ML19345G560

Sixth Interim Deficiency Rept Re Pressurizer Heater Sys, Initially Reported on 790105.Qualification Program Will Be Completed in Third Quarter of 1981.Another Rept Will Be Provided by 811030

ML19345G560
Person / Time
Site:	Midland
Issue date:	04/01/1981
From:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, 78-11, NUDOCS 8104070524
Download: ML19345G560 (2)

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// Vice President - Projects, Engsnerneg 0

.} and Con,tructwn General o ffices: 1945 West Parnell need, Jackson, MI 49201 * (517) 788-04f 3 April 1, 1981 Mr J G Keppler, Regional Director ' @g"f Office of Inspection and Enforcement '7 g y . g%

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Region III hs, 799 Roosevelt Road W G'\Ngy 3 Glen Ellyn, IL 60137 ,'

0 MIDLA3D FROJECT -

DOCKEI' NOS 50-329, 50-330 (' x$

PRESSURIZER HEATER SYSTE:! A '5h FILE: 0.h.9 23 UFI: 73*10*01, 02311(S)

References:

S H Howell letters to J G Keppler, Same

Subject:

(a) Hove h-79, dated January 5,1979 (b) Hove-91-79, dated March 16, 1979 (c) No Serial, dated June 8,1979 (d) Hove-241-79, dated September 7,1979 (e) Hove-103-80, dated January 29, 1980 The referenced letters were interim 50.55(e) reports as is this letter.

In reference (e), it was forecasted that the qualification of the heaters and connector asse=blies to the requirements of IEEE Std 323-197h, "IEEE Standard for Qualifying Class 1E Equipment for Nuclear Fover Generating Stations,"

and IEEE Std 3hh-1975, "IEEE Recce= ended Practices for Seis=ic Qualification of Class lE Equipment for Nuclear Pcver Generating Stations" would be cc=pleted in the first quarter of 19o1. It is now forecasted that the qualification program vill be ecmpleted in the third quarter of 1981. The scope of the qualificatien program has been increased and the design and manufacture of the connector asse=bly tock longer than anticipated as detailed below:

a. The environmental qualification procedure and test equipment has been modified to include a new design basis condition, which is uncovering of pressuri::er heaters as a result of the postulated taximum overcooling event.

b. The qualification procedure has been refined and test equipment has been modified to allov more accurat.e si=ulation of postulated high te=perature conditions which occur during r.ain steam line breaks.

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Scrial 11962 78-11 #6 c.

The first-of-a-kind connector assembly design vent through several iterations and a prototype was not available for supporting completion of a first quarter test progra..

Bechtel is responsible fer precuring and installing the remainder of the affected the third equipment and is now forecasting completion of this installation by quarter of 1982.

Another report, either interic or final, vill be provided by October 30, 1981.

PET /lr

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CC: Director of Office of Inspection & Enforcement Att Mr Victor Stello, US:GC (15)

Director, Office of Management Information & Progra: Control, USIIRC (1)

RJCook, USNRC Resident Inspector  !

Midland Nuclear Plant (1) I I

CBechhoefer, ASL3 GALinenberger, ASL3 FPCowan, ASL3 AS&L Appeal Panel M4 Cherry, Esq

!Ginclair CRStephens, USNBC WDPaton, Esq, USNRC FJKelly, Esq, Attorney General Sh' Free =an, Esq, Asst Attorney General GTTaylor, Esq Asst Attorney General WhBarshall GJ1::rritt, Esq, T:rt:LJ

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