Document: NUREG-0800
Document ID: dfb421c6-cf9c-447e-ab71-dd0426ce50e5
Document Type: srp
Title: TURBINE MISSILES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340523.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.3
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Materials Engineering Branch (MTEB) Secondary - None I. AREAS OF REVIEW Plant designs are reviewed with the objective of establishing whether safety- related plant structures, systems, and components have adequate protection against the effects of potential turbine missiles. The primary review area is the evalua- tion of turbine missile generation, strike, and damage probabilities with respect to-the safety-related missile targets. The review requires input from the Auxiliary Systems Branch (ASB) on target identification and from the Structural Engineering Branch (SEB) on barrier quality. MTEB reviews the turbine disc failure analysis, fracture toughness properties; turbine startup procedures, and inservice inspection as part of its primary review responsibility for SRP Section 10.2.3. In addition, MTEB will coordinate other branches' evaluations that interface with the overall review of turbine missiles. These interfaces are as follows: SEB, upon request, reviews the turbine missile impact effects on steel and concrete barriers (e.g., penetration depth, scabbing, and structural response) as part of its primary review responsibility for SRP Section 3.5.3. Power Systems Branch (PSB) reviews the turbine overspeed protection including overspeed sensing and tripping as part of its primary review responsibility for SRP Section 10.2. Mechanical Engineering Branch (MEB) reviews the adequacy of the inservice testing program of pumps and valves as part of its primary review responsibility for SRP Section 3.9.6. Equipment Qualification Branch (EQB) reviews the seismic qualifi- cation of instrumentation and electrical system components and the environmental qualification of mechanical and electrical system components as part of its primary review responsibility for SRP Sections 3.10 and 3.11, respectively. ASB identifies structures, systems, and components to be protected from turbine missiles as part of its primary review responsibility for