Last Updated: 04/25/2025 1:35 AM
The following table lists all the components that make up the document.
Verify instrument is operating correctly
None
Prior to arrival, notify operators concerning expected work and duration.
Entire document: Changed title, number, added new pictures, refined text on instructions, added neutron response check
247 - 257 - Prepare instrument; Remark:
257 - Prepare instrument
Prepare instrument
3092 - 3091 - Disconnect from external power; Remark:
3091 - Disconnect from external power
Disconnect from external power
786 - 219 - Verify there are no sources of radiation near instrument; Remark:7
219 - Verify there are no sources of radiation near instrument
Verify there are no sources of radiation near instrument
7 - No Radiation symbol

250 - 220 - Power on instrument; Remark:228
220 - Power on instrument
Power on instrument
228 - Press POWER button until the display turns on.
Press POWER button until the display turns on.

3107 - 229 - Press LIGHT button to brighten display (if needed); Remark:3106
229 - Press LIGHT button to brighten display (if needed)
Press LIGHT button to brighten display (if needed)
3106 - Light may provide better visibility for reading the display...
Light may provide better visibility for reading the display in low-light conditions.
252 - 232 - Check instrument gamma response; Remark:
232 - Check instrument gamma response
Check instrument gamma response
333 - 233 - Verify instrument is in SEARCH MODE; Remark:234
233 - Verify instrument is in SEARCH MODE
Verify instrument is in SEARCH MODE
234 - Use S/F button to change between SEARCH MODE and FIND MODE.
Use S/F button to change between SEARCH MODE and FIND MODE.
334 - 235 - Place instrument next to radioactive gamma source; Remark:535
235 - Place instrument next to radioactive gamma source
Place instrument next to radioactive gamma source
335 - 237 - Verify SEARCH MODE responds correctly; Remark:243
237 - Verify SEARCH MODE responds correctly
Verify SEARCH MODE responds correctly
243 - The instrument should respond as follows: Gamma counts per ...
The instrument should respond as follows:
- Gamma counts per second (CPS) changes proportionally with distance to source
- Gamma light is illuminated
- Audible alarm pitch is constant


340 - 241 - Move instrument away from radioactive gamma source; Remark:332
241 - Move instrument away from radioactive gamma source
Move instrument away from radioactive gamma source
342 - 239 - Set instrument to FIND MODE; Remark:234
239 - Set instrument to FIND MODE
Set instrument to FIND MODE
234 - Use S/F button to change between SEARCH MODE and FIND MODE.
Use S/F button to change between SEARCH MODE and FIND MODE.
3109 - Find Mode

336 - 235 - Place instrument next to radioactive gamma source; Remark:536
235 - Place instrument next to radioactive gamma source
Place instrument next to radioactive gamma source
337 - 240 - Verify FIND MODE responds correctly; Remark:245
240 - Verify FIND MODE responds correctly
Verify FIND MODE responds correctly
245 - The instrument should respond as follows: Gamma counts per ...
The instrument should respond as follows:
- Gamma counts per second (CPS) changes proportionally with distance to source
- Gamma light is illuminated
- Audible alarm pitch increases


338 - 241 - Move instrument away from radioactive gamma source; Remark:339
241 - Move instrument away from radioactive gamma source
Move instrument away from radioactive gamma source
3099 - 3093 - Check instrument neutron response (CGN model only); Remark:
3094 - Note : The next step is only applicable to CGN models with neutron detection capability...
3093 - Check instrument neutron response (CGN model only)
Check instrument neutron response (CGN model only)
3100 - 3095 - Place instrument next to radioactive neutron source; Remark:536
3095 - Place instrument next to radioactive neutron source
Place instrument next to radioactive neutron source
3102 - 3097 - Verify instrument responds correctly; Remark:3103
3096 - Note : Most radioactive neutron sources also have a gamma component, which will likely ...
3097 - Verify instrument responds correctly
Verify instrument responds correctly
3103 - The instrument should respond as follows: Neutron CPS chang...
The instrument should respond as follows:
- Neutron CPS changes proportionally with distance to source
- Neutron light is illuminated
- Audible alarm is emitted
3101 - PRM-470 Search Mode Neutron


3104 - 3098 - Move instrument away from radioactive neutron source; Remark:339
3098 - Move instrument away from radioactive neutron source
Move instrument away from radioactive neutron source
253 - 242 - Document and report any unresolved problems; Remark:
242 - Document and report any unresolved problems
Document and report any unresolved problems