A process is provided for measuring the water and sediment content of a wet stream which is predominantly non-aqueous. The process requires removing a sample of the wet stream, extracting a dry stream sample from the wet stream sample, and comparing the dielectric constants of the wet and dry streams. Leakage of any of the wet stream sample into the dry stream sample will adversely affect the comparison of dielectric constants. Accordingly, periodically the apparatus used for the process is chec...

A leak detecting method utilizes a pressure vessel for holding gas under ssure and a transparent chamber partly filled with liquid. A conduit defines a gas pathway from the vessel to a location within the chamber which is beneath the surface of the liquid. A fitting is provided for connection to a system which is to be tested and a further conduit connects the fitting through a first valve to a location within the liquid chamber, and through a second valve with the interior of the vessel. The fi...

An apparatus for detecting small changes in the location of a float, has, in combination, a signal generator for emitting a signal having a characteristic, a detector for detecting a modulated signal by producing a response signal directly related to the characteristic, a support for positioning the signal generator and the detector, and a float weighted to float at a desired depth in a selected liquid. Also included are a reservoir for holding a measuring medium, a plug for preventing condensat...

A leak diverter for positioning above a suspended ceiling is disclosed. The leak diverter can comprise a liquid collection tray comprising a flexible or substantially rigid sheet of material. The leak diverter can have a drain in flow communication with the liquid collection tray. The leak diverter can comprise a perimeter frame and can be supported by a plurality of support members. The drain can be positioned to extend through either the liquid collection tray or the side barrier and can be po...

In a leak sensor including a light-transmitting part 16 constituted by a transparent or semitransparent material, the leak sensor irradiating the light-transmitting part 16 with probe light L in a state where the light-transmitting part 16 is provided so as to face into a region subjected to leak detection 26, and detecting a leaked liquid according to a change in quantity of light L* reflected by a boundary between the light-transmitting part 16 and the region subjected to leak detection 26; th...

A method of leak detection in a pipeline, characterized by the steps of: introducing into the pipeline (w) at an opening an initially loose fitting plug (11) having at least an expandable periphery (21); adopted for inflation by means of a flexible pipe (23); providing along the length of the flexible pipe (23) tracing means (31) for detecting the position of the plug remotely; allowing the plug (11) to be driven along the pipeline by a fluid pressure differential; inflating the plug to substant...

A leak detector includes an off-center mounted metering pin cooperating with a single cross-hole in a poppet valve to accommodate adjustment of the flow rate past the metering pin by rotating the poppet valve about its longitudinal axis. A flow director, cooperating with the poppet valve, directs all flow into the leak detector directly into the line during initial flow into the leak detector. A piston, responsive to line pressure, is sized smaller in diameter than the poppet valve to cause the ...

A leak detector including at least one analysis unit connected to the inlet of a first secondary pump, a pre-evacuation set connected to an inlet coupling, the inlet of said pre-evacuation set further being connected to the outlet of said first secondary pump via a pipe provided with a first valve, wherein said pre-evacuation set comprises a second secondary pump and a mechanical primary pump connected together in series, and wherein a pipe provided with a second valve connects an intermediate p...

When an underground pipe carrying a fluid, such as a buried water-pipe, develops a leak the leak must first be located before it can be repaired. One common location method makes use of the fact that the leaking fluid often creates a noise, typically a hissing sound, which is transmitted through the ground, and although rapidly attenuated can be heard with suitable highly sensitive ground microphones and is therefore useful to field crews as a means of locating leaks. Unfortunately, the sound le...

A method of leak testing a transport vessel for radioactive material is disclosed. Tracer gas (helium) and pressurizing driving gas (nitrogen), the latter in condensed form, are introduced into the transport vessel when in open condition. The tracer gas is introduced in a plastic bag which occupies a major part of the interior of the transport vessel the through which the tracer gas diffuses at a low rate. The liquid pressurizing gas is introduced in a smaller vessel. After the transport vessel ...