ML19260A083
| ML19260A083 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 02/17/1977 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Arnold R METROPOLITAN EDISON CO. |
| References | |
| NUDOCS 7910290705 | |
| Download: ML19260A083 (3) | |
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February 17, 1977 OR 4 Rdg VStello RStuart i
KRGoller AGluckman i
4 TJCarter Docket No.: 50-289 Attorney, OELD I
OISE (3)
RReid GZwetzig GVissing Metropol' tan Edison Company RIngram ATTN: Mr. R. C. Arnold DEisenhut i
Vice President - Generation
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TBAbernathy
,e P.O. Box 542 JRBuchanan Rsading, Pennsylvania 19603
,ACRS_(16)_
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Gentlemen:
l By letter dated October 24,1976, you transmitted a non-routine 30 day report No. 75-08, relating to excessive ambient temperatures l
in the Three Mile Island Unit No. 1 Reactor Building.
I i.
l We have been reviewing the condition of sustained high tecperature in the reactor building and your conclusions. In order for us to complete our review, we need the additional information as t
indicated in the enclosure.
Your responses to the questions are requested within 30 days of receipt of this letter.
i Sincerely, j
... ef 1
u.
I Robert W. Reid, Chief Operating Reactors Branch #4 i
Division of Operating Reactors
Enclosure:
Request for Additional Information i
I t
cc w/ enclosure:
See next page I
l 1479 279
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Metropolitan Edison Company cc:
G. F. Trowbridge, Esq.
Shaw, Pittman, Potts, & Trowbridge 1300 M Street, N. W.
Washington, D. C.
20036 GPU Service Corporation Richard W. Heward, Project Manager Thomas M. Crimmins, Jr., Safety and Licensing Manager 260 Cherry Hill Road Parsippany, New Jersey 07054 Pennsylvania Electric Company Mr. R. W. Conrad Vice President, Generation 1001 Broad Street Johnstown, Pennsylvania 15907 Mr. Weldon B. Arehart, Chaiman Board of Supervisors of Londonderry Township 2148 Foxiana Road Middletown, Pennsylvania 17057 Miss Mary V. Southard, Chaiman Citizens for a Safe Environment P. O. Box 405 Harrisburg, Pennsylvania 17108 Government Publications Section State Library of Pennsylvania Box 1601 (Education Building)
Harrisburg, Pennsylvania 17126 Chief, Energy Systems Analyses Branch (AW-459)
Office of Radiation Programs U. S. Environmental Protection Agency Room 645, East Tower 401 M Street, S.W.
Washington, D.C.
20460 U. S. Environmental Protection Agency Region III Office ATTN: EIS COORDINATOR Curtis Building (Sixth Floor) 6th and Walnut Streets Philadelphia, Pennsylvania 19106 479 2%~
REQUEST FOR ADDITIONAL INFORMATION THREE MILE ISLAND UNIT NO. 1 DOCKET NO. 50-289 1.
The temperature gradients during normal operation of the plant are in general slowly increasing functions of time. Therefore, the additional creep of concrete has usually the time to relieve part of the temperature stresses.
Please indicate therefore:
a.
whether the effect of the increase of concrete creep due to additional thermal stresses has been considered in the analysis, b.
whether the Young's modulus of elasticity for concrete Ec has been adjusted to take care of this effect.
2.
Indicate with precision what load combinations have been considered in the analysis, especially whether toraado loads, seismic loads, etc. have been assumed to act simultaneously with the thermal gradients.
3.
Indicate the effect of higher operating temperature on the liner.
We are particularly concerned about a possible buldging effect on the liner particularly at areas of penetrations, both during normal operation and imediately after a postulated LOCA.
Therefore, please provide your analyses displaying stresses and deformations and the results of your inspections during the high temperature conditions.
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