STEAM GENERATOR SLUDGE LANCE APPARATUS

A sludge lance for a tube and shell steam generator that has a central divider plate that extends substantially the length of a central tube lane substantially bisecting a hand hole through which the tube lane can be accessed. The sludge lance has a nozzle with a spring biased, reciprocally movable...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	HAWKINS, Phillip J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DECONTAMINATION ARRANGEMENTS THEREFOR HEATING LIGHTING MECHANICAL ENGINEERING METHODS OF STEAM GENERATION NUCLEAR ENGINEERING NUCLEAR PHYSICS PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT STEAM BOILERS STEAM GENERATION TREATING RADIOACTIVELY CONTAMINATED MATERIAL WEAPONS
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Beschreibung
Zusammenfassung:	A sludge lance for a tube and shell steam generator that has a central divider plate that extends substantially the length of a central tube lane substantially bisecting a hand hole through which the tube lane can be accessed. The sludge lance has a nozzle with a spring biased, reciprocally movable plunger that extends against the divider plate and is locked in position by a stream of high pressure cleaning fluid that traverses the nozzle and exits through jets to clean sludge from between the tubes. An alignment tool with a swing arm indexes the jets to assure they are properly aligned with the tube rows and spaced from the divider plate.