ML102020296

Requests for Additional Information - Extended Power Uprate (EPU) License Amendment Request (LAR) High Energy Line Break (HELB) Reconstitution

ML102020296
Person / Time
Site:	Point Beach
Issue date:	07/19/2010
From:	Plant Licensing Branch III
To:	Point Beach
beltz T, NRR/DORL/LPL3-1, 301-415-3049
Shared Package
ML102020312	List: ML102020296
References
TAC ME1044, TAC ME1045
Download: ML102020296 (1)

Text

REQUESTS FOR ADDITIONAL INFORMATION Point Beach Nuclear Plant, Units 1 and 2 Extended Power Uprate (EPU) License Amendment Request (LAR)

High Energy Line Break (HELB) Reconstitution (TAC Nos. ME1044 and ME1045)

The following requests for additional information are associated with the NRC staff review in the Balance of Plant Branch (SBPB) associated with HELB reconstitution in support of the EPU LAR 261 dated April 7, 2009 (ADAMS Accession No. ML091250564).

SBPB (HELB) - 1 of the LAR submittal, Section 3.2.2 d), Jet impingement from streams following a high energy line break (HELB) event, states:

The analysis determined new jet impingement centerline pressures and temperatures versus distances utilizing the methodology contained in the American National Standards Institute standard and the break and crack sizes and operating parameters identified in other emergency power unit HELB calculations. This analysis supersedes the discussion of jet impingement methodology provided in final safety analysis report (FSAR) Appendix A.2, Addendum 1 to reflect changes in methodologies used to determine HELB parameters, including those used for environmental qualifications of equipment outside containment [emphasis added].

There is no detailed discussion in Attachment 1 of LAR 261 or Attachment 5 of LAR 261 of the new analysis similar to that provided in the Appendix A.2, Addendum 1, of the FSAR.

Please provide information similar to Appendix A.2, Addendum 1 describing the new analysis.

SBPB (HELB) - 2 Section 2.5.1.3, Technical Evaluation, of LAR 261 states:

The HELB program was reconstituted to ensure documentation existed to demonstrate compliance with all related prior licensing commitments and to reconstitute missing documentation. A new licensing basis is established which requires the U. S. Nuclear Regulatory Commission approval prior to implementation. The new licensing basis is described in this LR section and in LR Section 2.2.1, Pipe Rupture Locations and Associated Dynamic Effects.

Discussions with the licensee indicate that portions of the current licensing basis contained in Appendix A.2 of the FSAR are included in the reconstituted licensing basis. However, the sections of Appendix A.2 to be included in the reconstituted licensing basis are not identified.

Identify the information contained in Appendix A.2 of the FSAR that is included in the reconstituted HELB licensing basis.