Abstract: A hot water tempering system tempers the output of a hot water storage tank by mixing that output with a cold water flow in a defined ratio to produce a flow of water at a steady intermediate temperature. The system comprises a bypass line connectable between an inlet line and an outlet line of the storage tank, and a proportional flow controller for controlling the relative water flow rates through the tank and through the bypass line. The flow controller may be positioned on the inlet line and the bypass line, or on the outlet line and the bypass line. The tempering system allows the temperature of water in the storage tank to be maintained near the boiling point for killing organisms, but at the same time ensures that water leaves the system at a temperature sufficiently low to be safe for human use.

Abstract: An instrumentation probe for measuring and recording one or more physical parameters within a fluid duct, such as a nuclear reactor fuel channel, comprises one or more sensors responsive to the parameters to be measured and recorded, each sensor actuating a scribe which cooperates with a recording chart. The recording chart is a drum, disc, tape or like recording device, and is volume driven at a constant speed by an impeller responsive to the fluid flow. No connections to external instrumentation are required.

Abstract: An instrumentation probe for measuring and recording one or more physical parameters within a fluid duct, such as a nuclear reactor fuel channel, comprises one or more sensors responsive to the parameters to be measured and recorded, each sensor actuating a scribe which cooperates with a recording chart. The recording chart is a drum, disc, tape or like recording device, and is volume driven at a constant speed by an impeller responsive to the fluid flow. No connections to external instrumentation are required.