ATTACHING STRUCTURE OF WATER LEVEL INSTRUMENTATION NOZZLE

PURPOSE: To provide the attaching structure of a novel water level instrumentation nozzle wherein inspection and repair of the welded part of the water level instrumentation nozzle provided on the drum of a pressure vessel can be easily performed. CONSTITUTION: A water level instrumentation nozzle i...

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Bibliographische Detailangaben
1. Verfasser:	MATSUSHITA AKITAKE
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PURPOSE: To provide the attaching structure of a novel water level instrumentation nozzle wherein inspection and repair of the welded part of the water level instrumentation nozzle provided on the drum of a pressure vessel can be easily performed. CONSTITUTION: A water level instrumentation nozzle is provided on a vessel drum 1 constituting the outer shell of a reactor pressure vessel, to which a level sensor S for measuring a water level of cooling water in the vessel drum 1 is connected. A cylindrical nozzle body 15 is inserted in a through hole 14 formed in the vessel drum 1 from the inside thereof, and the nozzle body 15 is welded from the outer face side of the vessel drum 1 and attached thereto.