1.1 General
This specifcation covers material, design, fabrication, and testing requirements for fberglass-reinforced plastic (FRP) tanks. Only shop-fabricated, vertical, cylindrical tanks are covered. Tanks covered by this specifcation are intended for aboveground and atmospheric pressure service. Unsupported cone bottom tanks are outside the scope of this specifcation.
This specifcation is designed to provide the petroleum industry with various standard sizes of FRP tanks.
Because of the versatility of FRP tanks, the user shall be responsible for determining the suitability of FRP tanks for the intended service.
NOTE The consequences of exposing FRP tanks to high temperatures created by exposure fres should be considered.
This material loses strength as the temperature increases. FRP tanks should be suitably protected against fre exposure or so located that any spills resulting from the failure of these materials could not unduly expose persons, buildings, structures, or other equipment to the possible fre incident.
1.2 Compliance
1.2.1 The manufacturer is responsible for complying with all of the provisions of this specifcation. The purchaser is responsible defning their specifc requirements in the data sheet (see Figure D.1; hereafter referred to as “the data sheet”). The purchaser may make any investigation necessary to be satisfed with compliance by the manufacturer and may reject any material that does not comply with this specifcation.
NOTE The purchaser is encouraged to arrange for inspection independent of the inspection furnished by the manufacturer, and the purchaser’s inspector should follow closely all the details of shop fabrication and testing herein specifed that afect the integrity and safety of the completed structure.
1.2.2 If specifed by the purchaser on the data sheet, the tank shall be constructed in accordance with API Q1 and the API Monogram Program (see Annex A).
1.2.3 This specifcation applies to new tanks. The requirements may be applied to existing tanks at the discretion of the owner/operator.
1.2.4 This specifcation has requirements given in two alternate systems of units. The manufacturer shall comply with the U.S. customary (USC) units. The SI unit equivalent is provided for convenience.
NOTE Per API document style, SI unit values appear frst, followed by their USC equivalents in parentheses
