ML19256B456
| ML19256B456 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 06/22/1979 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Stewart W FLORIDA POWER CORP. |
| References | |
| NUDOCS 7907110220 | |
| Download: ML19256B456 (1) | |
Text
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/ / C-UNITED ST ATES
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JUN 2 21979 In Reply Refer To:
RII:JPO 50-302 Florida Power Corpore. tion Attn:
W. P. Stewart, Manager Nuclear Operations P. O. Box 14042, Mail Stop C-4
'. St. Petersburg, Florida 33733 Gentlemen:
If there The enclosed Circular 79-09, is forwarded to you for information.
are any questions related to your understanding of the suggested actions,
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please notify the contact listed in the enclosure to the circular.
Sincerely, 1
$ James P. O'Re11 Director
Enclosures:
1.
IE Circular No. 79-09 2.
Listing of IE Circulars Issued in Last. Twelve Months 836 194 i
- 7907110
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JUN 2 2 1979 Florida Power Corporation
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G. P. Beatty, Jr.
Nuclear Plant Superintendent Post Office Box 1228 Crystal River, Florida 32629
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835 195 1
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 June 22, 1979 IE Circular No. 79-09 OCCURRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGMS 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 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 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; 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.
Enclosure:
Mailgram
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