TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 4 of 828
TM 9–2350–311–20–2
b
Change 2
WARNING
RADIATION HAZARD
TRITIUM GAS (H
3
)
Rules and Regulations
This item contains radioactive material. Control of this radioactive material is mandated by federal
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 Radiolog-
ical 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 fol-
lowed:
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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