Document: NUREG-0800
Document ID: 29fa664a-a42c-4ff0-8ae1-3798f7f23c23
Document Type: srp
Title: TURBINE MISSILES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070373.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.3
CFR Part: 
CFR Title: 

Content:
based on an inspection of the material presented to see whether it is similar to that recently reviewed on other plants and whether items of special safety significance are involved. Upon request from the primary reviewer, the secondary review interface branches will provide 32 input for the areas of review stated in subsection I of this SRP section. The primary reviewer obtains and uses such input as required to assure ensure that this review procedure is complete. 33 The review procedure involves the following: 1. The plant layout drawings are is reviewed to determine the relative placement of the 34 containment and other safety-related structures, systems, and components with respect 35 to the turbine-generator unit(s). The orientation of the turbine is determined to be favorable or unfavorable according to the acceptance criteria offered in subsection II. Values of strike and damage probability are subsequently reviewed and compared with the acceptance criteria offered in subsection II. This review is focused on determining 36 if the plant layout conforms to the turbine placement and orientation recommendations outlined in Regulatory Guide 1.115. If the orientation is such that all safety-related targets are excluded from the low trajectory turbine missiles, further review in this regard P 1 N 2 i 1 P1i N j 1 P2ij P3ij 3.5.1.3-11 DRAFT Rev. 3 - April 1996 EQUATION DELETED is not necessary. This procedure also encompasses the possibility of having some safety- related targets within the strike zones when their placement is unavoidable. However, these systems must be protected against the effects of turbine missiles generated at design overspeed and destructive overspeed. As indicated in the Regulatory Guide 1.115, this condition is met if the size, placement, and/or shielding by barriers is such that the total strike and damage probability for all such targets within the strike zones is less than 10-3 per turbine failure. Adequate protection will also be