ML20099C742

Forwards Sargent & Lundy Response to Observation Rept 8, Rev 1,re Separation of non-Class 1E Components from Class 1E Dc Power Source

ML20099C742
Person / Time
Site:	Clinton
Issue date:	11/14/1984
From:	Victor H ILLINOIS POWER CO.
To:	Parkinson G BECHTEL GROUP, INC.
References
F-0994, F-994, NUDOCS 8411200047
Download: ML20099C742 (6)

Text

a, :. <

'4 e

g eL40-84(11-l'4)-L On sg

_ l

=8G 150b'

+

~

lAllikOl8 POWER COMPANYI

^

~~

[j:. -,

~

(

C'i cumics Pcaen sTAricN. P.o. scx s7s. cusicN. WNcl$ 61N71

'~

November _:14s.1984:

A t

Mr. Gordon L._ Parkinson.-

.Bechtel-Power Corporation.

~

. Fifty Beale Street.

. San Francisco, CA 94119

Dear Mr. Parkinson:

Enclosed is S&N s response to Observation Report Number-8, Rev. 1.

This' response has been reviewed-by; Illinois' Power.

. Sincerely yours' l*

h S'f

^

'N. R. Victor

Manager, Nuclear Station. Engineering-DW/1m -

cc: See Attached Distribution List e

e d

i 'l 8411200047 4g g'4 PDR ADOCK 0 461 A

'PDR 4

y:

nw _

..~ ~

w

>;, y 8

gn (SAR 9EIYT W1UffIME

4 m

l f a:

X :stn.T E E R 5 3(

=.

-,oo...o....-

A, es sAst Monnot sints?

~'

m; c. +siosa :

uin....aooat 8"ecaso, unois sooos '

4n va see.m*

• swa e,o.as,.near

~

~ SLMI-13921 '

-Date s !!ovenhor 5,1984 Project No'.- 4536-51,;-53:

m zIllinois-Power' Company rClinton PoweraStation.

Unit 1.

FIndependent. Design Review.

observation"and Resolution Reports.

'Mr. J. D. Geier Assistant to Vice President Illinois Powar Company

.500 South 27th Street Decatur,'2111nois 62525

.y 4

Dear Mr. Geier:

Enclosed is a copy of-the below listed Resolution Re4 orts with tho -

proposed resolution (Items 5 and 6). completed.by Sargent & Lundy:

Resolution Report Number 8, Revision 1

~

We are also enclosing a copy of the corresponding Observation. Reports for completeness.

Please review our proposed resolution and, if you concur, sign Item 7 of the Resolution Report and forward the report to the independent reviewer.

Also, please return a copy of the signed Resolution Report to Sargent t ' undy for our records.

Yours very truly,

'T O d ' p.A

.n R. C. Heider RCHand Project Manager Attachment - all recipients D. P. Hall E. L. Branch H. R. Victor B. A. Erler F. A. 'Spangenberg (originals)

W. G. Schwartz L. E. Ackmann/W. A. Chittenden L. R. Stensland W. G. liegener H. S. Taylor E. V. Abraham R. A. Witt R. X.JFrench R. B. Johnson J. M. McLaughlin M. J. Shewski

.H. M. Sroka D. K. Schopfer 9

,,y,

.4

. +. - +

8

s.

~ - -

~

) ;.. e V. :.;

C' I w

t Jnb 15478433 OBSERVATION REPCRT

+

- File No..

OS File Revision No.-

0 Date 5eot. 25. m 4 1

.1.

Level I classification of Observadon:-

Not significant to safety

" Recommendation for resolution" T Additional information required *See 5, Committee

_Significant to safety, send to Level 2

- 2.~

Structure (s). systes(s), or compor.ent(s) involved:.

125 y de distribution' system, safety related control center undervoltage

^

relay and ground detection circuits 3.

Description of Observation:.

- Circuits to' the tuo non-safety related (flSR). components' (undervoltage relay -

'($R) ground detector recording voltmeter)'of the.125 y de safety rela and device (fuse) ectuated by fault current. There is a discrepancy with FSAR.

~

Section 8.1.6.1.14 unich specifies that circuit breakers actuated by fault current are used as isolation davices only when two devices are.in series j

on the same circuit.

-.b 4

Significance of Observation:

The 125 y de pc+rer systen is a Support systen for. the Class 1E ac power systms. Since the ceaeponents tre NSR, internal fault in the components during 03E could degrade the 53 tus.

5.

Rectmendation for resolution (optional):-

$41, should provids an explanation of why the discrepancy occurred, and an assessment of its safety significance. St.t. should justify the adequacy of the circuit design to meet the design ccanitment.

MLL. A mv.,

%&A

.. si,-tures teve n 4evi. u - t.e ggg R J u lb. GL

"/J" 4.M at

)

0166C e

i

y

"y N[n&,p

~

n.

\\

~

1 r:-

n,,-

s f

~f' ?

CLINT0kPOWERSTATION l,

s

~ Job 15478-003

+

y

~

RESOLUT10N REPORT 3

,cr +

File'No.-

-08i y

File-Revision No.'

1 di

~ Date November 5.1984

~

,e 1; Resolution by Leve1~

li Internal Review Committee

.e a

2. iClassification of Observation::

Not valid,(see continuation sheet)

"a.

Not significant to safety ss >

b.

. c... T Additional information required d.

Significanttosafety; f

s

3. ' Program resolution is:-

s. -

Closed iten'

.b. T Action to be taken by Reviewee r/G

~

d'..A1 -

4.

Review Comittee signatures:

M b.

% k N 'c k b Mu es LW.

\\(.;

5.

Reviewee proposed resolution:

a. Description of proposed resolution:

(See Continuation Sheet)

b. Basis of proposed resolution:

(See Continuation Sheet) 6.

Revieweeresponsereportsignedpy t.ngineer ; --

Date

/h WY

_ Date

'/

~i Manager

[_Date /hgh et 7.

Illinois Power Co. a view:

f

/

7 I

C 0166c.

t; : %=.#r me w

j k; j @ D x.-

w A

, m

-. =

si

=,

n,.

~

7

. C!.nautfM,:ER STi410ll c, ;

Aob;15478-003' 4

'~'

RdOWTIW REPORT'.

(continuation sheet)

's-Jih b. -

8 l'ile T.evistor, ilo.

1

=04te Movemb_er ' 5, 1384' e

Q:

- Sa.

Descrtiption of Proposed Resolution:

Sargent's Lundy has reviewed the application;and has determined-

~

that a." discrepancy" does not exist.

The separation of the non-Class lE components-from the Class lE-DC nower= source isa' achieved by -the application of one fuse each in the positive anu negative legs of tne ungrounded :DC' circult:as shown on., -

. Saroent & Lundy Drawing I:03-lDC00, Sheet ' 6.

- 4 es 6

4 E

e S

e-e q

9 t

4-S O

y i

e g

e 9

s 9

+

{

o 6

+

G i

4 6

4 e'e B

8 g

g

(

0 0

+

e 9

0007C h

e 6

.u.

m

a-- --

~

g y

k *.

y Q

,L40-84(11-14)-Li

, e-8G 150br 4

3 L

Clinton Power Station 9

^

IndependentDesigqRhview-

Standard Distribution List Director of Nuclear Reactor Regulation Richard'J. Goddard. Esq.

Actes? E E~ h 7Chsef*""'" m N (Licinking Brf.nch' No'." 2 ""*N"""h J Office of the Legal Director U. S. Nuclear Regulatory Commission

Division of Licensing Washington, D.C.

20555

. U. S. Nuclear Regulatory Commission Washington, D.C.

20555 Don Etchison Director,' Illinois Dep'artment of James G._Keppler Nuclear Safety-

-Regional Administrator 1035 Cuter Park Drive Region III Springfield, Illinois 62704 U. S. Nuclear Regulatory Commission 799 Roosevelt' Road Allen Samelson,Esq.

Glen Ellyn Illinois 60137 Assistant Attorney General

' Environmental Control Division

' Byron S'.esel Southern Region Clinton Licensing' Project Manager.

'500 South Second Street Mail' Code 416 Springfield, Illinois 62706 U. S. Nuclear Regulatory Commission Washington, D.C.

20555 Jean Foy Spokesperson, Prairie Alliance Fred Christianson 511 W.' Nevada

• Mail Code V-690 Urbana. Illinois 61801 NRC Resident Office Clinton Power Station Richard Hubbard R.R. #3, Box 228 MHB Technical Associates Clinton, Illinois 61727 1723 Hamilton Avenue Suite K James L. Milhoan San Jose, California 95125 Section Chief. Licensing Section Quality Assurance Branch Gordon L. Parkinson Office of Inspection and Enforcement Bechtel Power Corporation Mail Stop EWS - 305A Fifty Beal Street U. S. Nuclear Regulatory Commission P. O. Box 3965 Washington, D.C.

20555 San Francisco, California 94119 Richard C. Knop Roger Heider Section Chief Sargent & Lundy Engineers Projects Section 1-C 55 East Monroe Street U. S. Nuclear Regulatory Commission Chicago, Illinois 60603 799 Roosevelt Road Glen Ellyn, Illinois 60137 I

~

. --