ML20237K758

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Summary of 870814 Meeting W/Ebasco in New York,Ny Re Conduit Support Design Review & Ebasco Audit
ML20237K758
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 08/14/1987
From: Williams N
CYGNA ENERGY SERVICES
To:
CYGNA ENERGY SERVICES
References
NUDOCS 8709080008
Download: ML20237K758 (2)


Text

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TU Electric 84056 CPSES IAP Phase 4 Date: 8/14/87 Conduit Support Design Review 8:50 a.m.

Ebasco Audit New York, NY Ebasco H. S. Yu, C. Liu B. Shakibnia Cygna I

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Required item Comments Action By I l

Seismic Load Combination Methodology The response spectrum analysis method provides seismic load results which are unsigned. Cygna stated the same concern was raised during the cable tray audit regarding the direction and magnitude of the critical load combination of gravity and seismic loads by STRUDL.

l Ebasco stated that for support members, the effects of the  !

loads are combined at the stress level and the signs of I individual loads are maintained. And for anchorages, the envelope of reactions is used. Ebasco also stated that the conduit group uses the same version of the STRUDL program as the cable tray group uses. (Note that Ebasco's cable tray group has provided Cygna with an example hanger calculation which illustrates the Ebasco load combination methodology. Ref. EB-T-3204, File No.1-C-2, July 6, 1987.)

S 87090B0008 B70908 PDR ADOCK 05000445 A Poa 1 1 i

signeo See Attached Distribution Sheet. Page of UAM M e/ 1 -

Distnbution: [

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1 DISTRIBUTION LIST Mr. J. Redding Mr. L. Nace Mr. W. Counsil Mr. D, Pigott Ms. A. Vietti-Cook

.Mi8CMGrimes:s i Mr. E. Siskiri l Ms. N. Williams Mr. J. Russ Mr. W. Horstman Mr. K. Parikh i Mr. B. Atalay I Ms. D. Leong Mr. B. Shakibinia Project File

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