Document: NUREG-0800
Document ID: 030a527a-e2e7-4d90-b34f-4662fb984153
Document Type: srp
Title: STRATEGIES AND GUIDANCE TO ADDRESS LOSS OF LARGE AREAS OF
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1331/ML13316B202.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.4
CFR Part: 
CFR Title: 

Content:
facilities that are applicable to their facility. This experience has been incorporated within the Acceptance Criteria of this SRP section. Holders of COLs or operating licenses should ensure that the strategies and guidance are translated into operating guidelines that reflect this experience. c. The guideline “approximately 100 yards or more” from a target area was not consistently interpreted by current licensees. As a general rule, the 100 yard stand-off distance should be measured from the outside edge of the target area, which in many cases will be the outside wall of a building. Tools, adapters, test equipment, instruments, and radiation monitoring equipment that are intended to be used for multiple strategies should be stored outside the target area for all strategies. Other tools, adapters, test equipment, instruments, and radiation monitoring 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. d. NEI 06-12, Revision 3 provides different time requirements for implementation of SFP external spray strategy depending on whether fuel is stored in a dispersed or non-dispersed condition in the pool, but does not define those conditions. The NRC staff considers that fuel dispersal exists when permanently discharged fuel is arranged in the defined 1 x 4 pattern, i.e., one recently discharged fuel assembly surrounded by four non-recently discharged assemblies with one on each face and without recently discharged assemblies at the corners. This guidance is consistent with guidance issued to current reactor licensees on February 25, 2005. SRP Acceptance Criteria Specific SRP acceptance criteria for the relevant requirements of the NRC’s regulations identified above are as follows for the review described in this SRP section. The SRP is not a substitute for the NRC’s regulations, and compliance with it is not