Fuel leaks

In addition, they are usually constructed without isolation valves on the fuel supply lines. As a result the final connection in the pipework cannot be leak-tested. In practice, it is tested as far as possible at the manufacturer s works but often not leak-tested on-site. Reference 32 reviews the fuel leaks that have occurred, including a major explosion at a CCGT plant in England in 1996 due to the explosion of a leak of naphtha from a pipe joint. One man was seriously injured, and a 600-m chamber was lifted off its foundations. The reference also reviews the precautions that should be taken. They include. selecting a site where noise reduction is not required or can be achieved w ithout enclosure. If enclosure is essential, then a high ventilation rate is needed it is often designed to keep the turbine cool and is far too low to disperse gas leaks. Care must be taken to avoid stagnant pockets. 

Denver, CO, USA, Bulk Storage Facility, Fire fuel leak at fuel pump ignited by motor... 

El Tablazo, Lake Maracaibo, Venezuela, Chemical Plant Explosion/Fire Fuel leak during truck transfer operations caused storage vessels to BLEVE... 

The most obvious source a gas accumulation is a fuel leak. Other rare losses have occurred due to lubrication failures, causing the equipment to over heat, with subsequent metal fatigue and disintegration. Once disintegration occurs heat release from the combustion chamber will occur along with shrapnel and small projectiles which will be thrown free from the unit from inertia momentum of the rotating device. 

Because benzene is a constitute of gasoline and some other fuels, and because it is so volatile, virtually all of us are exposed, almost continuously, to a certain level in the air we breathe. In some cases, because of fuel leaks and spills, ground waters and surface waters have become contaminated with benzene. What can be said about the threats to health, if any, we all face from these relatively low levels of exposure through our environment ... 

Accidental exposure of a pilot during a fuel leak to JP-4 at levels estimated to be between 3000 and 7000 ppm produced signs of neurological intoxication, but cardiovascular and pulmonary function appeared normal on clinical examination. The pilot had a staggering gait, mild muscular weakness, decreased responsiveness to painful stimuli, and slight slurring of speech. The effects were not evident 36 hours after exposure. 

Leakage past diesel fuel injection pump plunger in worn equipment may occur can result in hot restart problems whereby fuel leaks past the injection plunger in hot equipment restarting may be impossible until the engine cools down. 

Meanwhile, Sheriff Gus Anglin of Van Buren County, who suffered acid burns in a fuel leak two years ago, had begun alerting residents within four miles of the silo that they might have to leave their homes. 

Command was mobilized and arrived at the site in the early morning hours. Two members of the team entered the access chamber to the silo and started to go into the silo proper to try to con-tori the fuel leak. 

Another scenario where large quantities of flammable mixtures may be generated involves slow fuel leaks without ignition in locations where adequate ventilation is not provided. Slow leaks can occur at any of the fittings in the fuel system (from vibration, accident damage, or improper installation or repair), from defective regulators or faulty valves. Low rate fuel releases may be difficult to locate, depending on the rate of fuel release. Their existence will be readily... 

Murphy, M., et aL, Extent of Indoor Flammable Plumes Resulting from CNG Bus Fuel Leaks, SAE Paper No. 922486, Society of Automotive Engineers, Warrendale, Pa., 1992. 

It is important to be sure that all fuel and oxidant lines and their associated connectors within the instrument are in good condition, because virtually no instrument detects automatically slow fuel leaks which could cause a build up of an explosive gas mixture within the instrument casing. Obviously piping and connectors external to the instrument must also be in sound condition. 

It is advisable to check all gas lines, both within and external to the spectrometers, on a regular basis for leaks. Fitting fuel gas sensors which would automatically provide early warning even of very slight fuel leaks is a more reliable way of tackling this potential, although hopefully rare, problem. 

Infrared Television Catches Rocket-Fuel Leaks, Machine Design, 38 16 (February 17, 1966). 

Corrosion can also occur in fuel and fertilizer storage tanks. Corrosion of tank bottoms, walls, roofs, and roof structures can pose a danger to their structural integrity. Corrosion can result in leaks resulting in loss of valuable product or soil pollution and pollution of water around the storage tank. Fuel leaks and soil pollution must be prevented in a farm environment where farm products depend on good soil quality. 

Hydrogen sensors are particularly interesting for the emerging fuel cell vehicle market. There are also applications for detection of combustion gases for fuel leak detection in spacecraft, automobiles and aircraft, fire detectors, exhaust diagnosis and emissions from industrial processes (Baranzahi... 

Figure 15.8 shows that a fuel leak somewhere on the facility is expected to occur once every 2 years air will always be present the probability of an ignition source being present is one in 20. Hence the overall chance of a fire is one in 40 years. 

Diesel, gasoline, and jet fuel leaking from a pipeline in Elmira, California... 

Asphalts with fuel-resistant bitumen are used in places where fuel leaks are expected (airport aprons, gas stations, parking areas, etc.). 

All the fuel handling equipment of V-392 reactor plant (in-plant transport packing set for fresh and spent fuel, leak-tight bottles, bottles of defective assembly detection system) have the cells for fuel assemblies made of hexahedral tubes. This measure provides for improvement of nuclear safety under accident situations and also prevents mechanical damage of fuel assembly during its installation and withdrawal from the fuel handling equipment. 

The use of the individual fuel channel greatly increases operating flexibility because the fuel bundle can be separately orificed and thus the reload fuel design can be changed to meet the newest requirements and technology. The channels also permit fast in-core sampling of the bundles to locate possible fuel leaks. 

The mission following Columbia s Hubble mission, an Atlantis visit to the ISS in April 2002, was postponed for several days due to a major fuel leak that was fixed just in time to avoid the mission s outright cancellation. Two months later, the entire... 

Shuttie Atlantis visit to the ISS almost cancelled because of a major fuel leak. 

Dr. Michael R. Swain University of Miami, Fuel Leak Simulation, proceedings of the 2001 DOE Hydrogen Program Review. 

There were a number of incidents in the years before XV230 which should have raised awareness of the fire risks inherent in fuel coupling leaks. There was a prevailing belief that fuel coupling seals should be left undisturbed because replacement might increase the number of fuel leaks by disrupting the system. 

There had been several other incidents of fuel leaks, damaged fuel pipe seals, and failure of the SCP ductwork, from which clear lessons should have been learned. However, it appeared no one was taking a wide view of these incidents, which were each treated as independent one-off events. 

Which one of the following isotopes (a-d) would be most likely to be found in the reactor pool water as a result of a fuel leak, according to Suspected Fission Product Leak (UWNR 152) ... 

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