ML20210K922

Reliability & Support Configuration

ML20210K922
Person / Time
Site:	Crystal River
Issue date:	04/24/1986
From:	FLORIDA POWER CORP.
To:
Shared Package
ML20210K894	List: 3F0486-13, Forwards License Change Request 44 to License DPR-72,adding Condition That Design & Licensing Basis of Reactor Coolant Pump Supports Need Not Include Consideration of Effects of Postulated Pipe Ruptures ML20210K905 ML20210K922
References
NUDOCS 8604290119
Download: ML20210K922 (6)

Text

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1 ATTACHMENT C RELIABILITY AND SUPPORT CONFIGURATION CRYSTAL RIVER 3 GENERATING PLANT Prepared By FLORIDA POWER CORPORATION

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RC PUMD SUPDORT CONFIGURATION Preseni Octimi zed Quantity 32 Snubbers (8/ pump) 4 Snubbers (~1/ pump) 4 Rigid Struts Size 18" to 25" Bore Nax. 14" Bore Capacity 1000 Kip to 2000 Kip 400 Kip ODTIMIZED COMPONENT RELIABILITY Snubbers Integral Reservoir (Pressurized)

More Radiation Resistant Fluid Longer Seal Service Life Improved Contrcl Valve Performance / Reliability Test-in-Place Capability Link Bars / Struts One-Time Installation Only Requires Visual Inspection large Comoonent Suecorts Acceptaoie R.v. anc OTSG Margins SYSTEM RELIABILITY Overall Flexibility of Piping System Increased Lower stress during thermal expansion of system - heat-up/ cool down.

(vs. present configuration if snubbers were assumed to fail in locked-up/rigic condition)

Higher seismic stress (low probability of occurrence)

Suf fici ent design ma rgins retained for piping and large component i

supports.

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