Cooling system upon reactor isolation
Description
Purpose: To prevent the increase of oxygen density in pressure suppression chamber during operation of cooling system during reactor isolation. Constitution: The suction port of a vacuum destruction valve is in communication with the gas phase portion of a pressure suppression chamber. Accordingly, if the vacuum breaking valve is opened due to the excess reduction of the pressure in the vacuum tank during operation cooling system upon reactor isolation inert state in the gas phase portion of the pressure suppression chamber flows through pipeways into the vacuum tank and returned again by a vacuum pump to the suppression chamber. Accordingly, since air containing oxygen in nuclear reactor buildings, in which turbines and vacuum breaking valves are disposed, is sucked from the vacuum breaking valve and then recycled to the inside of the pressure suppression chamber by means of the vacuum pump, the oxygen concentration in the gas phase portion of the pressure suppression chamber is not increased. (Horiuchi, T.)
Availability note (English)
Available from JAPIO. Also available from INPADOC.Additional details
Publishing Information
- Imprint Pagination
- 3 p.
- IPC:
- Int. Cl. G21C15/18.
- IPC
- Int. Cl. G21C15/18.
- Patent number
- JP patent document 63-252294/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 20057209
- Subject category
- S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- AIR; CONDENSATION CHAMBERS; DEPRESSURIZATION; ECCS; OXYGEN; PIPELINES; PRESSURE DROP; PRESSURE GRADIENTS; STEAM; VALVES
- Descriptors DEC
- CONTROL EQUIPMENT; ELEMENTS; EQUIPMENT; FLOW REGULATORS; FLUIDS; GASES; NONMETALS; REACTOR PROTECTION SYSTEMS
Optional Information
- Secondary number(s)
- JP patent application 62-85860.