ML19220C085
| ML19220C085 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/14/1976 |
| From: | Heltemes C Office of Nuclear Reactor Regulation |
| To: | Kniel K Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7904280192 | |
| Download: ML19220C085 (3) | |
Text
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Decket.'b. 50-320 APR 1 i cio Karl Kniel, Chief, Light Water Reactors Branch #2, EBi THREE MILE ISIR;D UNIT 2 - INITIN. TEST PPCGRMI The enclosure provides a st= nary list and status of cutstanding itecs pertaining to our review of Sectica 14 of the FSAR for TM-2.
Eased en telephone discussicns with the Applicant, we believe that ite=s 1-3 in the enclosure can be resolved before we fonmM cur SER input for Secticn 14 ca April 20, 1976.
Cri;;i.;'. :. _
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C. J. Heltems, Jr., Chief Quclity Assurance Br nch Division of Project Manage::ent
Enclosure:
As stated cc:
D. J. Skovbolt H. Silver H. B. Clayton Docket Files v /
DISTRIHJrION:
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g THREE MILE ISIXQ UNIT 2 - FSAR SECTICN 14 CUTSTXQING ITE!S 1.
Confomance with Regulatory Guide 1.80, "PRECFERATICNAL TESTING CF INSTRLNEhT AIR SYSTE!S." Cur latest review of Sectica 14 disclosed that the applicant eliminated two test abstracts in a recent amend-ment to his FSAR. These abstracts had fo red the bases for cur previcus acceptance of the testing planned for the instre.ent air system. The applicant verbally agreed to mcdify his respcnse to questien 41.7 in the next amend ent to his FSAR to state his plans for testing of the instracnt air system. The applicant's repre-sentative, Mr. Max Nelsen, agreed to ' discuss the proposed changes (by telephcne) with the QAB before April 20, 1976.
2.
Reactor Cc=penents Handling System. The applicant's representative, Mr. Max Nelsen, verbally agreed to expand the infocatica currently provided in the FSAR (Supplement 2, p.349a) to describe the pre-operaticnal testing planned for this system. This infomatien will be provided in the next FSAR amendment and will also be discussed (by telephcne) with the QAB before April 20, 1976.
3.
Shut Down Frca Cutside the Centrol Eccm. The applicant's preposal for the conduct of this test, as described in test abstract TP 300/36, is not ccasistent with the intent of Regu' 'crf Guide 1.68.
The applicant was advised of this ccncern duri* g meetings held en September 12, 1975 and April 1, 1976. The applicant's representative,
Mr. Max Nelsen, was advised by telephene en Acril 8, 1976 that the planned test shculd be acdified to de castrate that the reactor can be shutdown and maintained in a hot standby conditicn frca 1ccaticas external to the main control rocm. The applicant agreed to =cdify TP 800/36 in the next amend.ent and to discuss the prcposed changes (by telephone) with the QA3 before April 20, 1976.
4.
Centrol Red Scram Time Testing. The applicant has not provided acceptance criteria for the time required for full centrol red insertien. We requested that this infocaticn be provided during-meetings with the applicant en September 12, 1975 and Februarf 6, 1976. At the Februarv 6 neeting, the applicant requested that we fo= ally request this inic=ation. The QA3 prepared the fo=al request which was forwarded to thR Branch 12i' cn Februarv 6,1976.
This item was not expected to be resolved by Acril 20, 1976 as the formal request has not yet been submitted to the applicant.
5.
Ccnformance with Regulatory Guide 1.79, "PREC?EFAT CNAL TESTING CF DERGENCY CCRE CCCLING SYSTEMS FCR PRESSL' PEED YATER REACICRS." De applicat has not preposed to ccnduct i. pir.: testing that wculd simulate recirculaticn frca the centain:.cnt stra with the icw pressure coolant injectica system.
Instead, he'has proposed to bb 1_/ emo: J. W. Gilrny to K. Kniel dated Febn: arf 6, 1976.
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. perfora cut-of-plant scale model laboratory tests to dercastrate that vortexing will not occur in the containment sump. The applicant was advised during a meeting en April 2,1975 that his FSAR should be amended to:
- 1) describe the scope and schedule for ccmoletien of the planned model tests, 2) describe the test methcd that.,culd be utili:ed to establish low pressure ccolant injection system ficw rates to values that would not ccepremise the NPSH margins and to provide a technical ergument that the test method is censervative and 3) to describe in-alant testing to experimentally validate the calculaticns of line loses aetween the centainment st::p and the Icw pressure ccolant injection pump suctions. This issue is not expected to be resolved by April 20, 1976.
6.
Reactor Protecticn System and Engineered Safety Features Actuatica System (ESFAS) Respense Times. The applicant has not proposed acceptable methods to demonstrate the respense times of pri.ary sensors for protection system channels. Tne applicant has been advised of cur concerns in this area during several previous meetings.
During the most recent reeting on Acril 1,1976, -the applicant was requested to modify test abstract TP 305/2 to:
- 1) clarify the abstract, 2) excand the abstract to address the ESFAS protectica channels, 3) establish realistic and quantitative acceptance criteria for the tests and 4) address the teeting planned for the interfacing hardware (themowells, snubbers, etc.) between the meaeured variables and the inputs to the pri.ary senscrs. This issue is not expected to be resolved by April 20, 1976.
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