Document: NUREG-0800
Document ID: e708512f-f35c-453e-9fc1-354ab0bf12ad
Document Type: srp
Title: STEEL CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550050.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.2
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for structural analysis reviews Secondary - None I. AREAS OF REVIEW The staff will review areas relating to steel containments or to other Class MC steel portions of steel/concrete containments. The specific areas of review are as follows: 1. Description of the Containment A. The descriptive information, including plans and sections of the structure, to establish that sufficient information is provided to define the primary structural aspects and elements relied upon to perform the containment function. In particular, the type of steel containment is identified and its structural and functional characteristics are examined. The staff will review various types of steel containments, including the following: 3.8.2-2 Revision 2 - March 2007 i. Steel boiling-water reactor (BWR) containments using the pressure-suppression concept, including the Mark I (lightbulb/torus), the Mark II (over/under), and the Mark III (with horizontal venting between a centrally located cylindrical drywell and a surrounding suppression pool) ii. Steel pressurized-water reactor (PWR) containments using the pressure-suppression concept with ice-condenser elements iii. Steel PWR dry containments These containments have various geometries. The geometry most commonly encountered is an upright cylinder topped with a dome and supported on either a flat concrete base mat covered with a liner plate or on a concrete foundation built around the bottom portion of the steel shell, which is an inverted dome. Although applicable to any geometry, the specific provisions of this SRP section are best suited to the cylindrical-type steel containment, surrounded by a Category I concrete shield building. If containments with other types of geometry are reviewed, the necessary modifications to this SRP section are made on a case-by-case basis. iv. Steel components of concrete containments that resist pressure and are not backed by structural concrete (e.g.,