IA-87-160, Responds to NRR 770316 Inquiry Re Mark II Pressure Suppression Data.Forwards Rept on Dynamic Loading During Condensation Phase of Blowdown in Bwr,Comments on Need for Full-Scale Tests of Mark II Containment Sys
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.o i NOV 41977 -
i MENORANDUM FOR: L. Rubenstein, Chief .
Research Analysis Section, Program Support Branch, NRR i FRON: S. Fabic, Chief' . !
Analysis Development.8 ranch, RSR-
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SUBJECT:
STUDY OF AYAILABLE DATA ON MARK-II PRESSURE SUPPRESSION' In response to an inquiry made by NRR on March 16,1977 about MARK-II pressure suppression data RSR has' sponsored an independent study,of the
' existing data as to its applicability.'to MARK II. This_ study has been ,
performed by Professor V. E. Schreck from the University of California l and Professor C. Brennen from the California Institute of: Technology.
Their review focused on a large complex of data covering U.S. and foreign licensing and research test programs.: The' data sources reviewed are ~
identified in the report. At the same time a' preliminary cost estimate was prepared by Burns and Roe,. Inc. for the cost-requirement for a full scale multivent test facility for MARK II testing. This report will be
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transmitted to you'under separate cover. l I We are transmitting to you six copies of the two reports on' the data sur- 1 vey. RSR plans to make this topic an agenda item on the next Containment l Code Review Meeting for a review group recosmiendation. l In summary the findings of the ' reviewers are the following:
They consider that a lack of fundamental understanding exists'in the area of steam condensation. They support further study of the avail-able data in conjunction with tests under carefully' controlled con- .i ditions and in reduced scale for better identification of the ba' sic-mechanisms. Testing in full scale is considered less meaningful in :
that such tests would add little to the existing data base. . In. con-junction with further fundamental study, future large' scale' tests ',1f required, could be planned more effectively.
MENZB7-160 PDR l oene
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Mr. L. Rubenstein .
We are transmitting a copy of the reports to the review group consultants.
It would be much appreciated if you could distribute these reports to the NRR members of the Containment Code Review Group.
EriginalSigned By ,
J.Fabic S. Fabic, Chief Analysis Development Branch i Division of Reactor Safety Research l
Enclosures:
as stated cc w/ enc 1: A. A. Sonin, MIT R. Lahey, RPI I. Catton, UCLA DISTRIBUTION Subj Circ Chron Branch RF LS RF LS CY SF CY
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