to arrest falls the following guidelines are to be observed The system should be rigged such that if a fall occurs the distance fallen will be the shortest This is to minimise the impact and swing of the arrest All fall protection equipment should be visually checked prior to usage refer to paragraph 17 7 e Once a fall arrest system has been used to arrest a fall it must be removed from service and not used again e Anchoring of lanyards to guard rails of scaffolding should be avoided where possible unless the guard rail is designed to be able to withstand the force generated by a falling person about 22 2kN per person attached If it is absolutely necessary to anchor to the guard rails the par
38. ith access ladder opening and other features to provide a hazard free working platform 15 2 2 A tower scaffold should be erected by a competent person 15 2 3 Edge protection such as guard rails must be provided at the highest landing 15 2 4 When a tower scaffold is mounted on castors for use as a mobile scaffold the following rules should be strictly observed e Tower scaffolds should be moved with caution e Prior to moving the route must be checked for power lines overhead obstructions and for holes and uneven surfaces on the ground e When it is necessary to deploy tower scaffolds on an inclined surface measures must be taken to ensure Stability such as the use of outriggers Otherwise tower scaffolds should not be deployed on an inclined surface e Never access the scaffold until all its castors are locked to prevent movement e Never shift or move the scaffold while anyone is on it e Do not cover the scaffold with containment sheeting such as shade cloth unless it has been specifically designed for the purpose and it is only used in an enclosed wind protected environment e Tower scaffolds must be inspected by a competent person before its first use After substantial alteration After any event likely to have affected its stability or Once it has been in place for 7 days At intervals not exceeding 7 days tower scaffolds must be inspected and a written report made 15 3 Mobile Elevated Work Platforms Hoist
39. k procedures Some common forms of training include General induction course for new workers e In house training programmes and Formal training courses offered by accredited training providers Information can be disseminated during e Toolbox briefing On the job training Information should be provided in a form that can be understood by all workers This may include providing information in languages other than English If classroom teaching is conducted it should be complemented by hands on training to provide practical experience Induction programmes are essential and should be provided for workers taking up new jobs or where work situations have changed Records of training should be kept to enable on going programme evaluation and review Key Elements of an Effective Training Programme In developing and implementing an effective programme employers should consider the following Ananalysis of training needs including the identification of the tasks to be performed and any associated hazards and risks Identification of any pre requisites or entry standards Definition of learning objectives and clear identification of the extent level of competencies to be achieved Selection of appropriate training methods and aids depending on the topic environment and targeted trainees Adequate assessment to ascertain that the trainees understand and have acquired the knowledge and skills and demonstrate
40. lude the following The rope or webbing including the anchorage lines e g inspecting for any defects or damage and checking the anchorage The fall arrest system harness body e g inspecting for any damage to the mounting ring or the body checking the activation of the fall arrest indicator and that the labels are present The locking mechanisms and rope guides e g inspecting the visible rope guides for excessive wear and checking that the rope runs freely through the anchorage and that the locking mechanism works properly and The hardware e g checking that the snaphooks or links work properly That the PPE or its components have not exceeded the manufacturer s recommended usage life Marking or Labelling of Textile Components on PPE Solvents present in markers may damage or weaken textiles and may result in the protection provided by the PPE to be compromised As a general rule textile products must not be marked unless it has been ascertained that the marking agent will not cause damage to the textile 17 7 2 When doing pre use checks for lanyards and flexible anchorage lines textile based equipment the competent person performing the inspection should pay particular attention to the following Cuts and frays Excessive wear Abrasion furriness particularly to load bearing parts Stitching unauthorised repair Discoloration sign of chemical or UV damage Powdery surface damage by chemicals Hardening stif
41. me of printing The Workplace Safety and Health Council does not accept any liability or responsibility to any party for losses or damage arising from following this publication This publication is available on the Workplace Safety and Health Council website www wshc gov sg Email contact wshc gov sg
42. mentation and responsibility of persons implementing the safety and health control measures The plan should be monitored regularly until all the measures are implemented Organisations may opt to undertake a generic assessment to be used for similar work activities in different workplaces If such a model is used it is necessary to ensure that the risk assessment must be validated to be relevant and applicable for the particular workplace and the work processes 10 7 Risk Control Measures 7 1 7 1 1 7 1 2 7 2 7 2 1 7 2 2 Hierarchy of Control If workplace safety and health risks exist the employer self employed person or principal shall as far as reasonably practicable put measures in place to control those risks The appropriate control measures methods selected to reduce or maintain the risk of falling from heights shall be carefully assessed and implemented to ensure its effectiveness The approaches below are listed according to a hierarchy of control as shown in Fig 7 1 The approach to control measures should be attempted from the top of the hierarchy onwards These controls are usually not mutually exclusive e g engineering controls can be implemented concurrently with administrative controls SUBSTITUTION PERSONAL PROTECTION Figure 7 1 Hierarchy of Control Elimination Elimination of hazards refers to the total removal of the hazards and hence effectively making all the identified possible
43. ng during routine maintenance Sloping building exteriors and recline windows require priority consideration to ensure that maintenance can be carried out in a safe manner 28 15 5 Mast Climbing Work Platforms Figure 15 5 A mast climbing work platform is used to raise personnel and materials to the working position 15 5 1 Mast climbing work platforms Fig 15 5 are hoists that have a working platform used for temporary purposes to raise personnel and materials to the working position 15 5 2 Mast climbing platforms are generally not suitable for use where the profile of a structure changes at different elevations for example where upper floors of a building step back or balconies protrude from the building 15 5 3 The erection and rigging of mast climbing work platforms should be carried out or directly supervised by a competent person 15 5 4 Items transported inside the mast climbing work platform must not protrude out from the machine they may fall out if caught on external objects 15 5 5 Operators working in mast climbing work platforms should wear an anchored safety harness 29 16 Individual Fall Prevention Systems Fall Prevention and Fall Protection Systems 1 Fall prevention systems a Individual Active i Work restraint A fall prevention system which relies on waist belt or body harness and fixed length lanyard connected to a suitable anchor so as to restrain the person from getting to the plac
44. protective back guards In addition pole straps may be necessary while working from ladders 18 1 5 Ifthe ladder ismorethan 3m in length it should be securely fixed e g ladder lashing If itis impracticable to do so a person should be stationed at the base of the ladder to prevent the ladder from slipping or falling 18 2 Portable Ladders 18 2 1 Ladders should be used as a means of access to or egress from a work area and not as a work platform 18 2 2 Step and trestle ladders should only be used when they are in the fully open position A step ladder may be used in the closed position by leaning it against a support However care should be taken to ensure that only the front stiles carry the load Only trestle ladders are to be used to support work platform upon which a person has to work 18 2 3 Standing on top of a step ladder Fig 18 3 left diagram is highly unsafe and should never be done If it is necessary to work from a step ladder work a few steps below the top rung so that a handhold can be maintained Do not overreach and keep both feet on the same step throughout the task Figure 18 3 If it is necessary to work on a step ladder work a few steps below the top rung so that a handhold can be maintained 18 3 Step Platforms 18 3 1 A step platform Fig 18 4 is a safer alternative to a step ladder especially when the task involves extended periods working at height or with restricted mo
45. rbers the competent person should take note of any e Signs of activation and e Wear and tear of point of attachment 18 Ladders and Step Platforms 18 1 Ladders and Step Platforms 18 1 1 Ladders leaning against a supporting structure should be set up on a level area on firm footing and the base should be located a distance from the wall approximately a quarter of the vertical height of the ladder Fig 18 1 X Figure 18 1 The ratio of the height to the base for a correctly positioned ladder is 4 1 lt 1 Out gt Sf 18 1 2 Where a ladder is used as a means of access or as a working place adequate handholds should be provided to a height of at least one meter above the place of landing of the highest rung to be reached by the feet of any person working on the ladder 18 1 3 Persons on ladders should maintain three points of contact at all times e g two feet and one hand or two hands and one foot Fig 18 2 41 42 L it ee ay l E 3 points of contacts at all times a B KT bi 7 ic Figure 18 2 Three points of contact with the ladder should be maintained at all times Tools and materials should not be carried by hand and should be in a tool belt or side pouch 18 1 4 Fall prevention measures may be necessary in association with the use of ladders if a risk assessment shows that additional protection is necessary For example permanent ladders are fitted with
46. rtical line of a fall arrest system The line is connected to a fixed anchorage point at each end to which a lanyard can be attached The line can be made of metal tube metal rod steel wire rope synthetic webbing or synthetic rope 17 6 4 A personal energy absorber is used in conjunction with a fall arrest harness and lanyard to reduce the deceleration force imposed by a suddenly arrested fall and correspondingly reduces loading on the anchorage The energy absorber may be a separate item or manufactured into the lanyard 17 6 5 Further information for standards of fall arrest systems can be obtained from the following standards issued by SPRING Singapore Singapore Standard SS 528 1 2006 Personal Fall Arrest Systems Full body harnesses Singapore Standard SS 528 2 2006 Personal Fall Arrest Systems Lanyards and energy absorbers Singapore Standard SS 528 3 2006 Personal Fall Arrest Systems Self retracting lifelines Singapore Standard SS 528 4 2006 Personal Fall Arrest Systems Vertical rails and vertical lifelines incorporating a sliding type fall arrester e Singapore Standard SS 528 5 2006 Personal Fall Arrest Systems Connectors with self closing and self locking gates Singapore Standard SS 528 6 2006 Personal Fall Arrest Systems System performance tests 17 7 Inspection of Fall Arrest Systems 17 7 1 The inspection of fall arrest systems by a competent person should be conducted periodically and inc
47. s 15 3 1 A mobile elevated work platform is any telescoping scissor or articulating equipment used to position personnel materials or equipment at height Figure 15 3 Examples of mobile elevated work platform scissor lift left boom arm platform right 15 3 2 Mobile elevated work platforms consist of a platform surrounded by an edge protection system The protected platform is used to position persons at work areas Mobile elevated work platforms are available in a wide variety of types and sizes They include scissor lifts and boom lifts Fig 15 3 15 3 3 There are battery powered and internal combustion engine types Some are designed for hard flat surfaces only while others are designed for operation on rough terrain 26 15 3 4 Mobile elevated work platforms Should only be used on a solid level surface The surface area should be checked to make sure that there are no penetrations or obstructions that can cause uncontrolled movement or the platform to overturn Should be clearly marked with a safe working load limit or maximum rate capacity notice and Should not be used in high wind conditions or where there is risk of lightning 15 3 5 The following requirements are needed to provide for the safe use of mobile elevated work platforms Operators of boom lifts should be properly trained and competent for the job The level of training must be such that the operator is competent to carry out a visual inspection as
48. s identified to eliminate or to mitigate the risks E Enter all the information including all vital design change information affecting safety and health or remaining risks to be mitigated into the safety and health risk register More information on design for safety and the GUIDE process can be obtained from the Guidelines on Design for Safety in Buildings and Structures available at Workplace Safety and Health Council website www wshc gov sg 1 Workplace Safety and Health Council Guidelines on Design for Safety in Buildings and Structures Workplace Safety and Health Council 2008 3 1 3 1 1 3 1 2 3 1 3 3 1 4 3 2 3 2 1 3 2 2 Fall Protection Plan Implementing a Fall Protection Plan A fall protection plan is a site specific plan that is designed to be integrated into the Safety and Health Management System It provides a systematic approach towards eliminating or reducing the risk of falling from height by ensuring that all reasonable fall protection measures and methods have been taken prior to the commencement of the work All workplaces engaged in activities that require workers to work at height shall develop and implement a fall protection plan to ensure the safety of the workers during their course of work The fall protection plan is to be developed by a competent person Provisions must also be made for adequate supervision to ensure that the plan is being implemented at the workplace The fall protection
49. sential that persons performing supervisory roles must be competent and have the skills and knowledge of the work processes that they are to supervise Persons performing supervision roles must ensure that e Required safety measures are in place before the commencement of the work Workers are adequately supervised particularly when working in an elevated position and e Only workers who have received appropriate training and instruction in relation to the tasks they are to perform are to carry out the work 19 Section B Fall Control Measures 13 Access to and Egress from Work Areas 13 1 Access and Egress Risk and Assessment 13 1 1 Employers are to provide a safe means for people to get to and move around the work area The planning for the provision of suitable access and egress should take into account the tools and equipment that people will be required to carry 13 2 Access and Egress Safety Considerations 13 2 1 In providing safe and proper access to egress from a work area the following should be considered Installation of fixed work platforms walkways and stairways Use of temporary work platforms such as scaffolds and crawl boards Installation of fall arrest systems Frequency and number of people who may need access to or egress from the work area Supervision and regular inspection should also be considered Provision of safe work surfaces Method of getting equipment and materials to the work area Expo
50. sure of access ways to the weather for example rain can make surfaces slippery and strong winds can cause loss of hand grip Provision of adequate natural or artificial lighting to all access ways The clearance of obstructions so that persons are able to move easily to and from the workplace and Location and space required for any equipment or materials used or being temporarily stored Housekeeping and Material Storage The risk of falls due to tripping and slipping can be reduced by proper planning for material storage and good housekeeping Such good practices not only result in a cleaner and safer workplace it can also improve productivity 13 3 Roof Access 13 3 1 Employers and occupiers should provide their workers with a safe means of getting to and from the roof The access ways need to be in place before commencing work Access should be located where the work on the roof is to begin 20 For new roof installations or where extensive repair or replacement of existing roofs is planned it is recommended that a ladder access tower or a personnel and materials hoist be provided 13 3 2 After a roof membrane has been installed special provisions may need to be made if the roof is to be used as a platform for access egress work or storage If access and egress is required regularly a permanent system such as stairs may need to be installed Stairs should serve each floor of a building or structure that is being constructed or demol
51. t must not affect or interfere with the safe function of another Equipment that is safe for use in conventional situations may present risks to operators using industrial rope access systems The manufacturer of the equipment should be consulted to clear any ambiguity or doubt Use of tools The greatest danger in many cases is that of tools falling onto people below Hence small tools should be secured to the operator by lanyards Small items can be carried in buckets or bags fastened to the worker It is important to note that the combined weight of all the items carried must be within the safety factor of the system Traceability of equipment Equipment that is withdrawn from service must not be used without the inspection and approval of a competent person Defective equipment should be cut up or broken before disposal to prevent unauthorised retrieval and misuse Storage of equipment After usage equipment should be cleaned and dried Equipment should be stored unpacked in a cool dark dry location that is chemically neutral Items that may damage the equipment such as sharp objects or corrosive substances must not be stored in close proximity to the equipment If the equipment has been used in a marine environment they must be rinsed thoroughly in clean fresh water dried and inspected before storage 31 32 16 1 5 Where it is necessary for industrial rope access systems to be used Workers must be trained and possess a high le
52. t to be anchored to must be properly tightened The vertical pieces are better suited for anchorage than the horizontal pieces 17 2 Fall Arrest System Limitations 17 2 1 Individual fall arrest systems should only be used if it is not reasonably practicable to use other risk control measures to prevent falls Individual fall arrest systems require a moderate level of skill to use safely and in the event of an arrested fall it may cause some physical injury to the user 17 2 2 Height clearance is another limitation of individual fall arrest systems For a person falling from height the combined length of the lanyard sag in life line and the shock absorber fully extended may be more than 5m in total This 5m might be more than the actual height of the fall 17 2 3 Therefore when working in areas where falls over short distances are possible a short lanyard or retractable fall arrest block should be considered Anchorage A safety harness is able to provide protection from falls only if the harness is attached to a lanyard that is anchored 100 Percent Tie off The term 100 percent tie off means that anchorage is maintained at all times This is done to allow for fall protection even when transferring between 2 separate anchorage points A 100 percent tie off will require twin tailed lanyards that allow users to remain anchored to one point of anchorage with one lanyard while transferring to another point of anchorage with the second on
53. too long the worker will drop and hit the ground Fig 17 2 right diagram or the arrest line may break when contacting the edge of the roof and result in the worker hitting the ground Figure 17 2 Swing back left and swing down right hazards 17 5 Rescue of Workers Whoare Using Individual Fall Arrest Systems 17 5 1 Inthe event ofa fall the worker must be rescued as soon as possible This is necessary to prevent further injury Refer to paragraph 11 2 17 5 2 There should be written rescue procedures that must ensure that persons who fall can be rescued as soon as reasonably practicable if possible in less than 10mins The rescue procedures should include plans for e Preventing prolonged suspension Identifying symptoms of suspension trauma light headedness nausea paleness of skin hot flushes breathlessness and Performing rescue and treatment as quickly as possible 17 5 3 Aperson should not use a fall arrest system unless there is at least one other person present on site who is trained to conduct rescue operations in the event of a fall 17 5 4 It is recommended to prepare specialised rescue equipment that is designed and certified to cope with the additional load during rescue instead of improvising a rescue plan using existing equipment It must be noted that during rescue the loads placed on some items of equipment during a rescue may be higher than they have been originally designed for If equipment is
54. trained 11 2 Rescue Operations Fall Arrest Systems 11 2 1 The immediate rescue of a person after an arrested fall can prevent the onset of injuries such as suspension trauma which can occur when a person is suspended in a harness over a period of time 11 2 1 Emergency plans and rescue procedures to recover persons suspended in safety harness should consider the following The type of equipment required to carry out a rescue Such equipment must be suitable for use in all foreseeable situations in the workplace Existing equipment such as mobile elevated work platforms and scissor lifts may be used for conducting rescue if suitable e The installation of individual fall arrest systems and individual rope access systems should be at locations where it is possible to assist or rescue a person quickly if required e Ensure that all workers using fall arrest systems are familiar with devices before the commencement of work 18 e Make provision for access to first aid facilities or services including trained first aiders The rescue team should include a person or people trained in the provision of first aid so that it can be administered to the fall victim in the event of an injury occurring during a fall e The details of additional support facilities including the location contact information and availability of emergency services such as Singapore Civil Defence Force SCDF ambulance and hospitals and e Aneffective and readily
55. ttached to a static line or anchorage point and Is designed to restrict the travelling range of a person wearing the safety harness or belt so that the person cannot get into a position where the person could fall off an edge of a surface or through a surface Generally safety belts are better suited for travel restraint than fall arrest purposes 16 2 3 A roof anchor may be used as a travel restraint on steel sheeting or tiled roofs during construction of the roof It is lightweight portable and can be installed and removed with minimal time and effort 16 2 4 Travel restraint systems can be used in conjunction with other fall protection methods such as guard rails 16 2 5 Where it has been planned to use a travel restraint system the following conditions should be complied before the system is used The travel restraint system should prevent a person falling from the edge of a roof Fig 16 2 The system should not be used on fragile roofs and Persons setting up and or using the system should be able to demonstrate that they have a clear and thorough understanding of the system and how the work area can be accessed without the possibility of a fall occurring A travel restraint system is not designed to stop or sustain falls Restricted travel distance ry Anchorage Lifeline lanyard Safety belt A Figure 16 2 The travel restraint system prevents the user from reaching the open side 16 2 6 W
56. used for rescue either individually or in systems the supplier should verify that it has suitable performance and loading characteristics in that specific configuration This applies to all parts of the system in particular the anchors The anticipated loads during the rescue situation should be within the loadings specified in the manufacturer s user instructions 17 5 5 Certain situations may require at least two persons to safely rescue the fallen worker The rescue procedure must not put the rescuers at risk If a mobile elevated work platform is to be used for a rescue it should be readily available at all times should a person be using an individual fall arrest system 37 38 17 6 FallArrest System Components Harnesses Lines and Lanyards Shoulder straps Shoulder straps restrainer Fall arrest attachment Buckles Sub pelvic strap Thigh straps FRONT VIEW BACK VIEW Figure 17 3 Components of a fall arrest harness 17 6 1 A fall arrest harness Fig 17 3 is an assembly of interconnected shoulder and leg straps with or without a body belt designed to spread the load over the body and to prevent the wearer from falling out of the assembly 17 6 2 A lanyard is a line used usually as part of a lanyard assembly to connect a fall arrest harness to an anchorage point or static line A lanyard assembly should be as short as reasonably practicable 17 6 3 A fall arrest static line is a horizontal or ve
57. vel of competency Workers must be adequately supervised by a trained and competent rope access supervisor All workers should wear a sit harness with a separate chest harness and the worker should be attached at the central waist ventral point The above procedures when combined will provide fall arrest capabilities The following British Standards may be consulted for details pertaining to such equipment Sit harness BS EN 813 Chest harness BS EN 12277 Combination of sit harness and chest harness BS EN 361 Supervisors should ensure communication between personnel is sufficient for the task Procedures should be clearly understood by the worker Two independently anchored ropes should be used for each person Any person within 2m of an unguarded edge should be adequately secured Workers must not work alone in case assistance is required in an emergency Barricades and signposts should be placed on all access points to the base and anchorage locations for both public and workers Industrial rope access systems should only be installed in a location where it is possible to provide prompt assistance or rescue when necessary and An industrial rope access system is NOT designed to stop or sustain falls unless combined with a fall arrest lanyard 16 2 Travel Restraint Systems 16 2 2 A travel restraint system is a system that Consists of a safety harness or belt attached to one or more lanyards each of which is a
58. vement and vision e g welding A step platform is more stable and provides a much larger work surface than a step ladder Figure 18 4 A step platform can provide a more stable work surface 43 44 18 4 Safety Guidelines for Ladders 18 4 1 Observe the following safety guidelines when using ladders 18 4 2 When securing a ladder Use a 2 person team to transport ladders that are greater than 2m in height carry the ladder close to the body at elbow height Perform a check on the ladder before using it refer to paragraph 18 4 3 for details Do not paint or coat ladders such that flaws are unable to be spotted by users Do not handle or use ladders where the workers or the ladder may make contact with power lines or use metal or reinforced metal ladders in the vicinity of live electrical equipment Do not set up ladders in passageways doorways driveways or other places where a person vehicle or crane lifted load can hit it if the use of ladder is unavoidable erect a barrier or lock the door shut or as a last resort a person standing at the base Do not use the step ladder near the edge of an open floor or on scaffolding to gain extra height if the ladder topples the worker could fall over the edge Do not carry materials and tools by hand when ascending or descending the ladder Materials or tools which cannot be safely secured on the worker s belt should be independently trans
59. well as the functional tests of the mobile elevated work platform The ability to perform an adequate risk assessment is also vital for operators They should also be familiarised with the mobile elevated work platform to understand if the unit requires any specific precautions such as the need to deploy outriggers A risk assessment of the work and the area must be done by the operator before commencing any work This is to identify any unsafe conditions of the workplace or the need to implement any additional control measures A pre operation inspection must be performed by the operator before usage The inspection must include functional tests to determine if the mobile elevated work platform is in proper working condition There must be no unauthorised alteration or modification of the mobile elevated work platform or any of its safety devices or functions It is recommended that the load pressure at the contact points of the mobile elevated work platform with the ground be marked near the contact points This is to help in preventing accidental positioning of the work platform on surfaces which may not be able to sustain the weight of the work platform The operator must be able to recognise conditions such as hazardous terrain such as slopes or trenches They can result in work platforms tipping or falling over when moving over such terrain resulting in the possibility of the operator being thrown off the work platform Operators working

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