ML19220C069
| ML19220C069 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/25/1974 |
| From: | Washburn B US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7904280171 | |
| Download: ML19220C069 (5) | |
Text
49 UNITED STATES li/
ATOMIC ENERGY COMMISSION h, 32 h
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- :c. 50-320 APPLIC;QiT:
Petrccolitan Ediscn Cctrany (Met-FA)
FACILI'lY:
?.ree Mile Islard ::uclear Staticn, Unit 2, (2 C-2)
CPEPr' rig LICD;SE SAFE'IY PEVIIW SIE VISIT - SEISMCIEGY, GECI.CGY L'D FCCiCATICH E;G2c.a EiG, JL1Y 13,1974 A representative of the Iicensing, Site Analysis Sranch, F = daticn Enc.ineer_ng, inst.ected safet.y related seismic geclecic and fcunda-tien engineering featr.rm of i' ; ?.ree File Island sim en July 19, 1974, for a pcrtien of e.e safety review and evaluatien cf de anglicatien for an cperating li nse fer 2C-2.
A list of participants is attaded (Attacdrent 1.).
?.e visit included irspecticn of the ser/ ice water intake structure, the dike and riprap in the area arcu-d de ser/ ice water intake structure, the excavaticn where de air intake structure was being pcured, and selected bcring ccres.
T.e applicants' respcnse to the iric=aticn requirenents in the FSAR, dated April 25,1974, and current requi m ts for additicnal detailed inferaticn ere discussed. Questiens arising frx. the i stection were also disc.ssed. :ictes en the discussiens are in Attact: ent 2.
?.e applicants' representatives irdicated dat Sey wuuld sub-it the rFAiticnal inferatica recuired te c:Irlete deir previcus respenses as noted in Attacrunt 2.
If necessary, feral questicrs resulting frcra the site visit and resperses to de abcve discussicn will be sticitted to the applicants.
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- v. s S. Washburn, Project Manacer Iicht Water Feacters Sranch 2-2 Directorate Cf I.iCC".si".g Attac-rents :
As stated 7904280MJ 86 226
AttFehment 2.
' Docket No. 50-320 TH?.EE MII.E ISI.AND NUCLEAR STATION, UNIT 2, (TMI-2)
SEISMOLOGY, GEOLOGY AND FOUNDATION ENGINEERING SITE VISIT-July 18, 1974 DISCUSSICN NOTES QUESTICN STATUS OF RESPONSS AND COMMSNTS 13-20 Pertains to foundation safe bearing loads.
Unconfined compression test results submitted were for a " perfect" piece of rock.
We need test results for a real sample, i.e.,
with fractures, slippage planes, dipping planes, etc.
Slipping mechanism will give less bearing capacity than the " ideal" (180 KIPS).
The concern is to relate the safe bearing loads to the actual rock structure.
Related questions are 13-31, 37, and 54 We need legible subsurface profiles.
(See 13-23 Fig. 2A-2 in the PSAR),
13-31 Pertains to available bearing capacity.
We need a simple mechanistic analysis.
Related to question 13-20.
Pertain to settlements.
Applicants are prepared 13-32, 33, to make the necessary settlement measurements
& 34 during the hydro testing and will respond around the end of 1974 Applies only to Category I structures not founded on bedrock, 13-38 This question is related to 13-20 above.
Draft of applicantL' analysis was discussed.
Sub-mittal of this analysis should be responsive to the question.
13-39 This question has two parts.
The first pertains to the in situ material involved in that it places lateral pressure on the backfill during flooding and earthquake.
(Amendment 16 did not respond to our intents however, the response in Amendment 18 to Questien 13-52 answere the intent of this part of 13-39.
The next FSAR amendment should reference the Amendnent 18 response to 13-52 as a part of the response
=
to 13-39.)
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'ttachment 1.
Docket Nu. 50-320 THREE MILE ISIAND NUCLEAR STATION, UNIT 2, (TMI-2)
SEISM 01CGY, GEOLOGY AND FOUNDATION ENGINEERING SITE VISIT-July 18, 1974 LIST OF PARTICIPANTS J. Villaume Met-Ed J. Vann GPUSC J. Wright GPUSC W.
Santamour GAI M. Kauffman GAI (F4M)
E. Debbas Burns & Roe (Part time)
A. Za11 nick Burns & Roe (Part time) e L. Heller AEC:L
- 3. Washburn AECsL e
=
86 228
. Attachment 2 Occket No. 50-320 THREE MILE ISLAND NUCLEAR STATION, UNIT 2, (TMI-2)
SEISMOLOGY, GEOLOGY AND POUNDATION ENGINEERING -------
QUESTICN STATUS OF RESPONSE AND COMMENTS 13-39 The second part of this question concerns the (continued) safeguards provided for Category I water supply system and conduits passing through the soil.
We need to know how far the building moves and the provisions for such movements.
Pertains to stability of the dike.
We need the 13-43 detail of the assumptions utilized in the analysis and the reasons therefor.
13-44 Pertains to the stability of the riprap slopes adjacent to the service water intake structure.
Our needs are the same as in 13 43 above.
13-45 Pertains to support of the dike and riprap.
Our needs are the same as in 13-43
Response
+
should address slope stability as well as the actual strength of dike material.
Original question was not clear to the applicant.
13-54 Pertains to foundation model and analyses.of bearing capacity of unweathered rock.
Proposed response to 13-20 will answer this.
- - Applicants' representatives indicated that additional responses would be submitted.
The applicants' respontes to Questions 13-20 thru 13-55, other than as indicated above, were adequate.
I 86 229
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3-
- tachment 2.
Docket No. 50-320 THREE MILE ISLAND NUCLEAR STATION, UNIT 2, (TMI-2)
SEISMOLOGY, GEOLOGY AND FOUNDATION ENGINEERING -------
DISCUSSION NOTES (continued)
Possible sagging and evidence of erocion in the dike between the two service water intake structures were noted during the inspection.
We need assurano that this portion of the dike will not slip, under conditions such as SSE or PM?, and create a blockage of the service water intake.
Several questions were generated by the inspection of the air intake structure excavation and construction.
The applicants' representatives were asked for the ressens for the re-bars sticking out of the floor, reasons for re-bars nounted in various places in the bedrock near the top of the intake structure wall, and the reason for tha jet wells into the rock in various places in the excavation.
The applicants' representatives indicated that the centrue:or started to install re-bar at the top of the wall to tie the wall forms but stopped this installation and went to re-bar in the floor to brace the wall forms.
The repre-sentatives indicated that the re-barsin the bedrock were not to prevent rock slippage.
They also indicated that the jet wells were for water removal to keep the area dry and that these were not installed because of any rock slipping problem.
The cbservaticns ade during this visit have been discussed with RO (F. Dreher and S. Folsan).
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APPLI C.T:
btrctclitan r'" cen Ccrpa:Ti Cht-Ed),,
FACILITI:
2.ree Tiile Isltnd :.uc' m'*
- Station, L' nit.2., (2 0-2)
CPIF1cI:E LIC5232 SXLS IE*IDi SI'2: VISIT - SI.ISDIIXTI, GDOIOGY leID FGID".20i IIEI'E.IT,, JLLY 18, IS74 A recrescntative cf the Limrsinc, Site Icalysis 3 ranch, Fcc.daticn Ln;n mdy, inspected safety related seisric geclecic ard fceia-tica engineeri:q foam of the ?.ree Mile Isla::d siLa en July IS, 1374, for a pcrticn of the safety review and evaluaticn of the applicaticn for an cperatinc licerra for TE-2.
A list cf part.icipects is attaded (Attac=ent 1.).
Te visit includcd inscecticn of the servics water in'd.e structure the di'm and ripp in the area arcund the servicn water intake strme, the excavaticn W.nre tne air intste structuru was toi.T pcured, and selected irring ccres. ?c appliu. :>' rusrxr.se tc the infccation requ'rerrents in the FSAR, dated April 25, 1074, and current requ:m:unts fcr iv'M ticnal c'ntailed inferratien 'aere discussed. Cucsticra ariai:q frcn thr? irpuca 'aure also dis <nssed.
btes en t~e discussicts are in At*mnt 2.
Om appli m ' repetatives irdicated that t"cy *.,culd sutcit the additicnal infor'uticn required to cet plcte their previous r&ee as noted in Ate'hnt 2.
If r-c-rf, forral questices resultirs fran the site 'tisit arei r-ce to the abc'm dirmien will be stiri.
'a the applicants.
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WashLm, Freject :sar m ar Iight Water Fcachu Eranch 2-2 Ci.v. orate cf Liwnsirq At'. h nts:
As stated or*ic s
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- Form AZC.}ls (Rev. 913) AECM 0240 sm c42 to s t es.e s a s.a o.
86 231
DIS.sI3!!TICN:
Docket File AEC PDR Local POR LWR 2-2 File L Reading K. Coller V. A. Moore R.
C. DeYoung D. J. Skovholt D. R. Muller W. R. Butler J. F. S tol::
R. A.
Clark R. E. Ireland D. B. Vassallo K. Kniel A.
Schwencer F. J. Schemel D. L. Ziemann P. L. Collins G. W. Knigh ton G. Dicker B. J. Ycungblood W.
Revan S, Varga D.
J. Hendric R. Maccary V. Stello R. Tedesco H. Denton J. Knight S. Pawlicki L. Shao T. Novak D. Ross R. Houston T. Ippolito f'. Long
- t. Lainas V. Benarcya R. Vollmer B. Crimes W.
Ga: mill J. Kastner M. Spangler R. Ballard
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M. Service Participants ACRS (16)
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