AS 5602:2009 pdf free download – Refined petroleum products-Vehicle bottom loading and vapour recovery

AS 5602:2009 pdf free download – Refined petroleum products-Vehicle bottom loading and vapour recovery.
3.1 SCOPE OF SECTION
This Section sets out requirements for vapour recover connections, including adaptors, couplers, hoses and piping.
3.2 REQUIREMENTS FOR ADAPTORS AND COUPLERS
The following requirements apply:
(a) Adaptors and couplers shall be—
(i) 101.6mm (4 inch) cam and groove quick-coupling type (camlock), conforming to US MIL-C-27487 (NATO type):
(ii) self-sealing: and
(iii) opening under an external pressure of4 to 6 kPa to provide vacuum relief.
(b) Vapour recovery adaptors shall be titled ith an interference selectivity ring in order to prevent wrong connection, as shown in Figure 3.1.
(c) Vapour recovery couplings shall be over-bored to match the adaplor. as shown in Figure 3.2.
(d) Pressure drop across the coupled units shall he less than 4 kPa at 6000 L/min flow of free air.
(e) Couplings shall open automatically when connected, and close when disconnected.
(1) Any new designs shall be compatible with existing couplers, adaptors and vapour recovery elbows
This Section outlines requirements for the overfill protection system on the road tank vehicle.
4.2 TANK COMPARTMENT SENSING ELEMENT
An approved sensor element, compatible with existing equipment, shall he mounted in each vehicle tank coinparinlent. at a level which will actuate the shutting down on product supply to the compartment, in order to maintain the minimum allowable ullage. This element shall be suitable for product temperatures of at least 7°C.
A second element may be provided for product temperatures between 7°C and 120°C.
NOTE: Generally the closure is in two stages. While the signal is instantaneous, the time to close the valve can vary, dependent on the type of valve used. From data provided by the valve manufacturers, the optimum time for closure is approximately 2.5 seconds for such a valve. This would then allow 105 L to enter the compartment at full flow before complete closure of the loading system is achieved. This ullage will be greater than the 3% allowed for compartments of less than 3000 L capacity.
4.3 CONNECTION BETWEEN FILL STANI) ANI) VEHICLE
The following requirements apply:
(a) An approved electrical connection plug shall be fitted to the cable from the fill stand and provided with ten connector positions. seven of which shall be fitted with connector pins.
(b) An approved socket shall be fitted to the tank vehicle at the location shown in Figure 2.2(a) and labelled ELECTRICAL CONNECTION SOCKET’.
(c) Connector pins corresponding to positions 3 to 8 shall be used, with Position 9 and 10. both being used for the common earth (see Figure 4.1). Connector pins corresponding to positions I and 2 shall be left blank.
(d) A dummy sensor shall be connected to unused pins if there are fewer than six compartments. For example, in a three-compartment truck Pin 3 connects to the sensor in Compartment I. Pin 4 to Compartment 2. Pin 5 to Compartment 3 and Pins 6 and 7 are each connected to a dummy sensor. Pin 9 and 10 is always the common earth.
(e) Any new designs shall be conipatible s ith existing equipment.