API Tank Design Standards

API 650 STANDARD

API 650 is the standard governing welded tanks for oil storage. It dictates tank design, fabrication, welding, inspection, and erection requirements. API 650 is widely used for tanks that are designed to internal pressures of 2.5 PSI or less and store products such as crude oil, gasoline, chemicals and produced water. Advance Tank has extensive experience with API 650 tanks ranging in diameter from 8′ – 300′ for refineries, terminals, pipeline facilities and other clients.

API 620 STANDARD

API 620 governs the design and construction of large, welded, low pressure storage tanks. These storage tanks operate at 250°F or less with an operating pressure of up to 15 PSI. API 620 Tanks are generally utilized for Liquefied Natural Gas (LNG) storage as well as other chemicals which require internal design pressures in excess of those allowed by API 650.

HiForce Portfolio

SPECIALIZED SERVICES–

• Engineering, Design, Fabrication & Erection
• API Tanks up to 360′ diameter
• Custom Tank Accessories
• Seal Installation
• Hydro Testing
• Hydro Pneumatic Testing
• Maintenance & Repair Services
• Stainless Steel Tanks

FLOATING ROOF TYPES –

• Internal & External Floating Roofs
• Pontoon
• Double Deck
• Aluminum
• Pan
• Segmented Pan

FOUNDATION & CIVIL SERVICES –

• Concrete Ringwall Foundation
• Crushed Aggregate Foundation
• Slab Foundation
• Retaining Walls & Floors
• Existing Tank Foundation Retrofitting
• More Foundation & Civil Services

ROOF TYPES –

• Cone
• Umbrella
• Open Top
• Knuckle
• Geodesic
• Flat

TANK MATERIAL TYPES –

• Carbon Steel
• Stainless Steel
• Duplex Steel

SUBCONTRACTED SERVICES –

• Tank Coatings
• Insulation
• Cathodic Protection Systems
• Leak Detection Systems
• Heat Relieving
• Strapping

The HiForce Promise: Excellence coupled with reduced lead time