Storage tanks vertical

A 26,000 gallon outdoor vertical storage tank contains benzene. The tank is not insulated, but has a dike around it tvith a volume equal to one-and-a-half times the volume of the tank. Size 15 diameter X 20. Tank does not have weak roof. Temp. = 60°F, pressure = 14.7 psia. 

In larger vertical storage tanks containing residual fuels, bottom inlet filling may sometimes be used. A non-return valve must be fitted in the filling line as close to the tank as possible. The entry position of the filling pipe into the tank in relation to the position of the draw-off connection must be carefully selected to avoid air entrainment into the oil-handling system. 

K. Vertical storage tanks should be individually diked. If nal, capacity in single dike should not exceed 25,000 bbls. Far horizontal slomge tanks, maximum is 400,000 gallons per group, with 100 between groups, or other suitable arrangement. 

Determine the cost of constructing a 500,000 gal. stainless-steel vertical storage tank in mid- 1968. 

In the catalyst preparation area where the fire occurred, aluminum alkyl and isopentane are mixed in a batch blending operation in three 8000-gallon kettles. The flow rates of components are regulated by an operator at the control room. Temperature, pressure, and liquid level within the kettles are monitored by the control room operator. The formulated catalyst is stored in four 12,000-gallon vertical storage tanks within this process unit. Aluminum alkyl is a pyrophoric material and isopentane is extremely flammable. Each vessel was insulated and equipped with a relief valve sized for external fire. 

Another explosion occurred at 11 20 A.M. as the fire spread to the formulated catalyst vertical storage tanks. Hot metal fragments from this blast severely injured four fire brigade members involved in the rescue attempt of the lead operator. They were about 60 feet away from the fire at the time of the explosion. 

Fig. 4-9 A Propane Refueling System with Vertical Storage Tank. (Source Tom Gorman Company)...

Vertical storage tanks are most commonly and uniquely used as dehydration vessels as well as desalting vessels for crude oil. The key variable for making a common storage-type tank into an oil dehydration vessel is simply time. Given enough time, most any oil-water mixture... 

To demonstrate the effectiveness of diking as a postrelease mitigation measure, an accidental release of carbon disulfide from a vertical storage tank will be evaluated. In the example, isopleths to the ERPG-2 concentration of 50 ppm (AIHA, 1992) will be considered. 

Figure 7.1 provides an illustration of the principles described above applied to both horizontal and vertical storage tanks which are located above ground. These can be compared with the diagram of a typical underground storage tank provided in Figure 7.2. 

Figure 7.1 Diagram illustrating typical horizontal and vertical storage tanks suitable for bulk storage of flammable solvents.

A) No aboveground vertical storage tank I containing a flammable liquid shall be located... 

Water flows employed to cool exposed vertical storage tanks can be calculated using as a requirement one hose line (flowing 200 gal/min) per 10 feet of tank diameter. Assuming an average tank height of 50 feet, this would give a water flow capability in excess of the reconunended rate. 

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