ML19224C263
| ML19224C263 | |
| Person / Time | |
|---|---|
| Site: | 05000112 |
| Issue date: | 06/22/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Jischke M OKLAHOMA, UNIV. OF, NORMAN, OK |
| References | |
| NUDOCS 7907020024 | |
| Download: ML19224C263 (1) | |
Text
PDR:HQ
_ M {t R f "G%
[s h
UNITED STATES ggg NUCLEAR REGULATORY COMMISSION
$,$ s.. ( Y
'n
?
\\ u.t E
REGION IV
?
- M /
611 RYAN PLAZA DRIVE, SUITE 1000 O
+....
June 22, 1979 In Reply Refer To:
Docket No. 50-112 The University of Oklahoma ATIN:
Dr. Martin C. Jischke, Director School of Aerospace, Mechanical and Nuclear Engineering 1000 Asp Avenue Norman, Oklahoma 73069 Gentlemen:
The enclosed IE Circular 79-09, is forwarded to you for information.
If there are any questions related to your understanding of the suggested actions, please notify the contact listed in ti.
enclosure to the circular.
Sincerely, 1
^
0
'M)t.
',, u,
1 W
Rarl V. Seyfrit' Director
Enclosures:
1.
IE Circular No. 79-09 2.
List of IE Circulars Issued in Last 12 Months 267 0061 7907020c q y
((r',
I
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Circular No. 79-09 Date: June 22, 1979 Page 1 of 1 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 mailgrr..a (copy enclosed) fro the National Institute of Occupational Safety and Health (NIOSH) of the high t.te 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 Pressere 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
/
DUPLICATE DOCUMENT
~
\\
Entire document previ into system under:
ously entered
\\
ANO hb No. of pages:
W+
)
\\