This standard specifies the minimum performance requirements for various types of overfill prevention devices which are limited to static tanks of shop fabricated manufacture both metallic and non metallic. It covers devices for underground tanks and also above ground tanks with a maximum height of 5 m. To cover the different types of overfill prevention devices, two types have been developed: - Type A: An overfill prevention device whose operation does not depend on the delivery vehicle or supply system; - Type B: An overfill prevention device whose operation depends on the delivery vehicle or the supply systme.#,,#