ML17291B147

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Forwards Insp Rept 50-397/95-98 on 950810.No Violations Noted.Insp Identified Conditions That Have Resulted in Mechanical Overspeed Trips of safety-related Steam Turbine Driven Standby Pumps at Other Facilities
ML17291B147
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 12/01/1995
From: Gwynn T
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To: Parrish J
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
Shared Package
ML17291B148 List:
References
NUDOCS 9512060184
Download: ML17291B147 (8)


See also: IR 05000397/1995098

Text

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UNITEDSTATES

LEAR REGULATORY COMMISSIO

REGION IV

611 RYAN PLAZA DRIVE, SUITE 400

ARLINGTON,TEXAS 76011.8064

DEC

I

1995

Washington Public

Power

Supply System

ATTN:

J.

V. Parrish,

Vice President

Nuclear Operations

3000 George Washington

Way

P.O.

Box 968.

MD 1023

. Richland,

Washington

99352

SUBJECT:

NRC

INSPECTION

REPORT 50-397/95-98

This refers to the inspection

conducted

by Mr. C. J.

Paulk

and Ms. L. J.

Smith

of this office on August 10.

1995. via telephone with personnel

from the

Washington Nuclear Project-2 facility.

This initiative was prompted

by

recurring fai lures of safety-related

steam turbine-driven standby

pumps at

several

faci lities in Region IV.

We concurrently performed this inspection at

most Region

IV facilities to better understand

the scope of design,

maintenance,

and testing practices

related to safety-related

steam turbines,

which were supplied

by the Terry Corporation.

We also examined several

aspects

of various experience

review processes

to determine

why similar

failures continued to occur.

On November 9,

1995, at the conclusion of the

in-office review. the findings were discussed

with those

members of your staff

identified in the enclosed

report.

Areas examined during the inspection are identified in the report.

Within

these areas,

the inspection consisted of selective examinations of procedures.

representative

records.

and interviews with personnel.

The combined results

of this inspection for'ach of the Region

IV facilities are documented in the

enclosed

report

and executive

summary.

With respect to your facility, the inspection identified conditions that have

resulted in mechanical

overspeed trips of safety-related

steam turbine-driven

standby

pumps at other facilities.

Specifically. your staff had not

established

a program for routine refurbishment of the turbine governor.

We

encourage

you to review this condition to ensure

continued reliable operation

of the reactor core isolation cooling pump turbine.

We also noted that the

governor valve stem material in use at your plant

may be susceptible to

corrosion-induced sticking.

At the exit interview, your staff stated that

they plan to inspect the reactor core isolation cooling turbine governor valve

stem during the next'utage,

In accordance

with 10 CFR 2.790 of the NRC's "Rules of Practice,"

a copy of

this letter and its enclosures will be placed in the

NRC Public Document

Room.

95i2060i84 95i20i

PDR

ADQCK 05000397

8

PDR

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Washington Public Power Supply

. jstem

-2-

Should,you

have any questions

concerning this inspection,

we will be pleased

to discuss

them with you.

Sincerely.

Docket:

50-397

License:

NPF-21

Enclosure:

NRC Inspection

Report

50-397/95-98 w/attachments

T omas

P.

Gwynn,

ir ct

Division of Rea tor

af

cc w/enclosure:

Washington Public Power Supply System

ATTN:

J.

H.

Swai les.

WNP-2 Plant Hanager

P:0.

Box 968.

HD 927H

Richland,

Washington

99352-0968

Washington Public Power Supply System

ATTN:

Chief Counsel

3000 George Washington

Way

P.O.

Box 968.

HD 396

Richland,

Washington

99352-0968

Energy Facility Site Evaluation Council

ATTN:

Frederick

S. Adair'hai rman

P.O.

Box 43172

Olympi a. Washington

98504-3172

Washington Public Power Supply System

ATTN:

D. A. Swank.

WNP-2 Licensing

Manager

P.O.

Box 968 (Hail Drop PE20)

Richland'ashington

99352-0968

Washington Public Power Supply System

.ATTN:

P.

R. Bemis, Director

Regulatory

and Industry Affairs

P.O.

Box 968 (Hail. Drop PE20)

Richland'ashington

99352-0968

0

0

Washington Public Power Supply

System

Benton County Board of Commissioners

ATTN:

Chairman

P.O.

Box 190

Prosser.

Washington

99350-0190

Winston

8 Strawn

ATTN:

N.

H.

Phi lips.

Esq.

1400

L Street.

N.W.

Washington.

D.C.

20005-3502,

Washington Public Power Supply

System

-4-

E-Hail report to D. Nelson

(DJN)

E-Mail report to NRR Event Tracking System

( IPAS)

.bcc to

OHB ( I EOl )

bcc distrib.

by RIV:

L. J. Callan

ORSS-FIPB

Branch Chief (DRP/ED

WCFO)

Senior Project Inspector

(DRP/E.

WCFO)

Leah Tremper

(OC/LFDCB,

HS:

TWFN 9E10)

Resident

Inspector

HIS System

RIV File

Branch Chief (DRP/TSS)

M.

Hammond

(PAO,

WCFO)

DOCUMENT NAME:

R:N WN2%WN598RP.LJS

To.receive copy of document, indicate in box: "C"

Copy without enclosures

"E" ~ Copy with enclosures "N" = No copy

RIV:RI: EB

RI: EB

LJSmith l$3

CJPaulk*

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D:DRS

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Washington Public

Power

Supply

System

-4

E-Mail report to D. Nelson

(DJN)

E-Hail report to

NRR Event Tracking System

(IPAS)

bcc to

DMB ( IE01)

bcc distrib. by RIV:

L. J. Callan

DRSS-F IPB

Branch Chief (DRP/E,

WCFO)

Senior

Project Inspector

(DRP/E,

WCFO)

Leah Tremper

(OC/LFDCB,

MS:

TWFN 9E10)

Resident

Inspector

HIS System

RIV File

Branch Chief (DRP/TSS)

H.

Hammond

(PAO,

WCFO)

DOCUMENT NAME:

R:N WN2KWN598RP.LJS

To receive copy of document, Indicate in box: "C"

Copy without enclosures

"E" ~ Copy with enciosures "N"

No copy

RIV:RI: EB

RI: EB

LJSmith

L$3

CJPaulk*

C:EB

E

D:DRS

D:DRP

CAVanDenburgh*

TPGwynn

JEDyer

>

D:DRS

TPGwyn

11/

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11/22/95

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