Apparatus for and method of determining the liquid coolant level in a nuclear reactor

Patent · Tue Oct 16 04:00:00 EDT 1990

OSTI ID:6459474

Waring, J P; Smith, R D

This patent describes an instrument for measuring liquid level within a liquid containing vessel. It comprises: an elongated body having a longitudinal axis extending into at least a portion containing a liquid coolant inventory in the liquid containing vessel and into at least a portion containing gaseous or vaporous inventory in the liquid containing vessel and the elongated body being so disposed to extend in a generally vertical direction; electrical heating means extending coaxially down the longitudinal axis of the elongated body; difference thermocouples arranged within the elongated body, each the difference thermocouple comprising a heated and unheated junction; and the electrical heating means formed of electrically conductive materials which comprise high heating material and low heating material serially disposed and located in alternate zones along the length of the elongated body, and forming a portion of an electrical current path of the electrical heating means.

• Assignee: Scandpower Inc., Bethseda, MD (USA)
• Patent Number(s): US 4592230; A
• Application Number: PPN: US s 6-514600
• OSTI ID: 6459474
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220400* -- Nuclear Reactor Technology-- Control Systems
COOLANT LOOPS
COOLING SYSTEMS
ENERGY SYSTEMS
MEASURING INSTRUMENTS
POWER REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR MONITORING SYSTEMS
REACTORS
THERMOCOUPLES