ML071340184

NFPA 805 Transition Pilot Plant FAQ 06-0019, Revision 1, Definition of Power Block and Plant

ML071340184
Person / Time
Site:	Harris
Issue date:	05/08/2007
From:	Holder A Progress Energy Carolinas
To:	Office of Nuclear Reactor Regulation
References
FAQ 06-0019, Rev 1, NEI 04-02
Download: ML071340184 (2)

Text

FAQ Number 06-0019 FAQ Revision 1 FAQ Title Definition of "Power Block" and "Plant" Page 1 of 2 Plant: Harris Nuclear Plan (HNP)

Date: 02-16-07 Contact: Alan Holder Phone: 919-546-3372 Email:alan.holder@pgnmail.com Distribution: (NEI Internal Use) 805 TF FPWG FPRATF Purpose of FAQ:

Provide specific clarificati on within NEI 04-02 as to the def inition of "power block" and "plant" used in NFPA 805, such that the te rms are applied to Structures, Systems and Components associated with Nuclear Safety Performance Criteria.

Is this Interpretation of guidance?

Yes / No Proposed new guidance not in NEI 04-02?

Yes / No Details: NEI 04-02 guidance needing interpretation (include section, paragraph, and line numbers as applicable):

NEI 04-02, Section 4.3.1, Fundamental Fire Protection Program and Design Elements Transition Review, Table B-1 us es NFPA 805 chapter 3 as part of the transition review. Specific clarificati on is requested for certain terms and phrases found in NFPA 805.

Circumstances requiring guidance interpretation or new guidance:

Clarification of NFPA-805, Standard for Fi re Protection for Light Water Reactor Electric Generating Plants (2001 Edition), Chapter 3, Se ction 3.3.1.2 Control of Combustibles. "(1) Wood used within t he power block shall be listed pressure-impregnated or coated with a listed fire-retardant application."

Specifically, the definition of "Power Block" and "Plant

" and how these will be applied when reviewing Chapter 3 transition.

FAQ Number 06-0019 FAQ Revision 1 FAQ Title Definition of "Power Block" and "Plant" Page 2 of 2 Detail contentious points if licensee and NRC have not reached consensus on the facts and circumstances:

NA Potentially relevant existing FAQ numbers:

FAQ #06-0007 Response Section:

Proposed resolution of FAQ and the basis for the proposal:

This FAQ asks to define, where used in NFPA 805, Chapter 3, "power block" and "plant" are intended to mean or are equivale nt to, "areas in which a fire could jeopardize the ability to meet the performance criteria described in section 1.5.1".

This is based on RIN 3150-AG48 (Statement of Considerations see SECY-04-0050 dated March 29, 2004 approved by SRM 0050 dated May 11, 2004), which states in part, "under NFPA 805, the 10CFR50.48(a)(2)(iii) requirement to limit fire damage to SSCs important to safety so that the capability to safely shut down the plant is ensured is satisfied by meeting t he performance criteria in Section 1.5.1 of NFPA 805", the Chapter 3 applicability is lim ited to only these SSCs. Therefore for regulatory purposes, the "power block" and "plant" is synonymous with areas in which a fire could jeopardize the ability to meet the performance criteria described in section 1.5.1, Nuclear Safe ty Performance Criteria.

If appropriate, provide proposed rewording of guidance for inclusion in the next Revision:

As follows; Clarification of NFPA 805 specific sect ions as applied under NEI 04-02, to be included in (New) Appendix K, to NEI 04-02 upon approval of specific clarification (final formatting to be provided by NEI).

Specific clarification to NF PA Chapter 3, from FAQ 06-0019, Where used in Chapter 3, "pow er block" and "plant" are equiv alent to "areas in which a fire could jeopardize the ability of structures, systems and co mponents required to meet the performance crit eria described in section 1.5.1, Nuclear Safety Performance Criteria."