ML20083G751
| ML20083G751 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 12/29/1983 |
| From: | Parsons R CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| CON-NRC-163, REF-PT21-83, REF-PT21-83-104-000 10CFR-50.55E, IEB-81-02, IEB-81-2, PT21-83-104, PT21-83-104-000, NUDOCS 8401060420 | |
| Download: ML20083G751 (9) | |
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CD&L g Ca a Power & Light Company P. O. Box 101, New Hill, N. C. 27562 December 29,1983 Mr. James P. O'Reilly NRC-163 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)
Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 WESTINGHOUSE EMD hiANUFACTURED GATE VALVES, i
ITEM 53
Dear Mr. O'Reilly:
I
. Attached is our fourth interim report on the subject item which was deemed reportable
.per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on December 4,1980. CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report will be accomplished by March 1,1984.
Thank you for your consideration in this matter.
Yours very truly, i
R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/sh Attachment 1
L cc:. Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP) l Mr. R. C. DeYoung f
i 8401060420 831229 PDR ADOCK 05000400 i
S PDR TWiCIAL PCWV
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I CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNITS 1 AND 2 INTERIM REPORT DECEMBER 28, 1983 WESTINGHOUSE EMD MANUFACTURED GATE VALVES ITEM 53 REPORTABLE UNDER 10CFR50.55(e) AND 10CFR21
SUBJECT:
10CFR50.55(e) and 10CFR21 Reportable Item Shearon Harris Nuclear Power Plant Westinghouse EMD Manufactured Gate Valves Item 53 ITEM:
See attachment SUPPLIED BY:
Westinghouse Electro-Mechanical Division NATURE OF DEFICIENCY:
Potential for valves not to fully close/open under design conditions.
DATE PROBLEM WAS CONFIRMED TO EXIST:
Westinghouse Letter CQL-6135 dated November 19, 1980 received November 26, 1980.
PROBLEM REPORTED:
On N vember 28, 1980, N. J. Chiangi informed the NRC o
(Mr. J. K. Rausch) that this item was potentially reportable under 10CFR50.55(e).
On December 4,1980, N. J. Chiangi informed the NRC (Mr. J. K. Rausch) that the problem was reportable under 10CFR21 and 10CFR50.55(e).
On December 29, 1980, N. J. Chiangi issued an interim report to the NRC (Mr. James P. O'Reilly).
On July 9, 1981, CP&L's response to I. E. Bulletin No. 81-02 was submitted to the NRC (M. A. McDuffie to J. P. O'Reilly).
On November 13, 1982, CP&L's response to I. E. Bulletin No. 81-02 (supplement) was submitted to the NRC (M. A. McDuffie to J. P. O 'Reilly).
On December 22, 1981, N. J. Chiangi issued a second interim report to the NRC (James P. O'Reilly).
l On April 8,1983, R. M. Parsons issued a third interim
(
report to the NRC (James P. O'Reilly).
l SCOPE OF l
PROBLEM:
The attached list of valves failed to completely open/close l
under their design differential pressure.
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1 REASON PROBLEM IS REPORTABLE:
Failure of these valves to properly function could create or lead.to a significant safety deficiency. The potential safety significance of each valve is listed in the attached table.
CORRECTIVE
. ACTION:
The hardware and software changes have been completed for each of the affected valves listed in the attached table.
In addition, SHNPP design documents have been issued for restamping of all affected valve tags.
It is projected that the restamping of the valve tags and submission of the final report will he accomplished by March 1, 1984.
TABLE 1 MAXIMUM P (PSID)
AS FLOW APPROACHES P (PSID) BELOW (d)
ZERO WHICH VALVE POTENTIAL (e)
VALVE VALVE VALVE FUNCTION Equip.
Funct.
WILL CLOSE SAFETY ACTUAL DATE OF I.D.
LOCATION AND SYSTEM Spec.
Reqmt.
(AS SHIPPED)
CONSEQUENCES MODIFICATION MODIFICATION 3GM78FN 8106 Chg. Pump Miniflow 2750 2750 700 2, 4 A
9/82 del.
Iso. - CVCS 3GM78FN 8107 )
Chg. Line Iso.
2750 2750 700 2, 4 A
9/82 del.
c CVCS 3GM78FN 8108 )
Chg. Line Iso.
2750 2750 700 2, 4 A
9/82 del.
c CVCS 3GM78FN 8801A Boron Inj. Tank 2750 2750 2450 2, 3 B
2/22/82 Iso. - SIS (open (open) func tion) 3GM7GFN 8801B Boron Inj. Tank 2750 2750 700 2, 3 B
2/22/82 Iso. - SIS (open function) 3GM78FN 8803A Boron Inj. Tank 2750 2750 2450 2, 3 B
2/22/82 Iso. - SIS (open function) i j3GM78FN 8803B Boron Inj. Tank 2750 2750 2450 2, 3 B
2/22/82 Iso. - SIS (open function) l
, 3GM78FN 8884 HL Recire. Iso.
2750 0
700 13 D
SIS I
3GM78FN 8885 CL Recire. Iso.
2750 2750 2450 2, 3 B
2/22/82 SIS (open function) 3GM78FN 8886 HL Recirc. Iso.
2750 0
700 13 D
j SIS l
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TABLE 1 1
MAXIMUM P (PSID)
AS FLOW APPROACHES P (PSID) BELOW (d)
ZERO WHICH VALVE POTENTIAL (e) 4 VALVE VALVE VALVE FUNCTION Equip.
Funct.
WILL CLOSE SAFETY ACTUAL DATE OF I.D.
LOCATION AND SYSTEM Spec.
'Reqmt.
(AS' SHIPPED)
CONSEQUENCES MODIFICATION MODIFICATION 8cM72FB 8130A CCP Suction - CVCS 200 200 120 6
B 2/22/82 8GM72FB 8130B CCP Suction - CVCS 200.
200
.120 6
B 2/22/82 8CM72FB 8131A CCP Suction - CVCS 200 200 120 6
B 2/22/82' 8CM72FB 8131B CCP Suction - CVCS 200 200 120 6
B 2/22/82 8GM74FE 8706A RHR HX Disch. to 700 300 250 8
.C 2/22/82 CCP Suction - RHR 8cM74FE 8706B RHR HX Disch. to 700 300 250 8
C 2/22/82.
CCP Suction - RHR 10GM74FE 8887A RHR Disch. Cross 700 300 250 9
C 2/22/82 Connect - SIS 10GM74FE 8887B RHR Disch. Cross 700 300 250 9
C 2/22/82 Connect - SIS 10GM78FN 8888A RHR Pump CL InJ.
2750 200 1180 13 D
SIS 10GM78FN 8888B RHR Pump CL Inj.
2750 200 1180 13 D
SIS 10GM78FN 8889 RHR HX Disch. to 2750 200 1180 13 D
HL - SIS 12GM88FNH 8808A Accumulator Disch.
2750 1750 2200 13 D
SIS (open function) 12GM88FNH 8808B Accumulator Disch.
2750 1750 2200 13 D'
1 SIS (open
[
function) i
t TABLE 1 MAXIMUM P (PSID)
AS FLOW APPROACHES P (PSID) BELOW (d)
ZERO WHICH VALVE POTENTIAL (e)'
VALVE VALVE VALVE FUNCTION Equip.
Funct.
WILL CLOSE SAFETY ACTUAL DATE OF I.D.
LOCATION AND SYSTEM Spec.
Re ga t.
(AS SHIPPED)
CONSEQUENCES MODIFICATION MODIFICATION 12GM88FNH 8808C Accumulator Disch.
2750 1750 2200 13 D
SIS (open function) 12GM88SEH 8701A RHR Suction Iso.,
700 700 490 10 B
2/22/82 Outer - RHR 12GM88SEH 8701B RHR Suction Iso.,
700 700 490 10 B
2/22/82 Outer - RHR 12GM88SEH 8702A RHR Suction Iso.,
700 700 490 11 B
2/22/82 Inner - RHR 12GM38SEH 8702B RHR Suction Iso.,
700 700 490 11 B
2/22/82 Inner - RHR 14GM74FE 8809A RWST to RRR Pump 700 100 300 13 D
Suction - SIS 14GM74FE 8809B RWST to RRR Pump 700 100 300 13 D
Suction - SIS 14CM74FE 8811A Sump Suction - SIS 700 100 300 13 D
14GM74FE 8811B Sump Suction - SIS 700 100 300 13 D
14GM74FE 8812A Sump Suction - SIS 700
.700 300 12 B
2/22/82 14GM74FE 8812B Sump Suction - SIS 700 700 300 12 B
2/22/82 NOTES:
Each valve contracted for both Shearon Harris units, a) Unit 2 valve sent to Marshall Test Loop for EPRI Test Program h) Unit 2 valve sent to Pilgrim c) Unit 2 valve sent to Farley via Westinghouse d) See Enclosure 1 for key to potential safety consequences
=
e) See Enclosure 2 for key to actual modifications a
KEY TO POTENTIAL SAFETY CONSEQUENCES I.D. No.
CONSEQUENCE 1
(PORV Block Valves) Potential incomplete isolation of pressurizer PORV.
2 Potential cavitation of a centrifugal charging pump or safety injection pump due to operation beyond maximum i
runout flow.
3 Potential inability to perform post-accident containment isolation.
4 Potential degradation of safety injection flow below values in SAR.
5 Potential inability to isolate RCS pressure boundary.
6 Two valves in series; failure of either valve to close reduces redundancy of providing isolation. Alternate valve will provide isolation.
7 One MOV in each of two parallel paths from the RWST to suction of the CCPs; failure reduces redundancy of providing isolation of RWST during the recirculation phase following a LOCA. Isolation will be provided by a check valve in series with the two paths.
8 Valve is opened for recirculation phase following a LOCA.
Failure of valve to close precludes realignment of RHRS i
f or normal operation.
I 9
Failure of valve to closc reduces redundancy of providing low lead train separatio's during CL recirculation phase following a LOCA. Train separation can be achieved by closing other valve.
10 Two valves in series; failure of outer isolation valve to close reduces redundancy of providing isolation.
Isolation is provided by closing the inner valve.
11 Same as No. 10 above except for closing the outer valve.
l 12 Valve is opened for recirculation following a LOCA.
Valve would be closed for containment isolation Valve is encapsulated within a protective housing which acts as 1
the redundant containment isolation.
Failure of either valve to close reduces redundancy. Alternate valve will provide isolation.
13 None yet identified - valve meets functional requirement.
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, Enclosure 2 KEY TO ACTUAL MODIFICATIONS I. D.
MODIFICATION A
Valves will be replaced - original valves utilized elsewhere.
B Gear change - modification performed on site with valve installed.
C Adjust torque switch - modification performed on site with valve installed.
D No modification indicated - valve meets functional require:aent.
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