ML20039E144
| ML20039E144 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 12/22/1981 |
| From: | Chiangi N CAROLINA POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8201060578 | |
| Download: ML20039E144 (9) | |
Text
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'Ill'fdr ibkNMr'& Iight Company o.o n.:-
c OfC30 g egr22,1981
-File: SH N-2/18 Item 53 S
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2 Mr. James P. O'Reilly g 579325 c__
United States Nuclear Regulatory Commission I
f 3 wrz; lLI Regio; II
- 4 101 Marietta Street, Northwest ict
,Q a
Atlanta, Georgia 30303 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NOS. 50-400 AND 50-401 WESTINGIOUSE EMD MANUFACTURED GATE VALVES
Dear Mr. O'Reilly:
- Attached is' the second interim report on the subject item which was deemed as reportable on December 4,1980. As stated in the attached report, modification work continues on the Unit 1 and Unit 2 valves for SHNPP. Dates for completion of work ard submittal of *inal reports are:
- 1) Unit 1 - April, 1983; and 2). Unit 2 - April, 1984.
Thank you for yca consideration in this matter.
RDB/mt Yours very truly, Attachment oc:
Mr. G. Maxwell W/A
^ ^ '
Mr. V. Stello (2) W/A N. J.
ngi - Manager Engineering & Construction -
Quality Assurance / Quality Control I
con - -
411 Fayetteville Street
- P. O. Box 1551
- Raleigh.- N. C. 77602 M "'
J. &
1A
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_ _.. =. _.
J.
SHNPP Unit Nos. 1 and 2 3
Westinghouse EMD Manufactured Valves Interim Report No. 2 December 8, 1981 Reportable Under 10CFR50.55(e)
Prepared by:
CP&L 1
I i
9
SUBJECT:
10CFR50.55(e) Reportable Item SHNPP y
Westinghouse EMD Manufactured Gate Valves ITEMS:
See attachment i
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:
November 28, 1980 - N. J. Chiangi informed the NRC (Mr. J. K. Rausch) that this item was potentially reportable under 10CFR50.55(e).
December 4, 1980 - N. J. Chiangi informed the NRC (Mr. J. K. Rausch) that the problem was reportable under 10CFR21 and 10CFR50.55(e).
December 29, 1980 - N. J. Chiangi issued an interim report to James P. O'Reilly.
July 9,1981 - CP&L's response to I. E. Bulletin No. 81-02 supplement (M. A. McDuffie to J. P. O'Reilly ).
November 13, 1981 - CP&L's response to I. E. Bulletin No.
81-02 supplement (M. A. McDuffie to J. P. O'Reilly).
SCOPE OF PROBLEM:
The attached list of valves failed to completely close/open under their design differential pressure.
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 attachment.
CORRECTIVE.
ACTION:
The corrective action recommended by Westinghouse is in the attachment. As can be seen from the attachment, all corrective action is scheduled to be comoleted by October 1, 1982. However, based on past experience with this vendor, a more realistic date of April 1,1983, is expected fu final disposition on SHNPP Unit 1.
Final disposition on Unit 2 would be approximately one year later, or April 19F4. _ _ - _ - -
i
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ATTACllMENT HAXIMUM AP (PSID)
AS FLOW APPROACllES AP (PSID). BELOW EXPECTED WilICil VALVE POTENTIAL DATE OF WILL CLOSE SAFETY Pit 0 POSED ZERO Funct.
CONSEQUENCES HODIFICATION HoulFICATION VAI.VE VALVE FUNCTION Equip.
(AS SilIPPED) _
Spec._
Reymt.
l.V E 1.D._
I,0 CATION ANI) SYSTEM _
2, 4 9/82 del.
A 2750 2750 700 Cl?8 FN 8106 Clig. Pump Miniflow Iso. - CVCS 9/82 del.
A 2, 4 2750 2750
,700 810"
Chg. Line Iso.
- 178FN 9/82 del.
CVCS A
2750 2750 700 2, 4 CH78FN 8103 Chg. Line Iso.
2/22/82 CVCS B
2750 2750 2450 2, 3 I;H78FN 8801A Boron Inj. Tank (open (open)
Iso. - SIS function) 2/22/82 B
2, 3 2750 2750 700
!GH78FN 880lB Boron Inj. Tank (open Iso. - SIS function) 2/22/82 B
2750 2750 2450 2, 3 Boron Inj. Tank (open (open) 8803A TCH78FN Iso. - SIS function) 2/22/8' B
2750 2750 2450 2, 3 3GH78FN 8603B Boron Inj. Tank (open (open)
Iso. - SIS function)
D 0
700 13 g
2750 3CH78FN 0684 IIL Recire. Iso.
2/22/82
[
SIS B
.3CH78FN 8685 CL Recire. Iso.
2750 2750 2450 2, 3 (open (open)
SIS function)
D 2750' 0
700 13
'JGH78FN BBB6 IIL Recire. Iso.
SIS Page 1 of 6
~_. __.
HAXIHUM AP (PSID)
AS FLOW APPROACllES AP (PSID) DELOW EXPECTI:D WilICll VALVE POTENTIAI.
V/.IN E VALVE FUNCTION Equip.
Fudet.
WILL CLOSE SAFEW PROPOSED DATE 01' ZERO LOCATION AND SYSTEM __
Spec.
Reqmt.
(AS SillPPED)
CONSEQU ENCI'S~ HODIFICAT10t1 t10bl FI CATluf f Etlil8FNil 8000A
'PZR. PORV Block 2750 2500 700 1, 5 A
9/82 del.
plNE I.D.
)Cil88 Fill!
8000B PZR. PORV Block 2750 2500 700 1, 5 A
9/82 del.
{CH88F Jil 8030C PZR. PORV Block 2750 2500 700 1, 5 A
9/82 del.
RCS 2/22/82 6
C 200 100 hCH72FB LCVil5C VCT outlet CVCS 2/22/82 6
C 200 100 SCH72Fil LCV115E VCT Outlet CVCS
~
2750 500 850 13 D
4CH78FN 8132A Chg. Pump Disch.
XO Iso. - CVCS 2750 500 850 13 D
4GH78FN Bl32B Chg. Pump Disch.
XO Iso. - CVCS 2750 500 850 13 D
'4CH78FN 8133A Chg.. Pump Disch, XO Iso. - CVCS
~~
2750 500 850 13 D
4CH78FN 0133B Chg. Pump Disch.
XO Iso. - CVCS 8CH72FB LGV115B RWST to Suction 200 200 120 7
B 2/22/82 of CCPs - CVCS 2/22/82 8Cfl10F11 LCV115D RWST to Suction 200 200 120 7
B of CCPs - CVCS 8CH72Fil ill30A CCP Suction-CVCS 200 200 120 6
15 2/22/H2 200 200 120 6
11 2/22/tl2
'BCil7 ?F11
!!130n CGP Suction-CVCS 2/22/82
.llCtr7 2F11 3131A CCP Suction-CVCS 200 200 120 6
li Page 2 of 6
FIAXIFil 1 AP (PSIDj AP (. SID) BELOW EXPECTED P
AS FLOW APPROACIIES POTEtiTIAL DATE Ol' WilICll VALVE PROPOSEI)
SAFETY ZElt0 Funct.
C0t1SEQUE!1CES t!ODIFICATI0tl flon t f l CATiori WILI. CLOSE VALVE FUtiCT10tl Equip.
(AS SilIPPED) _
2/22/82 Spec.
Regmt.
VAINE
' ALVE I.D.
LOCATION AND SYSTEtt 11 6
200
/00 120 2/22/82 CCP Suction-CVCS C
ictt? 2 F4 8131B 8
250 700 300 8706A RllR llX Disch, to 2/22/82 BGtl74FE CCP Suction - RilR C
8 250 700 300 RllR llX Disch, to 8706B 2/22/82 IGti?4 & E CCP Suction - RllR C
9 250 700 300 RllR Disch. Cross DE37A 2/22/82 10Gil74 FE Connect - SIS C
9 250 700 300 8937B RilR Disch. Cross 10Gtl74FE Connect - SIS D
13 1180 200 2750 RilR Pump CL Inj.
8dBBA 10Ctl78 Ft!
D SIS 13 200 1180 2750 RllR Pump CL Inj.
E888B 10GF178Fri D
SIS 13 1180 200 2750 6889 RllR 1[X Disch. to 10Ctl78Fil IIL - SIS 13 D
2200
'2750 1750 Accumulator Disch.
(open (open) 3808A 12Ctl88 Filli SIS function)
D 13 2200 2750 1750 Accumulator Disch.
(open (open) 12Ctl88 Frill 9808B SIS function)
D 13 2750 1750 2200 (open)
Accumulator Disch.
(open 12Gtl8tlFill!
0808C S15 function)
,2/22/112 11 10 490 700 700 RllR Suction Iso.,
8701A 12 Gel 88SEli Outer - KilR Page 3 of 6
4 -
]
MAXIMUM A 't- (PSID)
AP (PSID) E" LOW EXPECTED AS FLOW APPROACllES WilICll VALVE PROl'OSED POTENTIAL DATE OF SAFETY flODI FICATiuf f
+
ZERO WILL CLOSE Funct.
CONSEQUENCES MODIFICATIO!!
Equip.
(AS SilIPPED) __
2/22/82 VALVE FUNCTION Reqmt._
VALVE Spec.__
B AND SYSTEM 10 LOCATION 490
- LV E 1.D._
700 700 RilR. Suction Iso.,
2/22/82 870'.B B
eGM88 Sell Outer - RilR 11 490 700 700 RilR Suction Iso.,
2/22/82 8702A 2GM8SSEll Inner - RilR 11 B.
490 700 700 RilR~ Suction Iso.,
8702D
~
D 2CM88SEli Inner - RilR 13 300 100 700 RWST to RilR Pump 8399A 14GM74FE Suction - SIS 13 D
300 100 700 RWST to RilR Pump 8809B D
14CM74FE Suction - S1S 13 300 100 700 Sump Suction - SIS 13 D
8811A 300.
14GM14FE 100 2/22/82 700 Sump Suction - SIS 12 B
8811B 300
- 14CM7'eFE 700 2/22/82 700 Sump Suction - SIS 12 B
BS12A 300 14CM7/e FE 700 s
700 Sump Suction - SIS 8812B 14CM74FE y
i nits.
Engh valve contracted for all four Shearon liarr s u Loop for EPRI Test Program, NOTES:
Unit 2 valve sent to Marshall Test a) to Pilgrim.
Unit 2 valve sent Unit 2 valve sent to Farley via Westinghouse, b)
- equences, See Enclosure 1 for key to potential safety consSee Enclosure c) el)-
e) 4 Page 4 of 6
' TO POTENTIAL SAFETY CONSEQUEl_;S
-f H
4 CONSEOUENCE I.D. NO. -
(PORV Block Valves) Potential incomplete isolation of 1
l I
pressurizer PORV.
Potential cavitation of a centrifugal charging pu=p or 2
safety injection pump due to operation beyond maximum i
~ runout flow.
Potential inability to perform post-accident containment 3
isolation.
Potential degradation of safety injection flow below l4 values in SAR.
4 Potential inability to isolate RCS pressure boundary.
5 Two valYes in series; f ailure of either ' valve to close 6
Alternate reduces redundancy of providing isolation.
valve will provide isolation.
One MOV in each of two parallel paths from the RWST to 7
suction of the.CCPs;. failure reduces redundancy of
~
providing isolation of RWST during the recirculation Isolation will be provided by a phase following a LOCA.
check valve in series with the two paths.
Valve is opened for recirculation phase following a LOCA.
8 Failure of valve to close precludes-reali,gnment of RHRS for. normal operation.
Failure of valve to close reduces redundancy of providing <
9 low lead train separation during: CL recircula' tion phase Train separation can be achieved by l
following a LOCA.-
closing other valve.
j Two valves in series; failure of outer isolation valve to '
1 10 Isolatio!
l close reduces redundancy-of providing isolation.
[.
1s provided by closing the inner valve.
l Same as-No. 10 above except for closing the outer valve.
11 Valve is op'ened for recirculation following-a LOCA.
Valve 12 Valve would be closed for containment isolation.
L
-is encapsulated within a protective housing which acts. as Failure of either the redundant containment isolation. Alternate valve.wi valve to close reduces redundancy.
provide isolation.
identified - valve meets functienal require =ent.
13 None yet Page 5,of 6
13Y TO PROPOSED MODIFICATIO%
I.D.
MODIFICATION A.
-Replacement valve - valve must be shipped back to manufacturer.
2 Ce:r chsn;;c - codificatien ces he ; erformed on :itc.e't.h valuc installed.
C Adjust torque switch - modification can be performed on site with valve installed.
D No modification indicat'ed - valve meets functional requirement.
x Page 6'of 6
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