ML18139B039

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Forwards Revision 1 to Util 810105 Response to IE Bulletin 80-24, Prevention of Damage Due to Water Leakage Inside Containment (Oct 17,1980 Indian Point 2 Event). Cooling Water Sys Leakage Into Containments Summarized
ML18139B039
Person / Time
Site: Surry  Dominion icon.png
Issue date: 01/16/1981
From: Sylvia B
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
950A, IEB-80-24, NUDOCS 8102050271
Download: ML18139B039 (7)
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Text

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VIRGiNIA ELECTRIC AND POWER*COMP&NY' -:-

1 RICHMOND, VIBGIN XA 23261 January 16, 1981 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W., Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

Serial No. 950A NO/RMT:jmj~~

Docket Nos~

License Nos. DPR-32 DPR-37 By our letter Serial No. 950 dated January 5, 1981, we forwarded responses to Inspection and Enforcement Bulletin No. 80-24. Attached is Revision 1 to our response for Surry Power Station Unit Nos. 1 and 2.

Enclosure Very truly yours,

if~~-~*

B. R. CSylvia Manager - Nuclear Operations an4 Maintenance cc:

Director, NRC Office of Inspection and Enforcement Washington, D.C.

20555

RESPONSE TO IEB-80-24 PREVENTION OF DAMAGE DUE TO WATER LEAKAGE Enclosure Page 1 INSIDE CONTAINMENT (OCT. 17, 1980 INDIAN POINT 2 EVENT)

HIGHLIGHTS:

At Surry, there are no open service water cooled systems within the containment during normal plant operations.

The Rx vessel is located at such an elevation as to provide numerous diversified indications of flooding prior to reaching a level where the vessel would be exposed to external water.

SPECIFIC RESPONSE:

1)

The service water to the recirculating spray system heat exchangers is the only open cooling water system present inside containment.

a)*

During normal operation, this system is isolated and drained.

This system is automatically unisolated to perform its necessary function.

During Hi-Hi CLS LOCA conditions, this system is automatically unisolated to provide service water flow through the Recirculation Spray Heat Exchangers.

b)

River Water - Chemistry; Typtical pH 7.6 Cl 3500 PPM, Na+ 2400 PPM.

c)

Material of piping and coolers:

H/X - 90/10 CuNi 1.5-2.0% Fe Tubes - 90/10 CuNi l. l'-1.5% Fe Piping - Stainless Steel-* RS Carbon Steel -

SW NO'fE:

The H/X flanged strong-backs use a welded diaphragm for leak-tightness design.

(d) History and type of repairs to coolers and piping systems (Attach-ment 1).

All leaks were small air leaks-identified when an air pressure was placed on the normally dry system.

(e)

The individual line to and from the containment can be remotely iso-lated from the Control Room and can be manually isolated in the-Safeguard's Building, which is external to the containment.

In addition, the system valving allows for remote and/or manual isola-*

tion of two supplying lines should one-of the single isolation valves fail.

Two operable H/X' s remain in service.

There is only the one isolated valve on the discharge side of the RS H/X; however, because, of this elevation and the normal vacuum on the discharge tunnel, this is adequate for isolation.

These, valves have not been classified as containment boundry valves and are therefore not tested in accordance with 10 CFR 50, Appendix J.

An Engineering Review is currently in progress by the Architect Engineer to evaluate the classification of all containment boundry valves.

2)

Enclosure Page 2 This section is not applicable due to the fact that there is only an open system during a LOCA condition.

(a)

Monthly surveillance to evaluate containment sump level and pumping system are available.

Continuous safe operation will be evaluated in the event either the detection or removal systems become inoperable.

3.

Summary of experience of cooling water system leakage into containments (January, 1980 - June, 1980).

(Attachment 2).

2 002061300 SW MOV MOV-SW-205A.

2 002061301 SW

.MOV MOV-SW-204A 2

020164291 SW PUMP 2-SW-5B 2

803090838 SW MOV MOV-SW-20JA 2

803090840 SW MOV MOV-SW-20JB 2

803201115 SW-MOV MOV-SW-203A 2

803201116 SW MOV MOV-SW-203B i

805281801 SW HOV HOV.;.SW-105D 1

805281803 SW HOV HOV-SW-105C 1

805281806 SW HOV MOV-SW-105B l

  • 805281807 SW MOV MOV.:..sw-,104D l

805281809 SW MOV*

W* LMOV-SW-lOJA 1

805281810 SW HOV MOV-SW-104C 1

805281813 SW HOV MOV-S.W-104B l

8052(11816 SW MOV MOV-SW-104A i

805281818 SW MOV MOV-SW-104A l

805281819 SW MOV MOV-SW-i04A 1

805281820 SW MOV MOV-SW-lOJC ATTACHMENT 1 Does Not Cl~se Tightly Complet~4 As Per Emp-P-MOV-45 Does Not Close Ti$htly Completed As Per Emp-P-MOV-45 Low Disch Pres~

Clea~ed ~ozzle Inlet Pipe+Nozzle Reseat Cleaned+ Adjusted Reseat

  • Cleaned+ Adjusted Disconnect For Mech Maintenance Disc Recon Tested Disconnect.For,,Mech.Mailfntenance ~**

Disc Reworked LS Gear DX Set+Test Clean I~~pecttTeat Cleaned Inspected+Tested Glean Inspect+Test Cleaned lnspected+Testcd Clean InspectfTest

  • Cleaned lnspected+Teated Clean Inspect+Test Cleaned lnspected+Tested Clean Inspect+Test Cleaned Checked.~Hcc 1 Clean Inspect+Test Cleaned Inspected+Tested Clean Inspect+Test Cleaned In*spected+Tes ted Clean Inspect+Test Cleaned Inspected+Tested Clean Inspect+Test
  • Cleaned+Checked MCC Clean Inspect+Test Cleaned+Checked MCC

. Clean InspecttTest Cleaned+Checked MCC

    • ~.....

02/19/80.

02/19/80 '

io12a111 OJ/29/78 03/29/78 03/29/78.

03/29/78 06/05/78 06/05/78 06/05/78 06/05/78 06/15/78 06/05/78 06/05/78 06/05/78 06/15/78 06/15/78

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'A'ITACHMBNT 1 r-r1

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MR SYS MARKNO

SUMMARY

~ I WKPERF RETSERVDT 1

805281835 SW HOV HOV-SW-106A Clean Inspect+Test(Alleyway)

Cleaned Inspected+Tested 06/07/78 09/07/78 2

903071246 SW Valve HOV-SW-203B Rernoye An4 Test Bef~re Cleaning Remove Valve Teste~ Reinstalled 05/08/79 2

90307i247 SW Valve HOV-SW-203A Remove Ane Test Before Cleaning Tested V Al.ve 05/08/79 2

903071248 SW Pump.

HOV-SW-203~

Disconn~ct For ~echfReconnect Reconnected.,Test Sat 04/02/79 2

903071249 SW Valve HOV-SW-203A Disconnect For Hecht Reconnect Connected And Tested*S~t 04/02/79 1

90~090522 SW Pump Coupling Brok!!n Void 06/06/79 2

907090930 sw Valve 2-SW-209 Steam Broken Installed New Valve 01/07/80 2

907091540 SW Pipin~ 2-SW-207

  • Repair'orai~ Line Installed New Valve 09/13/79 2

907130828 SW Valve 2-SW-206 Excessive Leakage On PT.16.4 Repaired Valve 01/26/80 2

907130829 sw Valve 2-SW-208 E~cessive Leakage 0~ PT... 16.4 Repaired Valve 01/26/80 2

907281400 SW Instr Alarm SW Faulty Alarm SW Repaired 07/30/79 2

003051240 SW Piping 24-WS-128-10 Expansion Joint Deformed Void 04/30/80 2

003051412 SW Piping 24-WS-135..;.10 Remove Expansion Joint Replaced Seats Tested At 45 PSI 07/17/80 2

003051413 sw Piping 24-WS-130-10 Remove Expansion Joint Replaced Seats And Restu4 At 45 PSI 07/17/80 -

2 003051414 sw Piping 24-WS-128-10 Remove Expansion Jo!nt Replaced Seats Tested At 45 PSI *

'07/02/80 2

003051415 sw Piping 24-WS-134-~0 Remove ~xpansioq Joint Adjusted Seats T~sted At ~5 PSI 07/02/80 1

003051416 sw Piping 24-WS-126-10 Remove Expansion Joint Replaced Seats rested Sat 45 fSl 06/26/80 2

003261004 S\\-1 HOV HOV-SW-205C Packipg Leaks 07/28/80 2

00418150Q sw Valve HOV-SW-203A Remove'And Test for Leakage Replaced Seats+Expansion Joint 05/07/80 2

004181501 sw Valve HOV-203A Remove And Test For Leakage Adjust Limit Switches 05/09/80 2

004301429 sw HOV HOV-SW-20JC Disconnect Motor For Mechanics

  • complete 06/25/80 2

004301906 SW Valve 2-SW-206 Leaks Thru On PT 16.4 Lapped Disc+Seats 05/06/80 2

00430190!1 sw Aux 2-SW-208 Leak Thru Oq PT i6~4; Lapped Disc+Seats 05/06/80 2

005100948 SW HOV HOV-SW-204D Leaks Thru Hov**Clean Dry And Back In Service 05/13/80 2

005101106 SW HOV HOV-SW-205C Leaks Thru 07/28/80 2

005280950 SW Piping 24-WS;..135-10 Install Ne~ Joint 2

006100900 SW Valve Hov-sw..:.205A Leaks Through

  • Adjusted Seats Test Sat At 45 PSI Sat 06/26/80 2

006241849 SW Piping 2-SW-67 Bolt Missing Replaced Bolt 06/25/80 2

006241852 SW Valve 2-SW-68 Stem Bent Straightened Stem 06/25/80 2

007301415 SW Valve HOV-SW-205C Cracks In.Joints 2

007301416 SW Valve MOV-SW-205D. Cracks In Joints 1

009191425 SW MOV HOV-SW-103A Overhaul 1

009191426 SW HOV HOV-SW-lOJB Overhaul 1

009191427 SW HOV MOV-SW-103C Remove Blank Off Water Supply e

1 009191428 SW MOV Mov..;sw-1030 Remove Blank Off W~ter Supply 2

009261135 sw Valve 2-SW-113 Check Valve Up~tream Of 2-SW-11 Repaired Clieclt Valve 9/26/80 1

009261230 SW Valve l-SW-113 Replace Check Valve 2

011100~15 SW Valve 2-SW-208 Water Leak Around Stem Repacked 11/11/80 2

803051307 SW Piping 2-SW-176-21B Hole In Pipe Of Lealting Joint lb 0

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ATTACHMENT 1

~,

u MR SYS MARKNO

SUMMARY

WKPERF RETSERVD**

I 2

003050900 RS HX 2-RS-E-lB INSPECT AND REPAIR DIAPHRAGM REPAIRED 03/06/80 2

003051200 RS PIPING 2-RS-E-lA FLANGE LEAK REP.LACED GASKET 03/24/80 2

003060920 RS HX 2-RS-E-lC INSPECT.AND REPAIR DIAPHRAGM REPAIRED DIAPHRAGM 04/30/80 2

904021710 RS HX 2-RS-E-lD RMV LEAKING TUBE FOR ANALYSIS PLUr..r.ED TUBE 02/25/80 1

011040512 RS HX 1-RS-E-lA RECIRC SPRAY HXS WATER IN SHELL WORK IN PROGRESS 2

S2-016477 RS HX 2-RS-~-lB TUBE LEAK PLUGGED TUBES 11/22/77 2

S2-016138 RS HX 2-RS-E-lD TUBE LEAK PLUGGED TUBES 10/03/77 2

S2--016137 RS HK 2-RS-L-lC TUBE LEAK PLUGGED TUBES 10/03/77 2

S2--016136 TS HX 2-Iq..-E-lB TUBE LEAK PLUGGED TUBES 10/03/77 2

S2-016074 RS HX "D" RS HX BROKEN TUBE PLDEGED:CTUBES 10/04/77 1

Sl--015166 VALVE MOV-RS-155A FLANGE LEAKS TIGHTENED ALL FLANGES Ol/ 19/71 2

S2--013585 RS HX 2-RS-E-lD TUBE LEAK PLUGGED TUBE 11/19/76 2

S2--0l2542 RS HX 2-RS-E-lA TUBE LEAK PLUGGED. TUBES 05/29/76 l

Sl--022715 RS HX 1-RS-E-lA FITTING LEAKS REPLACED BAD fITTINGS 12/05/74 -

l,..) I-'

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~ys MARK~O 2

003050545

~c

  • Valve 2-cc-218 2

005030959 cc Valve RV-cc-212B 2

00618044.5 cc Valve 2-cc-242 2

007251340 cc valve 2-cc-129 1

01012p20 cc Piping l-cc-829 2

001171300 cc Valve 2-cc-58 2

OOU71301 cc:

Valve TV-cc-205B 2

001171302 cc Valve 2-cc-242 2

001171303 cc Va1.ve TV-cc-210A 2

001171304 cc Valve TV-cc-205C 2

0011-71305 cc Valve. 2,.:cc-93 2

  • 001171306 cc Valve 2-cC-:.59 1

906201000 cc Piping 1-RH-E-lA 1

9P29J545 c:c Piping 1-cc-100-151

. £i,,,1 'Cl

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ATTACHMENT 2

SUMMARY

WKPERF P11cking J,ea",f Leaks By Dissassembled+Lapped Vlv Se~t+Diac Ch~ck Valve ~eaks Tightened Plate Bolts Le.ak Packing Tig~tened Packing Gland Pipe To fe 1\\8 II! Broke~ Off Excessiv~ Leakage 0~ PT J6.3B Completed Excessiv~ Leakage On fT*l6.3B Completed Excessive Le11kage On PT 16.3B Repaired

  • Excessiv~ Leakage* On PT 16,3B Repaired Excessive Leakage~ PT 16.3B Completed Repni~ Pipe Cap Threads On Valve Repaired Pipe ~reads Excessive Leakag~ Oµ,PT 16.3B Completed Replace cc Outlet Flange Gasket Tightened Flange Pifl: * 'hole Weld Leak * **.

Resoldered Flange RETSERVD.T 06/23/80 07/02/80

  • 01/26/80 02/19/80 02/18/80 02/17/80 02/ll/80 02/19/80 01/28/80 02/19/80 06/22/79 01/04/80 rt rt P> n

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