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:
d also closes, depending upon also close under system pressure, fluid pressure, fluid flow, and temperature the valve's safety functions. flow, and temperature conditions. conditions. CHECK VALVES 11. In the System, independence is 11.1. Tests will be performed on the 11.1. The test signal exists only in the Class 1E 11 provided between Class 1E Divisions, and System by providing a test signal in only one Division under test in the System. between Class 1E Divisions and non- Class 1E Division at a time. Class 1E equipment. 11.2. In the System, physical separation or INDEPENDENCE FOR ELECTRICAL AND I&C SYSTEMS 11.2. Inspection of the as-installed Class 1E electrical isolation exists between these Class 1E Divisions in the System will be Divisions. Physical separation or electrical performed. isolation exists between Class 1E Divisions and non-Class 1E equipment. 14.3-63 DRAFT Rev. 0 - April 1996 1. BASIC CONFIGURATION ITAAC This ITAAC is contained in the buildings and most of the systems described in Tier 1. The verification consists of an inspection of the system functional arrangement in its final as-built condition, and also includes, and is limited to, verification of welding, environmental qualification, seismic qualification and motor operated valves (MOVs). The basis for selecting these aspects included their importance to safety as well as past experience with construction and operating problems. a. FUNCTIONAL ARRANGEMENT The verification consists of an inspection of the system functional arrangement of the SSCs in its final as-built condition at the plant site and includes the elements of the design descriptions and the system figures. This functional arrangement inspection verifies, using as-built system drawings, design documentation, and in-situ plant walkdowns, that the as-built facility is in conformance with the certified design and applicable regulations. Unless specified explicitly, the figures are not indicative of the scale, location, dimensions,