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Title: DEVICE FOR CONTROLLING INSERTION OF ROD

Abstract

A device for rapidly inserting a safety rod into a nuclear reactor upon a given signal or in the event of a power failure in order to prevent the possibility of extensive damage caused by a power excursion is described. A piston is slidably mounted within a vertical cylinder with provision for an electromagnetic latch at the top of the cylinder. This assembly, with a safety rod attached to the piston, is mounted over an access port to the core region of the reactor. The piston is normally latched at the top of the cylinder with the safety rod clear of the core area, however, when the latch is released, the piston and rod drop by their own weight to insert the rod. Vents along the side of the cylinder permit the escape of the air entrapped under the piston over the greater part of the distance, however, at the end of the fall the entrapped air is compressed thereby bringing the safety rod gently to rest, thus providing for a rapid automatic insertion of the rod with a minimum of structural shock.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4273892
Patent Number(s):
2855899
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-008357
NSA Number:
NSA-13-008357
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PATENTS; AIR; CONFIGURATION; CONTROL SYSTEMS; CYLINDERS; ELECTROMAGNETIC FIELDS; ELECTROMAGNETISM; FAILURES; MACHINE PARTS; PLANNING; POWER; PRESSURE; REACTOR CORE; REACTORS; RODS; SAFETY; SIGNALS; SLITS; TRAPS; WEIGHT

Citation Formats

Beaty, B.J. DEVICE FOR CONTROLLING INSERTION OF ROD. United States: N. p., 1958. Web.
Beaty, B.J. DEVICE FOR CONTROLLING INSERTION OF ROD. United States.
Beaty, B.J. Tue . "DEVICE FOR CONTROLLING INSERTION OF ROD". United States.
@article{osti_4273892,
title = {DEVICE FOR CONTROLLING INSERTION OF ROD},
author = {Beaty, B.J.},
abstractNote = {A device for rapidly inserting a safety rod into a nuclear reactor upon a given signal or in the event of a power failure in order to prevent the possibility of extensive damage caused by a power excursion is described. A piston is slidably mounted within a vertical cylinder with provision for an electromagnetic latch at the top of the cylinder. This assembly, with a safety rod attached to the piston, is mounted over an access port to the core region of the reactor. The piston is normally latched at the top of the cylinder with the safety rod clear of the core area, however, when the latch is released, the piston and rod drop by their own weight to insert the rod. Vents along the side of the cylinder permit the escape of the air entrapped under the piston over the greater part of the distance, however, at the end of the fall the entrapped air is compressed thereby bringing the safety rod gently to rest, thus providing for a rapid automatic insertion of the rod with a minimum of structural shock.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {10}
}