Hoses connection

A device that can be fitted to a tank truck to prevent anyone from driving it away while a hose is connected is described in Reference 2. A plate is fixed in front of the hose connection. To connect the hose, this plate has to be moved aside, and this applies the brakes. Reference 3 describes a special type of hose that seals automatically if it breaks there ai e also other types. 

Fortunately in this case the two materials did not react. People who have emptied acid into alkali tanks have been less fortunate. A plant received caustic soda in tank cars and acid in tank trucks. One day a load of caustic soda andved in a tank truck. It was labeled Caustic Soda, the delivery papers said it was caustic soda, and the hose connections were unusual. But the operators had a mind-set (see Section 3.3.5) that anything in a tank truck was acid, and they spent two hours making an adaptor to enable them to pump the contents of the tank truck into the acid tank. 

Many suppliers of liquefied gases state that they use different hose connections for liquid oxygen and liquid nitrogen so mistakes cannot arise. However, mistakes have occurred, possibly because of the well-known tendency of operators to acquire adaptors. 

AS—Air Supply BD—Blowdown BF—Blind Flange CBD—Continuous Blowdown CD—Closed Drain CH-O—Chain Operated CSO—Car Seal Open CSC—Car Seal Closed DC—Drain Connection EBD—Emerg. Blowdown Valve ESD—Emerg. Shutdown FC—Fail Closed FO—Fail Open HC—Hose Connection IBD—Intermittent Blowdown LO—Lock Open ML—Manual Loading NC—Normally Closed NO—Normally Open OD—Open Drain... 

Filling pipes should be as short as possible and free from sharp bends. The terminal should be in a convenient position to allow easy coupling of the vehicle hose connection, wherever possible within 5 meters (15 ft) of the hard standing for vehicle delivery. The most suitable height for a filling pipe is about 1 m (3 ft) above ground level and clear of all obstructions. 

There are various types of end fittings for both piping connection side and hose connection side of hose fittings. Figure 40.39 shows commonly used fittings. 

The top hose connection point is usually the level controller. 

Regularly check equipment for signs of leaks, e.g., at hose connections replace damaged or worn items. Usually fee system is pre-tested with, e.g., nitrogen. 

The solvent reservoir is a storage container made of a saterial resistant to chemical attack by the mobile diase. In its simplest fora a glass jug, solvent bottle or Erlenmeyer flask with a cap and a flexible hose connection to the pump is adequate. The PTFE connecting hose is terminated on the solvent side with a 2 micrometer pore size filter to prevent suspended particle matter from reaching the pump. In more sophisticated instruments the solvent reservoir may also be Cjquipped for solvent degassing, as... 

This component consists of a housing with two fittings for the hose connections to the pressure sensor and to the lower suds container. The inner volume of the component is divided by an elastic membrane with a weight in the middle. A bore in the weight allows for the exchange of air between the chambers. Measuring of the water level is not affected because the bore always allows for pressure compensation. 

Op moves Cl drum with hose connected Op moves Cl drum w/o closing isolation valve... 

A typical beverage system contains a 7.75-gal beverage bottle, a 5-lb bottle of liquefied C02, and a regulator set at 9 psig. The regulator is connected directly to the C02 bottle, and a 0.5-in (internal diameter) plastic hose connects the regulator to the beverage bottle. The liquefied C02 saturation vapor pressure is 800 psia. Assume a temperature of 80°F. 

Making Incorrect Assembly Impossible Plants should be designed so that incorrect assembly is difficult or impossible. For example, compressor valves should be designed so that inlet and exit valves cannot be interchanged hose connections of different types or sizes should be used for compressed air and nitrogen. 

Monitors are considered the primary manual water delivery device for hydrocarbon facilities, while hydrants and hose reels are considered secondary. Monitors are an initial manual fire suppression device that can be activated by operators with limited fire fighting training or experience. Use of hydrants and hoses usually require additional manpower and previous training. The use of a fire hose however, provides for more flexibility in the application of water sprays and where it may be needed when it is impractical to install a monitor. Monitors are usually placed at the process areas, while hydrants are placed at the perimeter roads, accessible to mobile apparatus. Most monitor pipe connections may also be fitted with fire hose connections. 

The surface slope at the placement of all hydrants, monitors and hose reels should be slightly away from the device itself so water will drain away and prevent corrosion effects. Where automobile traffic may be prevalent, protective post or railing should be provided to prevent impacts to the devices. The protective barriers should not affect the hose connection, use of hoses or obscure the spray from monitors. The posts should be provided with highly visible markings or reflective paint. 

Fire fighting equipment should be mounted at heights that are easily accessible by the average person. This includes portable fire extinguishers, hose connections to fire hydrants, access to emergency shutoff valves, emergency stop/ESD push buttons, etc. 

Functional characteristics of the employees. The wearing of respiratory devices, except for simple dust masks, can be both physically and psychologically demanding. Even a cartridge respirator without any requirement for a hose connection can be restrictive, the more so in the presence of any obstruction to breathing by a clogged filter. Indeed, to some sus-... 

We normally reuse cassette pieces, although each part is checked for damage. The most common causes of attrition are cracks in the center rings, and loose hose connections on the cassette base. We check each base with a metal hose connector to insure that the fit is still tight. These hose connectors were ob-... 

Hydrants equipped with monitors should have hose gate valves provided on the hose connections. Hydrants accessible to fire trucks should be equipped with compatible pumper connections as well as same type as public fire department. The pumper connection should face the roadway. 

The 2V2-in (5-cm) hose connections on the hydrant should be located so that the distance between the bottom of the connections and finished grade is... 

Existing compatibility with fixed water systems can be modified to allow for the injection of foam from a mobile foam unit by providing hose connection downstream of the system s alarm check valve. A check valve should be provided in the foam injection line as part of this modification. 

Break near where hose connects to building... 

Hose connection about 75 yards from heat exchanger... 

Before starting engine, check for signs of coolant leakage such as color stains near hose connections and coolant spots on floor or driveway, etc. 

Inspect hoses. Tighten all hose connections, including those to the expansion tank, to protect against coolant loss. 

Capital cost for the liquid-phase system is estimated based on using two pressure vessels on a prepiped, prewired skid, no installation included. Capital cost for the vapor-phase system is based on using two to four skid-mounted reusable carbon vessels with hose connections, initial fill of carbon, sizes of 400 lb, 2000 lb, and 10,000 lb as required for a rated flow rate at a 5-inch water pressure drop or less. 

After filtering the mixture of sample and organic solvent, the hose connected from the water aspirator to the flask under the Buchner funnel should first be carefully disconnected before shutting off the water source to prevent possible backflow of tap water into the flask, which would contaminate the sample. Prior to evaporation, the solvent waste reservoir should be empty, clean, and dry. Evaporation should be started slowly at reduced pressure to avoid the boiling over of solvent and samples. If by chance the polyphenolic extract boils over into the waste reservoir, immediately release the applied vacuum and transfer the extract back to the original boiling flask. If this is not satisfactory and contamination is a possibility, extraction should be performed again with a new sample. 

CNG fuel dispensers come under the same siting requirements as CNG storage containers with the additional requirement that the location where the dispensing hose connects to the vehicle shall be 3 m (10 ft) or more from adjoining property lines, buildings, the nearest public street or sidewalk, or any source of ignition. The fill location point shall also be at least 1 m (3 ft) from any CNG storage container. 

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