Method for in-core instrumentation withdrawal from the core of a pressurized water reactor
US9478320B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Aug 18, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Mar 16, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of removing the upper internals assembly from a nuclear reactor pressure vessel for refueling that simultaneously disconnects two or more of the in-core instrument thimble assemblies from the reactor vessel penetrations through which their signal cables extend. The signal cables are connected to the penetrations with an electrical connector that supports the two or more in-core instrumentation thimble assembly signal leads. Before the electrical connector is disconnected, water in the vessel is lowered below the connection so that the process is performed in a dry environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.