ML19248C919
| ML19248C919 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities, Zion  |
| Issue date: | 06/22/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Brian Lee COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 7907050441 | |
| Download: ML19248C919 (1) | |
Text
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UNITED STATES 61
_ f7 7, NUCLEAR REGULATORY COMMISSION
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REGION 111 g
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GLEN ELLYN, ILLINOIS 60137
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JUN 2 21979 Docket Nos. 50-295, 50-304, 50-10, 50-237, 50-249, 50-254 and 50-265 Commonwc. th mdison Compar: i ATTN:
Mr. Byron T.ee, Jr.
Pice President P. O. Bo:r 76/
Chicar 6LM Gentlemar:
~iir c ;1omed.2 Circular No. 79-09, is forwarded to you for informa-tion.
11 u.cre are. any questions related to your understanding of the sugbested actions, please notify the contact listed in the enclosure to the circular.
Sincerely, h ka James G. Keppl$r Director
Enclosure:
IE Cirtular No. 79-09 cc w/ encl:
Mr. B. B. Stephenson, PDR Station Superintendent Local PDR Mr. N. Kalivianakis, NSIC Station Superintendent TIC Mr. N. Wandke, Station Anthony Roisman, Esq.,
Superintendent Attorney Central Files Mr. Dean Hansell, Office Director, NRR/DPM of Assistant Attorney Director, NRR/ DOR General 7e 1 99 Lu.
LLO 7907050
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 DIAPHRAGE 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 identified in about 10 percent of the units by the NIOSH field survey.
Tests of the Sco+t apparatus by NIOSH showed reduced respiratory protection in the Demand-Mue and a loss of service time (but no loss of protection) in the Pressure Demand-Mode.
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 mailgram; c 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, plesse 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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IDUFLI Entire document previously entered into system under:
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No. of pages:
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