ML19259D689

Affidavit Attesting That Significant Design Change Must Be Made by Applicant,Contrary to Info Disclosed in Psar,Fes, SER & Hearing Transcripts.Certificate of Svc Encl

ML19259D689
Person / Time
Site:	Skagit
Issue date:	08/30/1979
From:	Stensby D AFFILIATION NOT ASSIGNED
To:
Shared Package
ML19259D681	List: ML19259D680 ML19259D689
References
NUDOCS 7910260253
Download: ML19259D689 (5)

Text

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SEP 14197S >-- 4 Gk UNITED STATES OF AMERICA NUCLEAP, REGULATORY COMMISSION

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BEFORE THE ATOMIC SAFETY AND LICENSING APPEAL B0 d In the Matter of )

PUGET SOUND POWER & LICLT ) DOCKET NOS. STN 50-522 COMPANY, r.t al., STN 50-523 _

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(Skagit Nuclear Power Proj ect, Augus t 30, 1979 Units 1 and 2) )

n/FIDAVIT OF DAVID STENSBY STATE OF WASHINGTON) ss COUNTY OF K I N G)

I, David Stensby, being first duly sworn, upon oath, depose and state as follows:

Tha: I live at 721 Lake Washington Boulevard South Seattle, hashington 98144 That frem May 1974 to January 1976, I was e= ployed by Engineer-ing Corpar tien of America, which provided engineers to Puget Pcwer on a temporary basis. I reported directly to Puge: Power Management and functioned in the sate nanner as c_ rect employees of that company. 7 was assigned to review the design of the Skagit Nuclear Power Projec:, nore specifically, the nechanical engineering of the Circulating Wa:er and the Slowdown Systems. As reflec:td in Section 9.2.12.2 of the ?SAR, 3echtel criginally designed the 31cwdown System ficw to be 1/11th of the Evaporation ra:e in :he Cooling Tewars. This .ould canse the Circulating Water System to opera:e at 12 cycles of concentration. Tha: is, any minerals found i212 136 7 9102602L 5 3

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i P102 DRl3hl in the =ake-up water from the Skagit River would be 12 times as concentrated in the c. culating water system. I understand that the zoning agree =ent between Puget Power and Skagit Cotmty reflects this limitation.

During the years 1974 and 1975, subsequent to printing of the PSAR and drafting of the zoning agreement, Dames and Moore perfo =ed an extensive water quality study. The results of this _

established that silica in the Skagit F.iver exceeded 10 ppm. Mith the original 12 cycle system, this would bring silica concentration above 120 ppm. This fact, when reviewed against Bechtel's cri-ginal design criteria, proved unacceptable.

I info =ed =y supewisor, who in turn relayed this info =ation to Bechtel's Proj ect Engineering Staff. I was info ced, by was of personal coc:=unication from =y supervisor, that Bechtel had agreed to redesign the system for 7 cycles of concentration.

The new design called fc,: a blowdown flow which is _/6 of the evaporation rate, or an 83". increase over the original design.

Section 9. 2.12.2 of the PSAR gives the =aximum rate of blowdown as 1400 gpm. This being equivalent t.c the original 12 cycle design, does not reflect the planned update.

The end result of the design change, on water discharged n the Skagit River, is an 83" increase in total heat content, and a similar increase in cuantity of chemicals, =ost notably chlorine  ?

and residual chlorine.

In late 1375, I became privy to operating data for oil refiner-Les on the Skagit. This data led me to believe that not only 12 cycles of cencantration, but the revised design of 7 cycles of concentracien is unrealistically optomistic. S.ere are 1212 J37

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significant similarities between the cooling systems of the oil refineries and the :ioposed nuclear plant. Although the oil refineries =ake use of nalpful ch ma' additivas, precluded by Puget's above-=entioned zoc'.vg ag- ee=ent, they w v i having trouble operating at 7 cveles ;f co .tcration. Tnis infor=ation I then ec=municated to my superiors.

Shortly after my presenting the above information, .ly employ =ent at Puget Power was ter=in.ted. For this reason, I am not privy to the latest internal developments for design of the Circulating 'Jacer Systes and Slowdown System.

I can state that my recent review of the PSAR, Final Environ-mental != pact State =ent, Safety Evaluation Report, and transcripts of licensing proceedings has disclosed no indication whatsoever of the design change from 12 to 7 cycles of concentration.

In July 1979, I felt it =y duty to ce=municate this infor=ation to SCANP and its attorney, which I did, since I believe it important.

DATEb this 30 day of [k , 1979.

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h- i-DArd STE.NS3? , g s

SU3SCRI3ED and S'40F3 to b fcre = this ,p">Way of

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. NOTA 43Y .UBLIC in and for the

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of 'Jashingten, residing at Adap ,

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005-74 8/24/79 / 'S -

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& VYY$?* 6 UNITED STATES OF AMERICA Q NUCLEAR REGULATORY COMMISSION f ,gg {

BEFORE THE ATCMIC SAFETY AND LICENSING APPEAL BOARD In the Matter of )

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PUGET SOUND POWER & LIGHT ) DOCKET NOS. STN 5 0-522 COMPANY, et al., ) 50-523

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(Skagit Nuclear Power Project, )

Units 1 and 2) )

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CERTIFICATE OF SERVICE I tereby certify that copies of:

AFFIDAVIT OF DAVID STENS3Y m

dated Aueust 30, 1979, have been served on the folicwing by dep~ositing the same in the United States mail, pcstage

/2.

. prepaid, on this 6 day of Sectember , 1979.

Valentine B. Deale, Esq. , Chairman Docketing and Service Section Atomic Safety and Licensing Board Office of the Secretary U.S. Nuclear Regulatory U.S. Nuclear Regulatory

. Commission Commission 1001 Ccnnecticu t Avenue N.W. Washington, D .C. 20555 Washington, D .C. 20036 Richard L. Black, Esq.

, D r. Frank F. Hooper, Member Counsel for NRC Staf f .

Atomic Safety and Licensing Board U.S. Nuclear Regulatory School of Natural Rescurces Commission ,

University of Michigan Office of the Executive Legal  :

Ann Arbor, MI . 48104 Director i

- Washington, D, C. 20555 Gustave A. Linenberger, Member Atomic Safety and Licensing Scard Nicholas D. Lewis, Chairman U.S. Nuclear Regulatory Energy F acility S ite Evalu ation Ccmmission Council

/~D Washington, D .C. 20555 820 East Fif th Avenue Olympia, Washington 98504 Certificate - 1 1212 J39

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. ?00R DMG Richard M. Sandvik, Esq., Russel W. Busch Assistant Attorney General Evergreen Legal Services Department of Justice 520 Smith Tower 500 Pacific Building Seattle, Washington 98104 520 S. W. Y amhill Portland, Oregon 97204 Thomas Moser Deputy Prosecuring Attorney Robert Lowenstein, Esq. Skagit County Courthouse Lowens tein, Newman, Reis & M t. Vernon, Washington 98273 Axelrad 1025 Connecticut Avenue, N.W. Warren Hastings Washington, D.C. 20036 Portland General Electric Co. -

121 S.H. Salmon S treet James W. D u rh am, Esq. TB 13 Portland General Electric Co. Portland, Oregon 97204 121 S.W. Salmon S treet TB 17 Portland,' Oregon 97204 CFSP and FOB E. S tachon & L. Marbet 19142 S. Bakers Ferry Road Boring, Oregon 97009 Canadian Consulate General Peter A. van Brakel Vice-Consul 412 Plaza 600 6th and S tewart S treet Seattle, Washington 98101 F. Theodore Thomsen Perkins, Coie, Stone, Olsen

& Willi ams 1900 Washington Building Seattle, Washington 98101 Alan P. O' Kelly Paine, Lowe, Cof fin, Herman

& O' Kelly 1400 Washington Trust Financial .

Center Scokane, Washington 99204 - ,

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i RCGER M. LEED .

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Certificate - 2 1212 040

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