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:
oundary 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 to the P=2.5 psid. c) Pool-Swell Velocity history vs. pool ----- III.B.3.a.3 (1a) Velocity elevation predicted by the PSAM used to compute impact loading on small structures and drag on gratings between initial pool surface and maximum pool elevation and steady-state drag between vent exit and maximum pool elevation. Analytical velocity variation is used up to maximum velocity. Maximum velocity applies there-after up to maximum pool swell. PSAM predicted velocities multiplied by a factor of 1.1. d) Pool-Swell Acceleration predicted by the ---- III.B.3.a.4 (1a) Acceleration PSAM. Pool acceleration is utilized in the calculation of acceleration loads on submerged components during pool swell. Table B-1 Mark II LOCA-related hydrodynamic loads Summary table Load or Load specification Load NRC (Foot- phenomenon specification Evaluation note) clarifying footnotes 6.2.1.1.C-19 DRAFT Rev. 7 - April 1996 e) Wetwell Air Wetwell air compression is ---- II.A.2 (1b) Compression calculated by PSAM consistent with maximum pool swell elevation in B.1.b above. f) Drywell Methods of NEDM-10320 and ---- III.B.3.a.6 (1a) Pressure NEDO-20533 Appendix B. Utilized in PSAM to calculate pool swell loads. 2. Loads on Maximum bubble pressure ---- III.B.3.b (1a) Submerged predicted by the PSAM added Boundaries uniformly to local hydrostatic below vent exit (walls and basemat) linear attenuation to pool surface. Applied to walls up to a maximum pool swell elevation. 3. Impact Loads a) Small 1.35 x Pressure-Velocity Note 3 III.B.3.c.1 (1a) Structures correlation for pipes and I beams based on PSTF impulse data and flat pool assumption. Variable pulse duration. b) Large None - Plant unique load ---- III.B.3.c.6 (1a) Structures where applicable. c) Grating P drag vs. grating area Note 2 III.B.3.c.3