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Radiological Equipment - Advanced. Objectives. For each radiation detection instrument: Perform advanced operating procedures Become familiar with software Identify advanced maintenance procedures Prerequisite training: Radiation awareness Basic operation and maintenance of each instrument.

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Radiological Equipment - Advanced

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Radiological equipment advanced l.jpg

Radiological Equipment - Advanced


Objectives l.jpg

Objectives

  • For each radiation detection instrument:

    • Perform advanced operating procedures

    • Become familiar with software

    • Identify advanced maintenance procedures

  • Prerequisite training:

    • Radiation awareness

    • Basic operation and maintenance of each instrument


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IsoTrak DoseGuard


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Basic Operation Review

  • Prepare for operation

  • Check dose and dose rate

  • Check alarms


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Advanced Operation Overview

  • Recommended procedures not to be done by operator

    • Reset default reading

    • Turn off/on chirp

    • Reset dose reading to zero

    • Check/change dose or rate alarm set points

    • Deactivate dose or rate alarm

    • Test battery during operation

    • Use reader and software


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Function Settings

  • Toggle button to feature, hold to reset

  • Feature options

    • 1x = non-default display (dose rate)

    • 2x = OFF

    • 3x = chirp off/on

    • 4x = reset dose to zero

    • 5x = dose alarm display/reset

    • 6x = rate alarm display/reset

    • 7x = battery test


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Reset Default Reading

  • Normal default is total dose reading

    • Can switch with current dose rate reading

  • Procedure

    • Press button 1x

    • Display shows dose rate (non-default)

    • Hold button until long beep; release

    • Display shows dose rate as new default


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Chirp Feature

  • “Chirp” alerts user of increased dose rate

    • Disabled chirp does not mute alarms

  • Display shows horn if chirp is enabled

  • Procedure to disable/enable

    • Press button 3x

    • Display reads “CHr”

    • Hold button until long beep, release


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Reset Dose to Zero

  • Verify dose is zeroed before use

  • Procedure

    • Press button 4x

    • Display reads “CLr”

    • Hold button until long beep

    • Display shows current dose flashing

      • Will revert to default if no further action

    • While flashing, hold button until long beep

    • Dose resets to zero, returns to default


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Check Dose Alarm Set Point

  • Verify before use

  • Procedure

    • Press button 5x

    • Display reads “dAL”

    • Hold button until long beep, release

    • Display shows dose alarm setting, returns to default


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Reset Dose Alarm Set Point

  • Reset to current guidance

  • Procedure

    • Check alarm: Press button 5x, display “dAL”, hold

    • Display shows dose alarm setting for several sec.

    • During display, toggle button through list of choices

      • Select zero to disable dose alarm

    • Hold button until long beep; release


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Check Dose Rate Alarm Set Point

  • Verify before use

  • Procedure

    • Press button 6x

    • Display reads “drA”

    • Hold button until long beep, release

    • Display shows rate alarm setting, returns to default


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Reset Dose Rate Alarm Set Point

  • Reset to current guidance

  • Procedure

    • Check alarm: Press button 6x, display “drA”, hold

    • Display shows rate alarm setting for several sec.

    • During display, toggle button through list of choices

      • Select zero to disable rate alarm

    • Hold button until long beep; release


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Test Battery During Operation

  • Use for troubleshooting battery

  • Procedure:

    • Press button 7x

    • Display reads “diA”

    • Hold button until long beep; release

    • Alarm sounds for 5 sec.

    • If battery symbol appears after test, replace battery


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Using the Reader

  • Install software to PC

  • Use PC to

    • Prevent user from changing settings via button

    • Customize settings

    • Print data


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Start Window


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Main Window


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Quick Configuration Window


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Print Configuration Data


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Introduction to Maintenance

  • Operator level

    • Perform simple, “common sense” checks without tools

  • Hospital (organization) level

    • Verify failures

    • Perform advanced programming or diagnostics

    • Replace authorized components

  • Factory or supporting maintenance

    • Calibrate, repair, rebuild, replace internal components


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Advanced Maintenance Overview

  • System diagnostics

  • No corrective maintenance

  • Calibration

  • Warranty information


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System Diagnostics

  • No user adjustments possible

    • Note error code and return to factory

  • Error codes:

    • Er1 = calibration error

    • Er2 = fault in nonvolatile RAM

    • Er3 = fault in detector

    • Er4 = fault in RAM


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Calibration

  • Frequency: Recommended annually

    • Based on local protocols

  • Procedure for sending to factory

    • Track due date—no surprises

    • Send instrument to factory

    • Track shipment until returned

  • Cost estimate (2006): $40


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Warranty Information

  • 12 months free of defects in material or workmanship


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Ultra Radiac


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Basic Operation Review

  • Prepare for operation

  • Check dose and dose rate

  • Turn on back light

  • Check stay time

  • Data logging

  • Alarms


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Advanced Operation Overview

  • Recommended procedures not to be done by operator

    • Reset dose to zero

    • Use sleep mode

    • Use source finder mode

    • Check/change alarm indicators

    • Check/change dose or rate alarm set points

    • View data log

    • Clear data log

    • Use cable and software


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Reset Dose to Zero

  • Verify dose is zeroed before use

    • Log data before zeroing

  • Procedure

    • Press Dose key, display shows dose reading

    • If dose not 000, continue

    • Hold Dose + Clear/Test keys until “000” is displayed


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Use Sleep Mode

  • Extends battery life >1000 hours

    • Wakes up every 5 minutes

    • Alarm sounds if preset levels exceeded

  • Set sleep mode

    • When installing batteries

    • Hold Rate + On/Off key

  • Resume normal operation

    • Hold On/Off key


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Use Source Finder Mode

  • Purpose: Use as an alternate survey meter

  • Activate:

    • Hold Rate key until flashing “1”

    • Use as survey meter

    • Audible clicker activated

  • Deactivate: Hold Rate key until flashing “0”


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Check Alarm Set Points

  • Dose rate alarm set points: High and Low

    • Press Alarm + Rate keys

    • Press Rate key to select H or L

    • Press Clear/Test key to see alarm set point (H or L)

    • Vibrator alarm active: display also shows “- - -”

  • Dose alarm set points: High and Low

    • Same procedure using Alarm + Dose keys


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Change Alarm Indicators

  • Enable/disable visual, audio, or vibration

  • Procedure (rate alarm):

    • Check alarm: Rate + Alarm, Rate (H/L), Clear/Test

    • Press Alarm until desired combination appears

    • Wait 10 sec. for return to normal display

  • Dose alarm procedure same, use Dose key


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Change Alarm Set Points

  • Procedure (rate alarm):

    • Check alarm: Rate + Alarm, Rate (H/L), Clear/Test

    • Press Clear/Test again to start

    • Press Rate until desired decimal and units appear, press Clear/Test to select

    • Repeat for each digit

  • Same procedure for dose alarm

    • Use dose key


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View Logged Data

  • View data from instrument

    • Power Off: Hold Rate + On/Off keys 1 sec.

    • Displays current log number

    • Scroll up (Rate) or down (Dose)

      • Number, rate, dose, next number …

    • Return to normal: Power Off and On

  • PC access (advanced operations)

    • Download, view, or clear data log


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Clear Data Log

  • Recommend download to PC first

  • Procedure

    • View data log (power Off, hold Rate + On/Off)

    • Hold Rate + Alarm, press Clear/Test (all 3)

    • Display “0” indicates all data cleared

    • Return to normal: Power Off and On


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Using the PC Software

  • Use the PC to

    • Print and download logged data

    • Change instrument parameters

    • Observe readings in real time


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Initializing Setup

  • Install software to PC

  • Connect cable between PC and meter

  • Start software

    • Set password 12345

    • Main screen appears


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Main Window


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Text File Export

  • File menu on Main Screen

  • Export to text or Excel


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Interrogate Meter


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Advanced Settings


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Manage Templates


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Monitoring Mode


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Advanced Maintenance Overview

  • Troubleshooting

  • System diagnostics

  • No corrective maintenance

  • Calibration

  • Warranty information


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Troubleshooting


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System Diagnostics

  • Test key function during operational test

    • Initiate test: Clear/Test, 888  000, press keys

  • Key codes:

    • Dose = 002

    • Alarm = 010

    • Rate = 001

    • Light = 020

    • Clear/Test = 004

    • On/Off = OFF


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Calibration

  • Frequency: Recommended 1-2 yrs

    • Based on local protocols

  • Procedure for sending to factory

    • Track due date—no surprises

    • Schedule to keep some instruments on hand

    • Call for tracking #

    • Send instrument to factory

    • 2-3 week turnaround

  • Cost estimate (2006): $125

  • FDNY uses local calibration option


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Warranty Information

  • Published in User’s Manual

  • 1 year free of defects from materials or workmanship

  • 90 days software operates as specified


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Radiation Survey Meter


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Controls and Indicators

Calibration switch well open to see adjustments


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Internal Controls

  • Switchboard inside meter shell

    • 16-position function switch

    • Enter button

    • Up and Left buttons

  • RS-232 port


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Basic Operation Review

  • Prepare for operation

  • Use clicker

  • Use gamma probe

  • Change probes

  • Use pancake probe

  • Alarms


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Advanced Operation Overview

  • Scalar function

  • Setting parameters

  • Data port connection


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Scalar Operation

  • Purpose: Record total count over fixed time

  • Operating procedures

    • Set mode switch to Scalar

    • Push handle button to start count

    • “COUNTING” displayed until finished

    • Display shows final count

    • Reset alarm by pressing handle button (restart count) or power Off/On


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Switchboard Settings

  • Procedure (power On)

    • Set Detector toggle switch

    • Open case

    • Set function switch to desired position

    • Press ENTER

    • Display flashes right digit of current setting

    • Press UP to change character value

    • Press LEFT to advance to next character

    • Press ENTER to accept setting

  • Detach switchboard to prevent changes


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Data Port Connection

  • Located on switchboard inside instrument case

  • Optional software for resetting programmable features via PC

    • All can be manually set using switchboard


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Advanced Maintenance Overview

  • Troubleshooting

  • System diagnostics

  • Component replacement

  • Calibration

  • Warranty information


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Failure

1)Does not power up (display blank)

2)Probe does not operate with check source—no change in reading

3)Display reading not correct with probe—background too high

Possible corrective action

Replace battery; check battery polarity; replace instrument

Check probe is connected; change to other probe and recheck; replace probe; replace cord

Hold probe away from check source; move to different location (background too high); return for calibration; replace probe; replace cord

Troubleshooting


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Failure

4)Display reading not correct with probe—background zero or too low

5)Switch function does not operate properly

6)Instrument frequently alarms

Possible corrective action

Set to Ratemeter mode; check probe with check source; return for calibration; replace probe; replace cord

Power Off/On and recheck; continue use if possible; replace instrument if it cannot be used safely

Move to lower radiation area; reset alarm set point higher (advanced procedures)

Troubleshooting (cont.)


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System Diagnostics

  • Settings for main board, switch board, and display board are listed in User’s Manual

  • Under CAL cover are additional setting switches

    • Primarily used during calibration

    • Includes alarm setting for detector overload

    • Keep cover in place to avoid inadvertent adjustment

  • Probe testing procedures in probe manuals


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Component Replacement

  • Not recommended without factory authorized maintenance assistance

  • Instrument repair parts list and wiring diagrams are in User’s Manual

  • Probe internal component replacement procedures and parts lists are in probe manuals


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Calibration

  • Frequency: Annual

    • Includes instrument and both probes

  • Procedure for sending in

    • Track due date—no surprises

    • Schedule to keep some instruments on hand

    • Send complete kit to service provider

    • Track shipment until returned

  • Cost estimate (2006): TBD


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Warranty Information

  • 12 month free of defects

  • Calibrated within specified accuracy on delivery

  • Not covered

    • Replacement of probe components damaged from abuse


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Area Radiation Monitor


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Basic Operation Review

  • Prepare for operation

  • Normal operation

  • Alarms


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Advanced Operation Overview

  • Hardware installation

  • Check/set monitor parameters

  • Using the PC software

  • Portable (non-fixed) operation


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Hardware Installation

  • Wall-mounted units: Mount near door; plug in

    • Place “portable unit” near desired area; run extension cord

  • Run cable to remote: 20 ft. distant

  • Select computer for software installation

    • Have IT personnel install


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Calibration Controls


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Check/Set Monitor Parameters

  • Check: hold button to display data

  • Set parameters

    • Cal Mode switch On to make adjustments

    • Adjust alarm set points

      • Hold High (or Low) Alarm, set with Up/Down

    • Do not change Cal Constant or Dead Time

    • Cal Mode switch Off


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Set Dip Switch Parameters

  • Cal mode (for adjustments) Off or On

  • Latch (High alarm) No or Yes

  • Range (display units) 0.1 or 1

  • Single beep (Low and High alarms) No or Yes


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Equipment Application

  • Fixed site monitor

    • Mounted on wall at fixed location

  • Portable monitor

    • Disconnect and dismount

    • Place near alternate temporary location

    • Plastic bag to protect from weather and decon activity

    • Run extension cord for power, no remote

    • Option to monitor with network


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Using the PC Software

  • Use PC to

    • Set up monitor to interface with PC

    • Monitor real time readings

    • Record alarms and status data


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Initializing Setup

  • Install software to PC

    • Establish IP address

  • Install monitor and remote hardware

    • Connect Ethernet cable

  • Set up each monitor ID # and UDP

  • Start software

    • Main screen appears

    • Finish set up for each monitor in user preferences


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Monitor Setup

  • Check with network administrator

  • Procedure to set ID and UDP on monitor

    • Open cal cover, set Cal Mode switch On

    • Hold Low Alarm + High Alarm, set ID with Up/Down

    • Hold Low Alarm + Cal Const, set UDP with Up/Down

    • Fill in configuration sheet in User’s Guide

    • Set Cal Mode switch Off, close cover


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Main Window


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Complete Monitor Setup

  • Procedure

    • Main window; preferences

    • Preferences window; Online tab

      • Online tab; check channels to become active

    • Preferences window; Channel Designation tab

      • Fill in ID number for each monitor

      • Apply; save

    • Verify that software receives monitor data


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Preferences Window


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Preferences Window (cont.)


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Quick Alert Window


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Status Window


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Map Edit Window


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Graph View Window


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After Operating

  • Applies to temporary use only

    • Power Off when done

    • Verify battery charged

    • Disconnect and store components together if used in mobile site


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Advanced Maintenance Overview

  • Calibration

  • Warranty information


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Calibration

  • Frequency: Annual

  • Procedure for sending in

    • Track due date: No surprises

    • Send complete kit to service provider

    • Track shipment until returned

  • On site calibration available

  • Cost estimate (2006): TBD


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Warranty Information

  • 12 month free of defects

  • Calibrated within specified accuracy on delivery


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Competency Check

  • For each instrument:

    • Prepare for normal operation

    • Operate advanced features

    • Shut down

  • For dosimeters: Explain how software is used

  • For survey meter: Explain how to set parameters

  • For area monitor: Explain network procedures


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Advanced Procedures Summary

  • Basic familiarity with the equipment required

  • Advanced operating procedures

  • Beyond operator maintenance


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