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DESIGN OF LPG VESSELS :
As per industry preference, the design pressure of LPG vessels shall not be less than the vapor pressure of the stored product as well as the maximum product design temperature shall be maintained.
Moreover, the additional pressure resulting from the partial pressure of noncondensable gases in the vapor space and the hydrostatic head of the product at maximum fill will also be considered.
In the forefront, both a minimum design temperature and a maximum design temperature shall be specified. In the forefront, both a minimum design temperature and a maximum design temperature shall be specified.
LPG STORAGE VESSELS AND RELATED PIPING SOLUTION:
At first, spill containment shall be considered for all locations Besides, the ground under and surrounding a vessel used to store LPG shall be graded to drain any liquid spills to a safe area away from the vessel and piping.
However, in case diking around the vessel is to be used for spill containment, the diked area shall be designed according to the requirements.
Likewise, grading of the area under and surrounding the vessels shall direct any liquid leaks or spills to the edge of the diked area.
Additionally, the grading shall be at a minimum of 1% slope. Within the diked area, grading should cause spills to accumulate away from the vessel and any piping located within the diked area.
PIPING REQUIREMENTS:
To illustrate, the piping framework shall be a seamless, electric-resistance-welded, or submerged-arc-welded pipe. Pipe to be used in piping applications of 2 in. or smaller shall be seamless.
In addition, the number of joints of any type between the vessel and the first block valve shall be minimized.And then, the welded joints shall be used where practical.
At the bottom, we shall pay importance that the number of flanged joints shall be minimized.
Then, the pressure tubing shall be constructed of steel. In case the tubing is exposed to a corrosive atmosphere, stainless steel shall be used.
FIRE PROTECTION:
Specifically, the fire protection provisions shall be based on the safety analysis of local conditions, exposure from or to other sites, availability of water supply, and effectiveness of fire brigades and fire departments.
