ML20149L339
| ML20149L339 | |
| Person / Time | |
|---|---|
| Issue date: | 02/23/1996 |
| From: | Steven Baggett, John Lubinski NRC |
| To: | |
| Shared Package | |
| ML20149L338 | List: |
| References | |
| SSD, NUDOCS 9602260193 | |
| Download: ML20149L339 (8) | |
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4 REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQ2:NR-8054-D-801-S DATE: February 23, 1996 PAGE 1 OF 5 DEVICE TYPR1 GTLS in Military Fire Control Product (Light source)
MODEL:
M17 Fire Control Quadrant, M18 Fire Control Quadrant MANUFACTURER / DISTRIBUTOR:
Ruoff & Sons, Inc.
1030 Rose Avenue Runnemede, NJ 08078 SEALED SOURCE MODEL DESIGNATION:
U.S. Army Part No. 11730922-2 and 11729510-2 (see Table 1 in )
ISOTOPE:
MAXIMUM ACTIVITY:
Hydrogen-3 1.875 curies (69.4 GBq) (M17)
Hydrogen-3 1.950 curies (72.2 GBq) (M18)
LEAK TEST FREOUENCY:
Not required PRINCIPAL USE:
(W) Self-Luminous Applications CUSTOM DEVICE:
X YES NO I
CUSTOM USER:
Department of the Army U.S. Army Armament Readiness Command Rock Island, IL 61299-6000 I
9602260193 960223 PDR RC
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1 REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQ2:NR-8054-D-801-S DATE: February 23, 1996 PAGE 2 OF 5 DEVICE TYPE: GTLS in Military Fire Control Product (Light source) i DESCRIPTION:
Tritium radioluminous lamps (.B Microtec Models T4279-1 and M
T4280-1 or Brandhurst P1644 and P1643) were incorporated in the M17 and M18 Fire Control Quadrants by the U.S. Army for use on the M198 Towed Howitzer.
The tritium lamps were used for night illumination of level vials and mechanical counters in the M17 J
and M18 devices.
The tritium gas was encapsulated in borosilicate glass which was coated with a phosphor that emitted visible light on activation by the tritium.
The glass envelope was secured by RTV Silicon adhesive to either an aluminum alloy or polycarbonate structure which was then mounted to the 2-instrument to be illuminated.
The RTV compound acted as a shock absorber in cushioning the lamp when exposed to the environments
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of the weapons system.
LABELING:
Fire control devices were labeled in accordance with 10 CFR Part 20 and labels were attached to the device with adhesives or screws.
DIAGRAMS:
See Attachments 1, 2,
and 3.
CONDITIONS OF NORMAL USE:
The M17 and M18 Fire Control Quadrants were used on the Army's M198 Towed Howitzer and were subjected to harsh field environments both during training exercises and military deployment of the weapon.
These instruments were used by gunners to control elevation and bearing of the gun system.
Typical environments included a wide range of temperatures, vibration, shock, and outdoor weathering.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQ :NR-8054-D-801-S DATE: February 23, 1996 PAGE 3 OF 5 DEVICE TYPE: GTLS in Military Fire Control Product (Light source) l 1
PROTOTYPE TESTING:
These devices had been prototype tested by the U.S. Army using laboratory and field testing under actual operation conditions.
Following extensive field testing of the devices on military Howitzers, they were examined by the U.S. Army environmental l
hygiene agency and found to meet design requirements.
The manufacturer states that the devices satisfied all operational and safety requirements imposed by the system specifications and the U.S. Army license.
EXTERNAL RADIATION LEVELS:
The manufacturer reports no detectable radiation levels.
The low energy beta emitter was encapsulated in glass and further contained in an aluminum alloy or polycarbonate housing.
OUALITY ASSURANCE AND CONTROL:
The devices are built to contractual specifications.
The manufacturer ensures compliance to design specifications before they are sent to the Army.
The Army will not accept any device that does not meet the contractual requirements.
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
- These. devices shall be distributed only to the specific licensee referenced in this document (U.S. Dept. of Army).
- Handling, storage, use, transfer, and disposal:
To be determined by the licensing authority.
- This registration sheet and the information contained within i
the references shall not be changed without the written consent of the NRC.
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E REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE i
HQt: NR-8054-D-801-S DATE1 February 23, 1996 PAGE 4 OF 5 DEVICE TYPE: GTLS in Military Fire Control Product (Light source)
SAFETY ANALYSIS
SUMMARY
The M17 and M18 fire control quadrants had 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 Brandhurst Company, Ltd. or MB Microtec.
The products were to be assembled by Ruoff & Sons, Inc. in accordance with detailed military specifications.
Assembly and testing of the products and quality assurance and control were in accordance with military specifications.
Additionally, light sources used in the fire control products had been tested by the source manufacturer in accordance with ANSI N540.
1 Extensive military field testing of the M17'and M18 fire control mechanisms had been conducted during prototype testing with the devices installed on Howitzer guns which had fired several thousand rounds.
The U.S. Army's environmental hygiene laboratory had 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, the NRC concluded that the M17 and M18 Fire Control Quadrants containing the sealed Tritium light sources specified above were acceptable for licensing purposes.
REFERENCES:
The following supporting documents are hereby incorporated by reference and are made a part of this registry document.
- Ruoff & Sons, Inc. application dated May 29, 1981, with enclosures thereto.
(Control No. 11559)
- Ruoff & Sons, Inc. letters dated January 8, 1992, and January 31, 1992, and August 16, 1982, with enclosures thereto.
- Department of the Army letters dated January 8, 1992, and January 31, 1992, with enclosures thereto.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE HQ,. :NR-8054-D-801-S DATE: February 23, 1996 PAGE 5 OF 5 DEVICE TYPE: GTLS in Military Fire Control Product (Light source)
ISSUING AGENCY:
U.S. Nuclear Regulatory Commission
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Date:
February 23. 1996
- Reviewer:
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J h 'd. Lubinski j
Date: -February 23, 1996
. Concurrence:
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/ Steven L. 'Baggett l
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE
& :NR-8054-D 801-S DATE:
February 23, 1996 ATTACHMENT 1 1
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 with 99% pure (less than 1% Tritium oxide) Tritium (H-3).
i Note:
These sources are with this device and are not registered separate registration certificate.
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