ML19246C307
| ML19246C307 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 06/23/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Andognini G BOSTON EDISON CO. |
| References | |
| NUDOCS 7907240128 | |
| Download: ML19246C307 (1) | |
Text
f" "'G%,,o gg UNITED STATES W+, '(
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NUCLEAR REGULATORY COMMISSION r,..
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631 PARK AVENUE
' N' KING OF PRUSSI A, PENNSYLVANIA 19406 Docket No. 50-293 J'
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Boston Edison Company M/C Nuclear ATTN:
Mr. G. Carl Andognini, Manager Nuclear Operations Department 800 Boylston Street Boston, Massachusetts 02199 Gentlemen:
The enclosed Circular 79-09, is forwarded to you for information.
If there are any questions related to your understanding of the suanested actions, please notify the contact listed in the attachment to the circular.
Sincerely,
_ Boyce H. Grier Director
Enclosures:
1.
IE Circular No. 79-09 2.
List of IE Circulars Issued in 1979 cc w/encls:
P. J. McGuire, Pilgrim Station Manager A. Z. Roisman, Natural Resources Defense Council q
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ENCLOSURE 1 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASdINGTON, D. C. 20555 IE Circular No. 79-09 Date:
June 22, 1979 Page 1 of 1 OCCURRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGMS IN CERTAIN SELF-CONTAINED BREATHING APPARATUC 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 hcles in the diaphragm to complete ( %hragm rupture, have been identified in about 10 percent of the units t,,.ae 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 licenscas 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 attached NIOSH mailgram; or 2.
Incorporate the provisions of the NIOSH mailgram into your current program for inspection of the described devicer.
No written response to this Circular is required.
If you require additional information regarding this subject, please contact the individual specified in the attached mailgram.
363,Sua
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