ML20033A903
Text
_.
f/d/RI Gentlemen:
The enclosed IE Circular 81-13, " Torque Switch Electrical Bypass Circuit For Safeguard Service Valve Motors", is forwarded to you for appropriate action /
information.
No written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely, 1 Alt.3g Ronald C. Haynes Director
Enclosure:
IE Circular No. 81-13 with 1 Attacbent CONTACT:
S. D. Ebneter (215) 337-5283 6h'CI eti13OOim a10925 PDR ADOCK 05000 G
LIST OF HOLDERS OF NUCLEAR POWER REACTOR OPERATING i
LICENSES AND CONSTRUCTION PERMITS RECEIVING IE CIRCULAR N0. 81-13 Baltimore Gas and Electric Company Docket Nos. 50-317 ATTN: Mr. A. E. Lundvall, Jr.
50-318 Vice President, Supply P. O. Box 1475 Baltimore, Maryland 21203 Boston Edison Company M/C Nuclear Docket No. 50-293 ATTN: Mr. A. V. Morist i
Nuclear Operations Support Manager 800 Boylston Street Boston, Massachusetts 02199 Connecticut Yankee Aton;ic Power Company Docket No. 50-213 ATTN: Mr. W. G. Counsil Vice President - Nuclear Engineering and Operations P. O. Box 270 Hartford, Connecticut 06101 Consolidated Edison Company of Docket Nos. 50-03 /
New York, Inc.
50-247 ATTN: Mr. John D. O'Toole Vice President - Nuclear Engineering and Quality Assurance 4 Irving Place New York, New York 10003 Duquesne Light Company Docket No. 50-334 ATTN: Mr. J. J. Carey Vice President Nuclear Division P. O. Box 4 Shippingport, Pennsylvania 15077 Jersey Central Power and Light Company Docket No. 50-219 ATTN: Mr. Philip R. Clark Vice President - Nuclear GPU Nuclear 100 Interpace Parkway Parsippany, New Jersey 07054 I
l 2
Maine Yankee Atomic Power Company Docket No. 50-309 ATTN: Mr. Robert H. Groce Senior Engineer-Licensing 1671 Worcester Road Framingham, Massachusetts 01701 Metropolitan Edison Company Docket No. 50-289 ATTN: Mr. H. D. Hukill Vice President and Director of TMI-1 P. O. Box 480 Middletown, Pennsylvania 17057 I
Metropolitan Edison Company Docket No. 50-320 ATTN: Mr. G. K. Hovey Vice President and Director of TMI-2 P. O. Box 480 Middletown, Pennsylvania 17057 4
Niagara Mohawk Power Corparation Docket No. 50-220 ATTN: Mr. T. E. Lempges Vice President Nuclear Generation 300 Erie Boulevard West Syracuse, New York 13202 Northeast Nuclear Energy Company Docket Nos. 50-336 ATTN: Mr. W. G. Counsil 50-245 Senior Vice President - Nuclear 50-423 Engineering and Operations Group P. O. Box 270 Hartford, Connecticut 06101 Philadelphia Electric Company Docket Nos. 50-277 ATTN: Mr. S. L. Daltroff 50-278 Vice President Electric Production l
2301 Market Street i
Philadelphia, Pennsylvania 19101 Power Authority of the State of New York Docket No. 50-286 Indian Point 3 Nuclear Power Plant ATTN: Mr. J. C. Brons Resident Manager P. O. Box 215 Buchanan, New York 10511 l
~
n
,~y 3
?;
s t'
./
r Power Authority of the State of New York Docket No. 50-333 James A. FitzPatrick Nuclear Power Plant ATTN: Mr. John D. Leonard Resident Manager
~,
P. O. Box 41 Lycoming, New York 13093 Public Service Electric and Gas Company D'o5ket Nos. 5J-272 50-311 ATTN:
Mr. F. W. Schneider Vice President - Production C
80 Park Plaza Newark, New Jersey 07101
- m Rochester Gas and Electric Carperation Docket No. 50-244 ATTN:
Mr. John E. Maier Vice President Electric and Steam Production 89 East Avenue Rochester, New York 14645 Vermont Yankee Nuclear Pover Corporation Docket No.'50-271 ATTN: Mr. Robert L. Smith Licensing Engineer 1671 Worcester Road Framingham, Massachusetts 01701 t
Yankee Atomic Electric Company Decket No. 50-29 ATTN:
Mr. James A. Kay 1
Senior Engineer-Licensing 1671 Worcester Road Framingham, Massachusetts 01701 Duquesne Light Company Docket No. 50-412 ATTN:
Mr. E. J. Woolever Vice President 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Jersey Central Power & Light Company Docket No. 50-363-ATTN:
Mr. J. T. Carroll r <,
Acting Director Qyster Creek Nuclear Generating Station P. O. Box 388 C
O'731 Forked River, New Jersey 8
Long Island Lighting Company s
Docket No. 50-322 s
ATTN:
Mr. M. S. Pollock Vice President - Nuclear 175 East Old Country Road x
Hicksville, New York 11801 3
9 9
's 1-5 l
s,
N e
' ~
.. ~..a 3
.1
-4
- n y;
Niagart. Mohawk Cwer Corpo ation Docket No.~50-410 ATTN:
Mr. Gerald K. Rhode Vice President s
j Sy tr.m.Oro oct-Management -
~
c/o Miss Catherine R Seibert 300 Erie Bdulev &d. West
-[
Syracuse, NY - 1 ?.J2 u
~
Pennsylvania Power 3& Light Company Docket Nos. 50-387 ATTN:
~
~
Mr..NoF.nar. Y. Curtis 50-388 Vice President En'ginecring and Construction - Nuclear
- 2. North Ninth' Street Allentown, Pennsylvania 18101
~,,
Philadelphia Electric Company'
[
Docket 9:os,~50-352-ATTN: Nr. John S Kemper 50-353 Vice President s.
Eng ' n eeri ng >a nd 'Re search '
'2301 Market l Street,
Phil ade l phi.a',4.Penn syl v an t a 19101 Public Serv,1ce Electric,16 Gas Company
.ccret Nos. 50-354 ATTN: Mr. T. J. Martin 50-355 Vice President'
~
Engineering and Construction 80 Park Plaza
'17C Newark, N4w Jersey 07101 t',
Public Service' Company of New Hampshire Docket Nos. 50-443
\\
~
ATTN:
Mr.-W. C. Tallman
~ '
50-444 Chairman and Chief Executive Officer 1000 Elm Street y,
c c s Manchester, NeW Hampshirel 03105
~
,s 3
s
~
s 8%
g
~
~..
+7;+
i\\
Li h
c
~
s 1
u.._.
i n
~
2
-i s
s
_s, N
s
~
y+
<ix' r-n.
1 N
'\\*~
( -
g
'\\
n I.'
Y N.
f
(,
,a k Y.Y m
~
m
SSINS No.: 6830 Accessicn NJ.:
8107230029 s
Q IEC 81-1 UNITED STATES af
A
's t
NUCLEAR REGULATORY COMMISSION m.
E-O 1
0FFICE OF INSPECTION AND ENFORCEMENT 2
u, g72 WASHINGTON, D.C.
20555 g
September 25, 1981
((&
N IE CIRCULAR NO. 81-13:
TORQUE SWITCH ELECTRICAL BYPASS CIRCUIT F0 SAFEGUARD SERVICE VALVE MOTORS 9
Background:
A common wiring discrepancy between the as-designed and as-installed valve motor control circuitry caused, at least in part, a valve malfunction at two operating boiling water reactors.
In each case, an electrical bypass circuit around the valve-open torque switch on a Limitorque valve operator was not installed as designed.
The intent of this bypass feature is to override the valve open or valve-close torque switch circuits to ensure that full motor torque is, applied to the valve until it is near full open or full closed.
This is to eliminate the chance of the valve stalling out under emergency conditions before it has completed its travel.
Description of Circumstances:
Brunswick Unit 2 - During a test of the reactor core isolation cooling (RCIC) system at this facility, in March 1978, the injection valve would not open.
The valve and valve motor were checked, cycled and tested; no problems were identified.
In September 1980, following a re2ctor scram, the same valve failed to fully open.
An inspection of the valve motor control circuitry by the licensee revealed that the electrical bypass circuit wiring around the valve-opan torque switJ was not installed as designed.
Examination of other j
RCIC system valves revealed that four of ten similar torque switch bypass circuits had not been installed.
The missing electrical bypasses were installed.
Cooper Stacion - During a test of the residual heat removal (RHR) system at this facility, in December 1980, one of the RHR loop injection line isolation valves i
would not open.
The problem was reported to be an incorrect closing torque switch setting.
However, it was noted and reported, as unrt. lated to this event, that both Train A and Train B injection valve-open torque switch bypass circuits had not been installed in the valve metor control circuitry as designed.
This discrepancy was corrected.
Recommended Action for Holders of Doerating Licenses or Construction Permits:
l 1.
Verify that all valves important to safety, which are required by the design to have torque switch bypass circuits installed, do in fact have these circuits installed.
2.
Verify that all applicable electrical drawings correctly reflect these electrical bypass circuits.
61l
IEC.81-13 Septembar 25, 1981 Page 2 of 2 e
3.
If inspection reveals that required bypass circuits are not instai?ed, installation should be initiated as soon as practicable after the need has been determined.
4.
Establish controls to assure that torque switch bypass circuits are not inadvertently removed and that they are restored if tney are removed for maintenance or test.
No written response to this circular is required; however, if discrepancies are found, a report may be required by applicable Technical Specifications or other NRC reporting requirements.
If you need additional information with regard to this subject, please contact the Director of the appropriate NRC Regional Office.
Attachment:
Recently issued IE Circulars
Attachm:nt 1 IE Circular 81-13 September 25, 1981 RECENTLY ISSUED IE CIRCULARS Circular Data of No.
Subject Issue Issued to 81-12 Inadequate Periodic Test 7/22/81 All power reactor Procedure of PWR Protection facilities with an System OL or CP 81-11 Inadequate Decay Heat 7/23/81 All holders of Removal a power reactor OL or CP 81-10 Steam Voiding in the 7/2/81 All holders of Reactor Coolant System PWR reactor During Decay Heat OL or CP Removal Cooldown 81-09 Containment Effluent 7/10/81 All power reactor Water That Bypasses facilities and and Radioactivity Monitor OL 81-08 Foundation Materials 5/29/81 All holders of a power reactor OL or CP 81-07 Control of Radioactively 5/14/81 All holders of Contaminated Material a power reactor OL o. CP 81-06 Potential Deficiency 4/14/81 All holders of a Affecting Certain Foxboro power reactor 10 to 50 Milliampere OL or CP Transmitters 81-05 Self Aligning Rod 2/3/81 All holders of a End Bushings for Pipe power reactor Supports OL or CP 81-04 The Role of Shift Technical 4/30/81 All holders of Advisors and Importance of a power reactor Reporting Operational Events OL 61-03 Inoperable Seismic 3/2/81 All holders of a Monitoring lastruments power reactor OL or CP J
.