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. ASUS GeForce® GTX 660 DirectCU TOP: 1085MHz TOP overclocked, 20% cooler, 3X quieter TOP-selected 1085MHz cores run 105 MHz higher than reference for smoother gameplay. DirectCU achieves 20% lower temps with twice the dissipation area and 6X greater airflow than conventional design. API STD 660, 9th Edition, March 2015 - Shell-and-Tube Heat Exchangers This standard specifies requirements and gives recommendations for the mechanical design, material selection, fabrication, inspection, testing, and preparation for shipment of shell-and-tube heat exchangers for the petroleum, petrochemical, and natural gas industries.
Many questions addressed to MGT Inc. ask for comparisons of API 660 with the TEMA Standards.Api 660 Latest Edition Version
EXCLUDED FROM THE SCOPE OF API 660.The scope of API 660 excludes vacuum-operated steam surface condensers and feedwater heaters.
STANDARDS NOT IN CONFLICT.Readers should be aware that these two standards are not in conflict with each other. Indeed, Paragraph 4.2 of API 660 requires construction to conform to TEMA Class R, unless the purchasers specifies another TEMA class.
CONSTRUCTION CODE REQUIREMENTS. Because API 660 is an international standard, it deviates from the TEMA requirement for construction to the ASME Boiler and Pressure Vessel Code (ASME Code), providing instead in its Paragraph 4.1 that the pressure design code shall be specified or agreed by the purchaser.
TUBE-TO-TUBESHEET JOINTS. With respect to tube-to-tubesheet joining, Paragraph 7.6.7 has three classifications of joints:
Strength-Welded Only
Strength-Welded and Expanded
Seal-Welded and Expanded
PARTIAL STRENGTH WELDS NOT COVERED. Users should note that API 660 does not cover Partial-Strength Welded joints as defined in Paragraph UW-20 of Section VIII Division 1 of the ASME Code.
EXPANDED TUBE-TO-TUBESHEET JOINTS. Paragrah 9.10 Tube-to-tubesheet joints subparagraph 9.10.1 of API 660 states, 'If roller expanded joits are utilized, the tube wall thicknes reduction shall be in accordance with Table 4.' Table 4 provides maximum allowable wall thickness reductions of 8% for carbon steel and low alloy (9% chromium) and non-work hardening non-ferrous tubing such as admiralty brass, 6% for stainless and high-alloy and 5% for titanium and work-hardening non ferrous materials. The table allows a further increase of 2% when agreed by the purchaser.
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EXPLOSIVE EXPANDING, HYDROEXPANDING, HYBRID EXPANDING. API 660 does not discuss Explosive Expanding, Hydroexpanding or Hybrid Expanding but does not specifically exclude these processes. For such processes we have found that the maximum wall reductions listed in API Table 4 apply as well.ANNULAR GROOVES. API 660 does not address annular groove widths and depths, requiring annular grooves only to be square-edged, concentric and free from burrs.
PRESSURE TESTING. API Paragraph 10.3 Pressure testing covers pressure testing. Unlike TEMA Paragraph 1.31 STANDARD HYDROSTATIC TEST, API 10.3 does not specify a hold time for the hydrostatic test. It refers the reader to the pressure design code for the temperature of the hydrostatic test. API Paragraph 10.3.8 limits supplementary pneumatic test pressure to 170 kPa (15 Psi).
Advance Tank provides our customers with field erected tanks built in strict accordance with the American Petroleum Institute’s (API) standards. As an API member, we are up-to-date on the latest news, policies, and design requirements. Advance Tank provides custom design, fabrication and erection of tanks that meet API standards and customer specific requirements. With in-house engineering, experienced drafters, complete fabrication capabilities and field crews located throughout the country, we will be there when you need us.
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.
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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.
API 12D STANDARD
The API 12D specification is utilized in the fabrication and erection of field welded tanks for storage of production liquids. In general, this standard is commonly used by upstream petrochemical companies. The API 12D standard is to field erected tanks as API 12F is to shop built tanks. API 12D predetermines tank dimensions, design pressure and vacuums, with accessories and testing requirements. This eliminates the need for further engineering, effectively reducing the cost of each tank.
SPECIALIZED SERVICES
- Engineering, Design, Fabrication & Erection
- API Tanks up to 360′ diameter
- Custom Tank Accessories
- Seal Installation
- Hydro Testing
- Hydro Pneumatic Testing
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
TANK MATERIAL TYPES
- Carbon Steel
- Stainless Steel
- Duplex Steel
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Api Std 660
SUBCONTRACTED SERVICES
Api 660 Latest Edition
- Tank Coatings
- Insulation
- Cathodic Protection Systems
- Leak Detection Systems
- Heat Relieving
- Strapping