ML19224C268
| ML19224C268 | |
| Person / Time | |
|---|---|
| Site: | 05000072, University of Utah |
| Issue date: | 06/22/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Turley R UTAH, UNIV. OF, SALT LAKE CITY, UT |
| References | |
| NUDOCS 7907020028 | |
| Download: ML19224C268 (1) | |
Text
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NUCLEAR REGULATORY COMMISSION
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June 22, 1979 In Reply Refer To:
Docket Nos. 50-72 50-407 The University of Utah ATTN:
Dr. Richard E. Turley Reactor Administrator College of Engineering Salt Lake City, Utah 84112 Gentlemen:
If The enclosed lE 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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? -w Karl V. Seyfr Director
Enclosures:
1.
IE Circular No. 79-09 2.
List of IE Circulars Ise.ed in Last 12 Months 267 026/
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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 OCCURRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGMS I$ 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 Occupationel Safety and Health (N10SH) of the high rate of regulator diaphragm failures in the Scott Air Pak II/Ila and Presur-l'ak II/ IIA self-contained breathing apparatus.
The failures, ranging from pin holes in the diaphragm to complete diaphragm rupture, have beeu identified in about 10 percent of the units by the NIMH fie' urvey.
Tests of the Scott apparatus by NIOSH showed reduced respirror.
Ma in the Demand-Mode and a loss of service time (but no loss of pio the Pressure Demand-Mode.
Notice to Licensees:
Many major licensees use the types of Sectt 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.
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