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COH1p2Hy Susscc7 HIDLAND PROJECT CWO 7020 -
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NRC SITE TOUR AND OBSERVATION OF TEST PITS File: 0460.2 Serial: (JC-4138
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- Attendees CSKeeley, P14-408B DBMiller JJZabritski, P14-416
- Bechtel and Consumers attendees only.
I.
Individuals Present:
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Sherif S. Afifi Bechtel Assistant Chief Soils Engineer R. E. Lipinski DSS /NRC J. P. Knight DSS /NRC Daniel M. Cillen DSS /NRC C. A. Hunt P. A. Martirez Consumers Power Executive Civil Engineer
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- A. J. Boos Bechtel Project Manager
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- R. J. Cook Bechtel Project Field Engineer Resident Inspector /NRC
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- T. E. Vandel (Entrance only)
US NRC Region III Lyman Heller US NRC NRR T. E. Johnson K. Dhar Bechtel Chief Civil / Structural Engineer T. C. Cooke Bechtel Supervisory Engineer D. E. Sibbald Consumers Power Project Superintendent K. Wiedner Consumers Power Senior Crastruction Advisor
'*D. Horn Bechtel Engineering Manager Consumers Power Quality Assurance Group Supervisor / Civil' R. M. Wheeler Consumers Power Civil Section Head
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II.
Discussion Tour Comments A.
The individuals from the NRC were extremely interested in' cracks in the Auxiliary Building, Service Water Building, and Diesel Generator Building _
Hany questions were asked regarding differential settlement.
'Ihey seem '
to be under the impression that there was a great deal of building settle-ment other than the Diesel Generator Building and that large cracks exist somewhere on the site. We continually had to reiterate the fact that remedial actions were based on soil borings which showed questionabic material and not settlement problems.
Mr. Lipinski, in particular, was very interested in why we had cracks and analysis regarding same.
B.
During the tour it was apparent that the NRC's questions were oriented towards seismology aspects. They were also interested in whether or not we had re-reviewed the different seismic conditions in the light of our
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concrete backfill revisions for the Auxiliary Building wing walls ~,
etc., since the addition of concrete could cause new re, actions and forces requiring reanalysis. It was noted that the concrete backfill would be separated from the structures by styrofoam and not tied to the structures.
The HRR alluded to possibly more stringent carth-quake requirements."
C.
When observing the test pits, Mr. Heller expected more sand in the
" random fill".
utilities and ne.t to buildings.I'. was noted that sand was used primarily around D.
Mr. Heller appears to be of the view that the simpler engineering fix.on the service water overhang, such as concrete backfill as op-posed to more complex remedial action, would stand a much better chance of passing review, due at least partially to the fact that much of the available manpower in Washington was involved with Three Mile Island and also because simple straightforward engineering prac-tices will be much easier to discuss in any hearing process.
The NRR was informed that piling at the Service Water structure was only for vertical load and that no moments were involved. It appears that possibly Mr. Knight's staff has been reduced from about fifty to near eight,with the forty people being tied up on Three Mile Island activ-ities.
There will be a corresponding cutback in the normal amount of licensiag activities that will be undertaken by his staff over the next several months.
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E.
NRR noted that they should receive copies of any Diesel Generator (total site related) natcrial that directly from the licensee.
is being transmitted to Region III It also appears that Mr. Knight is more interested in resolving the Midland fill problems in the near future on a "real time baeis" as opposed to later review and approval func-tions such as might be found in going the FSAR route.
(Note: Consumer Power Company has been attempting for weeks to arrange a meeting with NRR but it was not until the week of June 4,1979 that we were able to set a meeting date with them of July 10, 1979.) ile recognized that L
presently the licensee was involved in answering the same or possibly similar questions on three fronts, namely the I&E questions, 50.54f
'ficial to all parties to consolidate these areas. responses and future FSAR During the tour it also appeared that in the future NRR may become much more deeply involved in the details in all licensing aspects than they have in the pa t s.
F.
It would appear that we should provide more rationale and better argu-ments for etc. during the seismic event. support of duct bank and pipes and man holes, valve pits, We have to verify or prove that duct
_ banks, for example, will not shear during the carthquake.
c Mr. Heller was of the opinion that our responses on the safety aspects concerning the borated water storage tank lines will have to be extremely con-servative, and that at this point in time for our responses to be accepted, ne would be inclined to'say that questionable material should f
be removed and fixed rather than' going through some cocepicx explanation as to why it was " acceptable as tis" since this was a Category One item which would be required during the postulated accidant conditions.
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Cencrally, the NRR personnel appeared to find the information gathered during the tour and observation of the t'est pits to be of value and the type of information which would expedite their decision making process.
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/ CDmp3Dy Medtsed Proinct; P.o. Som 1963, Midland, MEMean 4064o. Aree Code 517 6334951 July 6, 1979 Mr. R. L. Castleberry Bechtel Associates Professional Corporation P.O. Box 1000 Ann Arbor, MI 48106 HIDLAND PROJECT CWO 7020 -
STAINLESS STEEL PIPE ATTACK File: Bl.7 Serial: CSC-4198 Recently a 6" section of stainless steel pipe, partially buried in the area of the condensate tanks, was noted to have pitting and stains.
A section of the pipe was cut off and sent to our Trail Street Laboratory for analysis.
Preliminary indications are that this pitting may be due to an electro-chemical,
attack.
The stain was reported to be high in calcium and silicon with small peaks of sulfur, chloride, potassium, titanium and copper.
this point we do not know whether the soil itself has initiated the' prob-At lem or whether something was spilled on the pipe.
However, the soil is being questioned. Since excavation or examination or replacement of buried stain-less steel pipe at this site would have extensive commercial implication and possibly HRC Regulatory involvement it is requested that your office set up an immediate investigative program c,oncerning the soils with an outside lab-oratory.
Our Trail Street Lab may not have the capability of doing the soils analysis.
By copy of this letter to Mr. J. F. Newgen, it is requested that he immediately check to see whether or not anything containing the above aientioned material ceutd have been inadvertly spilled on the pipes. Please contact our Mr. Derk J.
Voksi should you have any questions on this subje c t.
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T. C. Cooke s
Project Superintendent TCC/bd 4
CC: RCBauman JLCorley CSKeeley JFNewgen
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