ML20039E144

Second Interim Deficiency Rept Re Westinghouse Electro Mechanical Div Mfg Gate Valves Not Closing or Opening Per Design Specs,Initially Reported 801204.Next Rept Will Be Submitted by 830401

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 c.o n .:-

OfC30 g egr22,1981

-File: SH N-2/18 "

Item 53 S 9 Q :, ..2 ,in L:a '

. -l ' g Mr. James P. O'Reilly '

United States Nuclear Regulatory Commission g 579325 c__

Regio; II ,

& f 3#4wrz; lLII a

101 Marietta Street, Northwest ict ,Q 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

. __. . _ ._. . ~ . . _ _ . . = . _ . .. _. _ . _ . _ _ -

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 ATTACllMENT HAXIMUM AP (PSID) EXPECTED AS FLOW APPROACllES AP (PSID) . BELOW POTENTIAL DATE OF ZERO WilICil VALVE Pit 0 POSED SAFETY Funct. WILL CLOSE HoulFICATION Equip.

VAI.VE VALVE FUNCTION Spec._ Reymt. (AS SilIPPED) _ CONSEQUENCES HODIFICATION l.V E 1.D ._ I,0 CATION ANI) SYSTEM _

2, 4 A 9/82 del.

2750 700 Clig. Pump Miniflow 2750 Cl?8 FN 8106 Iso. - CVCS 2, 4 A 9/82 del.

2750 2750 ,700 -

810" Chg. Line Iso. -

1. 178FN 9/82 del.

CVCS A 700 2, 4 2750 2750 8103 Chg. Line Iso.

CH78FN CVCS 2, 3 B 2/22/82 2750 2450 Boron Inj. Tank 2750 (open)

I;H78FN 8801A (open Iso. - SIS function) 2, 3 B 2/22/82 2750 700 '

Boron Inj. Tank 2750

!GH78FN 880lB (open Iso. - SIS function)

• B 2/22/82 2450 2, 3 2750 2750 8803A Boron Inj. Tank (open (open) '

TCH78FN Iso. - SIS function)

B 2/22/8' 2450 2, 3 2750 2750 8603B Boron Inj. Tank (open (open) 3GH78FN Iso. - SIS function) -----

13 D 0 700 -

g 2750 0684 IIL Recire. Iso. ..

3CH78FN SIS 2, 3 B 2/22/82 [

2450  !

2750 2750 '

8685 CL Recire. Iso. (open (open) ,.

.3CH78FN SIS .

function) 13 D 0 700 .

2750' IIL Recire. Iso.

'JGH78FN BBB6 SIS

. . Page 1 of 6 ,

~_. __. -

HAXIHUM AP (PSID) '

EXPECTI:D AS FLOW APPROACllES AP (PSID) DELOW WilICll VALVE POTENTIAI.

ZERO PROPOSED DATE 01' WILL CLOSE SAFEW Equip. Fudet. t10bl FI CATluf f V/.IN E VALVE FUNCTION Reqmt. (AS SillPPED) CONSEQU ENCI'S~ HODIFICAT10t1 AND SYSTEM __ Spec.

plNE I .D. LOCATION 1, 5 A 9/82 del.

2500 700

'PZR. PORV Block 2750 Etlil8FNil 8000A ,

RCS 9/82 del.

1, 5 A 2750 2500 700 8000B PZR. PORV Block .

)Cil88 Fill!

RCS .

1, 5 A 9/82 del.

2500 700 PZR. PORV Block 2750

{CH88F Jil 8030C .

RCS 2/22/82 6 C 200 100 hCH72FB LCVil5C VCT outlet .

CVCS 6 C 2/22/82 200 100 -

SCH72Fil LCV115E VCT Outlet

~ CVCS ------

13 D 500 850 Chg. Pump Disch. 2750 4CH78FN 8132A -

XO Iso. - CVCS .

13 D 500 850 Chg. Pump Disch. 2750 4GH78FN Bl32B .

XO Iso. - CVCS .

13 D 500 850 Chg. . Pump Disch, 2750

'4CH78FN 8133A XO Iso. - CVCS ----~~

13 D 500 850 Chg. Pump Disch. 2750 4CH78FN 0133B XO Iso. - CVCS 2/22/82 7 B 200 120 200 8CH72FB LGV115B RWST to Suction of CCPs - CVCS 2/22/82 7 B 200 120 200 8Cfl10F11 LCV115D RWST to Suction of CCPs - CVCS 2/22/H2 15 120 6 200 200 8CH72Fil ill30A CCP Suction-CVCS 2/22/tl2 11 120 6 200 200

!!130n CGP Suction-CVCS 2/22/82

'BCil7 ?F11 6 li 200 120

. 200

.llCtr7 2F11 3131A CCP Suction-CVCS Page 2 of 6 .

FIAXIFil 1 AP (PSIDj EXPECTED AP (. PSID) BELOW AS FLOW APPROACIIES POTEtiTIAL DATE Ol' ZElt0 WilICll VALVE PROPOSEI)

SAFETY flon t f l CATiori Funct. WILI. CLOSE Equip. C0t1SEQUE!1CES t!ODIFICATI0tl VAINE VALVE FUtiCT10tl Regmt. (AS SilIPPED) _

AND SYSTEtt Spec.

11 2/22/82 LOCATION 6

' ALVE I .D . /00 120 200 2/22/82 8131B CCP Suction-CVCS 8 C

ictt? 2 F4 250 700 300 8706A RllR llX Disch, to BGtl74FE CCP Suction - RilR C 2/22/82 8

300 250 _

RllR llX Disch, to 700 IGti?4 & E 8706B 2/22/82 CCP Suction - RllR ,

9 C

300 250 700 DE37A RllR Disch. Cross 10Gil74 FE Connect - SIS C 2/22/82 9

300 250 700 8937B RilR Disch. Cross ---

10Gtl74FE Connect - SIS D 13 200 1180 RilR Pump CL Inj. 2750 8dBBA ----

10Ctl78 Ft! SIS D 13 200 1180 RllR Pump CL Inj. 2750 10GF178Fri E888B --- --

SIS D 13 200 1180 2750 6889 RllR 1[X Disch. to --

10Ctl78Fil IIL - SIS D 13 1750 2200

'2750 (open) 3808A Accumulator Disch. (open 12Ctl88 Filli SIS function) -

13 D

1750 2200 2750 (open) 9808B Accumulator Disch. (open 12Ctl88 Frill SIS function) - ---

D 13 1750 2200 2750 (open) 0808C Accumulator Disch. (open 12Gtl8tlFill! S15 function) ,2/22/112

.. 11 10 700 490 RllR Suction Iso., 700 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 POTENTIAL DATE OF

+ PROl'OSED ZERO SAFETY flODI FICATiuf f Funct. WILL CLOSE Equip. CONSEQUENCES MODIFICATIO!!

VALVE FUNCTION Reqmt._ (AS SilIPPED) __ 2/22/82 VALVE Spec.__ B AND SYSTEM 10

LV E 1 .D ._ LOCATION 490 700 700

• RilR. Suction Iso., 2/22/82 870'.B B eGM88 Sell Outer - RilR 490 11 700 700 8702A RilR Suction Iso., '

2/22/82 2GM8SSEll B.

Inner - RilR 490 11 700 700 RilR~ Suction Iso. , - ---

2CM88SEli 8702D .

D Inner - RilR

~

13 100 300 700 RWST to RilR Pump -- -

8399A D 14GM74FE Suction - SIS 300 13 -

700 100 RWST to RilR Pump --- -

8809B D 14CM74FE Suction - S1S 13 100 300 ' ---- -

700 D 8811A Sump Suction - SIS 13 14GM14FE 100 300.

700 B 2/22/82 8811B Sump Suction - SIS 12 .

- 14CM7'eFE 700 300 700 .

B 2/22/82 BS12A Sump Suction - SIS 12 14CM7/e FE 700 300 s 700 8812B Sump Suction - SIS y

14CM74FE i nits.

Engh valve contracted for all four Shearon liarr s u NOTES: Loop for EPRI Test Program,

. a) Unit 2 valve sent to to Marshall Pilgrim. Test b) Unit 2 valve sent Unit 2 valve sent to Farley via Westinghouse, equences, c) el)-

e)

See Enclosure 1 for key to potential safety consSee Enclosure 4

Page 4 of 6 .

-f ' TO POTENTIAL SAFETY CONSEQUEl_;S ,

4 .. . H l

' - CONSEOUENCE  ;

I.D. NO. -

1 (PORV Block Valves) Potential incomplete isolation of I<

l pressurizer PORV.

2 Potential cavitation of a centrifugal charging pu=p or safety injection pump due to operation beyond maximum i

• - ~ runout flow. .

' 3 Potential inability to perform post-accident containment isolation.

l4 Potential degradation of safety injection flow below 4

• values in SAR.

5 Potential inability to isolate RCS pressure boundary.

6 Two valYes in series; f ailure 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 duringwill Isolation thebe recirculation provided by a phase following a LOCA.

check valve in series with the two paths. ,

8 Valve is opened for recirculation phase following a LOCA.

Failure of valve to close precludes-reali,gnment of RHRS for. normal operation.

9 Failure of valve to close reduces redundancy of providing <

, low lead train separation during: CL recircula' tion phase l

' ' following a LOCA.- Train separation can be achieved by .

closing other valve. . . j 1

10 Two valves in series; failure of outer isolation valve to '

Isolatio!

l close reduces redundancy-of providing isolation. >

[. 1s provided by closing the inner valve.

l 11 Same as-No. 10 above except for closing the outer valve. ,

12 Valve is op'ened for recirculation following-a LOCA.Valve

• L Valve would be closed for containment isolation.

-is encapsulated within a protective housing which acts. as Failure of either the redundant valve containment to close reduces isolation. Alternate valve.wi redundancy.

provide isolation.

None yet identified - valve meets functienal require =ent.

13 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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