Document: NUREG-0800
Document ID: 339b5072-d5b1-47d7-9002-e7b942ab753b
Document Type: srp
Title: II.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070311.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.3.8
CFR Part: 
CFR Title: 

Content:
equirements are adequate is shown in Table 2. Tornado missiles and other types of missiles are specified in accordance with SRP Section 3.5.1 Sections 3.5.1.1 through 3.5.1.6.18 3.5.3-3 DRAFT Rev. 2 - April 1996 Barrier thicknesses less than those listed in Table 1 may be used, provided that sufficient justification (including test data) are is presented to support them, in 19 which case they will be reviewed on a case-by-case basis. For turbine missile barriers, penetration and scabbing predictions should be based on empirical equations such as the modified NDRC formula (Ref. 3) or the results of a valid test program. b. In Steel The results of tests conducted by the Stanford Research Institute on the 20 penetration of missiles into steel plates are summarized by W. B. Cottrell and A. W. Savolainen in "U.S. Reactor Containment Technology" (Ref. 4). The equations presented in Reference 4 are acceptable. Other equations such as the Ballistic Research Laboratory formula described in Reference 5 may be used, provided the results are either comparable to those referenced above or are validated by penetration tests. c. In Composite Sections For composite or multi-element missile barriers, procedures for prediction of local damage are acceptable if the residual velocity of the missile perforating the first element is considered as the striking velocity for the next element. For determining this residual velocity, the equations presented by Recht and Ipson (Ref. 6) are acceptable when the first barrier of a multi-element missile barrier is steel. When the first barrier is concrete, procedures are reviewed on a case-by- case basis. 2. For Overall Damage Prediction The response of a structure or barrier to missile impact depends largely on the location of impact (e.g., midspan of a slab or near a support), on the dynamic properties of the target and missile, and on the kinetic energy of the missile. In general, the assumption of plastic collisions is acceptable, where all of