ML19249D627
| ML19249D627 | |
| Person / Time | |
|---|---|
| Issue date: | 08/30/1979 |
| From: | Pickett D Office of Nuclear Reactor Regulation |
| To: | Andrew Hon NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML19249D628 | List: |
| References | |
| REF-GTECI-A-43, REF-GTECI-CO, TASK-A-43, TASK-OR NUDOCS 7909250095 | |
| Download: ML19249D627 (2) | |
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AUG 3 91979 STANDARD DISTRIBUTION Task A-43 Containment Emergency Sump Perfonnance Central Files CSB Reading File S. Hanauer M. Aycock F. Schroeder R. Denise R. Bosnak T. Novak T. Speis P. Check R. Martin D. Pickett J. Kudrick J. Watt D. Eisenhut V. Noonan R. Colmar S. Varga L. Tong, RES R. Di Salvo, RES A. Serkiz, RES g, art" PDR*
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AUG 3 01979 MEMORANDUM FOR:
A. L. Hon, Division of Reactor Safety Research, RES THRU:
W. R. Butler, Chief, Containment Systems Branch, DSS FROM:
D. V. Pickett, Acting Section B Leader, Containment Systems Branch, DSS
SUBJECT:
COMMENTS ON PROPOSAL BY BURNS AND ROE FOR ANALYSIS OF INSULATION DEBRIS GENERATION The Containment Systems Branch has been requested by J. Watt of DSS to review the August 23, 1979 letter from Burns and Roe to you which described their proposed method of accomplishing Tasks 1 & 2 of Task Action Plan A-43,
" Containment Emergency Sump Performance." We have the following coninents.
Task 1 - Detemination of Types of Insulation 1.
Containment drawings showing general plant layout and insulation location should be requested. These drawings, which will be used in Task 3 (Distribution of Debris Resulting from Breaks), will be used to determine the pipe break proximity to physical barriers (e.g., grating, crane wall, refueling pool, etc.) that may inhibit travel of the insulation and debris to the containment sump. Pathways for travel from points of origin to the containment floor can be detemined from these drawings.
2.
The expected operating temperatures and pressure of the enclosed fluid should be identified for each insulated piping system and component. The MEB of DSS has infonned the CSB that this infomation is necessary to predict jet impingement, pipe whip and missile effects.
Task 2 - Generated Insulation - Debris 1.
The Burns and Roe proposal calls for a bounding approach to determine the
-total amount of insulation displaced from a pipe break.
In the attached July 18, 1979 letter, the CSB requested that the bounding approach be eliminated in lieu of a more refined analysis that detennines the amount, nature and travel direction as a function of time of the insulation pieces as they are blown off a pipe. We reiterate our request since we believe that the assumed insulation behavior made for subcompartment analysis must also be verified.
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M30M A. L. Hon,
We recognize that the schedule of TAP A-43 may preclude this concern from being addressed at this time.
If this is the case, we would be interested in seeing this aspect of the issue addressed as either a separate task in TAP A-43 with low priority or as a separate activity within RSR.
D Vk Douglas V. Pickett, Acting Section B Leader Containment Systems Branch Division of Systems Safety
Attachment:
As Stated Distribution:
See attached sheet 1023 lia
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