ML19224C272
| ML19224C272 | |
| Person / Time | |
|---|---|
| Site: | 05000192 |
| Issue date: | 06/22/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Gloyna E TEXAS, UNIV. OF, AUSTIN, TX |
| References | |
| NUDOCS 7907020033 | |
| Download: ML19224C272 (1) | |
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June 22, 1979 L1 Reply Refer To:
Docke t No. 50-192 The University of Texas ATTN:
Dr. E. F. Gloyna, Dean College of Engineering Austin, Texas 78712 Gentlemen:
If The enclosed IE Circular 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,
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Karl V. Sey Director
Enclosures:
1.
IE Circular No. 79-09 2.
List of IE Circulars Issued in Last 12 Months
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UNITED STATES NUCLEAR REGULATOPY COMMISSION OFFICE OF INSPECTION AhT) ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular No. 79-09 Date:
June 22, 1979 Page 1 of 1 OCCURRENCES OF SPLIT OR PL'CTURED REGULATOR DIAPHEAGMS IN CERTAIN SELF-CONTAINED BREATHING APPARATUS Description of Circumstances:
The Nuclear Regulatory Commission (NRC) has been informed by mailgram (copy enclosed) from the National Institute of Occupational Safety and Health (NIOSH) of the high rate of regulator diaphragm failures in the Scott Air Pak II/ IIA and Presur-Pak II/ IIA self-contained breathing apparatus.
The failures, ranging from pin holes in the diaphragm to complete diaphragm rupture, have been iA ntified in about 10 percent of the units by the N105H field survey.
Tests of the Scott aoparatus by NIOSh showed reduced respiratory protection in the Demand-Mode i a loss of service time (but no loss of protection) in the Pressure Demand.. ode.
hotice 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 examination of the described respiratory devices in accordance with the enclosed NIOSH mailgram; or 2.
Incorporate the provisions of the NIOSH mailgram into your current program for inspection of the described 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:
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