ML19206B276
| ML19206B276 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/23/1976 |
| From: | Shapaker J Office of Nuclear Reactor Regulation |
| To: | Kapur K Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7905080304 | |
| Download: ML19206B276 (1) | |
Text
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1 DISTRIBUTION:
Docket Files m: r 9 - '.?;3 NRR Reading
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CSB Reading Dccket No.50-32D ME:10%iDi21 FOR:
K. Kapur, Section B Leader, Structura' Engineering Srancn, Division of Systems Safety FROM:
J. Shapaker, Section B Leader, Centainment Systems Branch Division of Systems Safety
SUBJECT:
TREE MILE ISL*dlD UNIT N0. 2 REACTOR CAVITY ANALYSIS The applicant for Three tiile Island, Unit No. 2 submitted a new analysis for a postulated cold-leg break inside the reactor cavity.
It snould be noted that the reactor cavity design includes twelve tanks for aing an annular ring at the top of the reactor cavity within the refueling canal.
The outer bottera edges of the tanks will be hinged so that the tanks rotata as they are being opened by the pressure buildup within tne reacter cavity following a pipe break accident.
The applicant claics that if for scxne unforseen cause one or more tanks should fail to rotate, the tanks are designed to rupture and provide the full available vent area from the cavity. Your attentien is directed to Supplecent 3 to the FSAR, in particular pages S3-42-3a through S3 43-3X, for tne analysis provided to support the applicant's contention.
Please advise the Containt::ent Systems Branch of the acceptability of the applicant's analysis.
Sigredtf Gus Lainas Ja:nes Shacaker, Section B Leader Containment Systems Brancn Division of Systems Safety cc:
G. Lainas J. Shapaker H. Silver C. Tan
') 9 79E F. Eltawila LL J'J
Contact:
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F. Eltawita, CS3 7 90 5 08 0 3 c,, y m
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