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:
offsite equipment. Spray scrubbing uses large volumes of water and could last for days; therefore, containment of potentially contaminated runoff is also of concern. Depending on the site topography, containment of runoff may not be readily achievable. If enhancements to the containment of runoff are achievable, they should be included in guidance or guidelines. The plans and strategies for water spray scrubbing and containment of contaminated runoff 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. 20. Staging of Equipment for Water Spray Scrubbing (Item B.3.b) If a strategy for water spray scrubbing that relies upon onsite equipment is developed, then that equipment should be stored in an appropriate location at least 100 yards from the target areas. This item in not applicable if a licensee is relying solely on offsite equipment for water spray scrubbing. Technical Rationale 1. Section 50.54(hh)(2) states: Each licensee shall develop and implement guidance and strategies intended to maintain or restore core cooling, containment, and SFP cooling capabilities under the circumstances associated with LOLAs of the plant due to explosions or fire, to include strategies in the following areas: (i) Fire fighting; (ii) Operations to mitigate fuel damage; and, (iii) Actions to minimize radiological release. The Commission’s statement of considerations for these requirements states that new reactor licensees must address core cooling, SFP cooling, and containment integrity by employing the same 14 general strategies that have been required through an operating license condition for current Part 50 power reactor licensees (74 FR 13926, 13957; March 27, 2009). The statement of considerations also states that the mitigation strategies employed by new reactors as required by the rule also need to account for, as appropriate, the specific