ML20087P795

Interim Part 21 Rept Re Linear Converters Furnished by Pacific Air Products.Initially Reported on 840213.Vendor Investigation of Possible Causes of Excessive Wear Underway. Next Rept by 840730

ML20087P795
Person / Time
Site:	Nine Mile Point, Perry, Catawba, Byron, Braidwood, Surry, Clinton, Midland, 05000000, Marble Hill
Issue date:	03/08/1984
From:	Mangan C NIAGARA MOHAWK POWER CORP.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
REF-PT21-84 8139, PT21-84-247, PT21-84-247-000, NUDOCS 8404090375
Download: ML20087P795 (8)

Text

/

.6,js NUMOHAWK Y NIAGARA NIAGARA MOHAWK POWER CORPORATION /300 ERIE BOULEVARD WEST, SYRACUSE, N.Y.13202/ TELEPHONE (315) 4741511 March 8, 1984 (8139)

Mr. R. W. Starostecki, Director U.S. Nuclear Regulatory Commission Region I Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Re: Nine Mile Point Unit 2 Docket No. 50-410

Dear Mr. Starostecki:

Enclosed is an interim report in accordance with 10CFR50.55(e) for the p(roblem concerning linear converters furnished by Pacific Air Products Company 55(e) 07).

This problem was reported via telecon to S. Collins of your staff on February 13, 1984.

Very truly yours,

/fLaAWLA C. V. Mangan3 Vice President Nuclear Engineering & Licensing CVM/TL:ja Enclosure xc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555

/

T h

8404090375 840308 PDR ADOCK 05000280 S

PDR II L

f

'.4 O.e NIAGARA M0 HAWK POWER CORPORATION NINE MILE POINT UNIT 2 00CKET NO. 50-410 Interim Report for a Problem Concerning Linear Converters Description of the Problem

• The. problem pertains to the linear converters supplied by Pacific Air Products Company.for damper operation used in diesel generator building HVAC system design.' The dampers are provided with electrohydraulic actuators.

The converter unit converts the linear (push-pull) motion of an actuator into rotary motion.

A problem concerning these linear converters was reported by Pacific Air Products' Company to the Nuclear Regulatory Commission under 10CFR21 (copy attached).

' The matter is still under investigation and a final report will be submitted by July 30, 1984.

+

f

.A

n. 2. 2. g-C 10CFR PART 21.- NOTIFICATION OF CONCEP.N i'

'This ' report is submitted by:

~

'.5

~

P ACIFIC AIR.PR0bUCTS CO..

3133 W. Harvard Street P.O. Box 5277 Sa.nta Ana, CA 92704-I t

Louis R. Hess, President

~

~

_y.

u.r s-BACKGROUND Pacific Air Products Co. has received from the Edgewater -

i; Generating Plant (Non Nuclear) a _ linear converter unitAnalysis of ~ the wear.

i. :-

-which shows signs of excessive wear.

t

.nd a determination of its cause is underway at the presenT f

the b.rass shaft guides on the input and output sha ts.

ime.

CONCERN.

The linear converter is a mechanical device that converts

'the. linear (push-pull) ' motion of an ITT Electro-hydraulicPacific Air Pr actuator into rotary motion.

supplied approximately 768 of these linear converters since 1978 mounted to ITT actuators on 10 nuclear plant projectsA list of these and three non nuclear projects.

attached.

(See Attachment "A".)

Some of the linear converters are used in safety-related HVAC f

While Pacific Air Products Co. does not have any the evidence of a generic defect in the linear converter, systems..

possibility of such a defect warrants informing the users

'of this product.

This notification is intended to assist the users in theAn inspection inspection of the units in their possession.(See Attachment "B".)

procedure is attached.

l

,__.-.-,.y

.+,-._p.

.,_m.,.._

,,,,.,,,-.,,._,.w-.

._,w,,,%%___mm7__m5,-

r.-

=

• i.

(2)

~

(.

.c ACTION Pacific Air Products Co.- is presently investigating the possible causes of the excessive wear to the linear converter.

4 -

A' report of this investigation will be issued within 90 days.

If yo'u have any questions, please contact Mr. James Dodson or Mr. Willtam Nagurski.

a

/

_/t _,

.,,.,... ;, s.

g, fg.,,

.f. -.

r.

/v LouisR..Heds

~

. President

- ~ -

t gig p&

- l

~ ~

~

i ames P. Dodson

.,irector of Quality Assurance

=

='

1[17/84

dg e

g I

+

e-c-

3

.r,-

r-v*'~+r-v

- ' = -

• +e*='---'

,*.,1 ATTACHMENT "A" UTILITY AND POWER PLANTS WITH LINEAR CONVERTER UNITS UTILITY POWER PLANT

' NO. OF CONVERTERS

~

Commonwealth Edison Co.

Byron Nuclear Station /

165 h-~

~-

~.

i Braidwood Nuclear'Sta W.

157

~ '

Commonwealth Edison Co.

L, S'_

Public Service Companf

. Marble Hill Nuclear.

- 185

~

1

'. '. ~.

.+ -

Generating Station 4:

.of Indiana e,

., 7.y y.:

.x.

..po

....~

Clinton Nuclear. Station V.

106 L'

Illinois Power Company

.r E Niagara Mohwak Power Nine Mile Point Unit 2 ~-

12-Corporation g,',. j t

..... :i; Virginia Electric &

Surrey Power Station G' '

6 i

',7..

..,.' - i' Power Company

' Catawba Nuclear StationN 35

~

, uke Power Company

. 7 Cleveland Electric Perry Nuclear Station ~(

52 I:

Illuminating Co.

'.p. ;g:7

~ 3,

~

~

.g

~

_y

. Midland Power ' Station 7

2l Consumers Power Company Wisconsin Power & Light Edgewater Generating Plant 31

~

Wisconsin Power.& Light Columbia Generating Plant 4

1 Exxon Nuclear Idaho, Inc.

6th Calcined Storage Bins 1

l' (INEL) p*

/

e

f"

^

• f ATTACHMENT "B"

~

(,

LINEAR CONVERTER INSPECTION PROCEDURE i.'

/

~

. PURPOSE To determine if excessive wear is visible on. linear converter 7

components.

PROCEDURE

~

.y.

.

p.-,,

. a :.

~

J.

1.

Inspect actuator to linear converter. mounting and coupling.

All connections. should be tight r

and aligned.

Visually. inspect the linear converter input

-2.

shaft (this is the 3/4" diameter rod that is

'. f.

connected to the ITT actuator.)

The input shaf t passes through brass shaf t guides at the Be top and bottom of the linear converter.

sure that the input and output shaf ts on the linear. converter are:

$I A.

Clean and free from dirt.

B.

Unpainted.

Lubricated with either grease or C.

medium grade oil.

If possible, energize the actuator and observe 3.

The action should be the linear converter.

smooth, with no binding of part's.

IF SUSPECT UNIT IS IDENTIFIED 1.

Note damper I.0. number and size of damper.

2.

. Note actuator Model Number and I.D. number.

Note actuator mounting position - horizontal 3.

or vertical.

~

4.

Note date of initia,1 service.

L

[

,,1

• .s (2) e

..t TRANSMIT INFORMATION TO:

PACIFIC AIR PRODUCTS CO.-

3133 W. Harvard Street

~

- P.O. Box 5277 Santa-Ana, CA 92704 Attention:

Mr. James Dodson

-J Di. rector of ' O.Jali ty Assurance Telephone:

714/557-1710 O

.~.

s..

. ~..y % '..

m s '.. %

M

.i

,p e

e e

m 1

9 e

l i

4 e

d 4

p.

4 v

h e

1 4

y

.J

^ -~

~

^

u..;

.~

.~

3 t,wsy

- v - - -

.s.

,;. u umw m

qwx

' ~

y~-

,.m:_

w.

-. a; 4

~

' ' - ~ ~ ~_M.

.~

h_ __

• ~

i

,u h

e

?

n

• • .) ~

~~

• N$5-

~

~

.IN$'-

Lc Ab.*kh.g>'d" 'cgc 7)3 ige-

• j

..?;

~ iQ 44:nT4: ~

v.1

- c '-

i

=. % Cf.p; R.\\.,.~t j-e, =7D.

'p.

.- 4. '.-

.r e got z.c

.:a.y).G,,;. n 9,,

.-2 ;-

M " ? ye ~,_. w....

is >~.*

• h y r +-- : - mm- =

=--

De

~

- __n---.

y. :..

j ml...

. u ;c. -

y r-i_

_.e LINEAR CONVERTER o

O P.'

s m

a m.

,,_,,..~.._v.

,p.-

-