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
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References
Download: ML22024A003 (2)

Text

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 SLRA SLRA Background / Issue Discussion Question / Request Number Section Page (As applicable/needed) 1 Section 2-143 Table 2.3.3-4-1 of the SLRA does not Verify whether the fire 2.3.3.4 include the following fire protection protection components listed components are within the scope of SLRA

• Station Transformer Fire in accordance with 10 CFR Suppression System and 54.4(a) and whether they are components subject to an aging

• fire hose stations, fire hose management review (AMR) in connections, hose racks accordance with 10 CFR

• standpipe risers 54.21(a)(1). If any of the listed

• nozzles components are not within the

• seismic support for standpipes scope of SLRA and are not system piping subject to an AMR, the staff

• floor drains for removal of fire requests that the applicant water provide justification for the

• structural steel fire proofing exclusion.

• dikes for oil spill confinement 2 Section 2-340 Section 2.4.8.2 identified Cork and NRC approved use of Armaflex 2.4.8.2 Armaflex fire barrier structural in a SER dated August 8, commodities as being within the 1978, ADAMS Accession No.

scope of SLR and subject to AMR. In ML011980234, (page 4-7).

addition, Section 2.4.8.2 states that the Cork as a fire barrier material Cork is covered with a fire- and water- is not discussed in August resistant caulking material. 1978 SER. Please provide information, including Table 3.5.2-23 cites the Structures references, that supports the Monitoring program for managing loss of acceptance of the use of Cork 1

sealing of the Cork seismic gap filler as a fire barrier material at the material that has a fire barrier intended licensees facility by the NRC function. Loss of sealing was the only and the applicable aging aging effect identified for this Cork effects associated with the fire component. 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.

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