AS 5602:2009 – Refined petroleum products-Vehicle bottom loading and vapour recovery.
This Seclion sets out requirements for %apour recover Connections, including adaptors. couplers, hoses and piping.
The following requirements apply:
(a) Adaptors and couplers shall be—
(i) 101.6 mm (4 inch) cam and grouse quick-coupling type (camlock). conforming to US MIL-C.27487 (NATO tpc);
(ii) self-sealing: and
(iii) opening under an esternal pressure of 4 106 kPa to provide vacuum relief.
(b) Vapour recover)’ adaptors shall be fitted with an interference selectivity ring in order so present wrong connection, as shown in Figure 3.1,
(c) Vapour recovery couplings shall be over-bored to match the adaptor, as shown in Fieurc 3.2.
Sd) Pressure drop across the coupled units shall be less than 4 kPa at 6000 Limin flow of free air.
(e) Couplings shall open automatically when connected, and close when disconnected.
(C) Any new designs shall he compatible with esisting couplers, adaptors and vapour recoserv elbows.
3.3VAPOUR RECOVERY HOSE AND PIPINGThe following requirements shall apply:
(a)The vapour hose shall be at least 3 m long.and preferably 4 m, permanently mounted
to the vehicle vapour collection system within the envelope shown in Figure 2.2(a).(b)The dedicated vapour recovery hose shall fit the tail of the 100 mm coupler.
(c)The dedicated vapour hose shall be 100 mm nominal bore approved vapour recovery
hose.The body colour shall be black,with a 50 mm wide yellow helical band at apitch of approximately 250 mm.
(d)Vehicles without a permanently mounted hose shall carry a hose compatible with the
above items and shall comply with the relevant statutory requirements.
()Vapour recovery piping connected to two or more compartments shall be 100 mm
diameter or of equivalent cross-section,to permit simultaneous filling of twocompartments at 2500 L/min cach.
This Section outlines requirements for the overfill protection system on the road lank
An approved sensor element, compatible with existing equipment, shall be mounted in each vehicle tank compartment. at a level which ssill actuate the shutting down on product supply to the compartment, in order to maintain the minimum allowable ullage. [his element shall be suitable for product temperatures of at least 7°C.
A second element may be provided ftsr product temperatures between 7°C and 120°C.
NOTE: Generally the closure is in two stages. While the signal is instan(aneuus. the time to close the valve can vary. dcpendcnt on the type of als’c used. From data provided by the salve manufacturers, the optimum time for closure is approximately 2.3 seconds for such a valve, This would then allow 105 1. to enter the compartment at full flow before complete closure of the loading system is achieved. This ullage will be greater than bc 3% allowed for compartments of less than 3000 1. capacity.
4.3 CoNECTloN ItETWEIN Hl.t ST ANt) ANt) VI HlCl.I. Thc following requirements apply:
(a) An approved electrical connection plug shall be fitted 10 the cable from the fill stand and provided with ten connector positions. seven of which shall be fitted with connector pins.
(b) An approved stxket shall be fitted to the tank sehicle 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 rosition 9 and 10, both being used for the common earth (see Figure 4.1). Connector pins corresponding to positions I and 2 shall be lefl blank.
(d) A dumm 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 arc each connected to a dumm sensor. pin 9 and 10 is always the common earth.
(e) An new designs shall be compatible with existing equipment.