Behavior of a nuclear steel containment equipment hatch at large strain

Journal Article · Sun May 01 00:00:00 EDT 1988 · J. Pressure Vessel Technol.; (United States)

DOI:https://doi.org/10.1115/1.3265587· OSTI ID:6735314

Fanous, F; Greimann, L

During a severe accident, buckling of a steel containment hatch door, large deformation and ovaling of the hatch sleeve are potential causes of mismatch at the sealing surface which can result in a leakage path. A three-dimensional nonlinear finite element analysis of a typical steel containment/sleeve/hatch assembly that includes containment stiffeners, pretensioned swing bolts, and hatch door geometric imperfection is presented. The analysis was carried out to the nonlinear range up to large strains. The results indicated that the buckling load occurs at pressure, far above that which causes gross yielding of the shell plate. Although buckling of the hatch door increased the relative motions of the hatch sleeve and the hatch door, the motions remained sufficiently small to prevent leakage.

• Research Organization: Civil Engineering Dept., Iowa State Univ., Ames, IA (US)
• OSTI ID: 6735314
• Journal Information: J. Pressure Vessel Technol.; (United States), Vol. 110:2
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
36 MATERIALS SCIENCE
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
CONTAINMENT SYSTEMS
REACTOR ACCIDENTS
NUCLEAR POWER PLANTS
STEELS
MATERIAL BUCKLING
DEFORMATION
FINITE ELEMENT METHOD
GEOMETRY
NONLINEAR PROBLEMS
STRESS ANALYSIS
THREE-DIMENSIONAL CALCULATIONS
ACCIDENTS
ALLOYS
BUCKLING
CONTAINMENT
ENGINEERED SAFETY SYSTEMS
IRON ALLOYS
IRON BASE ALLOYS
MATHEMATICS
NUCLEAR FACILITIES
NUMERICAL SOLUTION
POWER PLANTS
THERMAL POWER PLANTS
220900* - Nuclear Reactor Technology- Reactor Safety
220200 - Nuclear Reactor Technology- Components & Accessories
360103 - Metals & Alloys- Mechanical Properties
990230 - Mathematics & Mathematical Models- (1987-1989)