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ADVIS3W. COM.'.ilTTEE ON RE ^.CTOR SAFEGU ARD3 t
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OGG Jcouary 12, 1974 D. Ohrent, C'.u i r ;:-
Grand Gulf S i:::.i:tec GRAND GULF Sti r XI! TEE MEETING, JANUARY 17-1S, 1974 The Grand Gulf Su'rcomittee vill meet at the Ryatt House Hotel,. in Scn Jose, Californic on January 17-18, 1974 to further concider the application by the Mississippi Power and Light Compcny for a permit to construe: Units i and 2 and to inspect General Electric test facilities used to verify containment performance. The tentative schedule is:
Januare 17, 1974 8:30 101 Executive Session (Closed) 9:00 A'.i Meeting with the Mississippi Power and Light Company and the AEC Regulatory Staff (Open) 12:30 ?>
L'2;CH 1:30 R:
Resume meeting with the Mississippi Power and Light Company and the AEC Regulatory Staff (Open) 5:03 7M Visit General Electric test facilitics (Closed) 7:00 FM Recess Januar: ::. li44 8:30 iM Executive Session (Closed) 9:03._*.
Meeting with the Missiscippi Power and Light Cempany and the AEC Regulatory Stcff (0 pen) 12:30 P.'
LL7;CH 1:30 PM Resume meeting wit;h the MLssissippi Powe cnd Light Company and the AEC Regulatory Staff '(Open) 4:30
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Caucus (Closed) 5:00 E!
Su=ation (0 pen) 5:30 ?:
Adjourn 1
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s D. Okrent January 12, 1974 Topics to be discussed incit.S:
1.
Seismic design 3:ses (Thurs::ay morning) 2.
Hydroser. generation and con:rol 3.
tncer: sic:ies in recouc,: potter and paver distribution 4.
Loss of ::a'_:n: accident and ECCS per formance 5.
Potential curbine generated missiles 6.
Reliabili:, of control rod design 7.
Pressure 3 ppression system performcnce 5.
Resolution of SUR generic items 9.
!!atters identified in Regulatory Staff Safety Evaluation Report 13.
Seiscaic design considerations 11.
Environmental considerations at the discretion Topies may ':e added to or dele:ed from the cbove list of :he Sub:0:=1: ee Chairman.
Closed sessions may be held when proprietary ir. formation runt be censidered.
Attendance by the following ACRS me.:J: r; and consul cn:s is cntic!. pated and hotel reservations have been made et the Hyatt 2.:use
- 2. c e l, 1740 !!. F ir s t S t r e e t, San Jose, California for the nights indi:::ed.
D. Okren:
(J an. 16, 17, & IS)
C. U. Solbrir, (Jan. 16, 17 & 13)
S. H. 3csh (J an. 15 & 17)
T. G. Theo ferous (Jen. 16, 17 & 13)
L. *.J. F =
(J a n. 16, 17 6.16)
G. A. Thompson
(!:one)
H. D. Cure:
(:one) 1:. Trifunac (J e n.
16)
D.
P.,
E'tsns (1one)
J. T. Wilson (None)
B. M. Page (None)
Z. Zudans
(?!one)
,/
w John C t;cK1.. ey Senior Staf f Assistri!-
cc:
Listed or Sc e3 u
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. Jar.ua ry 12, 1974 D. Okrent cc: ACRS !:enbers H. D. Cure t D. R. Evcns B. M. P0;=
S. S. Th 1 brick R. W. Shr sy C. U. S o '. r i ;
T. G. Tha:fsnaus G. A. T'.:: psen M. Trifuns:
J. T. Wilson F. Zalouie'.;
Z. Zudcns V. Moore, L R. DeYoung, L W. Butler, L
% %. Owsley, L J. Hendrie, L P. Morris, RO H. Kouts, L R. Tedesco, L a
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GRAND GULF SUBCOn!ITTEE MEETINO, JANUARY 17-18, 1974, SAN JOSE,. CALIFORNIA l
Listed below are specific aspects of the topics to be considered at the Grand Gulf Subcommittee mee:ing, January 17 and 18. Other aspects or topics may be brought up by the Subcommittee or its consultants.
1.
Seismic design bases a.
Descripti:n of the safe shutdown earthquakes b.' Extent of :he New Madrid earthquake zone
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2.
Hydrogen genera: ton and control Bases for hydrogen evolution rate (Regulatory Staf f) a.
b.
Possible mechanisms which could lead to hydrogen generation beyond that calculated by the applicant for a double-ended pipe break (Regulatory Staff and applicant)
Rel.iability of the system proposed for coping with hydrogen (Regu-c.
latory Staf f) d.
Automatic or manual activation of hydrogen control system (Regula-tory Staff and applicant) e.
Capability cf drywell, etc., to withstand various hydrogen burning events (Regulatory Staff) 3.
Uncertainties in power and power distribution (nuclear uncertainty factor) 4 Loss of coolant accident and ECCS performance a.
Evalua: ion of LPCI capability (without any consideration for core spray) (Regulatory Staff) b.
Means to ascertain potential blockage.of core spray nozzles over the reac:or's lifetime (Regulatory Staff and applicant) c.
Degree to which blockage of core spray nozzles is tolerable (applicant and Regulatory Staff) d.
Blowd:vn forces resulting from a LOCA -- any unknowns (Regulatory S ta f f) e.
Independent confirmation of the analyses by the Regulatory Staf f f.
Possible future improvements in ECCS (include flow rate comparisons of the several systems for BWR/4, 5 & 6, and reliability considera-tions (Regulatory Staf f and applicant) 5.
Turbinc =issiles (turbine orientation end possible missile trajectories) 6.
Reliability of new control rod design g.---
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Pressure Suppression System a.
Forces on s true tures above the pool (Regulatory S taf f) b.
Extent to which e::perinental corroboration. is required' (1)
?rior to issuance of a construe:Lon permit (Regulatory Staf f)
(2) 7:10: to some later milestone (Regulatory Staf f)
Possible dyne =ic ef fects in the suppression pool resulting from c.
relief cs'.ee discharge (Regulatory Staf f and applicant) d.
Role cf nrn-condensables and other phenomena in relief valve discharge to the suppression pool (Regulatory Staf f and applicant)
Possible dynamic leads on containment or drywell wall,.etc., from e.
relief ;cl re operation (Regulatory S taf f and applicant) f.
Detailed description of the dynamic phenomenona important to the action of the suppression system in a 14CA (Regulatory Staff and applicant)
Role of non-condensables in item f above (Regulatory Staff and g.
applicant) h.
Effec'ts of solid walls on the results of tests perforced in the seg=ent of a full-scale experimental facility (Regulat.ory Staf f and applicant)
- i. Possibility of pool oscillations permitting an intermittent bypass path for steam from the drywell escaping into the containment.
Are the experi.=ents adequate to study this phenomena or circumferential wave effects?
(Regulatory Staff and applicant)
- j. Role of non-condensables in the Moss Landing and Quad Cities test results k.
Drywell bypassing considerations.
8.
Resolution of generic ite=s (refer to the December 18, 1972 ACRS report and subsecuect ACRS reports) 9.
Matters iden:if ed in the Regulatory Staff Safety Evaluation Report a.
Seis=ic classification of various syste=s and structures b.
Quality group classifications c.
Stress li=its and design loading combination d.
HPCS diesel generator reliability e.
Radionuclide concentrations in the refueling water storage tank f.- Freon deconposition potential g.
Main s tea =line isolation h.
Ma1 positioning of control rod (s) 1.
Reactieity reduction follouing a reactor trip t
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Seismic design considerations a.
How is a representa:L >e set of stresses obtained for a' given direction.ehen core thcn one code chape is considered?
b.
How is reic:ive motion treated for "rigid" members -(base slao and walls)?
c.
Is the use of "beam type" mode treat =ent completely acceptable?
11.
Environmen:21 considerations:
a.
Poten:ial doses to water drinkers downstream frora Grand Gulf f rom all cuclear plants upstream of the user (applicant) b.
Effects of f ailure in the radwaste storage system (Regulatory S ta f f) c.
Considera: ion of the ef fects of mining, preparation, and process-ing of fuel and radioactive waste storage (Regulatory Staff) 1 I
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