This standard provides the rules that must be followed to construct, test and install horizontally executed spherical and cylindrical fiberglass reinforced plastic tanks intended for storing petroleum products at atmospheric pressure. These deposits must be buried. Petroleum products are understood to be fuels and liquid fuels in general (including oxygenated products), classes B, C and D1). The tanks are considered to be completely assembled and finished, having satisfactorily passed the tightness test before shipment.