Nutrino News and Training Banner
Edition 11, April, 1998
Meter
Keep it clean. Don't store it around corrosives. Turn it off when you are not using it. Check the batteries each time you use it. Check the battery compartment for corrosion. Count a known check source each time you use it. Have it calibrated annually--ORS provides free service. Most meter use "D" cells; Mini instruments may use 9-volt cells.
dial
We recommend this type of survey meter dial for new purchases. It reads out in counts per minute, which is an appropriate unit for contamination monitoring.
cables
Don't pull on the cable connectors. Strain on the cable can cause failure! We recommend "BNC" connectors on new purchases.
Use the pancake GM detector or end-window detector for C-14, P-32, P-33, S-35:
Use the low-energy scintillation detector for I-125:
pancake
pancake
end window
end-window GM
scintillation
scintillation
  • Survey slowly. Cover this much distance in 7 seconds: <------------------------------------------------------------>
  • Keep the detector close to, but not touching, the surface you are monitoring.
  • Do not touch the surface of the detector. You could contaminate it or damage it.
  • Do not use the survey meter to try and find H-3 contamination. You won't see it! Use a wipe test counted in liquid scintillation instead.

Use this NUtrino as a training tool.
Circulate it among the radiation workers in your group and have them sign and date the training form on the back. File it with your authorization and other radiation safety documents for review during regulatory inspections. Discuss it during laboratory meetings. We have back issues, or you can print them off the Web.