ML19256D288
| ML19256D288 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/21/1971 |
| From: | Ross D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Deyoung R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7910170797 | |
| Download: ML19256D288 (2) | |
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UNITED STATES
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,"g ATOMIC ENERGY COMMISSION J-
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- WASHINGTON, O C.
20545 I
April 21, 1971 R. C. DeYoung, Assistant Director for Pressurized Water Reactors, DRL THRU: Charles G. Long, Chief, PWR Project Branch No. 2, DRL
/
MEETING WITH > TROPOLITAN EDISON COMPANY ON THREE MILE ISLAND UNIT 1 (DOCKET NO. 50-28 We met with representatives of Metropolitan Edison Company on April 15, 1971 to discuss the LOCA dose calculations for Three Mile Island Unit 1.
A list of attendees is enclosed.
Mr. Miller of Met-Ed discussed the plant construction schedule which would lead to fuel loading by November 1972. He prefers to have our ef forts completed by the end of 1971, so that the hearing process can commence. This would require:
ACRS letter August 1971 Notice September 1971 Prehearing November 1971 Hearing January 1972 Mr. Miller stated that downtime for Met-Ed, for Unit 1 at full capaci is estimated to be worth about $250,000 per day.
He is concerned that a reduction in the allowable leak rate (from.2% to.1%) could impose incremental increases in plant non-availability.
Dr. Morris said dat we are changing our procedures regarding early notice of intent ta issue an operating license.
Mr. Miller said that he is concerned with our evaluation of thiosulfate and meteorology, in that he thinks we are being unduly conservativa.
W. Lowe stated his concern that undue conservatists might push the 2-hour dose close to the 300 rem, and then the adequacy of the 3C0 rem as a criterion might be successfully challenged.
1450 237 7910170[I/
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.R. C. DeYoung Dr. Morris stated the results of our current meteorology evaluations,
justifying a use of Pasquill "F" conditicn and 0.6 m/see windspeed.
He said that we were working on the B&W topical reports concerning thiosulf ate and might be substantially complete in a few months.
Lowe said that the staff evaluation of teteorology =ay not have been conservative in the past, on other sites.
G. Burley stated that he was in the process of reevaluating the effectiveness of thiosulfate; he expects to be complete in several months. We will go to Lynchburg soon to use our input data in conjunction with B&W's spray code. This will be coordinated with Met-Ed.
Dr. Morris suggested that the leak rate might be initially set at 0.1% per day, and later we and Met-Ed could reevaluate the desirability of.2% per day.
It appears that we will be in disagreecent with Met-Ed for the June ACRS meeting. We said that we would continue our review.
me, nwood F. Ross PWR Project Branch No. 2 v sion of Reactor U censing L st tendees Distribution:
Docket Fil d -
N Compliance (2)
DRL Reading DRL & DRS Branch Chiefs PWR-2 Reading D. F. Ross P. A. Morris F. W. Karas F. Schroeder R. W. Klecker T. R. Wilson E. Markee R. S. Boyd W. Nischan R. C. DeYoung G. Burley D. Skovholt E. G. Case, DRS R. R. Maccary 1450 238
R 3
s
. List of Attendees AEC/DRL D. F. Ros.;
C. G. Lont G. Burley E. Markee W. Nischan P. A. Morris Met-Ed & Consultants J. Thorpe - GPU J. MacMillan - B&W J. Miller J. Bachofer W. Lowe - PLA 1450 239
.