ML19263A711
| ML19263A711 | |
| Person / Time | |
|---|---|
| Site: | 05000580, 05000581 |
| Issue date: | 12/13/1978 |
| From: | Tibbitts D Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7901020124 | |
| Download: ML19263A711 (4) | |
Text
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UNITED STATES j
y" NUCLEAR REGULATORY COMMISSION g
,y WASHINGTON. D. C. 20555 OEC 13 N DOCKET N05. STN 50-580 AND STN 50-581 APPLICANTS: OHIO EDISON COMPANY, ET AL FACILITY:
ERIE NUCLEAR PLANT
SUBJECT:
SUMMARY
OF MEETING HELD ON AUGUST 15,1978 WITH OHIO EDISON COMPANY On August 15, 1978 we met with representatives of (1) Ohio Edison Company, (2) Ohio Edison's architect engineers, Gilbert / Commonwealth Companies, for the Erie project (3) the nuclear steam supply system vendor for the Erie project, Babcock & Wilcox and (4) Pickard and Lowe, one of Ohio Edison's consultants. The meeting was held in Bethesda, Maryland and those attending the meeting are listed in the Enclosure.
The purpose of the meeting was to discuss three staff positions taken in the Erie review. The positions were:
1.
We required that the second feedwater isolation valve in each main feedwater line i>e classified as Quality Group B.
2.
We required that when it is necessary to take core samples from 90-day concrete pours, that the average strength of the samples should be equal to or greater than the s pecified strength.
3.
We required tornado missile protection for either the main stean lines (outboard of the isolation valves) or the borated water storage tank.
Quality Group Classification of Feedwater Isolation Valves At the beginning of the discussion we reiterated our position that pending the completion of Task Action Plan A-22, "PWR Main Steam Line Break - Core, Reactor Vessel, and Containment Building Response" we would require that the outboard valve be classified as Quality Group B.
The applicants stated ttat the Quality Group B designation for the first valve is based on the criteria for isolation and preventing leakage from containment. The second (outboard) valve was not necessary for containment isolation, but was needed to assure termination of feedwater flow into the containment for a postulated main steam line break.
The applicants also stated that (1) they were in the the process of procuring these valves and (2) that with the exception of the added documentation for the Class B valves there probably would not be any differences between the two valves.
79010201d
DEC 131978
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After a caucus by the staff and a determination that the applicants were in the process of procuring these valves, we concluded that pending the completion of Task Action Plan A-22 we would accept the applicants design.
Ninety Day Concrete The representatives of GIL/COM went over the references that had convinced them that cylinders cored from concrete pours would show less strength than that present in the concrete. They stated that ACI-359 recognizes this fact by requiring that cored samples have an average strength equal to or greater than only 85 percent of the specified strength for the concrete.
We stated our concern was centered on the need to provide assurance that the concrete strength was adequate. We recognized that the need for taking a core sample may never arise during construction.
Furthermore, we recognized that other non-destructive techniques would be utilized before resorting to tests of core samples. We stated that our position on the core testing could be replaced by the applicants' commitment to provide us with the results of core sanple testing for our evaluation. We would then evaluate the results and take whatever action we deemed necessary.
The applicants agreed to provide the results of such testing.
Tornado Missile Protection The applicants had not committed to either protect the main steam lines outside of containment or borated water storage tank from postulated tornado f
In the meeting the applicants stated tF' based on preliminary missiles.
calculations they tought that they could demonst' that either the thickness of the main steam piping and the possibly the lower portion of the borated water storage tank were sufficient to preclude damage by tornado missiles. Their analyses would be submitted in mid-September 1978. We stated that if they could show this, we wculd consider this open issue as resolved.
).atur, [
Dean Tibbitts Light Water Reactors Branch No. 2 Divison of Project Management
Enclosure:
As stated cc w/ enclosure:
See next page
OEC 13 Y78 ENCLOSURE ATTENDANCE LIST NRC - STAFF OHIO EDISON COMPANY D. B. Vassallo B. Miller J. Knight J. Hultz C. Hofmayer R. Lipinski F. Rinaldi GILBERT / COMMONWEALTH ASSOCIATES V. Benarcya R. Kirkwood G. Clyde F. Rosa J. Legault C. Ferrell D. Perry P. Tam R. DeLoach L. Bell R. Lang K. Campe W. Kessler L. Soffer R. Baer D. Tibbitts BABC0CK & WILC0X F. McPhatter PICKARD, LOWE AND GARRICK, INC.
G. Glei W. Lowe v
Mr. R. J. McWhorter Vice President art 1 " E70 Ohio Edison Company 76 South Main Street Akron, Ohio 44308 cc:
Mr. B. M. Miller Ohio Edison Company 76 South Main Street Akron, Ohio 44308 Mr. William Kessler Commonwealth Associates, Inc.
209 East Washington Jackson, Michigan 49201 Gerald Charnoff, Esquire Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.
Washington, D. C.
20036 Thomas A. Kayuha, Esquire Ohio Edison Company 76 South Main Street Akron, Ohio 44308 Mr. A. H. Lazar Babcock and Wilcox Power Generation Group P. O. Box 1260 Lynchburg,' Vi rginia 24505 Mr. Robert W. Tufts 352 West College Street Oberlin, Ohia 44074
'N Ms. Evelyn Stebbins 705 Elmwood Road Rocky River, Ohio 44116 Mr. Richard E. Webb 2858 One Hundred Eleventh Street Toledo, 0 hic 43611
.