Post on 17-Dec-2015
www.irss.com
About IRSS
14705 116 ave Edmonton, AbT5m-3E8www.irss.ca
Industrial Radiography Supplies and Services Inc. (IR), located in Edmonton Alberta, Canada, is in its first years of operations and has become the leading supplier of RT products in Western Canada.
IR’s vision for the future will be to expand into other NDE disciplines and develop an educational center focusing on radiation safety and product training. IR will also become a leader in digital technology working with those companies that are willing to help us develop products that will perform under Western Canada’s unique climate and production techniques.
Analog Vs Digital
Displays
DMC 2000-SOR/R
RDS 30
RadEye G
PEN Dosimeter
Canadian Admiral
Analog Digital
Different models have Different Ranges and are displayed using different scales
Digital models have an easy to read display that goes from 0.1mR to 1000R and can with the push of a button can even display the rate as a double check to a survey meter
Dosimeter Displays
Response Time Comparison
Set Up
Dose Rate = 600mR/hr
Distance to Center of Detector = 11.79”D(inches) = 22.2(mCi/mRhr)ˆ½
Activity of reference SourceCs-137, s/n S1307 on October 27, 2008
= 168.88 mCi
Analog
Actually footage taken at IRSS using a Cs-137(NIST Traceable) source with current activity 168.89mCi
Canadian AdmiralModel CCD-100-10S/N 02085
Display not scaled with proportional increments, makes it hard to read current field strength at a glance
Jumps between 500mR/hr and 700mR/hr
Meter set on high scale If on low, the scale range would have to be changed manually by the user
Digital
Actually footage taken at IRSS using a Cs-137(NIST Traceable) source with current activity 168.89mCi
RDS 30S/N 270700
Scale range is automatic and requires no user intervention
Display easily read
Stable Field Measurement
Direct Response Time Comparision
Actually footage taken at IRSS using a Cs-137(NIST Traceable) source with current activity 168.89mCi
RDS 30S/N 270700
Canadian AdmiralModel CCD-100-10S/N 02085
Note: Canadian Admiral set on Low Scale
Direct Response Time Comparision
Actually footage taken at IRSS using a Cs-137(NIST Traceable) source with current activity 168.89mCi
RDS 30S/N 270700
Canadian AdmiralModel CCD-100-10S/N 02085
Note: Canadian Admiral set on High Scale
Dose Rate Alarm Set-Up Screen- Using Wireless IRDA Connection to Communicate with PC
Dose Alarm Set-Up Screen- Using Wireless IRDA Connection to Communicate with PC
Meter Status Screenshot
History Reading Screenshot
PC Interface Screenshot
SOR/R OverviewGeneral Features• Solid State (silicon diode) detector• Personnel & Area Monitoring capability• Linear response to 1000 R/hr• Energy Range: 50 keV - 6 MeV• Self Testing/Diagnostics (battery, detector)• Internal Memory “Histogram”• Standard Calculator Battery - over 2000 hrs• Multi-Configuration:
- Dose, Rate and Time Alarm/Warning- Satellite or Autonomous operation- Hands-Free communication
SOR/R OverviewGeneral Features• Alarm Thresholds
- Primary Alarm for Dose and Dose Rate- Pre-Alarms (warnings) for Dose and Dose Rate
• Histogram – “Events History” - 700 intervals- 10 sec, 1 min, 10 min, 1 hr, 24 hr- Stamps dose increment, date, time at selected time interval; records alarm or error indication automatically
SOR/R Overview General Features• Optical Detector Check
- Expose diode to light source every 10 minutes- Three consecutive failures, detector fault alarm (def det)
Test-to-failure concept!• Background Radiation check
- 10 uR/hr: one pulse ~ 10 minutes- No counts in pre-determined time: det. Fault
• Battery (voltage)check every 10 minutes
Display Messages – Internal Faults
Defective Detector:Remove from serviceReturn for repair/replacement
Defective History:Start new histogram using Reader – Entry/Exit
Defective Battery:Battery discharged/removed;Change battery, check for short Or defective ground wire
Defective EEPROM:Problem accessing data in Memory; remove battery for72 hrs,reinstall
Defective Calibration:Calibration data integrityproblem; re-calibrate dosimeter
Defective Componentfor Pulse Counting:Remove from service; return For repair/replacement
Defective External Detector/Initialization:External detector calibration value corrupted; Data integrity suspect or corrupted; re-initialize calibration or system parameters. ContactMGPI for help
Drained Battery:Remove battery for 72 hrs; inspect for damage
History
Customizable Alarm/Alarm Warning ThresholdsAudible Alarms and Warnings Have Different Tone
HistoryTime Stamp- Can be set to record down to an interval of every 10 seconds Detailed Graph- allows user to display and calculate dose increments down to an interval of every 10 secondsRecords can be electronically saved or printed
Dose and Dose Rate thresholds Have Different Audible Tones
New Designs to meet user preferences and demands
New Technology can be used in traditional designs
In Development
ALARA and Safety Advantages
Digital Dosimeters display instantaneous, easy to read and accurate dose levels
Digital Survey Meters do not need to be adjusted by the user to change scalesDigital Survey Meters
Digital Dosimeters
Digital Dosimeter History reports can be analyzed, saved electronically, and matched to TLD reports
Customizable audible alarm thresholds
Customizable audible alarm thresholdsHave a scale going up too 1000R, Dose will not run meter off scale
Questions