ML20236X345

Part 21 Rept Re Use of Potentially Unqualified Extension Cable W/Environmentally Qualified Solenoid Valves at Plant, Per 871118 Request.Replacement of GE Cable in Unit 1 Completed During Fall Outage

ML20236X345
Person / Time
Site:	Point Beach
Issue date:	11/25/1987
From:	Fay C WISCONSIN ELECTRIC POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20236X346	List: ML20236X345 ML20236X638 ML20236X643
References
CON-NRC-121, REF-PT21-87, REF-PT21-87-200-00, REF-PT21-87-200-000 PT21-87-200, PT21-87-200-000, VPNPD-87-515, NUDOCS 8712090131
Download: ML20236X345 (4)

Text

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r WISCONSIN Electnc powca coursur 231 W. MICHIGAN. P.o. BOX 2046, MILWAUKEE,WI 53201 (414)277-2345 VPNPD-87-515 JNRC-121 November 25, 1987 U. S. NUCLEAR REGULATORY COMMISSION Document' Control Desk Washington, DC 20555 Gentlemen:

DOCKETS 50-266 AND 50-301 ADDITIONAL INFORMATION ON POTENTIALLY UNQUALIFIED EXTENSION CABLE USED WITH ENVIRONMENTALLY QUALIFIED SOLENOID VALVES POINT BEACH NUCLEAR PLANT UNITS 1 AND 2

'As requested by NRC Region III personnel during a conference call on November 18, 1987, this letter provides additional information regarding the use of potentially unqualified extension cable with environmentally qualified (EQ) solenoid valves at Point Beach.

This letter ie a followup to my letter to you dated September 30, 1987. As requested, a table listing each valve's tag number, functional description, location, normal operating position, safety position, and identification.of those valves used in post-accident sampling is provided in Attachment 1.

Due toL the cost'in confirming similarity between our installed cable and previously qualified GE Vulkene Cable, and the cost of new environmental qualification testing,.we decided for economic reasons to replace that GE cable for which we lack the required ,

EQ documentation. The replacement of.the GE cable in Unit 2 was completed during our. fall: outage and is planned at Unit 1 during a scheduled refueling outage beginning in April 1988.

In order to enhance our justification for continued operation (JCO), NRC Region III personnel requested that we provide documentation that would support the possible qualification of the GE cable. Attached are ccpi'o of two environmental qualification reports on GE Vu2kene Cable. One report documents the environmental qualification testing to the conditions of a BWR plant and the second report tested a similar cable to PWR plant conditions. The latter conditions are more severe than J those postulated for Point Beach. Therefore, we believe that the 1 cable is qualifiable and that the short extension cables still installed on Unit 1 are capable of surviving the harsh l environments resulting from postulated design basis accidents. )

8712090131 871125 PDR ADOCK 05000266 r619(

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NRC. Document Control Desk November- 25,.'1987-

'Page 2 If you have any questions on the above information, please

, contact Mr. R. K. Hanneman of'my staff ~(414/221-2009).

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Very truly yours, g/ .huy C. W.' Fay Vice President Nuclear Power Attachments Copies to NRC Regional Administrator, Region III Resident Inspector

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November - 25,1987

~ Attachment 1-m ENVIRONMENTALLY QUALIFIED SOLEN 0ID VALVES.-

l AT POINT BEACH NUCLEAR PLAMI WITH UNQUALIFIED EXILM5 ION CABLE--

1. -Valves in Containment.

Normal Post

Valve . Oper. Safety Accident

. Number *- Functional Description _. Location Position Position Sampling

'RC430 Pressurizer power oper- 80'el, on top of. C C N ated relief valve air' tha PZR in PZR operator cubicle RC431C Pressurizer power.oper- 80'el. on top'of C- C N ated relief valve air- the PZR in PZR operator cubicle CV313A Reactor coolant pump 26'e1. beneath. O C N seal water return-line floor outside sec.

cont. isolation valve-

. . shield wall air operator CV371A- Reactor coolant letdown 36'e1. overhead 0 C N line isolation valve air outside sec.

operator shield wall CV5958. .S/G blowdown line 46'el, overhead 0 C N isolation valve air outside sec.

operator shield wall CV5959- S/G blowdown line 46'el . over head - 0 C N isolation valve air outside sec.

operator shield wall CV1296 Auxiliary charging .line 8'el. outside sec. C C N cont. isolation valve shield wall air operator HV3200C Cont. atmosphere samp- 66'el. outside O C Y ling line isolation sec, shield wall valve air operator

.HV3215 Cont. purge supply line 86'el, attached C** C N isolation valve air to cont. liner operator HV3245 Cont. purge exhaust line 86'el, attached C** C N isolation valve air to cont liner operator SV951 PZR steam space sample 46'el. outside C C N line isolation valve sec. shield wall air operator I

Normal Post Valve _ .

. Oper. Safety Accident.

Number

• Functional Description Location Position Position- Sampling SV953 .PZR: liquid space sample. 46'el. outside C 'C N line isolation. valve sec. shield wall

~a ir operator SV955 RCS hot leg sample line- 18'el. in "B" loop 0 C Y isolation valve air operator II. = Valves in Auxiliary Buildini

.SV966C . Reactor coolant hot leg- 8'el. #1 lower 0 C Y sample line isolation pipeway-air operator

~

SV959 RHR heat exchanger 8'el. #2 upper C C Y outlet sample line pipeway isolation valve air operators IA3047= ' Instrument air to con- 26'el. #2 upper 0 C Y tainment line isolation pipeway valve air operator IA3048 Instrument air to con- 26'e1. #2 upper -0 C Y

. tainment line isolation pipeway valve air operator.

III. . Valves in Turbine Hall SV480 Main feedwater regulat- 26'el. main feed- C C N ing bypass valve air water control area operator

, SV481 Main feedwater regulat- 26'el main feed- C C N ing bypass valve air water control area operator

• Valve numbers apply to both units (unqualified extension cable on (

Unit 2 has'been replaced)

• • Administratively danger-tagged closed during normal operation l

. Key U Closed 0 = Open Y = Yes N = No 1

L -