ML19248C899
| ML19248C899 | |
| Person / Time | |
|---|---|
| Site: | 07000152 |
| Issue date: | 06/22/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Ziemer P PURDUE UNIV., WEST LAFAYETTE, IN |
| References | |
| NUDOCS 7907050421 | |
| Download: ML19248C899 (1) | |
Text
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NUCLEAR REGULATORY COMMISSION f - k'f! I REGION 111 h"
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g GLEN ELLYN, ILLINOls 60137 JUN 2 21979 Docket No.70-152 Purdue University ATTN:
Dr. Paul L. Ziemer Radiological Control Officer Bionucleonics Department West Lafayette, IN 47907 Gentlemen:
The enclosed IE Circular N;. 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,
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(/ James G. Kep ler Director
Enclosure:
IE Circular No. 79-09 cc w/ encl:
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t U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION III June 22, 1979 IE Circular No. 79-09 OCCURRENCES OF SPLIT OR PUNCTURED REGULATOR DIAPHRAGV.S IN CERTAIN SELF-CONTAINED BREATHING APPARATUS Description of Circumstances:
The Nuc1;4r 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 De=and-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:
1.
Mailgram 2.
List of IE Circulars issued in last twelve conths g m._ m m,, :
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