Document: NUREG-0800
Document ID: 80fe9eee-2d6e-4a7e-b7dd-ec23aab2d39f
Document Type: srp
Title: STRATEGIES AND GUIDANCE TO ADDRESS LOSS OF LARGE AREAS OF
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1211/ML121110138.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.4
CFR Part: 
CFR Title: 

Content:
ng equipment that are intended to be used for a specific strategy may be stored in the vicinity of the area where they will be used, or where applicable, left permanently installed on the system being adapted. 4. At some licensed facilities, licensees made minor plant modifications to facilitate implementation of various strategies. These types of modifications include modifying fire hose stations to increase flow rates and decrease implementation times, and installing hose fittings and valves on plant piping to allow simple connection of fire hoses for injection to plant systems, such as containment, hotwell and SGs. The licensees who made these modifications stated that they were relatively inexpensive and, in their engineering judgment, worth the expense. Based on the inspections at 65 sites, the NRC staff concluded that these types of simple modifications significantly decrease the time required to implement strategies and increase the likelihood that these strategies can be implemented successfully. Staff Position Applicants for COLs or operating licenses should consider incorporating design enhancements or facility modifications to facilitate implementation of strategies when such an enhancement or modification can substantially reduce the time required to implement the strategy. The strategies should be described in the application in a manner consistent with guidance in Appendix D of NEI 06-12, Revision 3 and subsequently implemented in the site procedures by the licensee. 5. Guidance provided in NEI 06-12, Revision 3 states that strategies can be implemented through guidance or procedures, consistent with the user’s chosen approach, and that procedural steps are expected to be general in nature, consistent with the need for flexibility of deployment. NRC inspections at licensed power reactor facilities revealed the level of detail and guidance provided in procedures varied considerably between facilities. Some licensees had established high quality,