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Comments on Task 1:qualifications of Vent Header Sys (Qualifications of Make Up Tank Sys)
	ML19221A628
Person / Time
Site:	Crane
Issue date:	04/14/1979
From:	Lawroski N; Advisory Committee on Reactor Safeguards
To:	Levy S; INDUSTRY ADVISORY GROUP
References
	TASK 1, TASK-1, NUDOCS 7905230471
	Download: ML19221A628 (1)
	v • d • e

e April 14, 1979 2:00 !*.M.

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To:

S. I,ci y From:

N. Lawroski Subj ect : Task I - Qualifications of Vent lie.ider System (Qualifications of Make-up Tank System)

NP 222 was jus.t put into service.

This instrument samples

. the exhaust from the auxiliary building ahead of the filters.

A strip chart recorder is also hookad up in the control room.

Eased on HPR 3240 the background maybe about 20 mn/hr. Any signal unless quite high may be masked by background.

The new stack monitor is also now functional. This unit is i

i in a low background area and is probably a better instrument h

even though the samples are diluted by a factor of 2 as

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cocipared to the total flow rates of air from the auxiliary building and the stack.

The make-up tank as of 12 Noon 4/14/79 was at 6 psi.

It had been ::ised from 4 psi since 8:00 A.M.

There was no indication of change on HPK 3240.

We will continue to col'ect data.

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ML19221A628