ML20147B877

Testimony of S.Varga Re Load Combination Methods & the Adequacy of Vessel Supports & Pedestal to W/Stand LOCA & Earthquake Loads,As Stated in ASLB Order of 780908

ML20147B877
Person / Time
Site:	Black Fox
Issue date:	10/02/1978
From:	Varga S Office of Nuclear Reactor Regulation
To:
References
NUDOCS 7810110211
Download: ML20147B877 (6)

Text

j 4r UNITED STATES NUCLEAR REGULATORY COMMISSION

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o WASHINGTON, D. C,20555 To nj

"% , , , g # September 29, 1978

' uBLIC DPm~ Tj' Room Sheldon J. Wolfe, Esq. Mr. Frederick J. Shon Atomic Safety and Licensing Board Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Washington, D. C. 20555 Dr. Paul W. Purdom .

Director, Environmental N Studies Group W NA Drexel University 32nd and Chestnut Street O[.$ @ 7 o d ' _s!Ll M Ma ' %%

7Mqk Philadelphia, Pennsylvania 1910 g; In the Matter of Public Service Company of Oklahoma kA ch c Ylb. 6 Associated Electric Cooperative,

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y,bs Inc. and Western Farmers Electric Cooperative, Inc.

p (Black Fox Station, Units 1 and 2)

Dockett Nos. STN 50-556 & STN 50-557 Gentlemen:

6 This letter is to advise the Atomic Safety and Licensing Board that pursuant to the ruling in Duke Power Company (William B. McGuire Nuclear Station, Units 1 and 2), ALAB-143, 623 AEC 625-26 (September,1973),

new information concerning the Black Fox Nuclear Station site has been reported by Public Service Company of Oklahoma. On September 26, 1978, Public Service Company of Oklahoma notified an NRC Region IV Inspection and Enforcement officer who was present at the Black Fox site of what they termed a " geological anomoly" which had been uncovered during trench-ing operations at the site. Following that notification, the site was inspected by the geologists of PS0 and the NRC's Region IV Inspection and Enforcement Branch.

Telephone conversations between PSO, I&E Region IV, the Geosciences Branch of the NRC, and the Nuclear Reactor Regulation Project Manager were held on September 28 and 29,1978 for a preliminary assessment of the matter.

As indicated in the three enclosed I&E and Staff reports, the anomaly appears to be a depression or dipping in a drywood coal seam and contains some offset which could be an indication of the presence of a fault. No information is currently available as to the capability of the anomaly.

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Public Service Company is now proceeding with more trenching to learn more about the anomaly. The NRC Staff has required that the further trenching be done in such a manner as to assure that the geologic feature will be preserved for further study. Following a more complete trenching of the area, the NRC's Geological Sciences Branch and NRC Regional Inspection and Enforcement geologists will inspect the feature thoroughly.

The Staff will keep the Atomic Safety and Licensing Board apprised of the status of the investigation and will present more information on the matter at the upcoming Radiological Health and Safety Hearings which will be held on October 10-20, 1978.

Since rely ,

e. :

. . (e ; m L. Dow Davis Counsel for NRC Staff cc: Joseph Gallo, Esq.

Michael I. Miller, Esq.

Mrs. Carrie Dickerson Mr. Clyde Wisner Andrew T. Dal ton, Jr. , Esq.

Mrs. Ilene H. Younghein Paul M. Murphy Lawrence Burrell Mr. T. N. Ewing Mr. Vaughn L. Conrad Joseph R. Faris, Esq.

Mr. Gerald F. Diddle Mr. Maynard Human Andreri T. Dal ton, Jr. , Esq.

Dr. M. J. Robinson Atomic Safety and Licensing Appeal Board Atomic Safety and Licensing Board Panel Docketing and Service Section

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STATUS OF " GEOLOGIC AN0MALY" AT BLACK FOX SITE (BLACK FOX STATION UNITS 1 AND 2)

1. About noco on September 27, 1978, I&E Region IV advised the NRR Project Manager that Public Service Company of Oklahoma (the applicant) had discovered a " geologic anomaly" while trenching at the site of its pro-posed Black Fox Station near Tulsa, 0klahoma. No details of the anomaly were known at that time.

2. Early in the af ternoon on September 27, 1978, the NRR Project Manager and representatives of the Geosciences Branch communicated with both the applicant and I&E Region IV concerning the anomaly, The applicant indicated that its geologists were investigating the anomaly and would call us back when more information became available. I&E Region IV indicated that a geologist from the I&E Region II had been dirpatched to the Black Fox site. The Geosciences Branch decided to await more definitive information before sending any representatives to the site.

The applicant was requested and agreed to not disturb further the immediate area surrounding the anomaly.

3. Late in the af ternoon on September 27, 1978, the applicant provided representatives of the Geosciences Branch with preliminary information concerning the anomaly. The anomaly was apparently pointed out to an e inspector from I&E Region IV during a site visit on September 26, '978.

The anomaly was characterized as dipping in a drywood coal seam.

4. On September 28, 1978, representatives of the applicant and I&E Regions II and IV surveyed the trenchings. It was decided to schedule a conference call among representatives of the applicant, I&E Region IV, the Geosciences Branch, and the NRR Project Manager on the morning of September 29, 1978, to discuss the geologist's findings.

5. On the morning of September 29, 1978, the aforementioned conference call was held. Besides the depression in the drywood coal seam, which was apparently not unexpected from bore log information, some offset was observed indicating the presence of a fault. The applicant provided preliminary information concerning the details of the fault. The applicant is proceeding to trench along the various projections of the fault and .to map and photograph the details of both the depression and fault, The Geosciences Branch indicated that it plans to visit the site when the trenching is completed, presumably during the week of October 8,1978, OELD is in the process of advising the sitting Black Fox ASLB of this matter, e

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' NUCLEAR REGULA10RY COMMisslON \

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- WASHINGTON l D. C. 20555

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<  % ',,,# September 27, 1978 Docket fios: STfl 50-556 STil 50-557 FLASH t10TE MEMORAtlDUM FOR: Steven A. Varga, Chief, Light Water Reactors Branch 4 FROM: Cecil 0. Thomas, Project Manager, LWR-1

SUBJECT:

DISCOVERY OF "GE0 LOGIC Afl0f4ALY" AT BLACK FOX SITE (BLACK FOX STATI0ft UtlITS 1 AtlD 2)

This is to advise you that at 11:15 am today (September .27,1978),

Bill Seidle of Region IV called me concerning the discovery of a

" geologic anomaly" at the Black Fox site. Bill told me that Bill hubacek, a Region IV inspector,was at Public Service Company of Oklahoma's (PS0's) corporate headquarters in Tulsa, Oklahoma this morning and was advised by PS0 that during trenching operations at the site, a " geologic anomaly" was discovered in 'an area which is scheduled to be excavated on Saturday, September 30. fio further information concerning the nature of the " geologic anomaly" is known at this time.

Bill Seidle advised me that he had contacted I&E Headquarters and a geologist, Jack Harris of Region II, is to be dispatched to the Black Fox site as soon as he can be contacted (Jack is apparently in the field at a location where he cannot be contacted by telephone). I told Bill Seidle that I would advise the Geosciences Branch and my management of this matter and would get back to him i

concerning the possibility of our sending someone to the site.

l Bill agreed to keep me informed of any.further developments.

eOl0.  ;*cd z:9--

Cecil 0. Themas Project Manager Light Water Reactors Branch 1 Division of Project Management cc: D. Vassallo R. Boyd Ci Stepp, DSE S. Wastler, OSE D. Davis OELD I

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, , - _ PRELIMINARY NOTIFICATION September 28, 1978 PRELIHINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-78-173 This preliminary notification constitutes EARLY notice of an event of I@SSIB[e safety or public interest significance. The information-

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presented is as initially received without verification or evaluation and is basically all tha_t is known by IE staff on this date.

FACIi!TY: Public Service Company of Oklahonn -

Black Fox Units 1 & 2 DN 50-556; 50-557

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SUBJECT:

ANOMALY IDENTIFIED IN EXCAVATION AREA During a site tour on September 26, 1978, the Region IV project inspector was infonned of a geological disturbance which had been identified during the trenching of the main excavation area.

The extent or character of the problem is not known at this time, but appears to involve sufficient past movement to pinch out one or more estab-

! lished coal seams in the area. The licensee's geological consultant, Shannon & Wilson, is investigating and mapping the anomaly.

The Region II geologist has been dispatched to the Black Fox site to inspect and evaluate the extent and significance of the problem. He will arrive in the afternoon of September 28.

There is no media interest at present.

Region IV received notification at 8:30 a.m. September 27, 1978, by tele-phone from the HRC inspector. The information is current as of 3:30 p.m. on September 27, 1978.

Contact:

FADreher, IE x27551 GWReinmuth, 'IE x27551 HDThornburg, IE x28484 Distribution: Transmitted H St h/9 Chairman Hendrie Comissioner Bradford S. J. Chilk', SECY

'. Comissioner Kennedy Corr.missioner Ahearne C. C. Kammerer, CA Commissioner Gilinsky (For Distribution)

Transmitted: MNBBNIN P Bldg J. G. Davis, IE L. V. Gossick, E00 H. R. Denton, NRR Region S. H. Hitnauer. E00 -

J. J. Fouchard, PA SS Bldg __ _ (MAIL)

H. M. Haller, MPA C. V. Smith, NMSS

0. G. Abston, OIA R. G. Ryan, OSP R. Minogue. SD.

H. K. Shapar. ELO m-PRELIMINARY NOTIFICATION

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