Closure hold-down system for a reactor vessel
US4356144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1979 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | Jun 25, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B5/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A closure hold-down system for a prestressed concrete reactor vessel is disclosed which employs a concrete plug having an annular liner thereon and adapted to be received within the upper open end of a cavity in the reactor vessel. A prestressed concrete retaining ring is mounted on the reactor vessel concentric to the plug through a plurality of circumferentially spaced prestressed tendons anchored directly to the reactor vessel, and engages the concrete plug so that pressure forces acting on the plug from within the cavity are transmitted directly from the plug to the prestressed retaining ring through a contact surface therebetween. An omega seal is disposed between the closure plug and a cavity liner to prevent escape of fluid pressure from the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.