Document: NUREG-0800
Document ID: a28650b3-fa03-428d-a2bd-4a27f583710b
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070484.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6
CFR Part: 
CFR Title: 

Content:
LOCA-Related Pool Dynamic Loads 115 The Mark II program to establish LOCA-related pool dynamic loads has been in existence since April 1975. Since that time, a number of different load specifications have been developed. The purpose of this appendix is to identify, in one location, those generic load specifications that the staff finds acceptable. A summary of generic loads acceptable to the NRC is provided in Table B-1. This table includes the following information: load identification, a summary of the load specification, load specification clarifying criteria and reference to the NRC NUREG section that describes the NRC specific load evaluation. The staff finds most of the generic LOCA-related pool dynamic load specifications proposed by the Mark II owners acceptable. For the few cases where the staff was unable to conclude that a proposed load was acceptable, the staff developed acceptance criteria. The criteria provide load specifications that are acceptable to the staff. The staff finds that the detailed loads specifications referenced in Table B-1, along with the criteria that further clarify these loads specifications, constitute a complete set of acceptable LOCA-related pool dynamic loads. Table B-1 Mark II LOCA-related hydrodynamic loads Summary table DRAFT Rev. 7 - April 1996 6.2.1.1.C-18 Load or Load specification Load NRC (Foot- phenomenon specification Evaluation note) clarifying footnotes A. Submerged 24 psi overpressure added to ---- II.A.1 (1b) Boundary Loads local hydrostatic below vent During Vent exit (walls and basemat) - Clearing linear attenuation to pool surface. B. Pool-Swell Loads 1. Pool-Swell Analytical Model a) Air- Bubble Calculated by the pool-swell ---- III.B.3.a.1 (1a) Pressure analytical model (PSAM) used in calculation of submerged boundary loads. b) Pool-Swell Use PSAM with polytropic ---- II.A.2 (1b) Evaluation exponent of 1.2 to a maximum swell height which is the greater of 1.5 vent submergence or the evaluation corresponding