ML20091K852
| ML20091K852 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 06/04/1984 |
| From: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 5211-84-2138, IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8406070222 | |
| Download: ML20091K852 (2) | |
Text
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e GPU Nuclear Corporation Nuclear
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s Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:
June 4, 1984 5211-84-2138 Office of Nuclear Reactor Regulation Attn: John F. Stolz, 01ief Operating Reactors Branch No. 4 U. S. Nuclear Regulatory Ommission Washington, D.C. 20555
Dear Mr. Stolz:
'Ihree Mile Island Nuclear Station, Unit I (TMI-1)
Operating Idoense No. DPR-50 Docket No. 50-289 bhin Feedwater Seismic Stresses In accordance with telephone discussions on May 10, 1984, enclosed please find a tabulation of stresses for the B Main Feedwater (MEW) Line in the Intermediate Building as requested by the NRC Staff. This table shows that the non-seismic portion of the line in the Intermediate Building has seismic resistance. This MEW line was recently checked during the TMI-l I.E.Bulletin 79-14 and 79-02 review, which considered effects of Safe Shutdown Earthquake (SSE). This analysis included internal pressure stress which was originally considered together with deadweight in the computer evaluation.
Sincerely, 1.
I
'll, Director, TMI-l HI11/04S/mle Attachment cc:
J. Van Vliet R. Conte ol c
5(
i 0406070222 840604 PDR ADOCK 05000289 P
PDR GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation
O f
.TABIE 1 C
B MAIN FEEDCLTER LINE STRESSES IN THE INTER:EDIATE BUILDING FSAR
% of Primary &
Break Thermal Thermal
% of Th + DW +
Allowable Secondary Location Stress
. Allowable ~
Allow for SSE +
.8(Sa+Sh)
Stress Figure-
.(Psi) tPsi)
Thermal Press (Psi)
(Psi)
Allowable 14A-12 1-
.2698' 18000 14.99 20367 30000 67.89 7'
3057 18000 16.98 13540 30000 45.13 30 5210 18000 28.9 14467 30000 48.22 44 3791 18000 21.06 18006 30000 60.02
.4015 18000 22.30 18868 30000 62.89
- Please note that.8 (Sa + Sh) {Giambusso Criteria} is not a Code Allowable stress recognized by any design code.
It is a reference stress in Reg. Guide 1.46 to flag the analysts that: if the Primary & Secondary Stresses equal this value or exceeds the point must be investigated for high energy line break (HELB).
Thermal Stress Th
=
Dead Weight Stress Di
=
Safe Shutdown Earthquake Stress SSE
=
Press = Internal Pressure Stress
, _.,,