API 650

Module from the Storage Tank Engineering Curriculum curriculum.

Module 1 - API 650 Design Basis · Learning Objectives · 1. Apply API 650 12th Ed scope (atmospheric < 2.5 psig, < 250 F normally) · 2. Select material groups: I, II, III, IIIA, IV, V, VI by impact rating · 3. Understand Annex A (small tanks), Annex J (shop-fabricated), Annex F (>250 F) · 4. Specify Annex S (stainless steel) or Annex X (duplex stainless) for corrosive service · 5. Apply seismic design per Annex E and wind girder per Annex V · Typical Refinery Storage Tank Services

Service	Capacity (bbl)	Diameter (ft)	Height (ft)	Roof Type	Material
Crude oil	500000-1000000	250-300	48-60	IFR (internal floating)	CS SA-516-70
Gasoline/Naphtha	100000-400000	150-220	40-48	IFR or EFR	CS SA-516-70
Diesel/ULSD	100000-400000	150-220	40-48	Cone roof	CS SA-516-70
Jet fuel/Kerosene	100000-300000	120-180	32-48	Cone roof	CS SA-516-70
LPG/Propane (pressure)	10000-50000	30-60	Spherical	Sphere	SA-516-70 or 517
Sulfur (molten, 300F)	5000-50000	30-100	30-40	Cone (insulated)	SA-516-70 stress relieved
Acid (sulfuric 98%)	3000-20000	30-60	30-40	Cone	CS or alloy lined
Caustic (20-50%)	5000-30000	30-80	32-40	Cone	SA-516-70 or SS
Amine	5000-30000	30-60	32-40	Cone	SA-516-70 PWHT

Source: Storage_Tank_Engineering_Curriculum_v1.xlsx · Sheet: API 650

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