ML19248C935
| ML19248C935 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/22/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Jeffery Grant TOLEDO EDISON CO. |
| References | |
| NUDOCS 7907050454 | |
| Download: ML19248C935 (1) | |
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JUN 2 21979 Docket No. 50-346 Toledo Edison Company ATTN:
Mr. James S. Grant Vice President - Energy Supply Edison Plaza 300 Madison Avenue Toledo, OH 43652 Gentlemen:
The enc 1csed IE Circular No. 79-09, is forwarded to you for informa-tion.
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, James G. & A m KeppIer Director
Enclosure:
IE Circular No. 79-09
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cc w/ encl:
Mr. T. D. Murray, Station Local PDR Superintendent NSIC Central Files TIC Director, NRR/DPM Harold W. Kohn, Power Director, NRR/ DOR Siting Commission PDR Helen 11. Evans, State of Ohio or-e2 O l IDO 7007050
U.S. NUCLEAR REGULATORY COMMISSION 0FFICE OF INSPECTION AND ENFORCEMENT REGION III June 22, 1979 IE Circular No. 79-09 OCCURRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGMS IN CERTAIN SELF-CONTAINED BREATHING APrARATUS 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 Pre:.sr-Pak II/ IIA self-contained breathing apparatus. The failures, ranging from pin holes in the diaphragm to complete diaphragm 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 no loss of protection) in the Pressure Demand-Mode.
Notice to Licensees:
Many major licensees ur e the types of Scott apearatus c'-
- r.'M above. Users of the devices should t3ke 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 wrftten response to this Circular is required.
If you require additional information regarding this subject, please contact the individual specified in the enclosed mailgram.
Enclosure:
1.
Mailgram 2.
List of IE Circulars issued in last twelve months
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DUPLICATE DOCUMENT Entire document previously entered into system under:
90 GMMM ANO 28'i 257 No. or ge;es:
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