ML20003C964
| ML20003C964 | |
| Person / Time | |
|---|---|
| Issue date: | 05/19/1980 |
| From: | Fabic S NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| To: | NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML20003C956 | List: |
| References | |
| NUDOCS 8103180928 | |
| Download: ML20003C964 (6) | |
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UNITED STATES f,j NUCI. EAR REGULATORY COMMISSION yy wAsamcTom o.c.20ssa
.o kU f 1960 To Thost on the Attached List Gentlemen:
During the previous meetings of the Advanced Code Review Group our consultants expressed a desire to be acquainted with the RES code assessment activities.
Those activities, as you know, are being monitored by the Code Assessment Review Group. We nave therefore decided to hold a joint meeting of the Advanced Code Review Group and the Code Assessment Review Group, on the topic of code assessnient. You are cordially invited to attend this meeting.
The meeting is scheduled to take place right after the ACRS (Advisory Comittee on Reacter Safety) ECCS Subcomittee meeting, to give the opportunity to the ACRS members and consultants to also become updated on our code assessment work and to avail ourselves of their counsel.
The ACRS-ECCS Subcomittee meeting will take place in Idaho Falls, Idaho, on June 24-2:5. Consequently, the joint meeting on code assessment is scheduled to 1.ake place on June ~26 and 27,1980, also in Idaho Falls, Idaho. The notification about the meeting place in Idaho Falls and transportation wiil be posted in the Westbank, Stardust, and other well known motels.
The meeting agenda is shown as Enclosure 1 of this letter; we think it covers all areas of mutual interest. Other Enclosures to this letter present some of the material that will be covered during the morning session of June 26.
You will note in the agenda that time was allotted for discussion and critique of that material, after its presentation. The Enclosures 2 and 3 will give you the opportunity to study this material a'iead of time and prepare coments for their discussion at the appropriate time. Tables of assessment cases for the BWR code are still under preparation. Titey will, however, be covered at the meeting.
Wr have also requested BHL, DIEL and LASL to send to each of you a copy of
'neir reports on TRAC assessment activities performed prior to January 1980.
These reports should reach you by the middle of June, at the latest.
The Enclosure 2 is a " reprint" of the lecture notes that cover the code assessment strategy. The code assessment plans were first discussed during the last year's meeting of the Code Assessment Review Group. At that time l
the meeting participants voiced mixed feelings regarding the proposed choice of the key indicators for quantitative assessment. For example, coments were made that there were too many of them, too many tir.d to timing of occurrence l
l 8103180 93g L
To Those On Attached List 2
of certain processes, and not enough of them related to the small break phenomena. The choice of the " key results" shown in the Enclosure 2 considered these comments. The new list will, no doubt, generate additional comments. We must make an all out effort to come to an agreement, during the Idaho meeting, concerning the acceptable manner of code assessment. Your help will be greatly appreciated.
Sincerely, h
^
S. Fabic, Chief
?.nalysis Development Branch Division of Reactor Safety Research
Enclosures:
as stated
A Addressees of Letter Dated D. F. Ross, NRC/NRR L. S. Tong, NRC/RES S. Hanauer, NRC/NRR S. Fabic, NRC/RES l
J. Norberg, NRC/SD N. Zuber, NRC/RES L. Shotkin, NRC/RES l
F. Odar, NRC/RES W. C. Lyon, NRC/RES P. Andersen, NRC Consultant C. L. Graves, NRC/NRR P. Norian, NRC/NRR G. Birkhoff, Harvard Univ.
P. Griffith, MIT A. Henry, MIT
~ -~~-~~
R. Lahey, RPI S. Levy SLI F. Marble, Cal. I. Tech.
K. Miller. 'Iniv. Calif., Berkeley V. Schrock, Univ. Cal':?., Berkeley C. Truesdell, Johns Hopkins I. Catton, UCLA A. Dukler, Univ. of Houston H. Isbin, Univ. of Minn.
M. Plesset, Cal Tech T. Theofanous, Purdue B. Bingham, B&W T. Dietrick, CE G. Brockett, Intennountain lechnology G. Dix, GE V. Esposito, W R. Tiller, DOE-ID J.
Dearien,
EG&G G. Fee, ORNL J. F. Jackson, LASL W. Katn, BNL J. Vigil, LASL L. Ybarrondo, EG&G 4
a JOINT MEETING OF THE CODE ASSESSMENT REVIEW GROUP AND TF' ADVANCED CODE REVIEW GROUP June 26-27, 1980, Idaho Falls, Idaho AGENDA June 26,1980 9:00 am - Introductcry Remarks.................................L. S. Tong, NRC 9:15 am - Code Assessment Strategy and Code Acceptance Criteri a..................................S. Fabic, NRC 10:15 am - Coffee Break 10:30 am - Test Case Selected for Code Assessment, from (a) PWR related integral, separate effects, and basic experiments.
(b) BWR related integral, separate effects, and basic experiments...............................P. Andersen, NRC Consultant 12:00 pm - Group Discussion and Recommendations Concerning Above Described Topics 1:001xu - Lunch 2:00 pm - Measurements Requirements For Assessrent of Small Brea k LOCA Jodes..................................... F. Oda r, NRC 2:30 pm - Experience Gained in Providing Test Data from l
Small Break LOCA Experiments, including Comparison of measurements made vs, measurements required for code assessment Discussion of test data uncertainties l
Discussion of problems encountered in the conditet of tests i n LOFT facil i ty..................................... J. Li nebarger, EG&G in Semiscal e facility..............................'..L. Leach, CG&G l
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2 4:00 pm - Problems in Modeling of Small Break LOCA Flow patterns in horizontal pipe and their effects on break flow Modeling of reflux boiler mode of heat removal Mixture and/or liquid level tracking Steam generator modeling..........................N. Zrber, NRC 5:00 pm - Adjourn June 97, 1980
- - ~ ~ ~ 9:00 am - TRAC Assessment Results Obtained at BNL..............P. Saha, BNL 9:40 am - TRAC Assessment Results Obtained at INEL.............T. Charlton, EG&G 10:20 am - Coffee Sreak 10:35 am - TRAC Assessment Results Obtained at LASL.............T. Knight, LASL 11 :40 am - RELAP-4/ MOD 6 Asses sment Resul ts......................T. Charl ton, EG&G 12:30 pm - Lunch 1 :30 pm - RELAP-5 As sessment................................... V. Ransc5, EGL3 l
2:30 pm - Group Discussion and Recommendations l
l 2:30 pm - End of Meeting l
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ENCLOSURE - 2 i
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