ML20149L349
| ML20149L349 | |
| Person / Time | |
|---|---|
| Issue date: | 09/24/1982 |
| From: | Singer B, Wright E NRC |
| To: | |
| Shared Package | |
| ML20149L338 | List: |
| References | |
| SSD, NUDOCS 9602260201 | |
| Download: ML20149L349 (9) | |
Text
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$T l-i REGISTRY OF.RADI0 ACTIVE SEALED SOURCES AND DEVICES l
SAFETY ~ EVALUATION OF DEVICE l
N0:
NR-575-D-101 DATE:
PAGE 1 0F 4 DEVICE TYPE:
Gaseous Tritium Light Sources (GTLS) in Military Fire Control. Products i
MODEL: M17 Fire Control Quadrant, M18 Fire Control Quadrant l
MANUFACTURER / DISTRIBUTOR:
Ruoff & Sons, Inc.
1030 Rose Avenue Runnemede, NJ 08078 l
MANUFACTURER / DISTRIBUTOR:
Department of the Army t
U.S. Army Armanent Readiness Command (ARRCOM) f Rock Island, IL (License No. 12-00722-06) i i
SEALED SOURCE MODEL DESIGNATION:
U.S. Army Part No. 11730922-2 and 11729510-2 (see Table 1)
'i i
. ISOTOPE:
Hydrogen-3 MAXIMUM ACTIVITY:
1.875 curies Hydrogen-3' 1.950 curies l'
l LEAK TEST FREQUENCY:
Not required
/
PRINCIPAL USE:- (R)' Gas Sources CUSTOM DEVICE:
'X YES N0 CUSTOM USER:
Department of the Army U.S. Army Armament Readiness Command (ARRCOM)
Rock Island, It i
l 9602260201 960223 PDR RC 5
SSD PDR
REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE M: NR-575-D-101 -S DATE:
PAGE 2 0F 4 DEVICE TYPE: GTLS in Military Fire Control Products DESCRIPTION:
Tritium radioluminous lamps (MB Microtec Models T4279-1 and T4280-1 or Brandhurst P1644 and P1643) are encorporated in the M17 and M18 Fire Control l
Quadrants by the U.S. Army M198 Towed Howitzer.
The Tritium lamps are used for night illumination of level vials and mechanical counters in the M17 and M18 devices.
The Tritium gas is encapsulated in borosilicate glass which is coated with a phospher that emits visible light on activation by the radioactive Tritium.
The glass envelop is secured by RTV Silicon adhesive to either an aluminum ai<. or polycarbonate structure which is then mounted to the instrument to be illuminated.
The RTV compound acts as a shock absorber in cushioning the lamp when exposed to the environments of the weapons system.
LABELING:
Fire control devices are labeled in accordance with 10 CFR Part 20 and labels are attached to the device with adhesives or screws, i
DIAGRAM:
Enclosures 1, 2 and 3 illustrate typical designs for the sealed. light sources and their primary containment for assembly in the M17 and M18 fire control quadrants.
i CONDITIONS OF NORMAL ~USE:
i
.The M17 and M18 Fire Control Quadrants are used on the Armys M198 towed Howitzer i.
and are subjected to Harsh field environments both during training exercises
~
and military deployment of the weapon. These instruments are used by gunners to control elevation and bearing 'of the gun system.
Typical M vironments include a wide range of temperatures', vibration, shock and outdoor weathering.
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V REGISTRY;0F RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE l
l l_
M:
NR-575-D-101-S DATE:
SEP 2 41982 PAGE 3 E 4 DEVICE TYPE:
GTLS in Military Fire Control Quadrants PROTOTYPE TESTING:
l These devices have been prototype tested by the U.S. Army using laboratory and field testing under actual operating conditions.
Following extensive field testing of the devices on military Howitzers they were examined i
by the U.S. Army environmental hygiene agency and found to meet requirements.
l EXTERNAL RADIATION LEVELS:
None expected.
The low energy beta emitter is encapsulated in glass and further contained in an aluminum alloy or polycarbonate housing.
l QUALITY ASSURANCE AND CONTROL:
An acceptable quality assurance and control program is described in Ruoff & Sons, Inc.
application dated June 14, 1982.
LIMITATIONS AND/0R OTHER CONSIDERATIONS OF USE:
These devices shall be distributed only to specifically licensed military users.
SAFETY ANALYSIS
SUMMARY
The M17 and'M18 fire control quadrants have been designed and prototype tested by the Department of the Army (see License No. 12-00722-06). These products contain gaseous Tritium activated light sources manufactured by either 4
i Brandhurst Company, Ltd. or MB Microtec.
The products are to be assembled by Ruoff' & Sons, Inc. in accordance with detailed military speci.fications.
l Assembly and testing of the: products and quality assurance and control are in accordance with military specifications. Additionally, light sources used in the fire control products have been tested by the source manufacturer in accordance with ANSI N540.
l Extensive military field testing of the M17 and M18 fire control mechanisms i
have been conducted with the devices installed on Howitzer guns which have fired several thousand rounds. The U.S. Army's environmental hygiene laboratory has performed radiological tests on the products and found them to satisfactorily contain the Tritium gas.
Based on the above considerations and the information and test data contained in the references cited below, we conclude that the M17 and M18 Fire Control i
e Quadrants containing the sealed Tritium light sources specified above are
' acceptable for licensing pu'rposes.
l
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REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE 1
l i
I N,_0 :
NR-575-D-101-S DATE:
SEP 2 41982 PAGE 4 0F 4
)
0 DEVICE TYPE: GTLS in Military Fire Control Quadrants
REFERENCES:
1 l
The following supporting documents are hereby incorporated by reference and j
are made a part of this registry ddcument:
}
Ruoff & Sons, Inc. application dated May 29, 1981 and enclosures thereto (Control No. 11559) l l
Ruoff & Sons, Inc. letter dated August 16, 1982 and enclosures thereto NRC License No. 12-00722-06 issued to Department of Army Rock Island Arsenal ISSUING AGENCY:
U.S. Nuclear Regulatory Commission Date:
Reviewer:
MM4c
[
SEP 2 s 1003
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Date:
Concurrenc :
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Table 1 U.S. Anny P/N MB-Microtec P/N Brandhurst PN Activity Per Source 11730922-2 T4279-1 P 1644 450 millicuries 11729510-2 T4280-1 P 1643 75 millicuries Tritium gas is contained in laser sealed borosilicate glass vial filled j
with 99% pure (less than 1% Tritium oxide) Tritium (H-3).'
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5 LED SOURCE & DEVICE REVIEW TRACXING SHEET
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DATE RECEIVED:
8/23/82 SEND TO TEES? /~7 YES Date Sent Date Returned CONTROL NUMBER:
82-54(a),(b),(c) 2[]" No DESCRIPTION OF INCOMING Date of Incoming 8/16/82 Model Number (s)
FS-8C
==
l To:
J. Wang /NRC SSS-12 Pm:
Kenneth P. Tovay, RSO/Ruoff & Sons Inc.
955B
SUBJECT:
New custom review l
l 9
l REVIEWER:
i TYPE OF REQUEST: O Certificate G Amendment G Custom Review REF LICENSE NO #
l MILESTONES i.
l Date Person-Hours Raquest for Resubmission.....................
Daficiency Letter............................
l l
Daficiency Telephone Call....................
Response to Deficiency.......................
30 Day Abandonment Letter....................
Raquest Denied...............................
Request Withdrawn by Applicant................
Cartificate/ Amendment / Custom Review Completed I
Void / Reason:
TOTAL REVIEWER HOURS:
TYPING:
l l
l l