ML17298B357

Summary of 840822 Meeting W/Util & Army Corps of Engineers at Site Re Effects of Water Leakage from Temporary Const Lines on Auxiliary Bldg Foundations.Agenda & Attendee List Encl

ML17298B357
Person / Time
Site:	Palo Verde
Issue date:	10/05/1984
From:	Licitra E Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8410180057
Download: ML17298B357 (12)

Text

Docket Nos.:

50-528, 50-529 and 50-530 APPLICANT:

Arizona Public Service Company FACILITY Palo Verde, Units 1, 2 and 3

SUMMARY

OF MEETING TO DISCUSS EFFECTS OF WATER LEAKS ON FOUNDATION STABILITY A meeting was held on August 22, 1984, at the Palo Verde site with representatives of the applicant.

The purpose of the meeting was to discuss information relating to the water leakage during 1981 and 1982 from temporary lines under the auxiliary buildings for Palo Verde.

Enclosure 1 is the agenda for the meeting and the attendees are listed on Enclosure 2.

An exit meeting was held on the morning of August 23, 1984 at the applicant's office in Phoenix, Arizona.

The meeting is summarized as follows.

~Sama r A tour of the facilities was made on the morning of August 22, 1984 to look at the areas in each of the three units where water leakage was known to occur from underground temporary construction lines before they were grouted.

The purpose of the tour was to permit representatives of the Corps of Engineers (COE), who are, assisting the NRC staff in the evaluation of this issue, to obtain a better understanding of what occurred.

h j In the afternoon, the NRC staff and COE held discussions with representatives of the applicant and Bechtel covering the agenda items in Enclosure l.

A number of documents relating to the foundation evaluation had been made available to COE prior to the site visit.'hese include the following:

1.

Geotechnical investigation report by Ertec Western, dated March 1982 2.

Engineering evaluation report'y Bechtel, dated May 1982 3.

Grouting'report by Bechtel, dated 1982 4.

Responses to NRC staff, questions, APS letter dated June 18, 1984, with attachment 5.

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The purpose of the afternoon discussions was to obtain a better understanding of the erosion problem and covered the following topics:

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The construction sequence of placing the temporary lines and completing the structures.

Remedial work completed after discovery of the eroded soil.

Results and evaluation of cone penetrometer study.

Basis for conclusions on foundation stability of Radwaste and Control Buildings.

Settlement records and future settlement plans.

Problems with drilling and grouting through completed structures

.foundations.

Potential effects of dynamic loading from machine/equipment start-up on future foundation stability.

With regard to the specific topics identified as item 5 of the site visit

agenda, the following information was provided to the NRC staff and COE.

The applicant stated that no seepage from the broken lines was noted on the ground surface at any of the three plant units.

The grout take at Unit 3 that was in excess of estimated volumes of eroded soil likely filled openings that had not been detected.

At the exit meeting the following morning, the staff informed the applicant that COE felt it had sufficient information to complete its assessment of the matter.

Several other documents, which provide background information relating to the water leakage, would be requested of the applicant.

(The documents were requested by letter dated August 30, 1984).

The staff also stated that the COE evaluation would be completed prior to fuel load of Unit l.

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Enclosures:

1.

Site Visit Agenda 2.

Meeting Attendees cc:

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Palo Verde Mr. E.

E.

Van Brunt, Jr.

Vice President - Nuclear Projects Arizona Public Service Company P. 0.

Box 21666

--Phoenix, Arizona 85036 Arthur C. Gehr, Esq.

Snell 5 Wilmer 3100 Valley Center

Phoenix, Arizona 85073 Mr. James M. Flenner, 'Chief Counsel Arizona Corporation Commission 1200 West Washington

Phoenix, Arizona 85007 Charles R. Kocher, Esq. Assistant Counsel James A. Boeletto, Esq.

Southern California Edison Company P. 0.

Box 800

Rosemead, California 91770 Ms. Margaret Walker Deputy Director of Energy Programs Economic Planning and Development Office 1700 Hest Washington Phoenix, Arizona 85007 Mr. Rand L. Greenfield Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Resident Inspector Palo Verde/NPS U.S..Nuclear Regulatory Commission P. 0.

Box 21324

Phoenix, Arizona 85001 Ms. Patricia'ee Hourihan 6413 S. 26th Street

Phoenix, Arizona 85040 Regional Administrator Region V

U. S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Kenneth Berlin, Esq.

Winston 5 Strawn Suite 500 2550 M Street, NW Washington, DC 20037 Ms. Lynne Bernabei Government Accountability Project of the Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009 Ms. Jill Morrison 522 E. Colgate Tempi, Arizona 85238

4 1

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Enclosure 1

Site Yisit Agenda August 22 and 23, 1984 1..

Tour of all known exit points for each leak 2.

Observe condition of fill in (a) areas where saturated by leakage and (b) undisturbed areas 3.

Discussions with people familiar with design, construction, leakage

problems, foundation conditions, and grouting 4.

Documents requested for diycussion include:

(a) direct statements or reports from the people that reported the deficiency (b) as built geologic and soils maps (c) foundation reports describing geology, soils, and foundation design 5.

Specific topics for discussion include the following:

(a)

In response to staff question 3,

a statement is made that only one exit point occurred for leakage (into the seismic gap).

Where was the seepage noted on the surface?

(b)

During the grouting program, it is noted that the largest excess grout take occurred at Unit 3.

No eroded fill materials were observed at the reported exit point for this leak, What are the potential consequences of undetected erosion of fill in this and other areas?

(c)

No discussion was provided regarding settlement of equipment hatch or potential loss of support under this structure or the adjacent wing of the auxiliar'y building and other nearby structures.

Explain why this was n'ot necessary considering the leakage that exited into the equipment hatch and the possibilities of undetected erosion.

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Enclosure 2

Meeting Attendees Geotechnical Meeting August 22, 1984 APS Kent Jones Art Gehr Joe Truillo Bill Hurst R. J.

Kimmel Balll Quinn Bechtel Ken Schechter Mike Wolff Dennis Keith Steve Shepherd Earth technolo Ken Euge Steve Haire Cor s of En ineers John Wagner Robert Ramsey NRC Joseph Kane Manny Licitra

r

MEETING

SUMMARY

DISTRIBUTION Docket No(s-)'-'-50-528/529/530..

NRC PDR Local PDR.

NSIC PRC System LB3 Reading

Attorney, OELD GHKnighton Project Manager EALicitra JLee NRC PARTICIPANTS Joseph Kane Manny Licitra bcc:

Applicant

& Service List