ML20129H158

Registry of Radioactive Sealed Sources & Devices,Safety Evaluation of Laser Target Designator/Ranger for Model 117 Laser Designator.Certificate:NR-313-D-101-S

ML20129H158
Person / Time
Issue date:	11/09/1988
From:	Steven Baggett, Stephen Bell NRC
To:
Shared Package
ML20129H147	List: ML20129H143 ML20129H154 ML20129H158 ML20129H168 ML20129H195 ML20129H267 ML20129H280 ML20129H287 ML20129H310 ML20129H319 ML20129H427 ML20129H458 ML20129H478
References
SSD, NUDOCS 9610310105
Download: ML20129H158 (8)

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REGISTRY OF RADI0 ACTIVE SEALED SOURCES Al4D DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-313-0-101-S DATE:

NOV C' 1333 PAGE 1 0F 4 DEVICE TYPE:

Laser Target Designator / Ranger i

MODEL:

117 Laser Designator l

MANUFACTURER / DISTRIBUTOR:

Ford Aerospace Corporation i

Aeronutronic Division Ford Road Newport Beach, CA 92658 SEALED SOURCE MODEL DESIGNATION:

Amersham Model # AMM. 1001H IS0 TOPE:

MAXIMUM ACTIVITY:

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Americium-241 9 microcuries LEAK TEST FREQUENCY:

Not required i

PRINCIPAL USE:

(0) lon Generators, Static Eliminators CUSTOM DEVICE:

X YES NO CUST0M USER:

U.S. Department of Defense Principally the U.S. Navy J

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l REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE E

O I333 NO.: NR-313-D-101-5 DATE:

PAGE 2 0F 4 DEVICE TYPE:

Laser Target Designator / Ranger DESCRIPTION:

The Ford Aerospace Corporation Model 117 is used for laser target range and designation. This device is attached to the Ford Aerospace F/A-18 forward looking infrared (FLIR) Pod located on the outer surface of the left engine inlet on the U.S. Navy F/A -18 aircraft.

The device is contained in an environmental controlled cavity (AN/AAS-38A FLIR Pod). The device contains two NRC-approved americium-241 (Am-241) sources (NR-136-5-174-U), for the removal of static charge, at the end of the laser's Q-Switch crystal permitting it to maintain its large characteristic discrimi-nation ratio. The two sources are screwed and secured onto the lid of the Optical Module which is located in the laser transreceiver. The Optical Module is an aircraft standard aluminum alloy box, 8 inches long by 2.5 inches wide by 2.5 inches high, which contains the sources and the optical elements of l

the laser. The minimum thickness of the box is.060 inches.

The sources are pinced 1.5 inches apart and are threaded into the lid of the box. An 0-ring is placed between the box and the lid. The box and lid are sealed with adhesive and(8)threadedfasteners.

This prevent the ingress of moisture and is filled with dry nitrogen.

Once assembled there is no access to the Am-241 sealed sources.

The Am-241 foil disk is bonded to the end of a stainless steel (304) T-shaped housing. A 304 stainless steel wire cloth (16 mesh by.375mm) is placed in front of this housing and is held in place by crimping the outer edges of the housing.

l LABELING:

l Each source will be labeled on the sides of the source with the following:

serial number, isotope, activity, and the trefoil radiation symbol. The Optical Module will be labeled in accordance with 10 CFR 20.203 and is granted a color exemption.

l DIAGRAM:

See Attachnents 1 thru 4.

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REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE NO.: NR-313-D-101-S DATE: NOV 9 1983 PAGE 3 0F 4 DEVICE TYPE:

Laser Target Designator / Ranger CONDITIONS OF NORMAL USE:

l The sealed sources have obtained an ANSI classification of C54545. The device is subjected to a military aircraft environment and is expected to have a service life of 15 years. The extremes of environment for which the device l

1s designed to withstand are as follows:

temperature -52*C to 95'C; vibrations l

50-2000 Hertz; high humidity; salt fog; explosion; sand, dust, and fungus. Due to the sealed construction of both the Optical Module and the FLIR Pod, the l

device should not be affected by atmospheric conditions.

l PROTOTYPE TESTING:

The manufacturer reports that the device itself was not tested but is-built to MIL-specs and placed into the FLIR pod that has been tested to meet military specifications (MIL-STD-8100). The device has been field tested j

in the configuration and with no incident of source failure.

l EXTERNAL RADIATION LEVELS:

i The manufacturer reports that there are no detectable radiation levels above background from the device.

l l

QUALITY ASSURANCE AND CONTROL:

The quality control program for the laser contained in the module is implemented l

by Ferranti International. Ferranti International has supplied an adequate quality assurance and control program that conforms to MIL-Q-9858A and NATO A-QAP-1. A copy of the quality requirements governing the supply of the sources is on file with the Material Licensing Branch.

A Certificate of Conformity ensuring that the device meets the design specifications is supplied with each source and further checked by the USA l

manufacturer. The USA manufacturer evaluates each component of the module l

to conform with MIL-specs.

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REGISTRY OF RADI0 ACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE h0.: NR-313-D-101-S DATE:

N3i 9 W3 PAGE 4 0F 4 l

DEVICE TYPE:

Laser Target Designator / Ranger i

LIMITATIONS AND/0R OTHER CONSIDERATIONS OF USE:

o The devices shall be distributed only to the specific licensee referred to on this document (U.S. Department of Defense).

o Handling, Storage, Use, Transfer, and Disposal: Shall be determined by the licensing authority.

l l

0 Reviewer Note: Service to the inside of the Optical Module must i

also include a sw~ ipe test to determine if there is any removable l

contamination.

o This registration sheet and the information contained with the references shall not be changed without the written consent of the NRC.

SAFETY ANALYSIS

SUMMARY

Based on our review of the information and design of the device, the past history of the sealed source design, we conclude that Model 117 cevice is acceptable for custom licensing purposes.

Furthermore, we conclude that this l

device would be expected to maintain its containment for normal conditions l

of use which might occur during the uses specified in this registration sheet.

REFERENCES:

The following supporting documents for the Model 117 Laser Target Designator are hereby incorporated by reference and are made a part of this registry document:

l l

Application dated September 13, 1988 with enclosures thereto.

Letter dated October 7,1988 with enclosures thereto.

ISSUING AGENCY:

U.S. Nuclear Regulatory Commission Date:

Reviewer:,2 b

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Date:

0 wh Concurrence:

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