Document: NUREG-0800
Document ID: f03d2c71-27a1-41fd-9362-1e62c6142e13
Document Type: srp
Title: Containment Systems and Severe Accidents (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070653.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.11
CFR Part: 
CFR Title: 

Content:
rion. Rather, verify the existence of ASME Code-required design documents (e.g., design specifications or design reports) that are prepared by the COL licensee. 3. The turbine building DD may not need structural drawings (the DCD Tier 2 does not contain turbine building drawings) because it is non-safety related. For the boiling water reactors (ABWR and SBWR) that use the main steam line and condenser as an alternate leakage path for fission products, the DCD Tier 2 should include a description of the need for the turbine building to withstand a UBC Zone 3 level earthquake, and the turbine building should not use a dual-system or a concentric system design. 4. The building DD should specify the embedment depth (from the top of the foundation to the finished grade), and an ITAAC should verify it. 5. Design descriptions for building structures should provide enough dimensions for the COL applicant or licensee to develop dynamic models for the seismic analyses. Examples of these dimensions include overall building dimensions, thickness of walls and floor slabs, thickness of foundation mat, etc. 6. Code boundary primary containment should be defined. II. PROTECTION AGAINST HAZARDS 1. Internal flooding - features such as divisional walls, fire doors, watertight doors, and penetrations will be included in the DDs and ITAAC. 2. External flooding - features such as thickness of walls and protection features for penetrations below the flood level will be included in the DD and ITAAC. The waterproof coating of the exterior walls will not be included because the wall thickness is DRAFT Rev. 0 - April 1996 14.3-58 being relied upon to prevent in-leakage. Also, site parameters should be specified in the DCD. 3. Fire barriers - the fire rating of divisional walls, floors, doors, and penetrations will be included in the DD and ITAAC. Fire detection and suppression will be addressed in the fire protection ITAAC. 4. External events (tornados, wind, rain and snow) - these loads will