ML18038A224

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Forwards Insp Repts 50-220/86-18 & 50-410/86-42 on 860901-30.No Violations Noted.Results of Util Review of Diaphragm Failure in Air Operator of Unit 1 Scram Outlet Valve,Including Plans for Valve Replacement Requested
ML18038A224
Person / Time
Site: Nine Mile Point  Constellation icon.png
Issue date: 11/03/1986
From: Gallo R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To: Mangan C
NIAGARA MOHAWK POWER CORP.
Shared Package
ML18038A225 List:
References
RTR-NUREG-0737, RTR-NUREG-737 NUDOCS 8611110563
Download: ML18038A224 (4)


See also: IR 05000220/1986018

Text

Docket Nos.

50-220

50-410

Niagara

Mohawk Power Corporation

ATTN:

Mr. Charles

V. Mangan

Senior

Vice President - Nuclear

300 Erie Boulevard West

Syracuse,

New York

13202

Gentlemen:

Subject:

Inspection

50-220/86-18

and 50-410/86-4

This refers to the routine inspection

conducted

by Mr. W. Cook and Mr. C. Marschall

of this office on September

1,

1986 to September

30,

1986, at Nine Mile Point

Units

1 and 2, Scriba,

New York.

A summary of the findings was presented

to

Mr. Jones

and Mr.

Roman

and other

members of your staff at the conclusion of the

inspection.

While no violations were noted,

a response

to this letter is requested.

The

enclosed

inspection report identifies

a concern relative to a diaphragm fai lure

in the air operator of a scram outlet valve in Unit 1.

You are requested

to

provide the results of your review of the diaphragm failure including an analysis

of the consequences

of a similar failure in a scram inlet valve and the extent

of the diaphragm material

aging,

including your current plans for diaphragm

replacement.

The responses

directed

by this letter are not subject to the clearance

procedures

of the Office of Management

and Budget

as required

by the Paperwork Reduction

Act of 1980,

PL 96-511.

We appreciate

your cooperation.

Sincerely,

gR~454RLl Sigasd By s

Robert

M. Gallo, Chief

Projects

Branch

No.

2

Division of Reactor Projects

Enclosure:

Region I

NRC Inspection

Report

Number 50-220/86-18

and 50-410/86-42

8611110563

861103

PDR

ADQCK 05000220

G

PDR

OFFICIAL RECORD

COPY

CIR NMP2 86-18/42

0001.0.0

10/31/86 +gal

i l

Niagara

Mohawk Power Corporation

02 NW 1%8

cc w/encl:

Connor 5 Wetterhahn

John

W. Keib, Esquire

T.E.

Lempges,

Vice President,

Nuclear Generation

D.L. Quamme,

NMP-2 Project Director

T.J. Perkins,

General

Superintendent

T.W.

Roman, Station Superintendent,

Unit

1

R.B. Abbott, Station Superintendent,

Unit 2

J.A. Perry,

Vice President,

Quality Assurance

C.G.

Beckham,

NMPC QA Manager

W.A. Hansen,

Manager, Quality Assurance

Troy B. Conner, Jr.,

Esquire

Director; Power Division

Department of Public Service,

State of New York

Public Document

Room (PDR)

Local Public Document

Room (LPDR)

Nuclear Safety Information Center

(NSIC)

NRC Resident

Inspector

State of New York

bcc w/encl:

Region I Docket

Room (with concurrences)

Management Assistant,

DRMA (w/o encls)

Chief, Engineering

Programs

Branch

J. Linville, Section Chief,

DRP

State Liaison Officer (SLO)

RI:

R

.*Mey r/rhl

gX

/,

/86

i

c'

P

L'nville

10/3 (/86

10/3) /86

OFFICIAL RECORD

COPY

CIR NMP2 86-18/42 - 0002.0.0

10/31/86