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Partial response to FOIA request for 771026 minutes of ACRS Subcommittee on Fluid/Hydraulic Dynamic Effects meeting in Portland,OR & addl ACRS documentation.Documents identified on App H & addl ACRS documents encl.

Accession Number: ML20234E460

Date Released: Monday, September 14, 2020

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• ML20235C926 - Expresses concerns re delays in review of GESSAR,due to introduction of new designs in several areas of plant & slips in transmitting part of regulatory staff initial request for addl info.Revised review schedule encl. (3 page(s), 2/12/1974)
• ML20235F083 - Draft safety evaluation re GE std SAR. (388 page(s), 10/11/1974)
• ML20235E583 - Forwards description of NRC position on safety relief valve discharge piping as result of NRC continuing review of quencher safety relief valve discharge device for facility. Commitment to implement NRC position requested by 760716. (2 page(s), 7/7/1976)
• ML20235C401 - Informs that on 740821,agreement reached to assist ARCS in early identification of potential problem areas & potentially difficult novel features for each application. Comparison of principal design characteristics of NSSS encl. (4 page(s), 7/17/1978)
• ML20235E659 - Draft summary of 720105 meeting w/GE & util re rod drop accident.GE did not attempt to defend old scram function w/ old methods & input. (3 page(s), 1/7/1972)
• ML20235E615 - Forwards memos obtained informally from Div of Reactor Safeguards re uncertainties in GE analysis of rod drop accident. (1 page(s), 1/12/1972)
• ML20244B901 - Summarizes 820513 telcon w/J Humphrey re encl 820508 ltr on potential safety issues of Mark III containment. (5 page(s), 5/18/1982)
• ML20235F637 - Submits comments on technical issues addressed in LJ Koch 741231 ltr to WR Stratton,recommending that ACRS reconsider position on high pressure testing of drywell structure described in ACRS 741212 ltr on Allens Creek Station. (2 page(s), 1/30/1975)
• ML20235C944 - Assesses plant application for OL,per 740821 agreement to render technical assistance.No const or licensing delays anticipated pending resolution of concern re dynamic loads on containment resulting from LOCA & relief valve action. (1 page(s), 9/23/1975)
• ML20234E798 - Forwards list of info required to complete review of LWR ECCS performance to verify conformance to 10CFR50.46.Info must be filed on GESSAR-238 & GESSAR-251 dockets as part of std SAR & be reviewed prior to preliminary design approval. (31 page(s), 7/8/1976)
• ML20235C519 - Forwards Round 1 to request for addl info re application for preliminary design approval of GESSAR-238 std NSSS. Review of interfaces between NSSS & balance-of-plant,site & options completed.Response requested by 750725. (65 page(s), 7/1/1975)
• ML20235C896 - Forwards detailed request for addl info needed to complete review of GESSAR application.Response to items concerning QA,instrumentation & reactor sys requested by 740509 & 0517, respectively. (25 page(s), 4/11/1974)
• ML20235E571 - Submits comments & recommendations on 750212 & 13 meetings w/GE in San Jose,CA re Mark III experimental testing program & GE analytical methods.Relief valve & pool dynamic loads, seismic testing & asymmetric effects addressed. (2 page(s), 3/26/1975)
• ML20235E873 - Forwards request for addl info,by 750321,re electrical, instrumentation & control sys for GESSAR-251.Application GESSAR-251,consisting of PSAR,docketed on 750214. (7 page(s), 2/19/1975)
• ML20235E056 - Informs that AEC has reevaluated licensing staff requirement for high pressure testing of BWR Mark III drywell structure, in response to 740806 ltr.Staff position remains unchanged. (5 page(s), 11/11/1974)
• ML20235E841 - Summary of 740816 meeting w/GE to discuss GESSAR application,including GESSAR schedule,future technical meetings,procedural considerations & future standarization matters.List of attendees,viewgraphs & related info encl. (13 page(s), 9/3/1974)
• ML20235E682 - Summary of 720105 meeting w/GE & util re rod drop accident analysis.BNL consultants studied rod drop accident for number of months & found that GE using incorrect scram function (linear ramp) in rod drop accident. (3 page(s), 1/7/1972)
• ML20235C830 - Forwards consultant repts re Mark II pool dynamic loads for 1977 & table listing repts,issue date & status,per request. Consultant repts for 1978 will be transmitted in similar manner at yr end. (2 page(s), 7/13/1978)
• ML20235C907 - Forwards request for addl info needed to continue review of GESSAR application,including discussion of steam condensation rates assigned to containment sprays & heat sinks.Info requested by 740509. (17 page(s), 3/26/1974)
• ML20235D963 - Summary of 740611 meeting w/GE re requirement for structurally proof testing drywell at 1.15 times design pressure,as well as leak testing drywell at design pressure. List of attendees encl. (4 page(s), 6/27/1974)
• ML20235C912 - Forwards requests for addl info re GESSAR application, including futher discussion on inherent protection provided by GESSAR design against aircraft hazards.Info requested by 740509. (42 page(s), 3/20/1974)