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Title: Fluid sampling system for a nuclear reactor

Abstract

A system of extracting fluid samples, either liquid or gas, from the interior of a nuclear reactor containment utilizes a jet pump. To extract the sample fluid, a nonradioactive motive fluid is forced through the inlet and discharge ports of a jet pump located outside the containment, creating a suction that draws the sample fluid from the containment through a sample conduit connected to the pump suction port. The mixture of motive fluid and sample fluid is discharged through a return conduit to the interior of the containment. The jet pump and means for removing a portion of the sample fluid from the sample conduit can be located in a shielded sample grab station located next to the containment. A non-nuclear grade active pump can be located outside the grab sampling station and the containment to pump the nonradioactive motive fluid through the jet pump.

Inventors:
 [1];  [1]
  1. (Monroeville, PA)
Publication Date:
Research Org.:
Westinghouse Electric Corp
OSTI Identifier:
869619
Patent Number(s):
US 5367546
Assignee:
Westinghouse Electric Corporation (Pittsburgh, PA) OAK
DOE Contract Number:
AC03-90SF18495
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fluid; sampling; nuclear; reactor; extracting; samples; liquid; gas; interior; containment; utilizes; jet; pump; extract; sample; nonradioactive; motive; forced; inlet; discharge; ports; located; outside; creating; suction; draws; conduit; connected; mixture; discharged; return; means; removing; portion; shielded; grab; station; non-nuclear; grade; active; fluid sampling; return conduit; fluid sample; reactor containment; nuclear reactor; sample fluid; located outside; jet pump; fluid samples; motive fluid; discharge ports; sampling station; extracting fluid; /376/

Citation Formats

Lau, Louis K., and Alper, Naum I. Fluid sampling system for a nuclear reactor. United States: N. p., 1994. Web.
Lau, Louis K., & Alper, Naum I. Fluid sampling system for a nuclear reactor. United States.
Lau, Louis K., and Alper, Naum I. Sat . "Fluid sampling system for a nuclear reactor". United States. doi:. https://www.osti.gov/servlets/purl/869619.
@article{osti_869619,
title = {Fluid sampling system for a nuclear reactor},
author = {Lau, Louis K. and Alper, Naum I.},
abstractNote = {A system of extracting fluid samples, either liquid or gas, from the interior of a nuclear reactor containment utilizes a jet pump. To extract the sample fluid, a nonradioactive motive fluid is forced through the inlet and discharge ports of a jet pump located outside the containment, creating a suction that draws the sample fluid from the containment through a sample conduit connected to the pump suction port. The mixture of motive fluid and sample fluid is discharged through a return conduit to the interior of the containment. The jet pump and means for removing a portion of the sample fluid from the sample conduit can be located in a shielded sample grab station located next to the containment. A non-nuclear grade active pump can be located outside the grab sampling station and the containment to pump the nonradioactive motive fluid through the jet pump.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}

Patent:

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  • A system of extracting fluid samples, either liquid or gas, from the interior of a nuclear reactor containment utilizes a jet pump. To extract the sample fluid, a nonradioactive motive fluid is forced through the inlet and discharge ports of a jet pump located outside the containment, creating a suction that draws the sample fluid from the containment through a sample conduit connected to the pump suction port. The mixture of motive fluid and sample fluid is discharged through a return conduit to the interior of the containment. The jet pump and means for removing a portion of the samplemore » fluid from the sample conduit can be located in a shielded sample grab station located next to the containment. A non-nuclear grade active pump can be located outside the grab sampling station and the containment to pump the nonradioactive motive fluid through the jet pump. 1 fig.« less
  • A nuclear reactor shut-down system is described which comprises a fluidic vortex valve for releasably maintaining a liquid neutron poison outside of the reactor core, the poison being contained by a reservoir and biased by pressure for flow into poison tubes within the reactor. The upper ends of the poison tubes communicate with the supply port of the vortex valve. A continuous gas flow into the control port maintains normal controlled operation. Shut-down is effected by interruption of the control input. One embodiment comprises three groups of poison tubes and one vortex valve associated with each group wherein shut-down ismore » effected by poison release in two out of the three groups. Preferably, each vortex valve comprises three control ports which operate on a ''voting'' or two-out-of-three basis. (Official Gazette)« less