ML19256B449
| ML19256B449 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/22/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Johari Moore SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 7907110205 | |
| Download: ML19256B449 (1) | |
Text
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'c UNITED STATES e -
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gg REGION V 4
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o' SUITE 202, WALNUT CREEK PLAZA Yg WALNUT CRE E K, CALIFORNI A 94596 June 22, 1979 Docket No. 50-206 Southern California Edison Company P. O. Box 800 2244 Walnut Grove Avenue Rosemead, California 91770 Attention:
Mr. Jack B. Moore Vice President Gentlemen:
The enclosed IE Circular No. 79-09, is forwarded to you for information.
If 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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R. H. Engelken Director
Enclosure:
IE Circular No. 79-09 cc w/encls:
J. M. Curran, SCE J. T. Head, SCE 835 175 79071102 O3'
UtlITED STATES fiUCLEAR REGULATORY C00ilSSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20S55 June 22, 1979 IE Circular No. 79-09 OCCURRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGMS IN CERTAIrl SELF-CONTAINED BREATHING APPARATUS Description of Circumstances:
The Nuclear Regulatory Comission (NRC) has been informed by mailgran (copy enclosed) from the National Institute of Occupational Safety and Health (flIOSH) 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 diaphragn rupture, have 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 r.o loss of protection) in the Pressure Derrand-f! ode.
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 examination of the described respiratory devices in accordance with the enclosed NIOSH mailgran; or 2.
Incorporate the provisions of the flIOSH mailgran into your current program for inspection of the described devices.
No written resoonse 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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Entire document previousl? entered 1
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If 790 bl9M37 ANO No. of pages:
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