ML19224B900

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Submits Daily Digest for 790521
ML19224B900
Person / Time
Site: Crane Constellation icon.png
Issue date: 05/21/1979
From: Ross D
Office of Nuclear Reactor Regulation
To: Israel S, Thatcher D, Wilber H
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE), Office of Nuclear Reactor Regulation
References
NUDOCS 7906270156
Download: ML19224B900 (3)


Text

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8 UNITED STATES

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'4 NUCLEAR REGULATORY COMMISSION

{.1 W ASHINGTON. D. C. 20555 j

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,n s, v j May 21, 1979 Note to: Distribution From:

D. Ross, Jr.

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Subject:

DAILY DIGEST FOR MONDAY, MAY 21, 1979 1.

We (i.e., Novak) needs to establish a separate task and identify workers to solve the RCP running " problem". Resource material includes the in-coming from B&W (May 10) and W (May 17). B&W assumes CCW is maintained or reinstated, seal injection'~and return is mcintained or reinstated, certain seal leakage criteria for W pumps, certain emergency vibrathn criteria are used; cavitation is not so important at elevated temp; pump " bumps" should not be more often than hourly. The W response is not so specific. They believe the pump run criteria should not be implemented without consideration and specification of appropriate procedures and precautions. Apparently this concern centered on CCW and seal water, and vibration.

(W says they are developing some guidance).

This iten needs to be resolved this week.

2.

Thadani is to assure that ACRS report #2 (5/16/79) is covered by his two generic reports.

3.

Thadani needs to put into report info from Stolzenburg of May 18, 1979.

4.

Shall we send further TMI-2 scenarios to operating reactors via bulletins?

5.

We have petition from Friends of the Earth on Rancho Seco. See Reid, Heltemes, Novak, Israel, Mazetis if you wish to read.

6.

M. Williams, D. Ross, T. Novak need to discuss whether low pressurizer level is a manual trip omen.

7.

From ACRS recomendations, Heltemes notes need for early disposition of:

a.

natural circulation direct flow ind.

b.

pressarizer heater role c.

subcooling meter d.

hi-range core exit TC.

255 050 7908270/5F 7 O

2-8.

We need to meet promptly with DPC on design for new EFW system.

We need to be able to coment on Millstone 2 TMI stuff at the June ACRS 9.

meeting (a power increase).

W,j D.,. aess, a,.

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