Pressure vessel for nuclear reactor
A pressure vessel, containment or burst shield for a nuclear reactor has a substantially circular cover surmounting the cylindrical shell of the vessel. It consists of a plurality of circular segments arranged concentrically and stressed inwardly by annular prestressing means. The outer segments and preferbly all of the segments are provided on the upper surface with upwardly open circular grooves receiving the prestressing arrangement. The latter can comprise an outwardly open channel-shaped (U-section) supporting member receiving the stressing cables and means for transferring the radial stress of the annular stressing arrangement to the ring segment. The latter means may be wedges inserted between the support and a wall of the groove after the stressing arrangement has been placed under stress, e.g., by hydraulic means for spreading the annular stressing arrangement.
- Assignee:
- Siempelkamp Giesserei KG
- Patent Number(s):
- US 4124447
- OSTI ID:
- 6764181
- Country of Publication:
- United States
- Language:
- English
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