ML20153B954
| ML20153B954 | |
| Person / Time | |
|---|---|
| Issue date: | 09/17/1998 |
| From: | Steven Baggett, John Lubinski NRC |
| To: | |
| Shared Package | |
| ML20153B911 | List: |
| References | |
| SSD, NUDOCS 9809230298 | |
| Download: ML20153B954 (5) | |
Text
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i REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ:
NR-0622-D-101-E DATE: SEP 171991 PAGE 1 OF 4 DEVICE TYPE:
Tritium Watch Module MODEL:
100/1 MANUFACTURER / DISTRIBUTOR:
Stocker & Yale, Inc.
32 Hampshire Road Salem, NH 03079 SEALED SOURCE MODEL DESIGNATION:
Mb-Microtec Model 400/1 ISOTOPE:
MAXIMUM ACTIVITY:
Hydrogen-3 25 mci (925 MBq) up to 15 sources LEAK TEST FREOUENCY:
Not required PRINCIPAL USE:
(W) Self-Luminous Applications
-CUSTOM DEVICE:
YES X
NO 9909230298 970026 PDR RC SSD PDR i-.,j yve r -
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R 'GISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ:
NR-0622-D-101-E DATE: SEP 171988 PAGE 2 OF 4 i
DEVICE TYPE:
Tritium Watch Module DESCRIPTION:
The Model 100/1 has the overall classification of formerly j
approved Sandy wrist watches (i.e.,
184B, 184B1, 490, 5903, 5904 5905, and P650).
The Model 100/1 analog watches use Mb-Microtec Model 400/1 vials i
for their sealed tritium light sources and may include one source on each hour, one on each hour and minute hand, and one on a bezel.
The watches are manufactured for distribution to the general public as well as the military.
Each watch is of the same basic design and construction and all use the Mb-Microtec sources, Model 400/1.
The design and construction of specific watches within the Model designation may vary, but will be in accordance with the designs of the former models as listed in the Stocker and Yale license to distribute,-including:
- Materials for the case and bottom plate may include one or more of the following: brass, stainless steel, titanium, gold, platinum, injection molded plastic and polymers.
Case
. bottoms may be snap-on, screw-on, or attached by screws.
- Acrylic, sapphire, and mineral glass crystals, secured by a press-fit stainless steel ring.
Removal of the crystal requires a special tool normally available only in watch factories or repair shops.
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REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ:
NR-0622-D-101-E DATE: SEP 171998 PAGE 3 OF 4 DEVICE TYPE:
Tritium Watch Module DESCRIPTION (Cont'd):
- Unless the watch is destroyed or the crystal removed, there is no access to the sources.
Although the case bottom may be removed, the design and construction is such that access to the sources on the hands and dial is not possible without destruction of the watch.
- Watch hands are specially designed to permit attaching a source from below by a non-hardening adhesive.
Sources are attached to the dial by either placing them into
+
milled slots and securing them with a silicone adhesive, or by a source retaining ring that, when bonded to the watch dial, secures the sources in place.
- Watches may contain a rotating bezel, with or without a light source.
Light sources mounted external to the case and crystal (such as in a bezel) will be secured and protected from damage either by a metal housing and crystal or by placing the source in a milled out slot and covering it with a clear silicone adhesive.
DIAGRAM:
See Attachment 1.
i 1
l REGISTRY OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ:
NR-0622-D-101-E DATE: g[p;7lgg PAGE 4 OF 4 j
DEVICE IXEE:
Tritium Watch Module
REFERENCES:
The following supporting documents for Stocker and Yale wrist watch Models 300/1 are hereby incorporated by reference and are made a part of this registry document.
- Stocker & Yale's application dated March 10, 1982, June 9, 1997, August 26, 1997, and February 3, 1998, with enclosures thereto.
- Stocker & Yale's letters dated January 31, 1991, April 23, 1991, June 11, 1991, April 27, 1992, July 9, 1992, June 23, 1995, and November.14, 1995, with enclosures thereto.
- Stocker & Yale's facsimiles dated June 26, 1991, September 21, 1995, September 29, 1995, and February 26, 1996, with enclosures thereto.
ISSUING AGENCY:
l U.S. Nuclear Regulatory Commission
,/
),
- Date:
Reviewer:
/
' ohn W.
Lubinski J
i t
Date:
Concurrence: /
Steven L. Baggett 1
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l REGISTRATION OF RADIOACTIVE SEALED SOURCES AND DEVICES SAFETY EVALUATION OF DEVICE (AMENDED IN ITS ENTIRETY)
HQ:
NR-0622-D-101-E DAIE:
SEP i 71998 ATTACHMENT 1 i
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