ML19296C222

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Submits Comments on Rept Re Sys Interactions.Draft Was Well Done.Precise Definition of Sys Interactions Is Necessary. Tree Used in Atmospheric Relief Model May Not Be Complete
ML19296C222
Person / Time
Issue date: 01/26/1980
From: Fischer D
Office of Nuclear Reactor Regulation
To: Angelo J
Office of Nuclear Reactor Regulation
Shared Package
ML19296C199 List:
References
REF-GTECI-A-17, REF-GTECI-SY, TASK-A-17, TASK-OR NUDOCS 8002250408
Download: ML19296C222 (1)


Text

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NUCLEAR REGULATORY COMMISSION

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JAN 2 61980 NOTE T0:

J. Angelo, A-17 Task Manager FROM:

D. C. Fischer

SUBJECT:

COMMENTS ON SANDIA'S REPORT ON SYSTEMS INTERACTIONS Following are my comments on Sandia's draft report.

In general, I thought that the draft was rather well done.

1.

Section 1.3 - This section is supposed to say what a " systems inter-action" is; it does everything but state to the reader the precise, intended definition.

I think that this is extremely important to the report, since I found while working with other people on inter-actions, that everyone had their own different definition.

2 Section 1.4 - I found the first paragraph of this section confusing, especially the second sentence.

I think some more words are necessary to explain things like " meaningful realm"??

3.

Section 2.2, second paragraph - I found the second paragraph, starting on page 2-5 confusing.

I think I know what Sandia is trying to say from previous discussions with them; however, I think it would be difficult to fcilow for the uninitiated.

Al so " combination" shoul d be pl ural.

4 Section 2.4.2, RHRS used in the atmospheric relief mode - This tree may not be complete.

If there were no component failures, what happens when the refueling water storage tank supply is exhausted?

Is this still " success" with respect to a DHR system?

s 5

Section 4.0 - On page 4-2, top of page, I thought that justification was weak, i.e. missiles could be sources without high pressure pipe ruptures.

6 Section 5.1.3, page 5-17, third line of first paragraph - For sake of clarity, add wor- " primary" before system..." control the primary system inventory...."

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