ML19224C258
| ML19224C258 | |
| Person / Time | |
|---|---|
| Site: | U.S. Geological Survey |
| Issue date: | 06/22/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Marranzino A INTERIOR, DEPT. OF, GEOLOGICAL SURVEY |
| References | |
| NUDOCS 7907020018 | |
| Download: ML19224C258 (1) | |
Text
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UNITED STATES fiSIC j'(. -. c,' j NUCLEAR HEGULATORY COMMISSION 3
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t June 22, 1979 In Reply Refer To:
Docket No. 50-274 US Geological Survey ATTN: Albert P. Marranzino, Administrator Geological Division, MS 911 P. O. Box 25046 Federt.1 Center Denver, Colorado 80225 Gentlemen:
If The enclosed IE Cirealar 79-09, is forwarded to you for Information.
there are any questions related to your understanding of the suggested actions, please notify the contact listed in the enclosure to the circular.
Sincerely, I
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Farl V. Seyfri Director thclosures:
1.
IE Circular No. 79-09 2.
List of IE Circulars Issued in Last 12 Months u'
266 335
- 70200/p,
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular No. 79-09 Date:
June 22, 1979 Page 1 of 1 OCCUPRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGMS IN CERTAIN SELF-CONTAINED BREATHING APPARATUS Description of Circu., stances:
The Nuclear.legulatory Co.nmission (NRC) has been informed by mailgram (copy enclosed) from the National Institute of Occupat.'onal Safety and Health (NIOSH) of the high rate of regulator diaphragn failures in the Scott. Air Pak II/ IIA and Presur-Pak II/ IIA self-contained breathing apparatas.
The fe lures, ranging from pin holes in the diaphragm to complete diaphragm ru;.
re, base been identified in about 10 percent of the units by the NIOSH field survey.
Tests of the Scott apparatus by NIOSH showed reduced respiratory protection in the Demand-Mode and a loss of service time (but no loss of protection) in the Pressure Demand-Mode.
Notice to Licensees:
Many major licensees use the types of Scott apparatus described above. Users of the devices should take the following action:
1.
Establish a program for exami.iation of the described respiratory devices in accordance with the enclosed NIOSH mailgran; or
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2.
Incorporate the provisions of the NIOSH mailgram into your current program for inspection of the describei devices.
No written response to this Circular is required.
If you require additional.
information regarding this subject, please contact the individual specified in the enclosed mailgram.
Enclosure:
Mailgram bb bb
- ammesams DUPLICATE DC,CUMENT Entire document previcusly enterel a
into system under:
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No. of pages: