Search results
Results from the WOW.Com Content Network
Corona discharges on the 380kV overhead power line over the Albula Pass (Switzerland) in foggy weather conditions (30 second long exposure) Coronas can generate audible and radio-frequency noise, particularly near electric power transmission lines. Therefore, power transmission equipment is designed to minimize the formation of corona discharge.
A rupture disc (burst) Pressure-effect acting at a rupture disc A rupture disc, also known as a pressure safety disc, burst disc, bursting disc, or burst diaphragm, is a non-reclosing pressure relief safety device that, in most uses, protects a pressure vessel, equipment or system from overpressurization or potentially damaging vacuum conditions.
Surge control products have been used in many industries to protect the maximum working pressure of hydraulic system for decades. Typical applications for surge relief equipment is in pipelines at pump stations, receiving manifolds at storage facilities, back pressure control, marine loading/off loading, site specific applications where pressure surges are generated by the automation system ...
Since then, they've been plagued by similar issues as the city struggles to balance the demand for water with aging, decayed pipes that threaten to burst when exposed to normal water system pressure.
Workers with the pipeline noticed pressure dropping in the line, but they increased pressure instead of searching for a leak. Trees up to 4 kilometers away were felled by the blast, and 2 locomotives and 38 passenger cars on the trains were derailed. Up to 645 people were reported killed on June 4, 1989. [81]
May 5 – A leak occurred in a relief line, at a Keystone Pipeline Terminal in Beaumont, Texas. About 18,500 gallons of crude oil were spilled. The cause seemed to be internal corrosion. [5] July 28 – A gas line explosion and fire occurred in Martin County, Texas, which injured four workers. A ditching truck hit an existing high-pressure gas ...
Overhead power lines are easiest to diagnose since the problem is usually obvious, e.g., a tree has fallen across the line, or a utility pole is broken and the conductors are lying on the ground. Locating faults in a cable system can be done either with the circuit de-energized, or in some cases, with the circuit under power.
Plastic materials can be used, but metals typically have a much higher bursting strength and so will produce more concussive force. For example, common schedule 40 1-inch (25 mm) wrought steel pipe has a typical working pressure of 1,010 psi (7.0 MPa), and bursting pressure of 8,090 psi (55.8 MPa), [ 2 ] though the pipe sealing method can ...