ML19345G204
| ML19345G204 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 03/04/1981 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Mcdonald R ALABAMA POWER CO. |
| References | |
| NUDOCS 8103170056 | |
| Download: ML19345G204 (1) | |
Text
A O
'p uc
/
UNITED STATES
-t E"'
7, NUCLEAR REGULATOPY COMMISSION REGION II
'[
101 MARIETTA ST., N.W.. SulTE 3100 o
j' ATLANTA. GEORGIA 30303 MAR 4 1981 In Reply Refer To:
V Mq i RII:JP0
/t fg/(
/
a -348 1
-364 g'UI' Jog Alabama Power Company 1
ATTN:
R. P. Mcdonald 6; u.s. %
gSl A Vice President-Nuclear Generation q
c"$$ff?rcer q
P. O. Box 2641 g'i
/Q
-Birmingham, AL 35291
/7 9
Gentlemen:
IE Bulletin 81-01 has been revised to change the identification of the power reactor facilities with construction permits to which the bulletin is applicable.
This change does not affect your requirements with respect to the bulletin. As a result, the enclosed revised pages 5 and 6 are forwarded to you for information, Should you have any questions regarding this bulletin revision, please contact this office.
Sincerely,
. ___ __ NO k
M MV James P. O'Reilly Director
Enclosures:
1.
IE Bulletin No. 81-01 with revised pages 5 and 6 2.
List of Recently Issued IE Btiletins
, cc w/ encl:
W. 3. Whitt, Executive Vice President F. L. Clayton, Jr., Senior Vice President H. O._ Thrash, Manager-Nuclear Generation
- 0. D. Kir.gsley, Jr.,- Manager, Nuclear Engineering -
and Technical Services J. W McGowan, Manager-Operations Qality Assurance W. G. Hairston, III, Plant Manager W. C. Petty, Manager-Quality Assurance (Design and Construction)
R. E. Hollands, _Jr.. QA Supervisor'.
81031 70056
1 SSINS No.:
6820 Accessior: No.:
3005050075 IEB 81-01 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 January 27, 1981 IE Bulletin Nc. 81-01:
SURVEILLANCE OF MECHANICAL SNUBBERS Description of Circumstances:
Several instances of failures of mechanical snubbers supplied by International Nuclear :'afeguards Corporation (INC) havt been idertified that indicate possible deficien:ies in these snubbers. A summary c: the failures that have occurred is provided below:
1.
On August 9, 1974, the Tennessee Valley Authority submitted event report BFAO-50-260/741W ide"tifying 11 of 14 INC Model MSVA-1A snubbers that were found inoperable on Browns Ferry Nuclear Power Station Unit 2 and subsequently-identified 5 of 14 inoperable units on Browns Ferry Nuclear Power Unit No 3.
All of these units were found to be frozen, and the cause was attributed to a failure to lubricate the parts during assembly.
The failed snubbers were replaced with new units produced by the same manufacture.
2.
On April 12,1976, the 5i.. Lecie Plant Unit 1 facility of Florida Power and Light Corporation submittec: event report Vo. 50-335-76-9 wherein five INC Model MSVA-1 snubbers were identified as 1 operable because they were found to be frozen. The failures were caused by oxidation on the " stern 31s and by irnproper assembly. All INC mecNnical snubbers were replaced with units produced by another manufacturer.
3.
On Apri' 8,1977, Iowa Electric Light and Fower Company submitted event report No. 77-23 for the Duane Arnold Energy Center facility that identi-fied 13 INC Model IMSVA-1 Type AS snubbers to be frozen; the cause of i
l failure was attributed to large amounts of in'.erior oxidation.
The units were replaced with those produced by another m;nufacturer.
4.
On December 5,1979, personnel frota the Nuclear Regulatory Comcission visited Department of Energy (DOE) facilities at Richland, Washington, to l
obtain information on DOE experience with INC snubbers et the Fast Flux Test Facility (FFTF).
The DOE-owned FFTF was equipped with more than l
4,000 mechanical pipe restraints (snubbers) supplied by INC.
In 1978 FFTF examined more than -
i DUPLICATE DOCUMENT from their installation and (j
were frozen.
'he plant was seen no service and had bee ci Entire document previously l
environments for 1 to 2 yen j
entered into system under:
8005050075 ANO 7
.1
Attachment:
Recently issued IE bullitins No. of pages:
7
..n
-.s
-o MW2Mygg&d