ML20236V468
| ML20236V468 | |
| Person / Time | |
|---|---|
| Issue date: | 07/27/1998 |
| From: | Birmingham J NRC (Affiliation Not Assigned) |
| To: | Coleman T FRAMATOME |
| References | |
| TAC-M96728, NUDOCS 9808030242 | |
| Download: ML20236V468 (3) | |
Text
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I July 27, 1998 Mr. T. A. Coleman, Vice President Government Relations Framatome Technologies, Inc.
P.O. Box 10935 Lynchburg, VA 24506-0935
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION (RAl) ON THE RESPONSES TO l
rat FOR BAW-10199P, ADDENDUM 1, "THE BWU CRITICAL HEAT FLUX CORRELATIONS" (TAC NO. M96728)
REFERENCE:
A letter from T. A. Coleman to USNRC, GR158. doc, Attachment 1, Responses to Request for Additional Information for Addendum 1 to BAW-10199P.,"
February 23,1998.
By the above referenced letter, Framatome Cogema Fuels (I ~ F) submitted responses to a staff request for additionalinformation for Addendum 1 to BAW-10199P. The staff reviewed the responses and has a need for additional information. The additional information requested is identified in the enclosure to this letter.
If you have any questions about this request please contact me at (301) 415-2829 or T. Huang at (301) 415-2867).
Sincerely, Original Signed By:
Joseph L. Birmingham, Project Manager Generic issues and Environmental Projects Branch Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/enet: Mr. Richard. N. Edwards, Director Government Operations Framatome Technologies, Inc.
1700 Rockville Pike, Suite 525 Rockville. MD 2C852-1631 DISTRIBUTION:
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j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 2066Ho01 49... +,o July 27, 1998 Mr. T. A. Coleman, Vice President Govemment Relations Framatome Technologies, Inc.
P.O. Box 10935 Lynchburg, VA 24506-0935
SUBJECT:
REQUEST FOR ADDITIONAL INI'ORMATION (RAI) CN THE RESPONSES TO RAI FOR BAW-10199P, ADDENCUM 1,'THE BWU CRITICAL HEAT FLUX CORRELATIONS"(TAC NO. M9f 728)
REFERENCE:
A letter from T. A. Coleman to UriNRC, GR158. doc, Attachment 1, Responses
{
to Request for Additional Information for Addendum 1 to BAW-10199P,"
I February 23,1998.
By the above referenced letter, Framatome Cor ama Fuels (FCF) submitted responses to a staff
)
request for additionalinformation for Addendu 1 to BAW-10199P. The stsff reviewed the responses and has a need for additionalinformation. The additionalinformation requested is identified in the enclosure to this letter.
If you have any questions about this request please contact me at (301) 415-2829 or T. Huang at (301) 415-2867).
Sincerely.
C%A< s b $
k/m Joseph L. Birmingham, Project Mana>g
/
Generic issues and Environmental Projects Branch Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/ encl: Mr. Richard. N. Edwards, Director Govemment Operations I
Framatome Technologies, Inc.
l 1700 Rockville Pike, Suite 525 i
Rockville, MD 20852-1631 L
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d REQUEST FOR ADDITIONAL INFORMATION (RAI)
ON THE RESPONSES TO RAI FOR ADDENDUM 1 TO BAW-10199P FOR APPLICATIONS TO THE MARK B11 AND MARK BW17 MSM DESIGNS 1.
The response to Question 3 dated February 23,1998, states that no bias was found I
when the B11 and BW17-MSM data bases were analyzed with the BWU-Z correlation, and only the " average levels" were different. Please provide information supporting this conclusion, in the form of l
(a) plots of the BWU-Z correlation results (with F 3, = 1.0 and Fusu = 1.0) for the two l
data bases, showing ineasured-to-predicted CHF ratio versus.nass velocity, pressure, and equilibrium quality at CHF (as already presented in Figures E-1 through E-3 and Figures F-1 through F-3 for the BWU-Z correlation with Fei, = 0.98 and Fu3u = 1.15 in Addendum 1 to BAW-10199P-A).
b) if sets of replicate or near-replicate data points can be identified between the BW17 data base and the B11 data base, and between the BW17 data base and the BW17-MSM data base, present plots with measured CHF as the independent variable versus predicted CHF obtained 1) using the BWU-Z correlation with Fei, = 0.98 and with F,, = 1.0 for each replicate data point common to the BW17 and 811 data bases 2) using the BWU-Z correlation with Fusu = 1.15 and with Fusu = 1.0 for each I
replicate data point common to the BW17 and BW17-MSM data bases 2.
The ova base for the BW17-uiSM fuel design is extraordinarily small (only 76 data points) and of limited range, covering only 1000 to 2400 psia on pressure, and 1.0 to 3.2 2
Mlbm/hr-ft. The extension down to 1000 psia is based on only 3 data points at l
pressures below 1500 psia, and the range of equilibrium quality at CHF is 0.31 or lower, except for a single point at 0.48. What is the intended range of application of the BWU-Z correlation with Fusu = 1.157 If this range of application exceeds the range of conditions spanned by the dr 'a base for BW17-MSM fuel design, what is the justification for this extrapolation?
3.
Report BAW-10229P, referred to in the response to Question 7, is not an approved topical report, Describe the tests done for both the 5-by-5 and the 17-by-17 full spacer grids and the derivation of the form loss coefficients based on the experimental data.
Provide the details to clarify that the Mark B11 spacer grid was tested and the results show that the form loss coefficient based on the experimental data is identical to that of the BW17 spacer grid.
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ENCLOSURE l
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