Hoses lining

The excellent properties of these fluoroelastomers come with a high price tag. Kalrez, for example, is extremely expensive ( 33—44/kg). These materials are used in automotive appHcations (seals, gaskets, fuel hose lines, engine parts, etc), where they can withstand under-hood temperatures. They are also used in equipment for oil and gas production and chemical processing. U.S. consumption in 1988 was 3100 t (76). 

Deterioration of pipe/hose lining due to chemical attack or electrostatic discharge. 

Regarding fires, water is the primary extinguishing agent, and it should be available in adequate supply and pressure at all of the locations in the plant. The layout for various types of installations and the appropriate recommendations are found in the standards of the National Fire Protection Association. Fire hydrants, hose lines, automatic sprinkler and water spray systems should all be a part of the permanent equipment facilities of the plant. 

Care should be taken in every stimulation circumstance to allow fluids to drain to the reserve pit. In the completion operation it is exceedingly difficult to accomplish this due to traffic. Because of this, the service company should provide leak free hoses, lines, and connections. Upon completion of job, the hoses should be drained to a common area for holding subsequent to introduction to the reserve pit. Every precaution should be taken to prevent accumulation of fluids on the pad proper, thereby posing a potential risk to groundwater and runoff of location. 

Chemical resistance Fluorosilicone Seals, gaskets, hose linings for liquid fuels... 

Under most normal circumstances, the boiler should be washed out with a hose line during the draining process to further avoid the risk of baked-on sludge. If the potential for boiler sludge is high, however, it... 

Drop the water level if necessary to allow for the acid and ensure that all hose lines are tied down. Begin full water recirculation. 

In practical situations, if permeation through a hose lining, for example, is being considered, and the hose is exposed externally to a cold environment (such as the sea) while hot fluid passes through the hose (e.g., hot oil in the offshore production industry), a temperature gradient — Ti will apply across the lining. To cover this situation, for a representative permeation coefficient Campion and Thomas developed from Tick s laws... 

Another name for liner. Also used with the normal meaning as in chemical plant lining, hose lining, etc. 

Hydrants should be considered as a backup water supply source to monitors and fixed fire suppression systems. Hydrants should be located on the ring main at intervals to suitably direct water on the fire hazard with a fire hose. Hydrants monitors and hose reels should be placed a minimum of 15 meters (50 ft.) from the hazard they protect for onshore facilities. Hydrants in process areas should be located so that any portion of a process unit can be reached from at least two opposite directions with the use of 76 meters (250 ft), hose lines if the approach is made from the upwind side of the fire. Offshore hydrants are located at the main accessways at the edge of the platform for each module. Normal access into a location should not be impeded by the placement of monitors or hydrants. This is especially important for heavy crane access during maintenance and turnaround activities. 

Fixed systems may be fixed nozzles or hand hose line systems. They usually range in capacity from 68 to 1,360 kgs (150 to 3,000 lbs.). Most use a high pressure nitrogen cylinder bank to fluidize and expel the dry chemical from a master storage tank. Where immediate water supplies are unavailable, fixed dry chemical systems may be a suitable alternative. 

Application of these chemicals in portable or wheeled extinguishers, hand-held hose line systems or fixed nozzle systems provides for quick fire knockdown and extinguishment. 

Portable hose lines forseaE fire protection. Yes Bond and ground aN metal tank parts. Provide shunts where required. Yes Same requirement as for cone roof tanks. None requited... 

Portable hose lines from rank standpipe for seal fire protection. Yes Yes ... 

Despite the limitations, there are sufficient advantages in the use of portable foam monitors to justify consideration for tank fire extinguishment. Some foam trucks are equipped with a 1,000 gpm (3,800 Ipm) foam monitor or snorkel articulated boom with a 500 gpm (1,900 Ipm) monitor. In addition, a 1,000 gpm (3,800 Ipm) portable monitor is recommended and can be towed behind the foam truck for use on tank or spill fires. Monitors have the advantage of fire extinguishment without close approach, resulting in less personnel hazard than the use of foam hose lines. 

For large laboratory buildings of two or more stories, standpipes should be installed in accordance with NFPA 14, Standard for the Installation of Standpipe, Private Hydrant, and Hose Systems. Hose lines of an approved type should be provided. 

Use monitors and hand-held hose lines for exposure protection as necessary, ... 

EN/ISO 4080 Rubber and plastic hoses and hose lines - determination of gas permeability 4/95... 

The first attack crew shall use the stairway to go one floor below the fire floor and connect to the standpipe outlet at this level, using department standpipe packs with a gated wye fitting. The line will then be advanced to the fire floor and one person shall be assigned to remain at the valve to adjust pressure. The next hose line placed into service will connect on the fire floor using... 

After a fire is extinguished, the water in the hose lines must be removed before the hose lines are reloaded on the fire truck. The best place to remove this water is... 

Pressure gauge internal pressure on an engine, one is provided for each hose line to ensure that proper pressure Is maintained pounds per square inch (psi) or inches of water... 

The basic equation for calculating pressure at the nozzle in a hose line is ... 

Appliance loss is a loss in pressure caused by a hose appliance being placed in a hose line. An appliance can be a device used to split one line into two smaller lines such as a gated wye, a section of pipe in... 

Which of the following conditions is NOT a concern caused by using excessive pump pressures on hose lines ... 

Two hose lines are being operated from the same pumper at a fire. One line has a fog nozzle, is 200 ft. long, and has 25 psi of friction loss per 100 ft. of hose. The second line has a hand-held solid bore nozzle, is 400 ft. long, and has 10 psi of friction loss per 100 ft. of hose. Which of the following statements is correct ... 

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