ML20247R217

Forwards Final Safety Evaluation Re LER 87-20 Supporting Util 881122 & 890407 Submittals Re Interactions of Plant Protective Sys & Steamline Rupture Detection/Isolation Sys W/Control Sys

ML20247R217
Person / Time
Site:	Fort Saint Vrain
Issue date:	05/26/1989
From:	Heitner K Office of Nuclear Reactor Regulation
To:	Robert Williams PUBLIC SERVICE CO. OF COLORADO
Shared Package
ML20247R222	List: ML20247R217 ML20247R226
References
TAC-69264, NUDOCS 8906070174
Download: ML20247R217 (3)

Text

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May 26, 1989 y-A D;cket.No. 50-267

- Mr. R. 0. Williams, Jr.

Senio'r Vice President,. Nuclear Operations Public Service Company of Colorado 4

Post Office Box:840 Denver, Colorado 80201-0840

SUBJECT:

SAFETY EVALUATION ON LER 87 INTERACTIONS OF-l FORT ST. VRAIN PLANT PROTECTIVE SYSTEM AND STEAMLINE

. RUPTURE DETECTION / ISOLATION SYSTEN WITH. CONTROL SYSTEMS a

(TACN0.69264)

. e have reviewed your submittals dated November 22, 1988 and April 7, 1989 1

W

.concerning interactions between the steamline rupture detection / isolation.

system (SLRDIS),' the plant protective system (PPS) and the control system at:.

Fort St. Vrain. Your letters were in response to our requests for additional information dated September 20, 1988 and January 12, 1989.-

We have enclosed our safety evaluation on this. subject. Our concerns about I

potent.ially undesirable interactions between SLRDIS, PPS and the' control system for certain control valves are resolved.

Sincerely, I

/s/

Kenneth L. Heitner, Project Manager 1

Project Directorate - IV Division of Reactor Projects - III, i'

IV, V and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

i As stated cc w/ enclosure:

See next page DISTRIBUTION 1pocketifyea NRC PDR Local PDR PD4 Reading G. Holahan L. Rubenstein J. Calvo F. Hebdon P. Nocnan Project Manager OGC-Rockville E. Jordan B. Grimes S. Newberry ACRS (10)

PD4 Plant File DOCUMENT NAME:

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May 26, 1989 j

Docket No. 50-267 Mr. R. O. Williers, Jr.

Senior Vice Presiddnt, Nuclear Operations Public Service Company of Colorado Post Office Ecx 840 Denver, Colorado 80701-0840

SUBJECT:

SAFETY EVALUATION ON LER 87 INTERACTI'ONS OF FORT ST. VRAIN PLANT PROTECTIVE SYSTEM AND STEAMLINE RUPTURE DETECTI0fi/ISOLATI0tl SYSTEN WITH CONTROL SYSTEMS

.(TACNO.69264).

We have reviewed your submittals dated November 22, 1988 and April 7,1989 ccmcerning interactions between the steamline rupture detection / isolation system (SLRDIS), the plant protective system (PPS) and the control syster, at Fort St. Vrain. Your letters were in response to our reccosts for. additional information dated September 20, 1988 ar.d January 12, 1989.

~ We have enclosed our safety evaluation on this subject. Our concerns about potentially undesirable interactions between SLRDIS, PPS and the control system for certain control valves are resolved.

Sincerely,

. b.s sb NL

[

)'

Kenneth L. Heitner, Project itanager Project Directorate - IV-Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation Enclosurei As stated cc w/ enclosure:

.See next page e

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ins

' i J-1Mr. R. O. Williams, Jr.

E Public Service Company of Colorado Fort St. Vrain cc:-

I Mr.'D. W..Warembourg, Manager-Albert-J. Hazle, Director f

Nuclear Er:gineering Division Radiation Control Division L

Public Service Company Department of Health of Colorado 4210' East lith Avenue P..'O. Box 840 Denver, Colorado : 80220~

Denver, Colorado 80201-0840-Mr. David Alberstein, Manager

.Mrs Charles H. Fuller.

Fort St. Vrain Services Manager, Nuclear. Production GA International Services Corporation and Station Manager-Post Office Box 85608 Public Service Company of Colorado San Diego, California 92138

-16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Mr. H. L. Brey, Manager

. Nuclear ~ Licensing and Resource-

.Mr. P. F. Tomlinson, Manager

. Management Division: '

Quality' Assurance' Division Public Service Company of Colorado Public Service Company of Colorado P. O. Box 840 16805 Weld County Road 19-1/2 Denver, Colorado 80201-0840 Platteville, Colorado 80651'

+

-Senior Resident Inspector Mr. D. D. Hock

U.S. Nuclear Regulatory Commission President and Chief: Executive Officer =

P. O. Box 640.

Public Service Company of Colorado Platteville, Colorado. 80651

' Post Office Box'840 Denver, Colorado - 80201-0840 Kelley, Standfield & 0'Donnell ATTN:- Mr. J. K. Tarpey Commitment Control Program

.Public' Service Company Building Coordinator

. Room 900' Public Service Company of Colorado 550 15th Street 2420W.26thSve.~ Suite 100-D Denver, Colorado 80202 Denver, Colcrado 80211 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Chairman, Board of County Commissioners of Weld County, Colorado Greeley, Colorado 80631 Regional Representative Radiation Programs Environmental Protection Agency 1 Denver-Place 1

999-18th Street, Suite 1300 Denver, Colorado 80202-2413 i

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