NUCLEONIX SYSTEMS RC 705E User manual

IN S T R U C T IO N
MA N U A L
RAD CHECK METER EXTERNAL ( 1" X 1" )
NUCLEONIX SYSTEMS PRIVATE LIMITED
Plot No: 162 A & B, Phase II, I.D.A. Cherlapally, Hyderabad - 500 051.
Phone: [phone] / 84 / 85, Mobile No: 7331104481 / 82
E-mail: [email protected] Web : www.nucleonix.com
FILE NAME : NSPL/DOC / MAN / RC705E/02
VER_20170705

IMPORTANT NOTE :
1. It is important to read the instruction manual thoroughly before
operating theunit.
2. Nucleonix will in no way be liable for any damages or losses or
consignment rejections either due to improper usage of this
equipment or any other reason.
3. Only Sr. Technicians who are fully trained byNucleonix Systems or
otherwise & have complete understanding of measurements ofRaC
using this meter only need to operate and make measurements on
regular basis.
4. Users are advised to keep updating their measurement methods,
whenever Nucleonix sends updates. They can periodically check
Nucleonix website for new methods & products.
5. Detector cable and data cable are to be connected only when RAD
check meter is in switch OFF condition.
6. Also it is good practice to get the Rad Check Meter calibrated once in a
year.
7. Equipment electronics, has 1 year warranty Scintillation detector probe is
fragile &hasglass ware (PMT). This doesn't have 1 year warranty, only
inspection warranty is offered. Also this detector warranty doesn't cover
physical damage, breakage internal cracks which may develop due to
dropping orshock to the instrument. Users are advisedstrictly to train &
inform their technicians who operate this product about this.
8. Always use protective belt for detector probe to the shoulder, in case of
Rad Check with external detector probe.
9. To open the top cover, for battery replacement or for maintenance
unlatch top cover & gently open the top cover to separate it from the
bottom cover, If not opened gently, one may break wire connection of the
main PCB.

CONTENTS
S.No. Page No.
CHAPTER I
CHAPTER II
CHAPTER III
CHAPTER IV
CHAPTER V
CHAPTER VI
CHAPTER VII
CHAPTER VIII
CHAPTER IX
CHAPTER X
CHAPTER XI
CHAPTER XII
CHAPTER XIII
CHAPTER XIV
CHAPTER XV
13-14
23-31
32 - 35
Description
Introduction & Applications
Introduction to Radioactive Contamination
(RaC) in Steel Industry
Front panel and Side panel controls /
indications / diagrams
Specifications
Operating Instructions
5.1. Instructions on Intelligent keypad commands
5.2. Operating Procedure
5.3 How to makemeasurements
Block diagram & Description
USB TO UART Data Communication &
Report generation software
Instruction Manual for NucSoft data comm. Software
Frequently Asked Questions
(for steel / foundry industry people)
Case studies ofcontaminated samples &
report, summary
Calibration Certificate
Cesium 137 Source Certificate
Cobalt 60 Source Certificate
Equipment Maintenance Services and Warranty clause
CONTACT US FOR AVAILING S ERVICES
01
02
03
04
05 - 12
15
16 - 22
36
37
38
39- 44
45- 48

PERSON CHECKING FOR RADIOACTIVE CONTAMINATION USING RADCHECK METER &
1”X 1”NaI EXTERNAL DETECTOR

CHAPTER- I
INTRODUCTION
Rad Check Meter Type : RC 705E manufactured byNUCLEONIX SYSTEMS isprimarily designed to inspect &
measure Radioactive Contamination (RaC) in steel samples such as billets, rods, rounds, flats, castings, Automotive
/Engineering components etc. Components in different sizes & shapes can beinspected by this meter. This Rad
Check Meter is widely used globally by many steel industries. This is a Portable Hand Held Meter, designed around
integrally coupled 1" x 1" NaI (Tl) Scintillator to a 1"x1.5" PMT, will offer anoptimum performance incounting
Low-Level Gamma contamination.
This unit has Two modes of measurement namely Dose rate mode & count rate mode. In dose rate mode it
measures intwo 'Unit' i.e., nSv/hr and also in mR/hr and in count rate mode it can measure in CPS & also in CPM
modes. Dose rates close to natural background levels can be measuredaccurately.
This Rad Check Meter is anideal choice for the Recycled steel /casting industry &Engineering component industry
& serves as a good quality assurance (QA) tool to check for Radioactive Contamination (RaC).
This unit employs microcontroller based design and has number of unique features. User can store upto 1000
readings atthe press of a button andcan recall back, for visual indication ona dot matrix LCD display. This unit is
provided with a built-in Serial port (optionally) through which thestored data can be down loaded into PC.
Some important features of this unit are:
Microcontroller based design
Compact, elegant and light weight
User can store up to 1000 readings
Detects Gamma and X radiation
Measures dose rate from (0.1-10000µR/hr) (or) (10nSv/hr - 100k nSv/hr)
CPM (0-5000)
Detector: 1" x 1" NaI (Tl) Detector probe assembly is built into the instrument enclosure box.
Count rate mode :CPS (0-50000)
USB to UART serial port (Optional)
Built in audio
Works on 6VDC dry cells
APPLICATIONS
This is a handheld portable instrument used to check for Radioactive contamination (RaC) in both finished products
and raw materials made of stainless steel, castings, iron products, engineering precision components, buckles, metal
rings, zips, ornamental metal rings in leather jackets / textile garments etc. Input raw materials of iron/steel scrap,
including melting scrap, engine block scrap, counter weight scrap etc also can be inspected by this unit.
All steel/Iron/alloy structural products/ fittings/parts/accessories including Road fencing/Road barriers, vehicle
chassis fittings etc can also be inspected for radioactive contamination. Additionally it can be used as a general
purpose.
Page 1 of 49

CHAPTER - II
INTRODUCTION TO RADIOACTIVE CONTAMINATION (RAC) IN STEEL INDUSTRY
Nucleonix Systems has Products, developed for the inspection of radioactive contamination in steel industry to
meet the requirements at different stages of production cycle. These are useful for inspection of inputs such as scrap
metal, semi-finished raw materials & finishedproducts in different forms, such as billets, rods, machined parts, castings,
forgings etc.
Radioactive Contamination (RaC) can be defined as uncontrolled distribution of radioactive material in a given
environment / material. Radioactive contamination in steel / foundry is due to the accidental incorporation of
radioactive material into the scrap metal chain supply system. There are a lot of radioactive sources (industrial and
medical), used for industrial gauging applications and in medical systems in cancer hospitals. When these sources
are disposed illegally (not following the Atomic Energy Regulatory Board guidelines) it is likely that they come into
scrap metal supply chain system, Steel /foundry mills who own smelting furnaces get the scrap metal from this
scrap supply chain system, leading to radioactive contamination of the end products made from the ingots processed
through these smelting furnaces.
Exports of engineering products and other steel construction materials made of steel, iron, alloy and castings, to
countries such as the UK, US and EU are growing from India. Radioactive contamination in steel, iron, alloy, castings
and allied products meant for exports has become a serious issue these days. Lot of radioactive contamination cases
have been reported by steel / foundry industry.
It is now essential for the Indian / Steel and foundry industry to wake up and take corrective steps to address these
issues of Radioactive Contamination (RaC). Incoming scrap metals as well as outgoing finished products are to be
thoroughly inspected for Radioactive Contamination (RaC), before exporting them to foreign countries to avoid
embarrassment, heavy losses and damage to reputation. Developed countries are rejecting even very low-level
radioactive contaminated products from India.
To address these above issues and find solutions to the above problems faced by the steel industry, Nucleonix
Systems with vast design experience in Nuclear Instrumentation, has developed four products to meet the steel
industry’s demand to check / inspect their incoming scrap metal and also their end products for Radioactive
Contamination (RaC) in different situations. Nucleonix Systems has studied some of the export-rejected
contaminated samples as part of this exercise to offer best possible product design for Radioactive Contamination
(RaC) measurement to the steel industry. These four products developed inc lude:
1. Rad Check Meter RC705 I&E
a. With Internal detector
b. With External detector probe
2. Truck / Container Monitoring System for Radioactive Contamination (Type: TR1020)
3. Gamma Ray Spectroscopy System for Radioactive Contamination Measurement by Nuclide Identification & its
quantification. (To measure contamination in Bq/gram)
4. Package Monitoring System (Type :PMS 1009)
Page 2 of 49

CHAPTER - III
FRONT PANEL & SIDE PANEL CONTROLS
3.1 FRONT PANEL CONTROLS AND INDICATIONS
3.1.1. LCD DOTMATRIX DISPLAY
This is a 16 X 2 alpha numeric LCD dot matrix display and responds to all the commands from the
keypad and displays programme parameters like Acquisition modes (BG, CPS, CPM, DOSE RATE,
PRESET TIME), TC, Recall, Save etc.
3.1.2. INTELLIGENT KEYPAD
(a) PROG key button: This key is an important one which facilitates the user to programme the operation of the
instrument for different modes / conditions.
(b) START key button: This is used for starting of acquisition once all the programme parameters have been
set.
(c) STOP key button: This key can be used to stop acquisition.
(d) INC/DEC key button: These keys are used while setting the programme parameters to
increment/decrement a value or to change the option selected to another value available.
(e) STORE key button: This key is used for storing the readings or data values in the following way.
If you want to store the data, then press STOP button to stop acquisition and then press STORE button.
Note: Keypad commands have been explained in detail under chapter V -5.1.
3.1.3. POWER ON KEY BUTTON: This key is used for the unit to put ON/OFF.
If you want to store the data, then press STOP button to stop acquisition and then press STORE button.
Note: Keypad commands have been explained in detail under chapter V -5.1.
.
RC705E (External)
Page 3 of 49

CHAPTER - IV
SPECIFICATIONS
Detector (options) : (a) Nal (Tl) Scintillator, 1"d x1"h coupled to a Photomultiplier
Tube. Detector assembly is inside the survey meter enclosure.
(b) External unit through 1mtr cable
Calibration Accuracy : (a) Better than +/-10% (specified with a Cs-137
Standard source) from 100 mR/hr onwards
(b) with in +/-20% up to 200 mR/hr
Acquisition mode : CPS: 0-50000
CPM: 0-5000
Dose Rate (mode) :
Over Range :
Alarms :
Preset level :
Data Storage :
Display Indication :
Sensitivity :
Serial Port (optional) :
User Interface :
Power :
Dimensions :
0.1-10000 µR/hr
10nSv/hr - 100k nSv/hr
This instrument will show over range above the 10,000 µR/hr
Provision for audio/visual alarms of dose rate exceeds preset level
User selectable in modes
Can store upto 1000 data readings. Stored data can be recalled
back on todisplay.
Dot Matrix LCD display for dose rate / cumdose.
1micro-R/hr or 0.01µSv/hr
Built-in serial port facilitates data downloading into PC. Data
Communication Software with connecting cable can be provided
at extra cost as anadditional option.
Power ON/OFF,START,STOP,PROG, REC, INC, DEC command
buttons for setting of parameters & operation of the instrument.
6volts DC, BPLExcel or DURACELL ULTRA, Size AA, MN1500
LR6 (4X 1.5 Volts), Alkaline cells.
106W x 196L x 105Ht inmm(Approx.)
Weight : 1. External unit (without probe) : 1.5kg
2. External probe (1"x1" NaI) : 2.1kg
3. External unit with probe : 3.6kg
Cable Details : 5 Pin I/O
Note: Detector probe should not be connected when the RAD check
meter is in switch ON condition
Page 4 of 49

CHAPTER‐V
OPERATING INSTRUCTIONS
5.1 INSTRUCTIONS ON INTELLIGENT KEYPAD COMMANDS
OnswitchingtheunitON,thedisplaywillshowupbelowinitializationscreens.
for3Sec.
for3Sec.
Afterthis,unitacquiresBGautomatically
Thisunithasbeenspeciallymodifiedtosuittheneedsofthesteelindustry.itadditionallygeneratesaudio/
visualalarmsincasepresetlevelsare exceeded.
Nowusercanproceedtoacquisitionofsamples/materials.
5.2 Stepwisesequenceforconfigurationanduseofthesurveymeter
i. UpdateBG(backgroundradiationlevel)
ii. ACQmodeselection
SelecteitherCPS,CPM,DOSERATE,PRESETTIME,nSv/hrmodes
iii. Selecttimeconstantfordose ratemodeorselectpresettimeforPRESETTIME
mode
iv. Enable/Disablethealarmlevel
v. Acquireintheselectedmode
vi. Storeacquiredreadingsinthememory(optional)
vii. DownloadstoredreadingstoPCthroughUSB port(optional)
5.2.1 TO UPDATE BACKGROUND
SwitchONtheunit,BGgetsupdatedautomatically.
Ensuretokeepthesurvey meter&probeabout1mtrabovegroundand at least4‐5mtrsawayfromanyscrap&
sources.
ThisscreenappearsafterswitchingONtheunit
Attheendof20seconds,belowscreenappearsindicatingcompletionofacquisitionforbackground
Nowusercanproceedtoacquisitionofsamples/materials.
UPDATING BG
PLEASE WAIT...........
NEWBG =
XXXX.X
RC‐705 B
NUCLEONIX
SYSTEMS
µR/h
Page 5 of 49

5.2.2 TO SELECT ACQ MODE
PressPROGkeytoselectbelowmenuoption
Nowusingorbuttons,selectsuitablemenuoption‐CPS,CPM,DOSERATE,PRESET
TIME
ACQMODE
XXXXXX
UPDATE BG ?
5.2.3 TO UPDATE BACKGROUND
5.2.4 TO SET THE LABLE FOR ACORRESPONDING READING
By using this feature user can give code numbers to different locations when making measurements on
field.
By using orkeys code number can be changed to 00 to 99.
LABEL XX
>CODE NUMBER
Page 6 of 49

5.2.5 Time Constant Selection
Toselecttimeconstantfordoseratemodeafterselecting'DOSERATE'modeinthe'ACQMODE'
menu, press PROGtoselectbelowmenuoption
TIME CONSTANT
LOW TC XX.X SEC
Nowusingorbuttons,selectsuitableTC - LOW(04.0SEC), MED(08.0 SEC) or HIGH(12.0 SEC)
5.2.6 TO SELECT PRESET TIME FOR PRESET TIME MODE
Afterselecting'PRESETTIME'modeintheACQMODEmenu,pressPROGtoselect
belowmenuoption
PRESET
TIME
^
XXXX
Nowusingor buttonsadjustpresetlevel.
>
DOSERATE A
XXXXX R/h
>
Doserate
>
Blink
>
Doserateunits
XXXXX CPS A
XXXXXX
>Blink
CPSmode
>
CPSvalue
>
XXXXXX CPM
A
XXXXXX
Elapsedtime Presettime
Blink
CPMmode
>
CPM value
< >
ETXXXX A
Blink
PresetTime
PTXXXX
XXXXXX >
Counts
Dependingupontheminimumdetectableleveloronoccurrenceofalarmsusermaydecideonaccepting/
rejectingthematerial(scrap/finishedgoods)
Oncetheacquisitionmodeisselectedandotherconfigurationparametersareselected,usermayproceedto
acquisitionmodebypressingSTARTbuttonbelowscreenswillappeardependinguponthemodeselected.
5.2.7 ACQUIRING IN SELECTED MODE
Page 7 of 49

5.2.8 PASSWORD TO RECALIB
Thisisaveryuseful&importantfeature,itallowsonetocalibratetheunittoobtainexpecteddoseratefor
thetypeofthescintillatorused.Thisistobechangedonlyifuserintendstorecalibratetheunit.
Torecalibratepressincrementordecrementkeystogetthefollowingdisplay.
NowonpressingPROGkey,theexistingcalibrationfactorisdisplayedanduser
canchangeitwithincrement or decrement keystogetnewcalibrationfactor
5.2.9 BUZZER
OnpressingPROGkeythefollowingdisplayappears,
ThedefaultbuzzerconditionisOFF.Usercanchangethisbypressingincrement or decrement keys.
5.2.10 RECALL DATA READINGS
Thisisaveryusefulfeaturethathasbeenprovidedinthisunit.Attheendofstoring/savingofaset of
readings,thisfeaturewillenabletheuserstorecallthereadingsontothedisplay,fromtheSl.No.setinthe
"RECALL"mode.ChangingoftheSl.No.issimilartothatexplainedunder"SL.NO."selection.
BypressingPROGkey,displaychangesto,
Time Date
RECALL XX.XX XX/XX XX
XXX XXXXXX m/hr >Lable
>
Units
Sl.No Doserate
PASSWORD TO
RE-CALIB?
90
PASSWORD TO
RE‐CALIB?
XX
CAL.
FACTXX.XX
BUZZEROFF
BUZZERON
<
<
>
>
Page 8 of 49

Nowusingor buttonsenable/disablethealarmlevel
Alarmlevelischosenasafactorofbackgroundradiationlevel.
WhenacquiringinCPSmode,choosealarmlevelintherangeof1.1to1.5ofBGkeepalarmlevelaslowas
possibleatalevelwherethereisnooccurrenceoffalsealarmswhenacquiringfornaturalradiationlevels
(withoutscrap/material)
ForCPMmode,chooseafactorintherangeof1.5to1.3ofBG.SelectcriteriaforalarmlevelissameasthatforCPS
modeofacquisition.
ALARMLEVEL
DISABLED
5.2.11 SET ALARM LEVEL FOR CPS/CPM MODES
Whentheuserintendstousethemetertomakecontaminationmeasurementsinsteelrawmaterial,scrap
orfinishedsteelgoods,alarmlevelcanbesettodetectcontaminationbymeansofaudio/visualalarms
PresetlevelcanbechosenbygoingtobelowmenuoptionbypressingPROGbutton
5.2.12 ERASE MEMORY?
Ifuserwantstoerasethestoredmemorypressstopkey&thenPROGtoget
ERASEparameterthenpressincrement or decrement keyyouwillseeas
ThenagaingoforSTARTtoacquireinselectedmode.
ERASE
MEMORY?OK
Page 9 of 49

5.2.13 TO SET RTC OF THE INSTRUMENT
PressPROGbuttontoselectbelowmenuoption
HeretheRTCisdisplayedinHH:MMdd/mmformatandthetimeisin24hrmode(i.e.
1:00PMwillbe13:00)
NowtosettheRTC,usingincrement or decrement buttonsandsetittoadesiredvalue.
5.2.16 SAVE?
•Afterchangingallprogramparameteryoucansavethose
parameters.
•PressPROGkeyunityougetSAVE?option
•Pressincrement or decrement key
•Youwillobserveondisplayasshownbelow
•ThenpressSTARTkeytostartaquisitioninselectedmode
SAVE? (PRG)
OK
RTC
XX:XX
^
XX/XX
5.2.14 ALARM LEVEL
PressPROGbuttontoselectbelowmenuoption
ALARM
LEVEL : XX:XX* BG
5.2.15 BACKGROUND LEVEL
PressPROGbuttontoselectbelowmenuoption
BG
LEVEL : XXXX.X µR/h/PRT/CPS/CPM
5.2.17 STORING OF ACQUIRED READINGS
TostorelastacquiredreadingsintothememorypressSTOREbuttonwhileacquisitionisgoingONfor
DOSERATE,CPS&CPMmodes
ForPRESETTIMEmodeattheendofcountingforpresettimepressSTOREbutton.
Page 10 of 49

5.3
5.4
OPERATING PROCEDURE (General)
Thisunitispackedanddispatchedinreadytousecondition.Onunpacking,userisadvisedtogothrough
InstructionManualincludinginstructionsunderChapterV(5.1)completely.
NowswitchONtheunitbypressingthepowerON/OFFbutton.
UsercannowoperatetheequipmenttomakemeasurementsinCPS/CPMorDOSERATE(µR/hr &nSv/hr)
modesaspertherequirement.Usercanstoreandrecallthereadingsifrequiredalso.
Optionalfeature(offeredagainstspecificorderonly):
StoredreadingscanbedownloadedintoaPCifrequiredunderthecontrolofdatacommunicationsoftware
whichissuppliedatextracostasanoptionalaccessor
Note : OncethemeterisswitchedonitentersintoBGmeasurementmode&attheendofmeasurement
(typically20sec)itdisplay,
BG=00222nSV/hr(typicalvalueinhyderabad)valuedependsonplace&location.
UnitofBG,indicatedwillbetheunitselectedearlier.HoweverusercanchangetheunitbygoingtoPROG
modeselectingthedesiredunit.
OnceBGisrecorded,userisnowreadytomakemeasurementona'sampleforRaCinspection'.
HOW TO MAKE MEASUREMENTS ON A SAMPLE FOR RaC INSPECTION (STEP BY STEP PROCEDURE)
Thefollowingaretheprerequisitestepsthatwesuggestbeforemakingtheactualmeasurements:
Employaqualifiedsciencegraduatewitharesponsibleandmeticulousattitudetomakethemeasurements.
Training–Understandtheusermanualanddocumentation.
Makingsuretheinstrumentisinworkingconditionandwithincalibrationperiod.
Thefollowingarethestepstofollowinmakingmeasurementstocheckforradioactivecontamination:
Measurethenaturalbackground
Measurethesamplenearthesamespotwherenaturalbackgroundismeasured
Identifywhetheritiscleansampleorsuspectedcontaminationorsurecontaminationcase
Takeappropriateaction
Repeatsteps1to4fornextmeasurement
5.4.1 MEASURING THE NATURAL BACKGROUND RADIATION
Natural Background radiation istheionizingradiationconstantlypresentintheenvironment,emitted
fromavarietyofnaturalandartificialsources.
Itcomesfrom2primarysources–Cosmicradiation(space)andterrestrialsources(soil,rock,vegetation,
air).
Naturalbackgroundvariesfromlocationtolocation.ForEg.itisdifferentinMumbaiandHyderabad.Italso
variesfromonespottoanotherinthesamelocation.Foreg.itwillbedifferentinsideyourofficebuilding
whencomparedtotheoutdoorarea.Thereisalsoasmallvariationevenatthesamespot.
MENU ‐OPTIONS
ACQMODE‐
‐
‐
‐
‐
‐
UPDATEBG ?
LABEL
TIME CONSTANT
UNIT
PASS WORD TO RECALIB?
BUZZER
ALARMS
ERASE MEMORY
SAVE?
‐
CPS/µR/hr/nSv/hr/CPM
‐
‐
‐
YES / NO
YES
-
XX
Low(4 sec), MEDI (8SEC), HIGH(12SEC)
µR/hr/nSv/hr
90
ON / OFF
Disabled / Enabled
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Formeasuringnaturalbackgroundlevels,taketheunittotheareawhereactualsamplemeasurementsare
tobedone.Makesuretherearenosamplescloseby.(atleastafewmetersaway).Holdatleast1meterabove
thegroundleveland1metreawayfromsidewallsobservethenaturalbackground (BG) reading. Make
aboutthreemeasurements&takeaverageofthethreereadings&thatshouldbetreatedasthenaturalB.G.
(Basevalue)
WerecommendthatmeasurementisdoneinnSv/hrwhichisinternationallyacceptedunit.Otherunits
availableintheinstrumentareR/hr,CPSorCPM.
5.4.2 MEASUREMENT ON A SAMPLE
Samplesareavailableindifferentstagesofprocessinglikerawmaterialentry stage,intermediateprocessing
state, finishedproductstage, etc.Todetectcontaminationwithoutmissing, maximum numberof
measurementsthatarepracticallypossible,aretobemadeatvariousstagesofproduction.Theinputstage
mustbegiventheutmostattentionsothatyoudonotwastetime,moneyandeffortinprocessingcontaminated
rawmaterial.
Samplescanbeinvariousshapesandsizes.
Togetauthenticmeasurements,Samplesmustbechosensuchthattheyare:
Sampleweight:Totalweightisnotlessthan2kg
Samplesize:Areaofsamplemustexceedfrontfaceofthedetectorprobeincaseofexternalprobeandfront
faceoftheunitincaseofinternaldetectorprobe.
Ifsamples/componentsaresmallinsize,theymustbebunchedtogethertomeetweight&sizecriteriaas
saidabove.
TomeasureforRaConthesample,press'START'buttontoenterintoD.RATEmodeassuringthatD.RATE
modeisdefaultsetting,andbringthedetectorprobeclosetosampleuntilittouchesandcoverstheprobe
facecompletely.
OnceameasurementiscompletedattheendofTC(=4sectypical)usercan'STORE'thereadingifrequired
&startagainforanothermeasurement.
5.4.3 IDENTIFYING WHETHER SAMPLEIS CLEAN / SUSPECTED CONTAMINATION / SURE CONTAMINATION
CASE
Makesurethatsamplesize&shapecriteriaaremetasgivenabove.
Case ‘a’ – Clean sample
Whenyoutouchthesamplewiththemeter,ifthereadinggoeslowerthanBGbymorethan10%,thenthe
sampleisclean.
Case ‘b’ – Suspected contamination
Whenyoutouchthesamplewiththemeter,ifthereadingslightlyfallsbelowBG,butnotmorethan8%,
thenitisacaseofsuspectedcontamination.Thissamplemustbeexaminedmorecarefullybyrepeatingthe
measurementswithlargermasses.SamplecanbesenttoNucleonixforascertainingthecontamination.
Case ‘c’ – Sure contamination
Whenyoutouchthesamplewiththemeter,ifthereadingremainssameorincreases,thenitisacaseof
surecontamination.
5.4.4 APPROPRIATE ACTION
Incaseofsuspectedcontamination,samplescanbesenttoNucleonixforfurtheranalysisby“GammaRay
Spectroscopy System for Radioactive Contamination Measurement by Nuclide Identification & its
quantification”.AreportwillbegiveninBq/gm.NucleonixSystemsisofferingsampleanalysisservices.
Pleaserefertoourwebsite&clickonRadioactivecontaminationInspectionSystems/ProductsforSteel
Industry”onhomepage(lastpara)&thentochoose‘Sampleanalysisservices”.
Contactonmobile9346645906(CustomerSupportDivision)forfurtherdetailsonthis.
Ifyoufindthatyoursampleiscontaminated,thencontactAERBforfurtherhelp&guidelinesonhowto
disposeit.
Shri.S.PAgarwal(Head),
RadiologicalSafetyDivision,
AtomicEnergyRegulatoryBoard,
NiyamakBhavan,Anushaktinagar,
Mumbai–400094.
Ph:022‐25574287 Fax:022‐25565717, 25562344,25583230 Mobile: 9820864880
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