Aboveground steel tanks are manufactured to handle liquid storages ranging from water to other hazardous fluids like petroleum. The density of the liquids stored in the tank plays an important role in the design because larger densities require thicker shells.
InTouch is the leading aboveground steel tank inspection and quality control services provider in China. Some of the well-known quality control inspection techniques which we use to develop our protocols include:
API 620
The API 620 is intended to cover the design and construction of large, welded, low-pressure storage tanks which contain petroleum intermediates, and other liquid products. However, this particular standard does not cover the design procedures for tanks which feature walls shaped in such a manner that the walls cannot be fully generated by the rotation of a suitable contour within a single vertical axis of revolution.
API 650
The API 650 is intended to cover material, design, fabrication, erection, and testing requirements for vertical, cylindrical, aboveground, closed and open-top, welded steel storage tanks for oil storage. It applies only to tanks which have a uniformly supported base and those found in non-refrigerated service with a maximum temperature design of 93°C (200°F) or less.
API 653
The API 653 is intended to cover tank inspection, repair, alteration and reconstruction using a performance-based inspection interval which deals with more than just inspection as it also considers potential design issues for which basic design review levels of assessment are provided in order to address such issues.
AWWA D100
The AWWA D100 is intended for welded carbon steel tanks for water storage. The standard has been developed in order to provide the minimum requirements needed for design, construction, inspection, as well as the testing of newly welded carbon steel tanks produced for the storage of water under atmospheric pressure conditions.
AWWA D102
The AWWA D102 is a recommended practice for coating purposes both inside and outside a steel tank’s surfaces intended for potable water storage.
AWWA D103
The AWWA D103 is a recommended practice intended to meet the minimum requirements in terms of the design, construction, and inspection and testing of new bolted carbon-steel tanks for water storage purposes.
STI SP001
The STI SP001 is intended for the purpose of inspection with regards to aboveground storage tanks. It addresses double wall tanks and those with integral secondary containment pans as well as horizontal tanks. It contains evaluation criteria which is used to determine whether the service of aboveground storage tanks are to be continued based on inspections focused on the overall condition of existing tanks and any changes which might be noted within the tank system.
UL 80
The standard provides coverage on steel primary, steel secondary, and steel diked type atmospheric storage tanks from 60 to 660 gallons (227 to 2500 L) which are primarily intended for the storage and supply of heating fuels for oil burning equipment, or for the storage of diesel fuels for compression ignition engines and motor oils for automotive service stations. It is also specified in this standard that each tank shall be permitted to be fabricated as a double-bottom tank.
UL 142
The standard provides coverage on steel primary, secondary and diked type atmospheric storage tanks which are intended for non-corrosive, stable flammable as well as combustible liquids which have a specific gravity of no more than 1.0 in aboveground applications. It covers tanks which have been fabricated in a variety of shapes which include cylindrical and rectangular aboveground tanks.
UL 2080
The standard provides coverage on shop-fabricated aboveground atmospheric fire-resistant tanks which are intended for the storage of stable flammable or combustible liquids that have a specific gravity of no more than 1.0 and that are compatible with the material and construction of the indicated tank.
UL 2085
The standard provides coverage on shop-fabricated aboveground atmospheric protected tanks which are intended for the storage of stable flammable or combustible liquids which have a specific gravity of not more than 1.0 and that are compatible with the material and construction of the intended tank.
SWRI 93-01
The standard implements the exposure of tanks to high-intensity fires, hose stream tests, and ballistic and simulated vehicle impacts in order to determine whether aboveground fuel storage tanks meet the requirements of the Uniform Fire Code Appendix Standards, UL 2085, NFPA 30A, or ULC/ORD-C142.
