ML19199A665
| ML19199A665 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/17/1969 |
| From: | Powell Rr US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Boyd R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 7905070179 | |
| Download: ML19199A665 (6) | |
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e July 17, 1969
'O Ecger S. Ecyd, Assistant Directer fer Feector ojects, IRL THEU:
Ec' cert L. Tedesco, Chief, RF3-2, CE" ACES SUSCOM'C"'!IZ MEITING FCE TdEEZ MILE ISLA:C NUCLIAR FC4ER ?!AT GT 2 DCCKZT NC. 50-320 The ACRS Subecccittee =eeting to review the TMIf2 plant for a ccnstructicn permit was held on June 26, 1969 at 1717 H Street in desningten, D. C.
The atttched sttendance list indicates the participants in :nis meeting.
A.
ORL - ACES Pre-ceeting The twelve (12) items included in Sectica 19 0 of our re;crt to the ACES which vill requ're resolution with the applicants were discussed with the Subecc=1ttee. Our position with the following items were discussed in greater detail.
(1) Greuted Tendons Cur position regsrding surveillance of greuted tendens is thst addition of e= bedded instrumentation should be required in addition to the periodic prcof-pressure test proposed by the applicants.
Dr. Seiss indicated to the staff that it was his opinion the use of embedded instru-centation would not provide information regarding the prestressed condition of the contain=ent. He also indicated that greuted tendens require stress en the quality assurance aspects to ensure proper grouting and surveillance per se may not be a require:ent.
(2) Flywheel
'4e indicsted to tne Coccittee our position concerning 1003 volumetric inspection of the pri=ary coolant pump flywheel plus additional analysis of consequences of flywheel failure including seis=ic forces (gyroscopie effect). Also, we indicated the flywheel =ust be included in the inservice inspectica progrsm.
(3) Iodine Removal Car report to the ACES indicates we still have no positien es to the use cf alkaline sodium thiosulfate as an additive to the spray syste=.
EcVever, cur Table 9 2 sacvs credit fer n3
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Ecger S. Seyd ;u17 17, 1969 organic iodine removal ( h = 0 35hr-l) being eensiderel for the sodium thicsulfate additive. This incenststency between no pcsition and credit for removal cf crgens should be eliminated by estaclishing a CRL position regsrding the sodium thicaulfate as an additive.
3.
Apelicant-Sta ff-ACES Subccttittee Meeting The folleving :stters were discussed in the applicant-staff-Subeccaittee meeting:
(1) Grouted Tendoi & C,atain=ent Test Dr. Seiss reviewed the problems associated with greuting of pre-stressed tendens. The applicants were asked to analyze the capability of the containment building to withstand the design pressure and temperatures effects with tenden failures due to breats and less of prestress aree. This analysis of tenden deterioration effect en the containment villte discussed at the ACES July =eeting. The applicants were asked to discuss with the staff the results of the tendon deterioration analysis befere the July ACES meeting.
Er. Seiss stressed the i=portance of a good quality assurance pr ogra: to assure proper grouting and prevention of possible corrosive agents getting into the grout.
(2) Flywheel The Subcomittee indice *.ed the a pplicants shculd check with the flywheel =snufacnir< r to deter =ine r the flywheel can be dis-cantled for inservice inspection. They indicated to the a ppli-cents that recent plants being reviewed for operating licenses were perfor=ing volu=etric inspection of the fly. heel during fabricaticn and as part of the inservice inspection.
(3) ECCS Diversity 3&% indicated that the analysis for primary pipe ruptures froc O.Lft2 to 0.022ft2 (2 in. dia ) have been ec=pleted. The h psig centaincent pressure backup signal for initiating the ECCS provides adequate protecticn of the core for the complete break 2 to 0.022ft2 For a 0.022ftcbreak in size spectrum cf ik.lf t the primary piping the primary system pressure reaches 18CC psig in 60 seconds while the containment pressure reacnes k psig in h00 seconds.
2 brea> and 2C0 second TCCS The analysis indicates the 0.022ft initiation by the L psig contain=ent pressure signal does not uncover the core.
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Feger S. 3cyd July 17, 19C9 (4) Fleed Frctection The applicants indicated the TMT site vculd be protected against the fleed height resulting frca the probable maximu=
ficod (FMF) calculsted by U.S. Ccrps of Engineers. This FMF 0
is estimated to be about 1. 6x10 cfe at the TMI site and the applicant indicated it veuld reault in a fleed height of about 306 5 feet above mean sea level.
The present dike around the TMI site provides ficod protection to 310 feet above mean sea level at the upstream end of the island. Met-Ed indicated it :sy consider protection of the site against the FMF by leaving the dike as it presently is and protectin.; the necessary buildings to the required height to assure safe shutdevn of the plaat.
Met-Ed intends to send a letter to Dr. Morris indicating their intent to =eet the protection required for FMF.
(5) Fesearch a revelcreent Uedatine (a) Cnce-thru Steem Generater Tests completed - topical repcrt being reviewed by S&W (b) Centrol Red Drive System Testa completed-topical report to ERL in July 1969 (c) In-Core Detectors Completed except for life test - topical report in 3rd qusrter 1969 (d) Core Thermal & Hydraulic Tests Tests included core vent valves - topical report to EF1 in August 1969 (e) 31cvdown Forces S&W has develcped an analog eceputer to prcvide forces developed on core internals during the accidant blevdown.
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A separate digital code vill use the analog results to develop the deflections in the core internals. Awscical report to be submitted describing zethods and results.
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E 6?r S-Scy0 July 17,1969
( f) Fuel Pin F:ilure Curing LCCA Single end culti-pin tests are being performed to determine failure m; des to assure that adequate core c Oline is provided during and following the LOCA.
These tests vill be completed in 1969 and a tcpical report cubmitted in 1973.
(g) Xenon Cscillations A topical report vill be submitted in September 1969 Fesults of analysis to date indicate axial xenon oscillations vill probably occur. 31W has indicated they intend to centrol these axial escillations using partial length centrol reds substituted for the normal control rods in group 3.
(h) I: dine Peteval ( Alkaline Sedium Thicsulfate) draft report en stability and compe tability of a
sodium thiosulfate is being reviewed by CRL staff. A topical re;0rt en sprey effectiveness using alkaline sodium thicsulfete spr:y edditive to be submitted in 1969 (i) Core Vent Valves Vibr tien 2nd flew testa cre ces;1eted. A topical repcrt vill ce submitted in July 1969 (J) High Tuel Burnup Testa
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3&W feels this is not a sate,f-related concern. Tests a re currently in progress.
(6) Pressure Vessel Surveillance The a pplicants indicsted they vculd participate in the S&W Integrated Surveillance Progrer-We have indica ted in cur rep 0rt to the AC?.S that the applicants should have the espa-bility and allov for sufficient specimen coupons to insert s fifth curveillance ce psule e t the core sidol2ne in the event they ch:uld drop cut of the Integrated Surveillance Progrem.
At the cenclusion of the meeting, Dr. Isbin indicated tha folleving =atters
=ight be included for diccussion at the full Carmitteg. meeting ir Julyg.
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(1) Quality Assurance f rogre:
(2) Tenden Greuting & Containment Testing
Ecger S. Ecyd 5-July 17, 1969 (3)
Icdine Femoval (L) E3diclysis Hydrogen Control oy Furging
( 5) I ergency Plan (6) Flywheel (q/A, Design, Inspectien)
(7) Instrumentation (separation of centrol and protection and follcwing accident opers t ion )
(3) Updating FAD (9) Inservice Inspection (10) Flcod Prctectica
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/*'"k Raymond R. Pcvell Reacter Project Brench 2 Division of Resetor Licensing ec:
P. A. Morris F. Schreeder S. Levine D. Skovncit R. EeYeung Branch Chiefs, ERL
- 3. Grimes CO (2)
A. Gluckmann G. Arndt R. Shev=3ker D. Eullivan M. Fairtile D. Ross F. Schauer
'a'. Nischan H. Steele A
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M. Litarkin G. Arndt+
R. Shevna ker*
GPU - Me t -Ed D. Sullivan+
M. Fairtile*
J. Miller D. Ecss+
G. 31erren F. Schauer+
R. Heward R. Powell W.
Nis c han Babecek & Wilecx Schupack & Asscciates E. C. Ward M. Schupack
'd. Ceb'o A. Van Der Poll
'd. Little C. Evans Burns a Roe E. H :cr.e r A. La car P. Dereinec W. Smith S. 2vickler J. Archer Picks:
. & Assccietes G. Harstead K. Shotvell W.
Lcve K. '4cedard Gilbert Asscciates. Inc.
Shav, Pittman, Pctts,Trewbridge & Madden R. McLe cre D. Creneberger Fox Trewbridge
- Part Time (=crning session cnly) a Lu 4
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