ML19248C900
| ML19248C900 | |
| Person / Time | |
|---|---|
| Site: | 07000572 |
| Issue date: | 06/22/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Hardy E MONSANTO RESEARCH CORP. |
| References | |
| NUDOCS 7907050422 | |
| Download: ML19248C900 (1) | |
Text
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JtB 221979
$iiN RC "' FAN 4 Monsanto Research Corporation License No. SNM-567 Dayton Laboratory ATTN:
Dr. Edgar Hardy Director Dayton Laboratory 1515 Nickolas Road Dayton, OH 45407 Gentlemen:
The enclosed IE Circular No. 79-09, is forwarded to you for informa-tion.
If there are any questions related to your und:esi4iding of the suggested acticas, please notify the contact listed in the enclosure to the circular.
Sincerely, James G. Keppler Director
Enclosure:
IE Circular No. 79-09 cc w/encls:
Mr. James Gibson Manager Operations Central Files PDR NSIC RIII RII avis /blk ppler i1 1 q?
6/21/79 2 (u i
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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 DIAPHRAGMS IN CERTAIN SELF-CONTAINED EREATHING APPARATUS Description of Circu= stances:
The Nuclear Regulatory Com=ission (NRC) has been informed by mailgra= (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 respirstory 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 mailgra=.
Enclosure:
1.
Mailgram 2.
List of IE Circulars issued in last twelve months w2
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