ML20085A470

Compares B&W & TVA Positions Following 781204 Telcon on Small Break LOCA Analysis.B&W Failed to Evaluate Michelson Rept in Sufficient Detail to Respond to TVA 781204 Telcon Questions

ML20085A470
Person / Time
Site:	Three Mile Island
Issue date:	09/03/1979
From:	GENERAL PUBLIC UTILITIES CORP.
To:	GENERAL PUBLIC UTILITIES CORP.
References
TASK-06, TASK-07, TASK-11, TASK-6, TASK-7, TASK-GB 790803, GPU-0482, GPU-482, NUDOCS 8307060518
Download: ML20085A470 (3)

Text

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• COMPARISON OF B&W AND T7A POSITIONS 70LLOWING.

Drr*FMRER. 4,1978, TELECON ON SMALL mar LOCA ANAT.vSIS .

August 3,.1979 '

e.

B&W Position: As a result of the December 4,1978', talacon, B&W bel' ieved that TVA's t=aba4 a=1 questions outlined in the Michalson report had been resolved and that only d-tation of this resolution was required (see page 2 of Ace =ah==at 1). -

T7A Position: It appeared during the talacon that B&W had not evaluated the M4el.=1=on report in sufficient detail to respond to all TVA's questions in the Deceabar 4,1978, telecon (see Attachments 2,; 3, and 4 for the observations of three telecon participants). Further, B&W indicated they had not perform 4 a detaildd calculation of the small break LOCA event and did not feel such a enle=1-tion was warranted. B&W did note that the NRC was satisfied with the B&W LOCA analyses, 4a-1=A4a: the i

small break case. T7A requested

• documentation of the NRC review and approval of the"small. break LOCA analysis. On December 10,1978, TVA telecopied to B&W a i.,y J.tten statement to clarify its concerns relat-ing to the small break analysis and asked that this stata. ment be considered

• when answering TVA (see Ate =eh==ne 5 for the draft copy). B&W was to respond in writing. .

i

, Additional Observation: During the December 4, 1978, telecon, B&W appeared to lack an underse -d4= as to what the Miah=1=an report was trying to say and ,showed a,reluctsace to find out. Their apparent position was that the B&W.small break analysis had ,been reviewed and .

approved by the NEC and that nothing more was needed. T7A,.tharefora, shifted its t=1=- emphasis from that of trying to obtain specific answers concerning:the report to that of confirming that the NRC/B&W small break analyisis review process might contain answers to TVA's

~

. concerns without a need for further B&W analysis. To thf= and. T7A requested during the telecon that B&W document 1*n a latte. to TVA its

negotiations with the NEC and 4=A4a-ta che availability or related information to T7A for internal review. This request was also included

, in the subsequent telecopy to B&W and extended to include availability to NRC in case TVA chose to solicit their view. B&W has not respondad

.co the documentation request. -

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