ML20141J627
| ML20141J627 | |
| Person / Time | |
|---|---|
| Issue date: | 08/18/1997 |
| From: | Steven Baggett, John Lubinski NRC |
| To: | |
| Shared Package | |
| ML20141J624 | List: |
| References | |
| SSD, NUDOCS 9708200218 | |
| Download: ML20141J627 (14) | |
Text
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF A DEVICE NO.: NR-585-D-801-E DATEa, August 18, 1997 PAGEt 1 OF 8 DEVICE TYPEr Illuminated Sight Assembly MODELt RLP Series, RHP Series, FB Series, FP Series, SG Series, RBW Series and FBW Series MANUFACTURER / DISTRIBUTOR: SRB Technologies, Inc.
i 2597 Landmark Drive Winston-Salem, NC 27103 SEALED SOURCE MODEL DESIGNATION.1 SRB Technologies (Canada) Inc.
Betalight type: "MH" Part Numbers 2500G0350150A 2510350G0250A 2520350G0250A ISOTOPEr MAXIMUM ACTIVITYr Hydrogen-3 (Tritium) 30 mci (1.1 GBq)
(Max. 3 sources per gun or bow)
LEAR TEST FREOUENCYr Not required PRINCIPAL USER (R) Gas Source CUSTOM DEVICE: YES X NO 9708200218 970018 PDR RC
- SSD PDR r _;
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES .
SAFETY EVALUATION OF A DEVICE i
NO.! NR-585-D-801-E DATER August 18, 1997 PAGEr 2 OF 8 l DEVICE TYPEt Illuminated Sight Assembly DESCRIPTIONt Model RLP Series, RHP series, FB Series, FP Series, SG Series, RBW Series and FBW Series all contain the model Betalight "MH" light source. The Betalight "MH" is a source consisting of a small cylindrical borosilicate glass vial containing tritium and a fluorescent substance which emits light. These sources are mounted into the metal or plastic gun or bow sights. When they are mounted so as to expose the end of the cylinder, they produce a round " dot" of light. When they are mounted so as to expose part of the side of the cylinder, they produce a short "line" of light. Typically, for gun sights there is a single " dot" source on the front sight. The rear sight may have either two " dot" sources, or two "line" sources located end-to-end.
The glass vials may be surrounded by a thin layer of plastic to cushion it inside the metal gun sight structure. They are held in the sight by a press fit and an adhesive (Loctite-Black Max).
Side areas which are exposed to emit light are sharply convex surfaces which are strong and resist puncture. End areas which are exposed to emit light may have a protective glass sapphire window or sharply convex surfaces which are strong and resist puncture. The devices are designed to withstand the vigorous vibrations from firing the gun on which they are mounted, as well as expected drops from heights as much as 6.5 feet (2 meters) in any direction. All series of sights have a minimum protective wall thickness of 0.016" (0. 4 mm) to the light source.
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF A DEVICE NO..: NR-585-D-801-E DATEt AuguDt 18, 1997 PAGEt 3 OF 8 l DEVICE TYPEf Illuminated Sight Assembly l
DESCRIPTIONt (Cont.)
Different sets of sights are distributed which will fit on several kinds of guns and bows. The sights are designated by the following series and drawing numbers:
RLP, dwg. no. TL-1005, rear sight with low profile RHP, dwg. no. TL-1006, rear sight with high profile FB, dwg. no. TL-1007, front blade sight FP, dwg. no. TL-1008, front post _ sight RBW, dwg. no. TL-1009, rear bow sight FBW, dwg. no. TL-1010, front bow sight SG , dwg. no. TL-1013, for shot guns and long barrels LABELINGr All sights will be permanently stamped or etched with "H3" and the licensee's name, "SRBT".
DIAGRAM:
See attachments 1 through 5.
CONDITIONS OF NORMAL USE:
The illuminated gun sight units are inserted in metal gun sights and attached to the barrels of various kinds of guns and bows.
Gun sights will be subjected to an intense shock each time the gun is fired, and to other shocks when the gun is accidentally dropped during field use.
j REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES I
SAFETY EVALUATION OF A DEVICE NO ! NR-585-D-801-E DATE August 18, 1997 PAGEt 4 OF 8 DEEICE TYPE! Illuminated Sight Assembly PROTOTYPE TESTINGr l
The manufacturer reports that testing for these devices was performed according to the requirements in draft NRC/SSSS
" Standard Requirements for Tritium Illuminated Gun Sights containing Tritium Gas Sealed in Glass Vials." The following tests required by this document were made:
3.2.1 - Chemical 3.2.2 - Temperature k 3.2.3 - Temperature shock 3.2.4 - Vibration 3.2.5 - Pressure 3.2.6 - Penetration 3.2.7 - Mechanical Shock 3.2.8 - Firing 3.2.9 - Evaluation The firing test for the illuminated gun sight assemblies was conducted on an Army M-14 rifle, which was judged to subject them to larger shocks than any other weapon on which they are likely to be used.
The-manufacturer reported there was no apparent damage to the devices or loss of containment or shielding following any of the tests. They passed the-evaluation tests based on an allowable loss of tritium into the rinse water used in the test.
EXTERNAL RADIATION LEVELS:
Since tritium is a soft beta emitter, its radiation is not very penetrating. The sources are contained in glass vials, which are in turn encased in thin plastic. These are in turn surrounded by metal except for one end, or a slim line on one side to allow the-light to be emitted. Hence, it is concluded that any radiation emitted from the gun sight assemblies will be so near background levels as to be undetectable.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF A DEVICE NO.: NR-585-D-801-E DATE: August 18, 1997 PAGE: 5 OF 8 DEVICE TYPEr Illuminated Sight Assembly OUALITY ASSURANCE AND CONTROL:
l The quality assurance program for the assembly of the sights by Saunders-Roe Displays, Inc. has been reviewed, and found to be acceptable to NRC for-producing devices for distribution by SRB Technologies, Inc.
l l
LIMITATIONS AND/OR OTHER CONSIDERATIONS OF USE:
These devices were distributed to any person who is exempt from the requirements for a license in accordance with Section 30.19 of 10 CFR Part 30.
This registration sheet and the information contained within the references shall not be changed without the written consent of the NRC.
SAFETY ANALYSIS
SUMMARY
Based on our review of the information and test data cited below, we conclude that the product is designed and manufactured so that:
- In normal use and disposal of a single exempt unit, it is unlikely that the external radiation dose in any one year, or the dose commitment resulting from the intake of radioactive material in any one year, to a suitable sample of the group of individuals expected to be most highly exposed to radiation or radioactive material from the product will exceed the dose to the appropriate organ as specified in Column I of the following table.
J
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF A DEVICE NQ 1 NR-585-D-801-E DATE: August 18, 1997 PAGEt 6 OF 8 )
l DEVICE TYPEr Illuminated Sight Assembly i SAFETY ANALYSIS
SUMMARY
(Cont.)
In normal handling and storage of the quantities of exempt distribution, installation, and servicing of the product, it is unlikely that t,he external radiation dose in any one year, or the dose commitment resulting f rora the intake of radioactive material in any one year, to a suitable sample l of the group of individuals expected to be most highly exposed to radiation or radioactive material from the product will exceed the dose to the appropriate organ as
! specified in Column II of the following table.
It is unlikely that there will be a significant reduction in the effectiveness of containment, shielding,' or other safety features of the product from wear and abuse likely to occur in normal handling and use of the product during its useful life.
In use and disposal of a single exempt unit, or in hand. ling and storage of the quantities of exempt units likely to accumulate in one location during marketing, distribution, installation, and servicing of the product, the probability is low that the containment, shielding, or other safety features of the product would fail under such circumstances that a person would receive an external radiation dose or dose commitment in excess of the dose to the appropriate organ as specified in Column III of the table below, and the probability is negligible that a person would receive an external radiation dose or dose commitment in excess of the dose to the appropriate organ as specified in Column IV of the table below.
REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF A DEVICE l
NO.: NR-585-D-801-E DATE: August 18, 1997 EbSE.1. 2_01 tl DEVICE TYPE Illuminated Sight Assembly l
SAFETY ANALYSIS
SUMMARY
t (Cont.)
TABLE OF ORGAN DOSES (Rem)
Part of the body col. I col. II col. III col. IV WB, head, trunk, 0.001 0.01 0.5 .15 gonads, eyes Extremities, skin 0.015 0.15 '/ . 5 200
- Other organs 0.003 0.03 1.5 50 SRB Technologies has since formed Trilux Technologies Inc., to manufacturer / distribute these devices. Therefore, this termination registration certificate has been issued. In addition to this action, the NRC has issued a registration certificate to Trilux Technologies Inc.
Based on the information and test data cited in the references listed below, we continue to conclude that these device designs are acceptable for exempt licensing purposes.
Furthermore, we continue to conclude that these devices would be expected to maintain their containment integrity for normal conditions of use and accidental conditions which might occur during uses specified in this certificate.
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF A DEVICE NO.:. NR-385-D-801-E DATE! August 18, 1997 PAGE: 8 OF 8 l DEVICE TYPEr Illuminated Sight Assembly l
REFERENCES; I
The following supporting documents for the series of sights listed on page one of this certificate are hereby incorporated by refert .e, and are made a part of this termination registry document:
- SRB Technologies letters dated July 9, 1997, April 30, 1997, July 24, 1996, July 21, 1995, June 12, 1995, May 22, 1995, and March 1, 1995, with enclosures thereto.
SRB Technologies letter of October 28, 1994, with enclosed application for an Exempt Materials License for gun sights ISSUING AGENCY;
/
U.S. Nuclear Regulatory Commission ?
x Date: August 18. 1997 Reviewer: /'f,, l'. -
W Lubinski Jfh Date: August 18. 1997 Concurrence: /.N-N"
'S'teven L. Baggett
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