ML20059G527

Attachment 3,page 28 to Exam Rept 50-373/OL-93-01 for Both Units

ML20059G527
Person / Time
Site:	LaSalle
Issue date:	01/12/1994
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20059G484	List: ML20059G481 ML20059G527
References
50-373-OL-93-01, 50-373-OL-93-1, NUDOCS 9401240209
Download: ML20059G527 (1)

Text

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ENCLOSURE.3 i'

FACILITY POST EXAMINATION REVIEW COMMENTS AND NRC RESOLUTION /

R0 No. 95/SR0 No. 96 (1,00)

QUESTION:' The following conditions exist:

The "A" loop of- shutdown cooling is being placed in service.

-The LPCI suction valve (F004A) has been closed.

The Shutdown Cooling Suction Valve-(F006A) has been opened.

An inadvertent high drywell pressure signal (1.69 psig) occurs.

Select the statement that describes the expected LPCI system response.

a. The LPCI suction valve will open 'and LPCI will inject using:

both the suppression pool and the reactor vessel as water sources.

b. The Shutdown Cooling Suction Valve will close, the LPCI suction valve will open and LPCI will' inject.

c. The suction valves will not realign and.the RHR pump will not start.

d. The RHR pump will start and will pump water from the Shutdown Cooling Suction to the vessel through the LPCI injection valve.

ANSWER: d.

REFERENCE:

RHR System' Description, Ch 39, pages 14 & 30, section 11.1 and-Ill; RHR System Description, Ch 39, EK0 9; Reactor Recirculation System Description.

K/A 203000K410 (3.9/4.1)

FACILITY COMMENT:

Condition 3 does not state the F008 and F009 valves.are open. Operators could-assume these valves were closed causing the RHR pump not to start. As a result,' distractor c. could also be correct.

^l NRC RESOLUTION:

Accept' facility comment, c. and d. are' correct answers.

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.9401240209 940112 PDR ADOCK OS000373K

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