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API St 1631-2001 pdf free download

API St 1631-2001 pdf free download.Interior Lining and Periodic Inspection of Underground Storage Tanks.
1 General 1.1 SCOPE This standard provides minimum recommendations for the interior lining of existing steel and Þberglass reinforced plas- tic underground tanks and periodic inspection of steel under- ground tanks used for the storage of petroleum-based motor fuels and middle distillates. These recommendations include procedures to be followed and operating conditions to be maintained by contractors, workers and engineers preparing, inspecting, testing and lining the interiors of existing under- ground storage tanks. Requirements for vapor-freeing tanks, removing sediment and cleaning interior surfaces of steel and Þberglass tanks as well as guidelines to identify tanks that are suitable for lining, are also included. All work associated with the interior lining and periodic inspection of underground storage tanks shall be accomplished in accordance with appli- cable federal, state, and local regulations, including applica- ble environmental and safety requirements. 1.2 APPLICABILITY The methods described in this standard are applicable to steel and Þberglass-reinforced plastic tanks used for the stor- age of petroleum-based motor fuels and middle distillates. The procedures are applicable to tanks installed in typical retail service station outlets but may also be used for tanks installed at other types of facilities. 1.3 EPA TECHNICAL STANDARDS The U.S. Environmental Protection Agency (EPA) issued its Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks (UST) (herein referred to as ÒTechnical StandardsÓ) in 1988. These regulations can be found in the Code of Federal Regu- lations at 40 CFR Part 280. In addition, legislation and regu- lations on all aspects of underground storage tank management have been developed by state and local jurisdic- tions that may have requirements other than those speciÞed in the EPA Technical Standards.
3.2.12.3 sub-contractor: A company or person selected and hired by a contractor to conduct speciÞc tank lining related operations and activities in accordance with sub-con- tract agreements. There may be more than one sub-contractor on a job at the same time. 3.2.13 empty: A tank that has no (standing) product remaining in the tank and is ready for vapor freeing and cleaning. 3.2.14 entrant: A qualiÞed person who is authorized by the entry supervisor to enter a conÞned space. 3.2.15 entry: The action by which an entrant passes through an opening into a conÞned space. Entry includes ensuing work activities in both permit required conÞned spaces and non-permit conÞned spaces, and is considered to have occurred as soon as a part of the entrantÕs body breaks the plane of an opening into the conÞned space. 3.2.16 entry permit (confined space): The written or printed document provided by the employer (owner/operator or contractor) and issued by an entry supervisor that provides the site, potential hazard and work speciÞc information nec- essary to control and authorize entry into a permit-required conÞned space including conditions canceling the permit and requirements for safeguarding or returning the space to ser- vice following termination of entry.
3.2.17 entry supervisor: The qualiÞed person (employee, foreman, supervisor, crew chief, etc.) designated by the employer (owner/operator and contractor) to be responsible for determining the requirements and whether or not acceptable entry conditions exist at permit required con- Þned spaces and non-permit required conÞned spaces, where entry is contemplated. Entry supervisors shall authorize entry, oversee entry operations and terminate entry as required by the permit or conditions. An entry supervisor, who is properly qualiÞed, trained and equipped, may serve as an attendant or as an entrant. The duties of entry supervisor may be passed from one entry supervisor to another entry supervisor, during the course of an entry operation. 3.2.18 explosive (flammable) range: The range of concentrations of ßammable vapor-in-air, between the lower explosive (ßammable) limit (LEL) and the upper explosive (ßammable) limit (UEL) that will propagate ßame if ignited.

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