TM-9-2350-311-10
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; OPERATOR’S MANUAL
NOVEMBER 1994
TM-9-2350-311-10 - Page 4 of 775
TM 9-2350-311-10
RADIATION HAZARD
TRITIUM GAS (H
3
)
Rules and Regulations
This item contains radioactive material. Control of this radioactive material is mandated by fed-
eral law. Immediately report any suspected lost or damaged items to your Radiation Protection
Officer. If your Radiation Protection Officer can not be reached contact the TACOM-ACALA
Safety Office.
Copies of the following rules and regulations are maintained at HQ, TACOM ACALA, Rock
Island, IL 61299-7630. Copies may be requested or information obtained by contacting the
ACALA Radiological Protection Officer (RPO), DSN 793-2965/2995/2962, Commercial (309)
782-2965/2995/2962. After duty hours, contact the staff duty officer through the operator at DSN
793-6001, Commercial (309) 782-6001.
1.
10 CFR Part 19 - Notices, Instructions and Report to Workers; Inspections.
2.
10 CFR Part 20 - Standards for Protection Against Radiation.
3.
10 CFR Part 21 - Reporting of Defects and Noncompliance.
4.
NRC license, license conditions, and license application.
Safety Precautions
The radioactive material used in the M1A1 collimator and the M140 alinement device is tritium
gas (H
3
) sealed in pyrex tubes. These sources illuminate the instrumentation for night opera-
tions. Tampering with or removing the source in the field is prohibited by Federal Law. They pose
no significant hazard when intact. However, if an M1A1 collimator or an M140 alinement device
is discovered to be broken, damaged, or defective, the following procedures will be followed:
1.
Evacuate to a safe distance upwind and cordon off immediate area around device.
2.
Immediately notify the installation Radiation Protection Officer (RPO) and the Installation
Safety Officer (SO).
3.
All personnel will stand fast at the safe area until released by the RPO or the SO.
4.
Follow the RPO’s instruction for decontamination so as to avoid excess spread of tritium
contamination.
5.
Personnel exposed to tritium will notify medical personnel.
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