Text

Steam Dryer 2/18/10 NRC Presentation, Redacted Version
	ML100360357
Person / Time
Site:	Grand Gulf
Issue date:	02/18/2010
From:	Davant G; Entergy Operations
To:	Lyon C; Plant Licensing Branch IV
	Lyon, C F, NRR/DLPM, 415-2296
Shared Package
ML100360312	List: ML100360357; ML100360391;
References
	TAC ME3254
	Download: ML100360357 (24)
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Grand Gulf Nuclear Station Extended Power Uprate Impact on Steam Dryer NRC Meeting February 18, 2010

Agenda:

Replacement Dryer Decision Analysis Overview of PBLE Analysis GGNS Reg Guide1.20 Rev.3 Assessment Valid Prototype GGNS vs. Valid Prototype Replacement Dryer Design Attributes Power Ascension Plan Schedule Summary Discussion and Feedback 2

Replacement Dryer Decision Analysis Kepner-Tregoe Decision Analysis indicated the Replacement Dryer as the best option

- Minimizes critical path impact, radiological impact, probability for industrial safety issues and schedule risk((

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- Maximizes reliability and installation simplicity

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- Meets RG 1.20 Rev.3 Replacement dryer classified as Non-Prototype Category 1 per RG 1.20 Rev.3

- Substantially the same as a specified Valid Prototype that is in current operation 3

Overview of PBLE Analysis

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Overview of Plant Based Load Evaluation PBLE) Process:

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Overview of Plant Based Load Evaluation PBLE) Process:

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GGNS Reg Guide 1.20 Rev. 3 Assessment PROTOTYPE Unique or first of a kind Analysis, Extensive Measurement, and Full Inspection Inservice problems resulting in component or operational modifications Conditional Valid Prototype Prototype Valid Prototype modified NON-PROTOTYPE Extended satisfactory NON-PROTOTYPE inservice operation NON-PROTOTYPE CATEGORY II CATEGORY I CATEGORY III Similar to Valid Prototype Substantially Similar to Substantially Similar to but some component Valid Prototype Conditional Prototype differences Analysis and Either Analysis, Limited Analysis, Limited Extensive Measurements or Measurements, and Full Measurements, and Full Full Inspection Inspection Inspection Limited Valid Prototype NON-PROTOTYPE CATEGORY IV Substantially Similar to Limited Valid Prototype Analysis and Either Extensive Measurements or Full Inspection 7

Valid Prototype Per RG 1.20 Rev.3

- Valid Prototype A configuration of reactor internals that has successfully completed a comprehensive vibration assessment program for prototype reactor internals and has experienced no adverse in-service vibration phenomena.

- Non-Prototype Category 1 Those configurations that have substantially the same arrangement, design, size, and operating conditions as a specified valid prototype for which nominal differences in arrangement, design, size, and operating conditions have been shown (by test or analysis) to have no significant effect on the vibratory response and excitation of those reactor internals important to safety.

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