ML20198F755
| ML20198F755 | |
| Person / Time | |
|---|---|
| Site: | Washington Public Power Supply System |
| Issue date: | 05/20/1974 |
| From: | Cox T US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Schwencer A US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| CON-WNP-1169 NUDOCS 8605290077 | |
| Download: ML20198F755 (3) | |
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Docket tio. 50-460 A. Schwencer, Chief Light Water Reactors 3 ranch 2-3, L MEETING WITH UASIIINGTON PUBLIC POWER SUPPLY SYSTDi (WPPSS) TO DISCUSS APPLICAiVI'S DESIGN CRITERIA FOR HIG!l INERGY FLUID LINES Tirse and Date:
9:00 a.m., Priday May 24, 1974 Location:
Room P-110 Bethesda, MD Purpose of !!eeting:
To discuss staff concerns shout applicant's high energy fluid line design criteria.
Participants:
AEC - T. Cox, J. Knight, A. Miller W'PPSS.- A. Hosler UE&C - A. Friedman, J. Schmieder, W. Moritz, G. Rigamonti, J. Dainora B&W - K. Suhrke Orig! sal sissed by i
Thomas H. Cox, Project Manager Light Water Reactors Branch 2-3 Directorate of Licensing i
Attachment:
8605290077 740520 Proposed ffecting Agenda PDR ADOCK 05000460 A
,DISTRIBUTICN:
vbocket Piles RP JDs DKartalia AEC PDR RP BCs RO (3)
LPDR JHendrie RS (3)
LWR 2-3 Reading Anenneke ECoulbourne L Reading TR ads Receptionist EGCase TR BCs RKiccker AGiambusso m ren Tv-4 eht-RSDyd x7886/ LWR 2-3 TCox Mf1 11er
'f*y o"ff,,-
" *JE isenhut-RLoose ACT S~(16)-
THCox:cj
. 5llll74 oan s.
F;sen AEC.)l3 (Rev. 9 SM AECM 0244 spo c4s se esee e sae-a e4
g Propaced :2ecing Agenda UNP Postulated Pipe llreaks 3.0 De,1*;n o f 9trueraron, Cr, mn:ents, CT:in-ant and__ S":ttens 3.6 Prbtection 'ninst D - --ic
?f f e ts / s spcinted with the l'ostalated Rupture ot i' r.i l a a 1.
The design critaria presented in PSAR 3.6 do not specifically conform to criteria acceptaale to the staff in a number of det' ails.
It is required that the applicant either codify the criteria appropriately or provide technical justification for the apparent differences. The principle ar2as of difference ara the following:
(a) Criteria for postulating break locations and ortantations in high energy fluid lines inside containment.
(b) Procedures for determining load capacity of pipe following a postulated break and the load which can be transmitted to an anchor point.
(c) Assumption of operating condition prior to a postulated break in design of restraints.
(d) Criteria for postulatinh break locations in high energy lines outsicie contain ent but t:ithin an enclosing structure or compartneut as c.rc,ced
- h
.:ch crf tri2 0>r lines ro'tte? nlan uid a, abo"*,
balox nuch structures and compartments.
(c) The rcold2nce of dasign f eatures, copecially at points of pipe fixity, that muld ree,aira welding directJy to tha outer surface of the piping.
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2.
In P3AR 3.6.6.1, in the discussion of stress criteria for piping t hich passes through the primary containnent penetration, clarify the neaning of tha tern, "the outernost inolation valve."
3.
In FSAR 3.6.1, in stating the as.4umption of a LOCA on the reactor sija of *h tal ca la :as e.* I and IV of Figure 3.6-1, indleate whather the valve referred to is the second valva, not shown in the figure.
4.
In ?5A?. 3.6.2.1 there is a diacussion of piping which passes through primary containnent penetrations.
Provide the additional criteria reciuired for such sections of pipe in order to justify the no-break po.4tulate or refer to other parts of the PSAR schare such criteria are provided. Modify the anv/er in Amendment 4 to Question 3.40 to incorporate the criteria for this feature of the desi,n.
7 5.
PSA2 3.6 states that the design philosophy for pipe breaks outside containment la described in Section 3.6.6.
Indicate specifically all s
the portiona of PSAR Section 3.6 which are applicable to this subject for ~ piping systems outsiue containnent, and not only those concerned
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with postulated break 10 cations.
6.
In r$ ' 3.12/1.'J,
-b 2 etr.te ent t 'o t the IP:P-1 deair,n utilizat
- S 20.2
-S=
pra
- L -- 1;; inst p -j t Sip tum'Aa 2:-.atn e is not acceptabla without specific technical justification as noted above in iten 1.
It la recuired that the applicant either nndify the crit'ria enployed or provide said justificativa for the dif fercaces with R2;ulator;-
Guide 1.46.
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