154.438—Design vapor pressure.
(a)
If the surface of an independent tank type A are mostly flat surfaces,the Po must not exceed 69 kPa gauge (10 psig).
(b)
If the surfaces of an independent tank type A are formed by bodies of revolution, the design calculation of the Po must be specially approved by the Commandant (CG-522).
[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]