FOR NPP PERSONAL GAMMA RADIATION DOSIMETER ДКГ-05Д. Operation manual ФВКМ РЭ

Transcription

1 ОКП SIENTIFIC AND PRODUCTION COMPANY DOZA FOR NPP PERSONAL GAMMA RADIATION DOSIMETER ДКГ-05Д Oeration manual ФВКМ РЭ

2 Table of contents 1 Dosimeter descrition and oeration Purose of the dosimeter Technical secifications Dosimeter comonents Dosimeter design and oeration Marking and sealing Packing Intended use Oerational limits Prearation for oeration Intended use Choice of oeration mode Dosimeter oeration descrition in the comlex with the УС-05С reading device Dosimeter oeration descrition in the comlex with the КЗУ-27 cassette charger Maintenance General Safety measures Verification General Oerations and verification equiment Safety requirements Conditions Procedure Recording of results Routine reair Storage Transortation Decomissioning...14 Annex A. УС-05С Electric circuit scheme...15

3 The resent Oeration Manual contains information on the design, oerational rincile, technical secifications and instructions necessary for the roer alication and safety oeration of the roduct (intended use, maintenance, routine reairs, storage, and transortation), as well as information on decommissioning of the roduct. 1 DOSIMETER DESCRIPTION AND OPERATION 1.1 Purose of the dosimeter The ersonal gamma radiation dosimeter ДКГ-05Д ФВКМ (thereafter, dosimeter) is roduces in accordance with the requirements of ТУ The dosimeter is used both with the УС-05С reader and КЗУ-27 cassette charger and indeendently (for routine, oerational, and accidental monitoring of individual doses) as well as a art of the comuter-aided dosimetry monitoring system at facilities and organizations, when handling ionizing radiation sources, including nuclear-owered vessels. The dosimeter is designed to wear it on the ersonnel clothes. The dosimeter is intended Н 10 and rate of ersonal gamma to measure the ersonal gamma radiation dose equivalent radiation dose equivalent Technical secifications Measured energy range to 3.0 MeV. Н 10 measurement range to 15 Sv Rate of 10 measurement range to 10 Sv/h Relative measurement error no more than: 10 - Rate of.. ± [ / 10 - Н ± [ / 10 Sv/h] %; Н Sv] % Energy deendence of sensitivity...no more than ±30 % Anisotroy of dosimeter sensitivity within 180 solid angle for Cs-137 radiation (0.662 MeV)...no more than ±35 % Oeration mode installation time...no more than 5 min Continuous oeration time...no less than 100 h without accumulator battery re-charge Dosimeter reading instability during 8 h of continuous oeration is no more than 5 % Rate of 10 measurement time is selected automatically deending uon dose rate value: Subrange: Measurement time: - 1 to 7,5 Sv/h s; - 7,5 to 15 Sv/h s; - 15 to 30 Sv/h s; - 30 to 60 Sv/h s; - 60 to 120 Sv/h s; to 240 Sv/h s; - 0,24 to 0,48 msv/h s; - 0,48 to 0,96 msv/h s; - 0,96 to 2 msv/h s; - above 2 msv/h... 1 s Sound and light alarm signals would be switched on: - in case of accumulator battery voltage below 3,52 V; 3

4 - in case of indication limit exceeding above 42,9 Sv for 10 of 10 ФВКМ РЭ Н and 42,9 Sv/h for rate - in case of exceeding the systemic alarm thresholds; - in case of exceeding of a subrange limits Sound alarm arameters: sound signal frequency in the range of to 3000 Hz; sound ressure level: - at 40 cm distance from the ear... no less than 80 db; - at 30 cm distance from the ear... no more than 100 db; into The dosimeter rovides automated recording of Н and rate of its memory at the fixed time eriods. The maximal number of records should not be less than Time eriod of archive records is established as follows: - with 1 second ste for eriods of 1 to 60 seconds; - with 1 minute ste for eriods of 1 minute to 1 hour; - with 1 hour ste for eriods of 1 hour to 18 hours In case of the uncharged (absent) accumulator batteries, the information recorded in the nonvolatile dosimeter memory would be reserved for 5 years at least Electric ower suly is rovided: - for the dosimeter by three accumulator batteries of no less than 280 ma/h caacity each with the total suly voltage of no more than 4.2 V; - for УС-05С, КЗУ-27 by AC single hase mains of V and 2,5 50 2,5 Hz frequency КЗУ-27 rovides full dosimeter battery charge within.no more than 12 hours Electric ower consumed by the dosimeter together with УС-05С and КЗУ-27 is no more than 50 VA The climatic design is TH3 for the dosimeter and TH4.1 for УС-05С and КЗУ-27 on ГОСТ Margins for external climatic factors on ГОСТ for the dosimeter, УС- 05С and КЗУ-27 in oeration are as follows: - working temeratures: for the dosimeter... minus 20 to +50 С for УС-05С and КЗУ to +45 С - maximal relative humidity... u to 98 % at +35 С - atmosheric ressure... 86,6 to 106,7 kpa - concentration of corrosion-active agents corresonds to atmoshere tye III, the outdoors concentration of corrosion-active agents is as follows: Substances Concentration, mg/m 3 Deosition velocity, cm/s Deosition flow, mg/(m 2 day), Chlorides Sulhates Sulfurous gas Nitric oxides For УС-05С and КЗУ-27 the concentration of corrosion-active agents is allowed to be equal to 60 % of the secified values. 4

5 The dosimeter, УС-05С and КЗУ-27 are resistible to imact of sinusoidal vibration of frequency ranges: - 2 to 13,2 Hz with 1 mm shift amlitude, - 13,2 to 80 Hz with 0.7 g acceleration УС-05С and КЗУ-27 are resistible to shocks imact with 5,0 g acceleration and frequency within 40 to 80 times er minute; total number of shocks is no less than The dosimeter is resistible to shocks imact in case of the free falling from the height of no more than 750 mm on wooden floor for: - falling on edges... 6 times; - falling on crossbars... 3 times; - falling on angles... 2 times On seismic stability, the dosimeter, УС-05С and КЗУ-27 corresond to the requirements of РД and НП for seismic imact of u to grade 7 of the MKS- 64 scale at 30 m height above the ground The casing rotection degree on ГОСТ : - for the dosimeter IP65; - for УС-05С IP23; - for КЗУ IP The dosimeter is related to the safety elements of class 4N according to OПБ-88/ On electromagnetic comliance, the dosimeter, УС-05С and КЗУ-27 are related to the normal oeration elements imortant for the safety on grou III; the function quality criterion A on ГОСТ Р The imact of electromagnetic interference does not result in false oeration and restart of the dosimeter, УС-05С, and КЗУ The dosimeter in Н 10 or rate of 10 measurement mode withstands the short time exosure to 20 Sv/h ambient dose equivalent rate for 5 minutes. At that after 10 minutes of exosure the dosimeter kees its main relative error of measurement within the margins secified in The electric shock rotection degree is class III on ГОСТ for the dosimeter and class I on ГОСТ for УС-05С and КЗУ On fire rotection roerties, the dosimeter, УС-05С and КЗУ-27 corresond to ГОСТ with fire incidence robability of less than /year The dosimeter, УС-05С and КЗУ-27 are resistible to decontamination agents: - boric acid (Н 3 ВО 3 ) 16 g, sodium tiosulfate (Na 2 S 2 O 3 5H 2 O) 10 g, distilled water u to 1 L; - trisodiumhoshate or sodium hexametahoshate g/l in water (any synthetic detergents); - 5 % lemon acid solution in ethyl alcohol for the internal surfaces of electronic comonents Mass is no more than for: - the dosimeter including accumulator batteries. 0,1 kg; - УС-05С with 1 m length interface cable ,0 kg; - КЗУ-27 with 1.5 m length interface cable ,2 kg Overall dimensions are no more than for: - dosimeter mm; - УС-05С mm; - КЗУ mm. 5

6 1.3 Dosimeter comonents The dosimeter is a miniature direct reading device with the hermetic casing made of shock-resistant lastic. The inner side of the dosimeter has the cli to fix it on the oerator chest ocket. The dosimeter is used in the comlex with УС-05С reader and КЗУ-27 cassette charger. Overall and connection dimensions of the dosimeter, УС-05С, and КЗУ-27 are given in Annex С. 1.4 Dosimeter design and oeration Two silicon detectors are used for the radiation detection (rough and fine ones). Detectors are switched of in a sequence deending uon the measured radiation dose rate. The ionizing radiation flow is transformed into electric ulses in the detector. Dosimeter oeration is controlled by the microrocessor resonsible for different values, functions including the transformation of electric ulses into rate of Н and self-test functions, functions of data accumulation and storage for rate of Н 10 and 10 measurements, data exchange with PC, accumulator battery charge control etc. measurement result is dislayed in the indicator. General view of the dosimeter is shown by Figure 1.1: Figure 1.1 General view of dosimeter 1) red light diode doubling of sound signals in case of alarm or oeration mode change; 2) combined LCD indicator; 3) sound signal source to rovide sounds in case of oeration mode change, rate of Н 10 and 10 threshold excess and battery discharge; 4) indicator light button; 5) MODE button to switch on/off the ower and to change the following dosimeter 6

7 oerational modes: - rate of 10 measurement; - measurement of single 10 - cumulated 10 Н measurement; ФВКМ РЭ Н accumulated from the time of the last switching on; thresholds for rate of Н and 6) ranges of measured values; 7) list of light and sound signals given at dosimeter oeration (oerator reference); 8) entrance IR window for PC connection via reading device to reset systemic alarm 10 10, to read measurement results and to adjust/ readjust dosimeter oeration; 9) contacts of accumulator battery laced on the lower side of the casing The dosimeter rovides oerational individual monitoring of ersonnel and sound reset thresholds exceeding. and light alarming in case of the rate of Н and Oerational individual monitoring of dose consumtion for ersonnel of nuclear industry enterrises and others concerned with oeration of ower reactor facilities, handling, rocessing, and transortation of roduction containing radioactive materials. The dosimeters may be alied in medicine for radiotheray and diagnostics as well as used by environmental, sanitary, and customs service. ATTENTION! THE DEVICE SIDE WITHOUT CLIP HAS TO BE PLACED TO THE BODY DIRECTION. Н 10 thresholds: reventive and The dosimeter resumes the setting of two levels of accidental resets, which exceeding is dosimeter user distinguished according to the character of Н 10 reset is exceeded, doubled short (100 ms each) the sound signal. If the reventive sound tone signals would occur, whereas the accidental Н 10 reset or rate of 10 threshold are exceeded, tone signals have 250 ms duration each. Alarm signal occurred in case of the exceeding any threshold would be automatically 10 measured current value is below the threshold value of the terminated, if the new rate of alarm reset. This function rovides user to automatically sto the alarm signal, if he/she has left 10 level. It should be reminded, that the radiation field of dangerous (threshold) rate of Н 10 and rate of 10 measurements are always simultaneous and the dislay is automatically re-switched to the mode of indication of the exceeded value. Values of factory settings of sound and light alarming are as follows: Н 10 reventive threshold 15 msv; if measured 10 Н accidental threshold 20 msv; Н value is above 42,9 Sv, the continuous alarm of 6 seconds duration would be switched on to signalize 10 ossible value of 42,9 Sv would be indicated; - reventive rate of 10 - rate of 10 Н indication limit excess; in such case maximal threshold which switches off the alarm is set 1 Sv/h; accidental threshold is 12 Sv/h; 7

8 - if measured rate of 10 ФВКМ РЭ value is above 42.9 Sv/h, the continuous alarm of 6 seconds duration would be switched on to signalize rate of 10 indication limit excess; in such case maximal ossible value of 42.9 Sv/h would be indicated; - when the accumulator battery voltage is below 3,52 V, the blinking battery symbol would be indicated to revent that the dosimeter will be automatically switched off in few hours because of the comlete ower discharge; in such case 2 second sound signal would be given each 15 minutes. In case of 3,3 V battery voltage, the switching off signal will be given and the dosimeter will be automatically switched off with the reservation of accumulated information in the memory. In case of dosimeter oeration under negative outside temerature around minus 20 С, the battery discharge symbol can be also indicated for almost charged battery. In such case the automated switching off will occur after 24 hours of continuous oeration at least. Rate of 10 measurement time is 1 to 255 s. The time of indication renewal is automatically increased for the decreasing dose rate. Each sequential calculation of rate of 10 value is accomanied by sound signal of 60 ms duration. Dosimeter ower suly is rovided by three accumulator batteries of no less than 280 ma/h caacity each with the total suly voltage of less than 4,2 V. Continuous oeration without battery charge is 100 hors for routine oeration of the sound signal: less than 1 sound signal of measurement er minute. Battery charge is rovided by КЗУ-27 charger included in the shiment set. For dosimeter oeration in the dosimetry monitoring system together with PC, the data transmission is arranged via УС-05С. 1.5 Marking and sealing Following marks are laced on the casings of dosimeter comonents: - trade mark or name of the manufacturer; - conditional sign of item: item tye and unit; - sequential number of item according to the manufacturer; - year of roduction; - aroval sign of measuring instrument attern (only for the dosimeter); - ower, voltage/current and electric ower frequency; - rotection degree on ГОСТ The lace and technology of marking and font size agree to requirements secified in design documentation The dosimeter, УС-05С and КЗУ-27 must be sealed according to design documentation. 1.6 Packing Dosimeter acking should be done according to the requirements of category КУ-3 on ГОСТ Inner ackage of the dosimeter, УС-05С and КЗУ-27 should corresond to the requirements of ГОСТ for grou III of ВЗ-10 rotection tye, ВУ-5 ackage variant. Protection term without re-conservation is 3 years Packing should be carried out indoors in the ventilated rooms under the air temerature of +15 to +40 С, relative air humidity of u to 80 % at +20 С, and air concentration of corrosion agents according to tye I on ГОСТ

9 2 INTENDED USE 2.1 Oerational limits The dosimeter kees its oerational abilities under conditions given by Prearation for oeration Dosimeter switching on/off Dosimeter switching on is done by single ush of the button MODE. After switching on, the dosimeter will start self-testing mode, when whole electric circuits of the dosimeter are tested including indicator and detectors. In case of electric circuit failure the message Е-(01, 02, 04, 05) would be indicated and the dosimeter will be automatically switched off. It will also switch off with the sound signal, if the battery ower voltage is below 3,3 V. If the ower voltage is below 3,52 V, the dosimeter will switch on, but the reventive sound of 3 s duration will occur and battery discharge symbol will be indicated. Such signal will be always given, if the voltage is below 3,6 V during the oeration. It should be noted, that if the short time (less than 1 s) ush is done when switching on the dosimeter, indicator and battery test results will be indicated; the longer ush will result to exclusion of these indications to save time for oerational mode start. During dosimeter self-testing, sound and light signals will be given (red light diode glow) as well as all segments and symbols of the indicator to give the oortunity of indicator, sound and light workability visualization. At the end of the self-testing battery voltage is dislayed and the dosimeter enters to oerational measurement mode Dosimeter switching off is done as follows. Under dose indication mode, to ush and kee the button MODE until second sound signal. To release the button after the second sound. OFF reading will be indicated. Within next 5 s the button should be ressed and released. The dosimeter will be switched off with long sound. If the button is not ressed within 5 seconds after OFF indication, the indication will continue to indicate dose. The consumed electric current under switched on state does not exceed the self-discharge current of the accumulator battery. 2.3 Intended use Choice of oerational mode The dosimeter is oerated in any of three measurement modes with direct indication of measurement results: 10 ; - measurement of rate of ersonal gamma radiation dose equivalent - measurement of single ersonal gamma radiation dose equivalent Н 10 automated EPROM recording is carried out for the accumulated dose at secific time intervals; Н measurement of cumulated ersonal gamma radiation dose equivalent ; the Mode selection and other oerations are carried out by the button MODE ush. The command execution is confirmed by the sound. Radiation danger symbol blinking indicated to the measurement in rogress. Under TOTAL DOSE mode, the dose accumulated within the whole oerational time or from the moment of last erasure (if any) will be indicated. To call cumulated dose to the indicator, the button should be ressed until the second sound under dose rate measurement mode. After the sound, the button should be released and the message SUM (value of cumulated dose) will be indicated. Uon 3 s the indicator will be back 10 mode indication. automatically to the rate of 9

10 2.3.2 Dosimeter oeration descrition in the comlex with УС-05С reading device The УС-05С reader is able to transmit data to the information communication channels and rovides the access to the rocessed information via communication lines arranged according to TCP/IP rotocol (Ethernet interface). The descrition of oeration of the reading device УС-05С is in oeration manual ФВКМ РЭ Dosimeter oeration descrition in the comlex with КЗУ-27 cassette charger As already mentioned in 2.2.1, if the ower voltage is below 3,52 V, the reventive sound of 3 s duration, which signal will be reeated each 15 min of the oeration and the battery discharge symbol will be indicated. ATTENTION! IN SUCH CASE, IT IS NECESSARY TO CHARGE THE ACCUMULATOR BATTERY, BECAUSE THE DOSIMETER WILL BE AUTOMATICALLY SWITCHED OFF IN SEVERAL HOURS OF OPERATION, WHEN THE VOLTAGE WILL DECREASE TO 3,3 V The switching on the device will be only ossible after the battery charge. The accumulator battery charging is rovided by КЗУ-27 charger. КЗУ-27 is able to charge 27 dosimeters simultaneously. КЗУ-27 is the steel made casing fixed on the wall and it contains 220 V AC ower suly and 27 contact sets connected in arallel to the ower suly outut. To charge the battery, КЗУ-27 has to be connected to 220 V mains and the dosimeter has to be fixed in КЗУ- 27 contact set. Dosimeter indicator will show the battery voltage and red light diode will oerate Charging rocess is arranged as follows. Immediately after 5 V alication to the charging contact set laced in the dosimeter casing, the rocessor will sto the measurement and connect the load resistor to the battery oles, where 100 ma current will be alied for 3 s. Uon 3 s under the load, the battery voltage is measured. If the measured voltage is above 3,52 V, the forced discharge will be stoed and time-unlimited will be at most 15 ma current charging will be started. In such case, the battery is considered to be normally charged and the dosimeter can be oerated at any time. If the measured voltage is below or equal to 3,52 V, the forced discharge will be continued until the voltage decrease to 3.3 V. thereafter, the normal charging by 90 to 100 ma will be initiated for 12 hours. Three variants of charging light indication are resent: - In case of forced discharge the light diode blinks with 2 Hz frequency, - Under normal charging by 90 to 100 ma the light diode blinks with 1 Hz frequency, - Under ermanent charging by 15 ma (storage mode) the light diode is ermanently illuminated. 3 MAINTENANCE 3.1 General Dosimeter maintenance imlies eriodical visual examination for the urose of absence of damages and check of oerability according to 2.2. No additional requirements to ersonnel qualification and worklaces are needed Basic arameters are checked according to the rocedure in section Safety measures The resent oeration manual should be learnt before dosimeter oeration When oerating the dosimeter, Basic Sanitary Rules of Radiation Safety СП (ОСПОРБ-99) and Radiation Safety Standards СП (НРБ-99) should be ket. 10

11 4 VERIFICATION 4.1 General 4.1 Dosimeter verification is erformed by the State metrology service or other authorized organizations certified for the right of metrological testing. Requirements to verification organization, rocedure and result recording are established by Measuring Instrument Verification. Organization and rocedures ПР All new manufactured and reaired dosimeters as well as dosimeters in oeration are subjected to verification. Initial calibration should be erformed after roduction and reair of dosimeters. Periodical verification is carried out for dosimeters in oeration once in a year. 4.2 Oerations and verification equiment Oerations and equiment shown in Table 4.1 should be used while verification tests. Table 4.1 Oerations and equiment for verification Oeration No. of item Verification equiment and their reference technical secifications Primary calibration Obligatory for Periodical verification 1. Visual examination Visually Yes Yes 2. Test Yes Yes 3. Assessment of Н Verification installation УПГД- Yes Yes 1М or similar with and Cs sources, which rovides measurement relative exosure to 10 within: error 0,1 to msv/h with the error of no more than 5 %. Chronometer С1-2a TУ Phantom: - cube cm, tissue equivalent substance 4. Results recording 4.6 Yes Yes Note It is ermitted to use verification means and equiment newly elaborated or in oeration, which are similar or better than these shown in the resent verification technique. 4.3 Safety requirements When conducting verification, safety requirements of 3.2 and given in documentation on alied verification means and equiment are obligatory. 4.4 Conditions Verification should be carried out under the following conditions: - Ambient air temerature ±5 С; - Relative air humidity... from 30 to 80 %; - Atmosheric ressure... from 86 to 106,7 kpa; - Natural radiation background... no more than 0,2 Sv/h. 4.5 Procedure Visual examination Visual examination one should check: 11

12 - corresondence of the dosimeter set; - oerational documentation resence; - absence of defects affecting on dosimeter oeration; - resence of revious verification marks Testing Dosimeter testing is done according to oerations Assessment of relative Н 10 (rate of 10 measurement error ФВКМ РЭ For verification to be erformed, the УДГП-1М tye installation or similar device which is certified for 10 rate of gamma radiation within the error of 5 % in the ranges of 0,1 to 100 msv/h and 100 to 3000 msv/h with 137 Cs sources should be used. Notes 1 To rotect the oerator caring out verification against the overexosure, information is read using remote video camera or other otical device (for examle, binoculars) to exclude the oerator exosure to radiation field of the source. Н 10, it is warranted by ositive results of 2 Verification test is not erformed in the whole range of verification test in two oints and rate of 10 in the whole measurement range Place the hantom on the verification installation so that the hantom lane is erendicular to radiation incidence. When measuring, the dosimeter should be closely laced on the hantom side faced to the radiation source. The dosimeter cli should be faced to the radiation source and the detector center (its rojection is marked in the casing see Annex А) should be on the line which connects the radiation source with the hantom surface center measurements according 2.2 and Perform rate of Н and Relative error assessment under rate of 10 done for rate of 10 values of 0.1, 50, 500, 3000 msv/h Relative error assessment under At least, five rate of 10 conditionally true value of rate of Н, according to and 10 measurement mode should be Н measurement mode should be done for values of 0,4-0,5 msv/h and 1-1,2 Sv/h. Exosure time should not be less than 200 s. true value of dose, should be calculated. Н оi measurements should be done, Н i for each оi Н for conditionally, according to and average values of measured arameters Minimal and maximal measured values of rate of Н 10 and 10 should be determined Calculate relative differences (%) by following formulae: 100 [ min ]/ (10 (4.1) oi i ) oi 100 [ max (4.2) oi i ]/ oi oj j ]/ oj oj j ]/ oj 100 [ min (4.3) 100 [ max (4.4) Verification test results are ositive, if no one value of errors in absolute magnitude does exceeded the value given in

13 4.6 Recording of results Positive verification test results are recorded according to ПР In case of negative verification test results, the notification on dosimeter inadequacy is issued or the corresonding record is made in technical documentation, the alication of the dosimeter is not ermitted. 5 ROUTINE REPAIR 5.1 Possible failures of the dosimeter and their troubleshooting are shown by Table 5.1. Table 5.1- Possible failures of the dosimeter and their troubleshooting Failure Possible cause Troubleshooting The indicator is not activated when the dosimeter is switched on Arbitrary signs are indicated when the dosimeter is switching on and than switches off dosimeter ower suly Charging is absent or instable Accumulator battery discharged Accumulator battery failure Bad contact between contact sets of the dosimeter and charger To charge battery To relace battery To recover the contact 5.2 The routine reair of УС-05С and КЗУ-27 consists in the recovery of damaged cables and connectors. Inner arts of the dosimeter are not reairable and subjected to the relacement in case of their failure. 6 STORAGE 6.1 Before the oeration commissioning, the dosimeter, УС-05С and КЗУ-27 should be ket in the heated and ventilated warehouse as follows: - in the manufacturer ackage under the storage condition 1 (L) on ГОСТ at the ambient air temerature of +5 to +40 С and relative air humidity of u to 80 % at +25 С; - without the manufacturer ackage under the ambient air temerature of +10 to +35 С and relative air humidity of 80 % at +25 С, atmoshere tye I on ГОСТ Storage time is 3 years. 6.3 The storage room should be free of dust, acid and alkaline vaors, aggressive gases and other corrosion inducing admixtures. The lace of storage should exclude direct sunlight incident on the dosimeter, УС-05С and КЗУ

14 7 TRANSPORTATION 7.1 The manufacturer acked dosimeter, УС-05С and КЗУ-27 can be transorted by any carrier and to any distances: - rail road transortation must be done in covered and clean carriages; - when transorting by oen air motor transortation, boxes must be covered u with waterroof material; - when transorting by air carrier, boxes must be laced in hermetic heated section; - when transorting by sea/water carrier, boxes must be laced inside hold. 7.2 Placement and fixing of boxes during transortation must rovide stable osition and absence of shocks. 7.3 When loading/unloading, requirements given on transortation casings should be ket. 7.4 Transortation conditions: Margins for external climatic factors for the dosimeter, УС-05С and КЗУ-27 in non-working state (transortation) are as follows: - temerature from minus 50 to +50 С; - relative humidity u to 98 % at +35 С The dosimeter, УС-05С and КЗУ-27 in transortation ackage are resistible to imact of sinusoidal vibration of the frequency range of 10 to 500 Hz with 0,35 mm shift amlitude below the crossover frequency, 5,0 g above the crossover frequency (grou F3 on ГОСТ ). 8 DECOMISSIONING 8.1 Uon exiration of the entire lifetime of the dosimeter, УС-05С and КЗУ-27, rior to its reair or verification, it is necessary to examine the radioactive contamination of surfaces. The criteria for making a decision about decontamination and further alication are rovided by 3.11 of ОСПОРБ Decontamination should be done alying solutions of surface-active substances, if the radioactive contamination level of dosimeter, УС-05С and КЗУ-27 surfaces (including available for reair) can be decreased below allowed values (table 8.9 of НРБ-99, table , of ОСПОРБ-99). 8.3 In accordance with os. 3.7 of СПОРО-2002 the absorbed dose rate near surfaces (0.1 m) is allowed to use as a criterion for further oeration of the dosimeter, УС-05С and КЗУ- 27 contaminated by unknown gamma-emitting radionuclides. 8.4 In the event that the dose rate is exceeded the background by mgr/h (1 µsv/h) after decontamination or the allowed levels of surface radioactive contamination is exceeded, the dosimeter, УС-05С and КЗУ-27 are considered to be the radioactive waste. The radioactive waste is classified in accordance with 3 of СПОРО-2002 and handled (utilized) in accordance with 3.12 of СПОРО The dosimeter, УС-05С and КЗУ-27 allowed to oerate after decontamination are subjected to reair, if they are failed. The dosimeter, УС-05С and КЗУ-27 unsuitable for further oeration, which level of radioactive contamination does not exceed the allowed value, should be assed to secial laces of industrial waste disosal. The dosimeter, УС-05С and КЗУ-27 of exired oeration eriod, which were admitted to oerate after decontamination, are subjected to working state examination. If satisfactory working state, the eriod of further oeration is established. 14

15 Annex А (obligatory) OVERALL AND CONNECTION DIMENSIONS 1. Points note the rojection of the detector center Figure А.1 - ДКГ-05Д dosimeter 15

16 Figure А.2 Reading device УС-05С 16

17 КЗУ-27 Dosimeter ДКГ-05Д 27 cs. Figure А.3 Cassette charger КЗУ-27 17