Sec. 598.4. Hazardous substance transfers

(a) Responsibility for transfers.

The operator, when on the premises or when in control of a hazardous substance transfer, is responsible for transfer activities. If the operator is not on the premises and is not in control of a hazardous substance transfer, the carrier is responsible for transfer activities. The operator or carrier must employ practices for preventing transfer spills, overfills and releases.

(b) Operating requirements.

(1) Prior to the transfer and during the delivery, the operator or carrier must determine that the hazardous substance will be transferred to the proper tank, that the receiving tank has available capacity to receive the amount to be transferred and that all tank valving and flow control devices are in the appropriate position to accept delivery. Throughout the entire period of transfer and while the tank system is connected to the loading or unloading device, the operator or carrier must at all times supervise, monitor and control the transfer to prevent overfilling and spilling. The operator or carrier must be trained in the proper transfer procedures, must monitor and control the delivery and must take immediate action to stop the flow when the working capacity of the tank has been reached or should an equipment failure or emergency occur. If a leak is discovered during the transfer, measures must be taken immediately to stop the leak and clean up the material which has been leaked.

(2) All couplings and other connections must be leak free, undamaged and fully functional prior to the transfer and must be checked for leakage after the transfer has been initiated.

(3) Brakes must be set and wheels chocked on all tank cars being loaded or unloaded.

(4) When a truck, rail car, or container is connected to a transfer line, caution signs must be in place to give warning to persons approaching from any anticipated direction. Signs must remain in place until operations are completed, all connections are removed, and outlets properly closed.

(5) During the transfer of a hazardous substance with a flash point below 100 degrees Fahrenheit (37.8 degrees Centigrade) or wherever flammable vapors may be present, all potential ignition sources must be controlled. Sources of ignition include, but are not limited to, open flames, lightning, smoking, cutting and welding, hot surfaces, friction, heat, sparks from static, electrical or mechanical sources, spontaneous ignition, chemical and physical-chemical reactions and radiant heat.

(6) Connections to a container at a transfer station must be sufficiently flexible so that any movement will not damage the connection or cause a leak. Examples of flexible connections include hoses and swing arms.

(7) By August 11, 1996, equipment or practices must be in- place which prevent the mixing of incompatible substances. This must include either mating of couplings to prevent mixing, written site procedures which prevent delivery of a substance to the wrong tank and which prohibit transfer of incompatible substances at the same time within the same transfer station, or equivalent practices. Any written procedures developed, pursuant to this subdivision must be specified in the spill prevention report required by section 598.1(k) of this Part.

(8) By August 11, 1996, all fill and dispensing ports for aboveground tanks which are remote from the tank must be labeled with the chemical name or common name or category of substance and must display legible and clearly visible hazard warnings. In addition, fill ports must contain information on the point of delivery. For a registered tank system, this would be the tank identification number. Valves and controllers which govern the filling and emptying of a tank system must contain information on closed and open positions.