ML22024A003

Breakout Questions - Fire Protection Scoping and Screening

ML22024A003
Person / Time
Site:	Oconee
Issue date:	01/19/2022
From:	Angela Wu NRC/NRR/DNRL/NLRP
To:
Wu A, 301-415-2995
Shared Package
ML22024A002	List: ML22024A003 ML22024A004 ML22024A005 ML22024A006 ML22024A008 ML22024A009 ML22024A010 ML22024A012 ML22024A014 ML22024A015 ML22024A016 ML22024A017 ML22024A018 ML22024A020 ML22024A021 ML22024A022 ML22024A023 ML22024A029 ML22024A030 ML22024A032 ML22024A033 ML22024A034 ML22024A035 ML22024A036 ML22024A037 ML22024A038 ML22024A039 ML22024A040 ML22024A041 ML22024A042 ML22024A043 ML22024A046 ML22024A048 ML22024A049 ML22024A051 ML22024A052 ML22024A053 ML22024A055 ML22024A056 ML22024A057 ML22024A059
References
Download: ML22024A003 (2)

Text

1 Oconee Nuclear Station, Units 1, 2, and 3 SLRA: Breakout Questions SLRA Section Scoping and Screening:

2.3.3.1.11 Standby Shutdown Facility Fire Protection System 2.3.3.4 Fire Protection Related Systems 2.4 Scoping and Screening Results: Containments, Structures, and Component Supports (only fire barrier portion)

Question Number SLRA Section SLRA Page Background / Issue (As applicable/needed)

Discussion Question / Request 1

Section 2.3.3.4 2-143 Table 2.3.3-4-1 of the SLRA does not include the following fire protection components Station Transformer Fire Suppression System and components fire hose stations, fire hose connections, hose racks standpipe risers nozzles seismic support for standpipes system piping floor drains for removal of fire water structural steel fire proofing dikes for oil spill confinement Verify whether the fire protection components listed are within the scope of SLRA in accordance with 10 CFR 54.4(a) and whether they are subject to an aging management review (AMR) in accordance with 10 CFR 54.21(a)(1). If any of the listed components are not within the scope of SLRA and are not subject to an AMR, the staff requests that the applicant provide justification for the exclusion.

2 Section 2.4.8.2 2-340 Section 2.4.8.2 identified Cork and Armaflex fire barrier structural commodities as being within the scope of SLR and subject to AMR. In addition, Section 2.4.8.2 states that the Cork is covered with a fire-and water-resistant caulking material.

Table 3.5.2-23 cites the Structures Monitoring program for managing loss of NRC approved use of Armaflex in a SER dated August 8, 1978, ADAMS Accession No. ML011980234, (page 4-7).

Cork as a fire barrier material is not discussed in August 1978 SER. Please provide information, including references, that supports the acceptance of the use of Cork

2 sealing of the Cork seismic gap filler material that has a fire barrier intended function. Loss of sealing was the only aging effect identified for this Cork component.

as a fire barrier material at the licensees facility by the NRC and the applicable aging effects associated with the fire barrier function. Please identify the fire-and water-resistant caulking material covering the Cork, where it is addressed in the SLRA, and the applicable aging effects associated with the fire barrier function. In addition, please confirm that all applicable aging effects associated with the fire barrier function is included in SLRA Table 3.5.2-23 for the Cork seismic gap filler material and discuss how the Structures Monitoring program will manage the applicable aging effects associated with the fire barrier function.