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1. 10 1 The dosimeter operates within the following modes e switching the dosimeter on off e switching display backlight on off e switching audio alarms on off e photon ionizing radiation DER measurement in search start stop and precise modes beta particles flux density measurement in search start stop and precise modes e audio alarm threshold levels programming e photon ionizing radiation DE measurement indication e setting of measurement results averaging time e recording measurement results and characteristics of the studied objects in the nonvolatile memory e measurement results history indication on the personal digital indicator e measurement results history recording in the database through the infrared port of data exchange IRDA e measurement results history recording in the database through the serial port of data exchange RS232 Note Type of the remote detecting unit is identified automatically after being connected to the dosimeter The dosimeter enters the measurement mode of the corresponding physical units photon ionizing radiation DER or beta particles flux density 13 10 2 Switching the dosimeter on off 10 2 1 Press shortly the ON button and hold it for 4 s to switch the dosimeter on The information displayed on the LCD and audio signaling of the detected gamma quanta or beta particles depending on the type of the connected remote detecting unit indicate that the dosimeter is o
2. C 3 The detecting unit includes the case consisting of the base 1 and the cover 2 and other component parts located inside The crucial component of the detecting unit is a printed circuit board 3 with the located CBT 10A 4 gas discharge counter fastened to the printed circuit board with the help of two posts and the elements of anode voltage former on the one side and the elements of the digital circuit of the detector dynamic characteristics compensation on the other side The printed circuit board 15 fastened to the base by the two headless screws 5 and two posts 6 The PC7 plug connector is fastened in the lower part of the base and 15 used for the connection with the control panel with the help of the cable removable panel filter is located on the cover and fixed by two clamps one of which is movable The panel is removed during operation with the detecting unit by pressing the clamp down transparent polyethylene terephthalate film glued to the corresponding projections from the inside of the cover is used to protect the movable clamp and the detector from dust and humidity Rubber gaskets 7 are used to protect the case of the detecting unit and the connector from dust and humidity The case elements the cover and the base are fastened together by three headless screws A U like rotary cramp 8 is fastened to the detecting unit by two original screws 9 in the middle part A holder 10 15 fastened to the cra
3. The dosimeter enters the mode of precise measurement after that 15 The time left until the process of measurement results averaging is finished is indicated in the right upper corner of the intensity indicator The interval of averaging is preset automatically when the dosimeter is switched on and equals min and until it is finished the LCD shows zeroes The result of averaging in the mode of precise measurement is updated every minute on the LCD Press shortly the PRECISELY button to manually update the averaging process result This will reset the previous average value and start a new averaging process Press the PRECISELY button once again and hold it down until multiple times blinking of all digits to exit the mode of precise measurement Note Average result can be also calculated in the search mode Press shortly the PRECISELY button not longer than 2 s to do this The result is displayed only when the PRECISELY button is pressed After the PRECISELY button is released the dosimeter returns to the search mode of DER measurement 10 6 Measurement of beta particles flux density in search start stop and precise modes 10 6 1 Connect the BDIB 07 detecting unit of beta particles through the X1 connector with the help of the connecting cable to the control panel of the dosimeter to measure beta particles flux density hereinafter flux density in search start stop and precise modes of measurement 10 6 2 Switch the dos
4. and until it is finished the LCD shows zeroes The result of averaging in the mode of precise measurement is updated every minute on the LCD Press shortly the PRECISELY button during precise measurement to manually update the averaging process This will reset the previous average value and start a new averaging process Press the PRECISELY button once again and hold it down until multiple times blinking of all digits to exit the mode of precise measurement Note Average result can be calculated also in the search mode Press shortly the PRECISELY button not longer than 2 s to do this The result is displayed only when the PRECISELY button is pressed After the PRECISELY button is released the dosimeter returns to the search mode 10 6 6 For automatic consideration of gamma background in the beta particles flux density measurement result in the precise mode first measure gamma background according to the 10 6 3 1 with the difference that measurement should be done during one averaging interval After gamma background measurement is finished record the result in the memory for further consideration subtraction by pressing the DOSE button and holding it down not less than 2 s The y blinking symbol appears at the bottom leftwards from the LCD digits indicating that the gamma background value is saved in the memory Gamma background will be automatically considered in further measurement of beta particles flux density with the opened win
5. the dosimeter should be deactivated Wipe its surface by a gauze tampon moistened by the standard decontaminating agent 9 PREPARATION FOR OPERATION 9 Preparation of the dosimeter for operation 9 2 Study the operating manual and the control buttons before putting the dosimeter in operation 9 3 Open the battery compartment of the control panel with the help of a screw driver Make sure the four batteries are inserted the connections are reliable and there is no leakage of salts after the long term storage of the dosimeter In case there is salt leakage remove the batteries Clean them if compartment 9 4 If the battery needs to be recharged which 15 indicated by the battery discharge symbol on the LCD all four battery symbol segments are blinking when the dosimeter is switched on and irrespective of the selected mode remove the storage battery from the battery compartment and recharge it with the help of the charger The recharge procedure is described in the guidelines provided with the charger Insert the charged batteries into the battery compartment observing the polarity and close the cover Note The storage battery should be recharged only after the battery discharge symbol appears on the LCD of the dosimeter 9 5 Connect the necessary remote detecting unit to the dosimeter with the help of the connecting cable through the X1 connector in the lower front part of the control panel of the dosimeter 10 OPERATION PROCEDURE
6. 5 2 3 Photon ionizing radiation DER or beta particles flux density measurement depending on the remote detecting unit connected to the control panel is performed automatically after the dosimeter is switched on Pulse signals are applied to the DPC input The DPC automatically selects measurement interval and range what depends on the intensity of the input pulses and operating mode of the dosimeter Scaling of the input pulse flow is performed by the DPC by means of the control parallel binary decimal code recorded in the nonvolatile memory Measurement results are indicated on the LCD depending on the selected operating mode of the dosimeter Each detected gamma quantum beta particle is followed by audio signals provided by the DPC and the loudspeaker LS 5 2 4 Photon ionizing radiation DE measurement is performed automatically after the dosimeter is switched on Measurement result is indicated on the LCD when the DOSE button is pressed Measurement range is automatically selected by the DPC Scaling of the input pulse flow from the built in detector is performed by the DPC by means of the control parallel binary decimal code recorded in nonvolatile memory 5 2 5 Threshold level programming is done by the PRECISELY and THRESHOLD buttons Exceeded threshold level is indicated by two tone audio alarms and periodical blinking of the LCD 5 2 6 The structure chart of the BDBG 07 unit is presented on Fig B 1 It includes eight gas dischar
7. automatically during 1 30 s depending on the volume of stored information Audio signaling and corresponding information displayed on the PC monitor indicate that transmission is correct 21 Note After the data is transmitted to the database the nonvolatile memory of the control panel of the dosimeter is reset 10 13 Measurement history data reading into the database through serial port RS232 10 13 1 To transmit measurement history into the database with the help of the serial port RS232 connect the control panel of the switched off dosimeter by means of the connecting cable through the X2 connector to COM port of the computer 10 13 2 Switch the dosimeter on Data transmission and recording in the PC database is performed automatically during 1 30 s depending on the volume of the stored information Audio signaling and corresponding information displayed on the PC monitor indicates that transmission 15 correct 10 13 3 Switch the dosimeter off before disconnecting the control panel of the dosimeter from the serial port Note After the data is transmitted to the database the nonvolatile memory of the control panel of the dosimeter is reset 11 TROUBLESHOOTING 11 1 Troubleshooting 15 presented in the Table 11 1 Table 11 1 Troubleshooting Probable cause Troubleshooting 1 No readings on the LCD at switching the dosimeter on 2 No changes in readings on the LCD at surface beta particles flux density measure
8. low order digit is blinking at that Correct the number of the object with the help of the THRESHOLD and PRECISELY buttons if necessary Shortly press the THRESHOLD button to change the blinking digit of the object number per unit To correct the next digit press shortly the PRECISELY button the latter starts blinking at that Press shortly the MEMORY button to record the measurement result and the number of the corresponding object in the memory One time blinking of the analogue indicator in the right upper field indicates that the result is recorded The dosimeter switches to the search mode afterwards 10 10 2 Press shortly the MEMORY button to record the precision measurement result and the number of the corresponding object in the nonvolatile memory The P symbol and three digits that stand for the number of the object appear on the LCD the low order digit starts blinking Correct the number of the object with the help of the THRESHOLD and PRECISELY button if necessary Shortly press the THRESHOLD button to change the blinking digit of the object number per unit To correct the next digit press shortly the PRECISELY button the latter starts blinking at that Press shortly the MEMORY button to record the measurement result and the number of the corresponding object in the memory One time blinking of the analogue indicator in the right upper field indicates that the result is recorded Note Recording in the nonvolatile memory of measur
9. radiation remote detecting unit not more kg than detecting unit not more than 5 3 1 1 The threshold level values of DER and beta particles flux density with a discreteness of a programmable unit in the whole operating measurement range are programmed in the dosimeter 3 1 1 1 The threshold level value of DER in the range of 0 to 9 99 10 uSv h with a discreteness of 0 1 uSv h is programmed in the dosimeter 3 1 1 2 The threshold level values of surface beta particles flux density in the range of 0 to 999 9 103 part cm min with discreteness of 0 01 10 part cm min are programmed in the dosimeter 3 1 2 The dosimeter allows automatic subtraction of gamma background at surface beta particles flux density measurement 3 1 3 The dosimeter allows performing measurement with results averaging time from 1 to 99 min in the precise mode and from 1 to 60 min in the start stop mode 3 1 4 The dosimeter allows results averaging time indication from 1 to 99 min in the mode of precise measurement 3 1 5 The dosimeter sends a single tone audio signal at detecting gamma quantum or beta particle and a two tone audio alarm if the programmed DER or beta particles flux density threshold level is exceeded 3 1 6 DER DE and surface beta particles flux density values as well as DER and surface beta particles flux density threshold level values in turns appear on the digital liquid crystal display LCD together with the corresponding symb
10. the BICT 412129 003 02 logbook labeling should be accurate Quality Control Department seals should not be violated the dosimeter should be free from mechanical damage that may affect its operability Note The completeness of the delivery kit is checked only after manufacture 12 4 2 Testing 12 4 2 1 Connect the remote detecting unit of gamma radiation to the control panel of the dosimeter and switch the dosimeter on Place the Cs gamma source of type near the detecting unit Observe the increase of DER counts above the background level on the LCD and audio signaling at detection of gamma quanta and audio alarm when the DER threshold level is exceeded 12 4 2 2 Connect the remote detecting unit of beta particles to the control panel of the dosimeter and switch the dosimeter on Place the detecting unit above the surface of the 6CO source and observe the increase of beta flux density counts above the background level and audio signaling at detection of beta particles and audio alarm when the threshold level of beta particles flux density is exceeded Note Set maximum threshold according to OM 10 7 to switch audio alarms of exceeded DER and beta particles flux density threshold levels off 12 4 3 Calculation of the main relative error of photon ionizing radiation DER measurement 24 12 4 3 Prepare the standard equipment VIIT7I 3B for operation according to its operating manual Prepare the dosimeter for
11. 2 the base 1 and other component parts inside it The crucial component of the detecting unit is a printed circuit board 3 with the eight 20 1 gas discharge counters 4 and one counter 5 on the one side and the elements of the anode voltage formers the elements of the digital circuit of the detector dynamic characteristics compensation on the other side All counters are fastened to the circuit board with the help of four clamps 6 and contact points 7 The PC7 8 plug connector is fixed in the lower part of the case and 15 used for connection of the control panel with the help of the cable The rubber gaskets 9 10 are used to protect the connector and the case of the device from dust and humidity The case elements the cover and the base as well as the printed circuit board are fastened together by six headless screws A spring 11 used to fasten the detecting unit to the waist belt is fixed in the top part of the detecting unit A U like rotary cramp 12 is fastened to the unit by two original screws 13 in the middle part A holder 14 is fastened to the cramp and connected to the telescopic tube used for measurement in hard to reach places protection cover 15 is used to protect the PC7 connector during storage 5 3 4 The remote detecting unit of beta particles BDIB 07 hereinafter called the detecting unit is designed as a rectangular parallelepiped with side slants and rounded corners fig C 2
12. 5 Calculation of main relative Yes Yes error of beta particles flux 12 4 5 density measurement 6 Determination of energy Yes No dependence of photon ionizing 12 4 6 radiation 12 2 Verification facilities The following measuring instruments should be used for verification 12 2 1 standard equipment with gamma sources category 2 12 2 2 Standard sources category 2 of 6CO type on hard pads containing 9 Sr radionuclides 12 2 3 Customized test instrument with Cs source of type 12 2 4 Equipment used for verification of the dosimeter should ensure supporting the 6CO type sources and mounting of the beta particles detecting unit 23 12 2 5 Electronic stop watch All verification facilities should have a valid verification certificate or state metrological certification Note Use of other standard measuring instruments that meet the specified accuracy 15 allowed 12 3 Verification conditions 12 3 1 The verification test should be carried out under the following conditions ambient air temperature 205 C relative humidity 65 15 90 atmospheric pressure from 84 to 106 7 kPa natural gamma background of not more than 0 25 uSv h power supply voltage of 4 8 0 2 V 12 4 Verification procedure 12 4 1 External examination During external examination the dosimeter should meet the following requirements the delivery kit should be completed as described in section 3 of
13. 7 remote detecting unit of gamma radiation with the help of the connecting cable through the XI connector to the control panel of the dosimeter 10 5 2 Switch the dosimeter on The y symbol and uSv h measurement units of photon ionizing radiation DER and measurement results in the search mode should appear on the LCD Digital data on the LCD is updated each 2 to 0 5 seconds depending on the measured DER level Time subrange and measurement unit are selected automatically The analogue intensity symbol analogue indicator consisting of 20 segments together with the digital measurement results simultaneously appear in the right upper field of the LCD The number of segments 15 proportional in pseudo logarithmic scaling to the measured intensity Response time of the analogue indicator is not longer than 1 s During DER measurement each gamma quantum is followed by a short audio signal while the exceeding of threshold level is followed by a two tone audio alarm and periodic blinking of the LCD The arithmetic average of five last measurements should be considered as the DER measurement result in search mode DER measurement units are uSv h mSv h or Sv h 10 5 3 Press the PRECISELY button and hold it for 3 s in the search mode to start the process of measurement results averaging in the start stop mode The averaging process is started the digits blink several times and the last right segment of the analogue intensity i
14. ENDIX A Figure 2 Control panel Figure 3 Control panel with the removed cover 31 APPENDIX B BDBG 07 detecting unit of gamma radiation Figure B 1 Structure chart of the BDBG 07 detecting unit of gamma radiation Figure B 2 BDBG 07 unit 32 APPENDIX B 10 Figure B 3 BDBG 07 unit with the removed cover 33 APPENDIX C BDIB 07 detecting unit of beta particles D He HH Figure C 1 Structure chart of the BDIB 07 detecting unit of beta particles Figure 2 BDIB 07 unit 34 APPENDIX C Figure C 3 BDIB 07 unit with the removed cover 35 APPENDIX D Figure D 1 Telescopic tube 36 APPENDIX E 137 Anisotropy of the 330 BDBG 07 dosimeter radiometer MKS 07 horisontal plane 30 e o 270 Co 60 120 210 450 180 Anisotropy of the 137 BDBG 07 dosimeter radiometer 24 MKS 07 vertical plane 300 60 60 va LARA A ee Dr 90 I 4 120 Figure E 1 37
15. ENDIX E coupe uU Oe 37 1INTRODUCTION 1 1 Technical description and operating manual hereinafter called the OM is intended to inform the user about the principles of operation and rules of application of the MKS 07 POSHUK search gamma beta dosimeter radiometer The manual contains all information necessary for proper operation of the dosimeter and full realization of its technical possibilities 1 2 The OM contains the following abbreviations DE ambient dose equivalent DER ambient dose equivalent rate ON power on button DISPLAY display backlight button DOSE DE measurement indication button THRESHOLD DER and beta particles flux density threshold level programming button PRECISELY average measurement result indication button MEMORY memory storage and memory reading button 2 PURPOSE OF USE The MKS 07 POSHUK search gamma beta dosimeter radiometer hereinafter called the dosimeter is designed to measure ambient dose equivalent DE and ambient dose equivalent rate DER of gamma and X ray radiation hereinafter called the photon ionizing radiation and surface beta particles flux density The dosimeter is intended for dosimetry and radiometry control at industrial enterprises nuclear power plants and at research institutions The unit can be used for apartment building and housing construction monitoring for ground surface and vehicles radiation monitoring and for personal radiation safe
16. MKS 07 POSHUK SEARCH GAMMA BETA RADIATION DOSIMETER RADIOMETER Technical description and operating manual BICT 412129 003 02 TO Dear user You had chosen well if purchased a device of ECOTEST trademark manufactured by the Sparing Vist Center The unit will reliably operate during many years Should you have any questions concerning its use please contact managers telephone 38 032 242 15 15 fax 38 032 242 20 15 or e mail sales ecotest ua We would greatly appreciate to receive your comments on its operation The device is under 18 month free of charge guarantee maintenance Best regards International Sales Department CONTENTS LINTRODUTGTI ON iecore tit ne hetero 2 2PURPOSEJOF USE cerneret 2 3 TECHNICAL 2 4 DELIVERY oct avri ttn rr 7 5 DESIGN AND PRINCIPLES OF 8 6 LABELING AND SEALING 12 7 USE OF THE DOSIMETER eee 12 SOAEETY MEASURES s iet 12 9 PREPARATION FOR OPERATION eee 12 10 OPERATION 0 13 11 TROUBLESHOOTING 22 12 VERIPICA TION 9 23 13 SHIPPING AND 29 TA DISPOSA De 29 APPENDIX A NENEN 30 APPENDIX G s EEEE 32 APPENDIX C sees ein A E R RR A RES 34 APPENDIX T pr eie E 36 APP
17. ain relative permissible error limit of surface beta particles flux density measurement with 0 95 confidence probability in precise measurement 25 mode p in search mode part cm min where is numeric value of measured surface flux density i in part cm min Energy range of detected beta fs 015 300 15 3 00 particles Operating supply voltage of the dosimeter from the storage battery four AA batteries Additional relative permissible error limit at measurement caused by supply voltage variations from 5 2 to 4 2 V Additional relative permissible error limit at measurement caused by ambient air temperature variations from 25 to 55 C Time of operating mode setting not more than Battery lifetime storage battery of 900 MA h capacity at natural background radiation and switched off display backlight not less than Unstable readings of the dosimeter during 6 hours of continuous operation not more than per each 10 C deviation from 20 C Table 3 1 continued Useful current of the dosimeter at operating supply voltage of 4 8 V natural background and switched off display backlight not more than Dimensions of the control panel Dimensions of the remote detecting unit of gamma mm 80x36x214 radiation not more than Dimensions of the remote detecting unit of beta particles mm 82x43x154 not more than the dosimeter not more than 8 Weight of gamma
18. ator Press shortly the PRECISELY button once again and the measurement result referring to the predefined number of the object will be indicated on the digital indicator 10 11 3 To search for measurement results by the specific ordinal numbers of the objects enter the mode of the object feature indication symbol and three decimal digits according to 10 11 2 Shortly press the MEMORY button to find the required recorded ordinal number Press shortly the PRECISELY button after finding the required ordinal number to indicate the measurement result of this object 10 11 4 Press the MEMORY button and hold it pressed not less than 2 s to exit the mode of indication of the measurement history 10 12 Measurement history data reading into the database through infrared port IRDA Transmission of the measurement history data into the database through the infrared port can be done only in the search mode with the help of the PC installed custom software Before data transmission from the control panel of the dosimeter the PC custom software should be launched in accordance with the user s manual and be ready to read data through infrared port To transmit the switched on control panel of the dosimeter should be located opposite the infrared port adapter so that the window of the infrared port of the control panel was parallel to the window of the adapter at not more than 30 cm Data transmission and recording in the PC database is performed
19. d surface Fulfill five measurements of gamma background of the studied surface and calculate the arithmetic average 10 6 3 2 Remove the panel filter from the window of the beta detector and place the detector parallel to the studied surface Fulfill five measurements and calculate the arithmetic average 10 6 3 3 Calculate surface beta particles flux density according to the formula 5 1 where is the real value of beta particles flux density in part cm min 95 is the average value of the dosimeter readings of the studied surface and outside gamma background the detector 1s not protected by the panel in part cm min 2 is the average value of the dosimeter readings of the studied surface and outside gamma background the detector 15 protected by the panel in part cm min 10 6 4 To start the process of measurement results averaging in the start stop mode press the PRECISELY button in the search mode and hold it down for 3 s This triggers the process of averaging and multiple blinking of digits and lighting of the last right segment of the analogue intensity indicator on the LCD The LCD displays measurement results in the search mode and the analogue indicator first 19 segments indicates the intensity of surface flux density measurement Press the PRECISELY button once again and hold it down for 3 s to finish the process of averaging The average result calculated for the pe
20. dow of the beta detector Note Measure and record gamma background of each new object when the object of study is changed 10 7 Programming of audio alarm threshold levels 10 7 1 Connect the corresponding detecting unit and switch the dosimeter on to program threshold levels of audio alarm relative to gamma or beta radiation 10 7 2 Press the THRESHOLD button and hold it pressed The default programmed threshold level value 0 3 uSv h for DER 0 02 10 part cm min for surface flux density appears on the LCD Hold the button down for 2s This resets the previously programmed threshold level and the dosimeter enters the mode of new threshold level programming which 15 indicated by the blinking low order digit on the LCD To set the digit value release the TRESHOLD button and by short pressing of the THRESHOLD button set the required value To set the next digit press shortly the PRECISELY button the digit will start blinking afterwards By short pressing of the THRESHOLD button set the digit Programming of other digits is done likewise with automatically shifting comma After all values are set by short pressing of the PRECISELY button the threshold level value is saved in the memory which is indicated by triple blinking of the LCD 10 7 3 Press the THRESHOLD button and hold it down not longer than 2 s to check the programmed threshold level of audio alarm 10 7 4 Press the THRESHOLD button and hold it down more than 2 s
21. e liquid crystal display 7 15 located on the display board Four light emitting diodes are used for the display backlight The digital processing and display boards make up a separate crucial component of the control panel that is screwed to the case with four screws The battery compartment with the contact system and four nickel cadmium AA batteries 15 located in the middle part of the control panel The battery compartment 15 closed by the screwed cover Two PC7 and plug connectors used for connection with the remote detecting units by means of the cable PC7 and RS232 PC4 interface are located in the bottom of the case Protective covers 8 are used for protection of the plug connectors Two panels 9 10 six control keys 11 of the dosimeter and two special screws 12 used for fastening of the device to the waist belt are placed in the top part of the control panel The IR port window 13 1s located on the cover under the panel with the control keys Component parts of the case are screwed together by four screws Rubber gaskets 14 and polyethylene terephthalate films are used to protect the plug connectors the battery compartment and the control panel from dust and humidity 5 3 3 The remote detecting unit of gamma radiation BDBG 07 hereinafter the detecting unit is designed as a rectangular parallelepiped with side slants and rounded corners fig B 2 B 3 The detecting unit includes the case consisting of the cover
22. e operator s dose and remote detecting units of gamma radiation and beta particles The detecting units convert radiation into the sequence of voltage pulses the number of pulses 1s proportional to the detected radiation intensity The control panel serves to perform e scaling and linearization of the counting response of the built in gamma detector e scaling of the counting response of the remote detecting units of gamma radiation and beta particles e measurement of photon ionizing radiation DER by measuring the average output pulse frequency of the gamma radiation detecting unit e measurement of beta particles flux density by measuring the average output pulse frequency of the beta particles detecting unit e measurement of photon ionizing radiation DE by measuring the total number of output pulses of the built in gamma radiation detector 5 1 2 The operating principle of the detecting units is based on converting ionizing radiation into voltage pulses in the ionization chamber of the detectors The pulses are coming to the input of the amplitude modulated device 5 1 3 The dosimeter is controlled fig A 2 A 3 with the help of the ON DISPLAY DOSE THRESHOLD PRECISELY and MEMORY buttons 11 5 1 4 Measurement result is indicated on the four digit liquid crystal display 7 5 1 5 Gamma quanta or beta particles detected by the remote detecting units are followed by audio signaling and exceeded DER or flux density threshold level
23. ement results and numbers of the studied objects at surface beta particles flux density measurement is possible only after the previous measurement and recording of gamma background value of the object blinking y symbol on the LCD in accordance with OM 10 6 6 20 10 11 Measurement history indication on the LCD The dosimeter provides search and indication of the recorded in the memory measurement results and characteristics ordinal numbers of the corresponding objects on the LCD The above should be done in the search mode of measurement 10 11 1 Press shortly the MEMORY button to enter the mode of measurement history review The last by order recorded measurement result is indicated on the LCD and the analogue 20 segment indicator in the upper right field between the fixed first left and last right segment will show one more segment which will occupy the last but one position to the right on the LCD This segment indicates the last recorded measurement result Press shortly the MEMORY button to shift the segment of the conventional index of the order of the recorded results from the last result to the previous one and to change the readings on the digital indicator 10 11 2 Press shortly the PRECISELY button to define the number of the object referring to measurement result indicated on the digital indicator As a result the symbol and three digit decimal number which is the number of the object will appear on the indic
24. ence of the dosimeter relative to photon ionizing radiation does not exceed 25 95 12 5 Presentation of the verification results 12 5 1 Positive results of the primary or periodic verification test are registered as follows 1 Primary verification is registered in the Certificate of acceptance section of the logbook 2 Periodic verification is registered in the issued Certificate of the established form or in the Periodic verification of key specifications section of the logbook 28 12 5 2 The dosimeters that do not meet the abovementioned requirements are not allowed for manufacture and use and get the Certificate of Inadequacy 13 SHIPPING AND STORAGE 13 1 Shipping 13 1 1 The detecting units in the shipping container of the producer enterprise can be shipped by railway motor water and air transport at any distances provided the following conditions are satisfied by railway transport in a dry box car by air transport in pressurized compartments by water transport in a ship s hold by motor transport in a closed car 13 1 2 The dosimeters in shipping container should be placed and fastened to ensure their stable position and to avoid shocks 13 1 3 Not more than five dosimeters may be shipped in a shipping container of the producer enterprise Stacking of the dosimeters should be vertical 13 2 Storage 13 2 1 The dosimeters in packing should be stored indoors at the ambient air tem
25. er the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 3 6 Place the holder together with the unit in the position where DER from Cs source is 8 10 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 3 7 Place the holder together with the unit in the position where DER from Cs source is 1 105 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 3 8 Prepare the dosimeter for measurement of photon ionizing radiation DER in the precise mode 25 Take readings for each DER value listed in 12 4 3 1 12 4 3 7 in the holder to calculate the main relative error in the precise mode Register the received result of precision measurement in the protocol calculate the main relative error of measurement 12 4 3 9 The dosimeter is acknowledged to have passed the verification test if the main relative error of measurement for each DER level does not exceed the value calculated by the formula ad 10 2254 in the search mode and 10 ad 10 15 E in the precise mode where H 10 is a numeric value of 1 measured DER in n Sv h 12 4 4 Calculation of the main relative er
26. ge CbM 20 1 type detectors of the high sensitivity channel DHS the gas discharge type detector of the low sensitivity channel DLS the anode voltage formers and AVF2 the modulator of the high sensitivity channel MH the modulator of the low sensitivity channel ML the digital circuit of the dynamic characteristics compensation CCC of the detectors 5 2 7 The structure chart of the BDIB 07 unit 15 presented on the fig C 1 It includes the low background end window gas discharge beta detector of 10A type BD the anode voltage former AVF the modulator M the digital circuit of the dynamic characteristics compensation CCC of the detectors 5 3 Design description 5 3 1 The dosimeter consists of e control panel e BDBG 07 remote detecting unit of gamma radiation BDIB 07 remote detecting unit of beta particles e telescopic tube 5 3 2 The control panel of the dosimeter fig A 2 A 3 is a small measuring device designed as a rectangular parallelepiped with rounded corners The control panel includes the case consisting of the base 1 the frame 2 and the cover 3 and other component parts located inside The crucial component of the control panel is the printed circuit board of data digital processing 4 with the built in detector control keys and other circuit elements The display board 5 15 fastened to the printed circuit board in the top part by the two plates 6 and screws Th
27. gether with the dosimeter in the position where DER from Cs source is 6000 0 uSv h Fix the previous DE value already accumulated on the digital indicator for further consideration and simultaneously switch on the stop watch 26 Register the DE measurement result after 10 minutes of irradiation according to the stop watch calculate the main relative error of measurement 12 4 4 4 The dosimeter is acknowledged to have passed the verification test if the main relative error of DE measurement does not exceed 15 95 Note Press the DOSE button on the control panel of the dosimeter once again and release it in 5 s to exit the mode of fixed DE measurement indication 12 4 5 Calculation of the main relative error at beta particles flux density measurement 12 4 5 1 Prepare the dosimeter for beta particles flux density measurement in the search mode in accordance with the OM section 10 Place the detecting unit of beta particles above the 6CO source surface providing surface beta particles flux density from 50 to 100 part cm min so that the work surface of the detector completely covered the active surface of the source Perform measurements of beta particles flux density according to the OM 10 6 3 Register the received readings in the protocol calculate the average value of beta particles flux density and the main relative error of measurement 12 4 5 2 Place the detecting unit of beta particles above the 6CO source surface pro
28. hoton ionizing radiation 12 4 6 1 Prepare the dosimeter for gamma radiation DER measurement in the search mode in accordance with the OM 10 Prepare the equipment for operation in accordance with its operating manual Fix the dosimeter in the holder so that the mechanical center of gamma beam coincides with the center of the gamma detector Place the holder with the detecting unit of gamma radiation hereinafter the unit in the position where DER from 2 source is 10 0 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 6 2 Place the holder with the unit in the position where DER from Cs source is 10 0 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 6 3 Place the holder with the unit in the position where DER from source is 10 0 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement Estimate energy dependence of the dosimeter readings for 59 keV 2 1 3 MeV and 0 66 MeV Cs energies in percentage 12 4 6 4 The dosimeter is acknowledged to have passed the verification test if energy depend
29. imeter on The symbol and 10 cm min measurement units of beta particles flux density and measurement results in the search mode should appear on the LCD Digital data on the LCD is updated each 2 to 0 5 seconds depending on the level of measured beta particles flux density Time subrange and measurement units are selected automatically The analogue intensity symbol analogue indicator presented by 20 segments and digital results are indicated in the upper right field of the indicator The number of lit up segments is proportional in pseudo logarithmic scale to measured intensity Response time of the analogue indicator is not more than 1 s During beta particles flux density measurement each detected beta particle is followed by a short audio signal and a two tone audio alarm and periodic blinking of the LCD follows the exceeding of the threshold level Consider the arithmetic average of five measurement results in the search mode as a result of beta particles flux density measurement Flux density measurement units are 10 part cm min 10 6 3 For automatic consideration of gamma background in the beta particles flux density measurement result first measure gamma background of the beta detector and then integral gamma beta ionizing radiation flow To do this 10 6 3 1 Place the detecting unit with the window closed by the panel filter in the position where the window is parallel and at minimum distance to the studie
30. measurement of photon ionizing radiation DER in the search mode Fix the remote detecting unit of gamma radiation hereinafter the unit in the holder so that the mechanical center of gamma beam coincides with the center of the unit Place the holder and the unit in the position where ambient DER from Cs source is 0 8 n Sv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 3 2 Place the holder and the unit in the position where DER from the 137Cs source is 8 0 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 3 3 Place the holder and the unit in the position where DER from the 1375 source is 80 0 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average value of DER and the main relative error of measurement 12 4 3 4 Place the VIIT7I 3B holder together with the unit in the position where DER from Cs source is 8 10 uSv h Perform five DER measurements Register the received readings in the protocol and calculate the average DER value and the main relative error of measurement 12 4 3 5 Place the holder together with the unit in the position where DER from Cs source is 8 10 uSv h Perform five DER measurements Regist
31. ment 3 No changes in readings on the LCD at photon ionizing radiation DER measurement 1 Storage battery discharged 2 No contact between the batteries Conductor break of the cable of the remote detecting unit of beta radiation Conductor break of the cable of the remote detecting unit of gamma radiation 22 Recharge the storage battery 2 Remove and clean the batteries replace if necessary Find and remove the break Find and remove the break 11 2 In case of failure or troubles during the warranty period of the dosimeter the user should contact the enterprise producer by e mail see below to receive the address of the nearest service center PE SPPE Sparing Vist Center Tel 38 032 242 15 15 Fax 38 032 242 20 15 E mail sales ecotest ua 12 VERIFICATION The verification of the dosimeter should be performed after manufacture and repair or during maintenance periodically at least once a year 12 1 Verification procedure During verification the operations presented in the Table 12 1 should be performed Table 12 1 Verification procedure Operation 1s Operation is required for Operation is required for Operation name OM section Primary Periodic ccc epa NE e 3 Calculation of main relative Yes Yes error of photon ionizing 12 4 3 radiation DER measurement 4 Calculation of main relative Yes Yes error of photon ionizing 12 4 4 radiation DE measurement
32. mp and connected to the telescopic tube used for measurement in hard to reach places A protection cover 11 15 used to protect the PC7 connector during storage 11 6 LABELING AND SEALING 6 1 The trademark of the enterprise the name the symbol of the unit and the approval pattern of the measuring instrument are inscribed on the control panel of the dosimeter 6 2 The factory serial number and the date of manufacture are inscribed on the lower cover of the dosimeter 6 3 Sealing of the dosimeter is done by the manufacturer The lower cover of the control panel under the storage battery is sealed in the pockets for the fastening screw heads 6 4 Removal of seals and repeated sealing of the dosimeter is done by the manufacturer after repair and verification testing 7 USE OF THE DOSIMETER 7 1 Before putting the dosimeter into operation check if the delivery kit is complete Inspect for mechanical damage 7 2 Before using the dosimeter that was put in prolonged storage remove it from storage and check its operability 7 3 Register the removal from storage and putting the dosimeter in operation in the logbook 8 SAFETY MEASURES 8 1 A special protection jacket is used to protect from accidental contact with conductive parts Ingress protection rating is IP51 8 2 The dosimeter belongs to fire safety equipment 8 3 Radiation safety requirements should be met while working with ionizing radiation sources In case of contamination
33. n 10 2 2 Press the ON button once again and hold it pressed for 4 s to switch the dosimeter off 10 3 Switching display backlight on off 10 3 1 Press shortly the SCALE button to switch the display backlight on Information on the LCD illuminated by the light emitting diodes below it indicates that the backlight is on 10 3 2 The display backlight is switched off automatically in 8 s after it is turned on 10 3 3 Press the SCALE button and hold it for 4 s to switch on the continuous display backlight 10 3 4 Press shortly the SCALE button once again to switch the display backlight off 10 4 Switching audio alarm on off 10 4 1 Audio signaling of detected gamma quanta or beta particles depending on the type of the connected remote detecting unit and exceeded programmed threshold levels of photon ionizing radiation DER or beta particles flux density is switched on automatically after the dosimeter is turned on 10 4 2 Press shortly the ON button to switch audio signaling off This switches off only audio signaling of detected gamma quanta or beta particles while audio alarms when the programmed threshold levels are exceeded are still triggered 10 4 3 Press shortly the ON button to switch audio signaling on again 10 5 Measurement of photon ionizing radiation DER in search start stop and precise modes 10 5 1 To measure photon ionizing radiation DER hereinafter DER in search start stop or precise mode connect the BDBG 0
34. ndicator is lit on the LCD Measurement results are further indicated on the LCD in the search mode and the analogue indicator first 19 segments represents the measured DER intensity Press the PRECISELY button once again and hold it for 3 s to stop the process of averaging The average result during the period of operation in this mode is indicated on the LCD and all 20 segments of the analogue indicator enter the mode of continuous illumination which indicates that the start stop averaging mode is stopped Return to the search mode can be done after recording or not recording the average result in the nonvolatile memory Recording in the nonvolatile memory is done as described in OM 10 10 Press the PRECISELY button and hold it for 3 s to return to the search mode without recording the results After the digits blink several times the dosimeter enters the search mode The time of measurement results averaging is limited to one hour If not stopped by the operator in one hour the process will be stopped automatically and the LCD will display the average result while all 20 segments of the analogue indicator will enter the mode of continuous illumination 10 5 4 Press and hold the PRECISELY button in the search mode to enter the mode of precise measurement This is followed by multiple blinking of the digits the first blinking in some 3 s and the second one in about 6 s Release the PRECISELY button during the second blinking of digits
35. ols 3 1 7 The dosimeter allows recording of up to 4096 measurement results of photon ionizing radiation DER or beta particles flux density in the nonvolatile memory and up to 999 numbers of the studied objects as well as independent self recording of dose accumulation history with 15 minute time interval of photon ionizing DE records 3 1 8 The dosimeter allows alternate indication of the history of photon ionizing DER measurements or beta particles flux density on the LCD together with the numbers of the studied objects and data transmission to the PC database through infrared port IRDA or serial interface RS232 3 1 9 Mean time to failure not less than 6000 h 3 1 10 Average resource of the dosimeter till the first major repair not less than 10000 h average lifetime until the first major repair not less than 6 years 3 1 11 Average maintenance term not less than 6 years 3 1 12 The dosimeter performs measurement under the following conditions temperature from minus 25 to 55 C relative humidity up to 100 95 at 30 C atmospheric pressure from 66 to 106 7 kPa 3 1 13 The dosimeter 15 resistant to sinusoidal vibrations of N1 group 3 1 14 The dosimeter endures shocks with the following parameters shock pulse duration from 5 to 6 ms pulse rate from 40 to 180 per minute number of shocks 1000 10 maximal shock acceleration 50 m s 3 1 15 The dosimeter endures exposure to constan
36. perature from 5 to 40 C and relative humidity up to 80 at the temperature of 25 C 13 2 2 The dosimeters without packing should be stored indoors at the ambient air temperature from 10 to 35 C and relative humidity up to 80 at the temperature of 25 C 13 2 3 The composition of dust acid and alkali vapors aggressive gases and other harmful admixtures that may cause corrosion in the buildings where the dosimeters are stored should not exceed the composition of corrosion elements for the atmosphere of the 1 type according to the Ukrainian standards 13 2 4 The location of the devices in the storehouses should ensure their free transference and access to them 13 2 5 The distance between the walls the floor of the storehouses and the dosimeters should be not less than 1 m The distance between the heating gadgets of the storehouses and the devices should be not less than 0 5 m 14 DISPOSAL Disposal of dosimeters is performed as follows metals are processed melted plastic details are dumped Disposal of the dosimeters is not dangerous for the service personnel and is environmentally friendly The dosimeters should be disassembled in accordance with the established by the enterprise user procedure 29 APPENDIX A MKS 07 POSHUK search dosimeter radiometer of gamma beta radiation DPU MEMORY PRECISELY THRESHOLD Figure 1 Structure chart of the dosimeter 30 APP
37. riod of operation in this mode is displayed on the LCD and all 20 segments of the analogue indicator enter the mode of continuous illumination indicating that the start stop mode of averaging is finished Return to the search mode can be done after recording or not recording the average result in the nonvolatile memory Record the results in the nonvolatile memory according to the OM 10 10 Press the PRECISELY button and hold it down for 3 s to return to the mode without recording After multiple blinking of digits the dosimeter enters the search mode 17 The time of measurement results averaging is limited to one hour If not stopped by the operator in one hour the process will be stopped automatically and the LCD will display the average result while all 20 segments of the analogue indicator will enter the mode of continuous illumination 10 6 5 Press the PRECISELY button in the search mode and hold it to enter the mode of precise measurement It is followed by multiple blinking of digits the first one in some 3 s and the second one in some 6 s Release the PRECISELY button after the second blinking of digits After the button 15 released the dosimeter enters the mode of precise measurement The time left until the process of measurement results averaging is finished is indicated in the right upper corner of the intensity indicator The interval of averaging is preset automatically when the dosimeter is switched on and equals 1 min
38. ror at photon ionizing radiation DE measurement 12 4 4 1 Prepare the dosimeter for photon ionizing radiation DE measurement in accordance with the OM section 10 Press the DOSE button on the control panel of the dosimeter and hold it down for 5 s to fix the mode of photon ionizing radiation DE indication on the digital display Prepare the verification equipment for operation according to its operating manual Fix the control panel of the dosimeter in the holder so that the mechanical center of gamma beam coincides with the center of the gamma detector Place the holder together with the control panel of the dosimeter in the position where DER from Cs source is 60 0 uSv h Fix the previous DE value already accumulated on the digital indicator for further consideration and simultaneously switch on the stop watch Register the DE measurement result after 60 min of irradiation according to the stop watch and calculate the main relative error of measurement 12 4 4 2 Place the holder together with the dosimeter in the position where DER from Cs source is 600 0 uSv h Fix the previous DE value already accumulated on the digital indicator for further consideration and simultaneously switch on the stop watch Register the DE measurement result after 30 min of irradiation according to the stop watch calculate the main relative error of measurement 12 4 4 3 Place the holder to
39. s are followed by two tone audio alarms 5 1 6 The dosimeter operates from the storage battery of four AA nickel cadmium batteries The storage battery is charged by the purchased charger included in the delivery kit 5 2 Operation principle 5 2 1 The structure chart of the dosimeter is presented in Figure A 1 The dosimeter includes the storage battery SB the data processing unit DPU and the BDBG 07 and BDIB 07 remote detecting units of gamma radiation and beta particles The DPU includes the built in detector of gamma dose of the operator BD the modulator M the connection circuit of the dosimeter CC the voltage supply regulator of the digital processing circuit VR1 the voltage supply regulator of the remote detecting units VR2 the anode voltage former of the built in detector VF the standard frequency generator SFG the digital processing circuit DPC the digital liquid crystal display LCD the ON DISPLAY DOSE THRESHOLD PRECISELY and MEMORY buttons and the loudspeaker LS 5 2 2 Press the ON button and hold it for 4 s to switch the dosimeter on The supply voltage from the SB is applied at the input of the connection circuit CC of the dosimeter activating the and VR2 voltage regulators Regulated supply voltage from the regulator is applied to the DPU nodes and from the VR2 regulator to the remote detecting units Press the ON button and hold it for 4 s to switch the dosimeter off
40. t or alternating magnetic fields of 40 A m 3 1 16 The dosimeter in shipping container endures environment temperature from minus 50 to 55 relative humidity up to 95 95 at 35 C shocks with acceleration of 30 m s and frequency from 10 to 120 shocks per minute number of shocks 15000 3 1 17 The dosimeter endures exposure to photon radiation with exposure dose rate corresponding to ambient dose equivalent rate up to 200 Sv h during 5 min or 2 0 Sv h during 500 min 3 1 18 Ingress protection rating IP51 4 DELIVERY KIT 4 1 The delivery kit consists of units and maintenance documentation presented in the Table 4 1 Table 4 1 Delivery kit of the dosimeter BICT 468382 002 02 Control panel 1 manual customer s BDBG 07 BICT 467979 002 02 Ban Toa 1 radiation detecting unit mI BICT 412129 003 02 Logbook request BICT 412129 003 02 TO BDIB 07 beta BICT 305636 001 Packing box x BICT 467979 003 02 particles detecting unit BICT 304592 001 Telescopic tube Purchased 1 Model is not battery charger specified Serial port Supplied at BICT 686423 002 connecting 1 customer s BICT 686423 001 Connecting 1 cable cable request Technical description and Model is not specified operating Infrared port Supplied at adapter 5 DESIGN AND PRINCIPLES OF OPERATION 5 Overview 5 1 1 The dosimeter kit includes the control panel with the built in gamma detector used to measur
41. to reset the threshold level of audio alarm This will reset the previously programmed value and start programming of a new threshold level 10 8 Indication of photon ionizing radiation DE measurement 10 8 1 Photon ionizing radiation DE hereinafter DE measurement is performed irrespective of the selected mode of measurement and is started after the dosimeter 15 switched on 10 8 2 Press the DOSE button and hold it down not longer than 2 s to display DE measurement result on the LCD The y symbol and mSv symbols indicate you have entered the appropriate mode DE measurement result is displayed in mSv 10 8 3 Release the DOSE button to return to the previous operating mode of the dosimeter 10 8 4 Press the DOSE button and hold it down until the multiple blinking of the LCD to switch to the fixed mode of DE indication Return to the search mode likewise 10 9 Time setting of measurement results averaging The time of results averaging in the mode of precise measurement that equals 1 min is preset automatically after switching the dosimeter on 10 9 1 Enter the mode of precise measurement to check the time of averaging and to set a new value according to 10 5 4 at photon ionizing DER measurement or according to 10 6 5 beta particles flux density measurement Press the THRESHOLD button afterwards and hold it down not longer than 2 s Two left steady digits on the LCD display the value of the averaging time in minutes
42. ty 3 TECHNICAL SPECIFICATIONS 3 1 Specifications are presented in the Table 3 1 Table 3 1 Specifications of the dosimeter Standardized Unit of measurement values according to the range of photon ionizing radiation ambient dose equivalent rate 0 1 2 0 10 Table 3 1 continued Main relative permissible error limit of DER measurement with To ae 0 95 confidence probability H 10 in precise measurement mode 35 2 1 D 2 in search mode m 10 where 10 15 a numeric value of measured DER in uSv h Measurement range of photon ionizing radiation ambient dose 0 001 9999 equivalent Main relative permissible error limit of DE measurement DER from 0 1 to 1 0 10 uSv h with 0 95 95 confidence probability Energy range of detected photon 0 05 3 00 ionizing radiation Energy dependence of the dosimeter readings at photon ionizing radiation DER and DE measurement within the preset energy range not more than Anisotropy of gamma radiation detecting units at 0 66 MeV for remote detecting unit gamma quantum incidence at 30 to 150 angles relative to the main location area of the detectors not more than built in detecting unit not more than Note Anisotropy charts for the remote detecting unit from Cs 9Co 24 Am isotopes are presented in the Appendix E Table 3 1 continued Measurement range of surface beta particles flux density M
43. viding surface beta particles flux density from 1000 to 10000 part cm min Perform five measurements of beta particles flux density from the source Register the received readings in the protocol calculate the average value of beta particles flux density and the main relative error of measurement 12 4 5 3 Place the detecting unit of beta particles above the 6CO source surface providing surface beta particles flux density from 50000 to 100000 part cm min Perform five measurements of beta particles flux density from the source Register the received readings in the protocol calculate the average value of beta particles flux density and the main relative error of measurement 12 4 5 4 Take readings of beta particles flux density for each type of the standard beta source listed in 12 4 5 1 12 4 5 3 to calculate the main relative error of the dosimeter in the mode of precise measurement Register the received reading in the protocol calculate the basic relative error of measurement 27 12 4 5 5 The dosimeter is acknowledged to have passed the verification test if the main relative error of measurement for each level of beta particles flux density does not exceed the value calculated according to the formula jg 25 200 in the search mode and pp 15 2207 in the precise mode where is a numerical 9 value of measured beta particles flux density in part cm min 12 4 6 Test on energy dependence of p
44. while two right blinking digits display the statistical error of measurement in percentage with consideration of the time period since the beginning of the new averaging interval 19 10 9 2 Press the THRESHOLD button and hold it down for more than 2 s The value of two steady digits to the left increases on the LCD with the discreetness of 1 min in the range of 1 to 99 min Its value 15 fixed after the necessary time of averaging and after the TRESHOLD button is released Press the THRESHOLD button once again and hold it down not longer than 2 s to check the new preset value of the averaging time 10 9 3 Repeat as stated in 10 9 2 if new correction of the time of averaging should be done When the THRESHOLD button is held down for 2 s the previous value ofthe time of averaging returns to 1 min and its increase updates 10 10 Recording of measurement results and numbers of the studied objects in the nonvolatile memory Recording of measurement results and numbers of the studied objects in the nonvolatile memory can be done only after the start stop mode of averaging is finished and in the mode of precise measurement 10 10 1 Press shortly the MEMORY button after the start stop mode is finished to record the measurement result and the number of the corresponding object in the nonvolatile memory in the start stop mode The P symbol and three digits that stand for the number of the object of measurement appear on the LCD the
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