BOS 758:2018

Description

1.1 This Standard applies to the inspection of aboveground storage tanks (ASTs). These storage tanks include shop-fabricated tanks, field-erected tanks and portable containers as defined in this Standard, as well as their containment systems. The requirements for field-erected tanks are covered separately in Annex B.
1.2 This Standard applies to ASTs storing stable, flammable and combustible liquids at atmospheric pressure with a specific gravity less than approximately 1.0.
1.3 This Standard applies to ASTs storing liquids with operating temperatures between ambient temperature and 93.3 °C.
1.4 At a minimum, the following tank components shall be inspected (as applicable):
a) Primary tank; .
b) Secondary tank;
c) Tank supports;
d) Tank anchors;e) Tank foundation and external supports;
e) Tank foundation and external supports;
f) Tank gauges and alarms;
g) Overfill valves and alarms;
h) Insulation covering;
i) Tank appurtenances;
j) Normal vents;
k) Emergency vents;
l) Release prevention barriers; and
m) Spill control systems.
NOTE 1 Only aboveground tanks included in the scope of this Standard are applicable for inspection per this Standard. NOTE 2 Other standards, recommended practices and other equivalent engineering and best practices exist that provide alternative inspection requirements for tanks defined within the scope of this Standard and for tanks outside the scope of this Standard. For example, see API Standard 653,
NOTE 3 Tank Inspection, Repair, Alteration, and Reconstruction, for additional information pertaining to tanks built to API Standard 650 and API Specification 12C tanks; and API 12R1, Recommended Practice for Setting, Maintenance, Inspection, Operation, and Repair of Tanks in Production Service, for tanks employed in production service or other similar service.