Rank: New forum user 
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Just looking to find out how people manage this hazard?
Breakaway couplings are not an option as the pipework has to be plastic and it would break before the couplings parted I have been thinking about a fixed barrier system that could be in place during the bunkering but am looking for any real life examples of how this is managed elsewhere. Some industry standards if you like?
Thanks
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Rank: Super forum user
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* Fixed barrier - can be interlocked with delivery point so barrier cannot be opened until the delivery valve is closed
* Take keys from driver and put in locked box - could also be interlocked as above
* Wheel chocks - pretty standard to do this even with other controls.
* Some tankers have interlocks that apply the brakes when a connection is made - standard for some products (e.g. LPG)
* In shipping some product transfers have Powered Emergency Release Couplings (PERC) - on detection of movement the coupling forced apart by a spring. Not sure these are used on road, but if you felt it necesary I am sure something could be developed.
I think certain industries have standards, but not sure there is anything that would cover basic chemicals.
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Rank: Forum user
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We regularly receive tanker deliveries, we have the yard gates closed, the driver must be at the rear of the tanker to operate the on-board pump to offload, marshalls reverse the tanker on/off site. We also have the tanker responsible for all connections (pipe and earthing) to our manifold, although this is overseen by our staff. So we have put in place some safeguards to ensure this cannot happen.
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Rank: Super forum user 
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Depending on the type of vehicle you may not be able to remove the keys as these may be needed to operate the offload pumps. We used wheel chocks and two man control like a railway tally system with a HUGE tag we attached to the keys (remember you can't always take them away!!). One of your employees stuck with the driver during the offload and the driver wasn't allowed back into the cab until our storeman and his mate were satisfied that the delivery had been completed and all hoses etc stowed safely. Everybody develops their own system to suit their own circumstances and facilities.
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Rank: New forum user
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Thanks guys, helped a lot and actualy the tankers we bring onsite already have some trailer brake mechanism that would prevent them moving off. A little research saved the company a lot of money. Thanks
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Rank: Forum user
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crook lock type of steering wheel prevention/reminder key with supervisor
or could put a lock over the trailer couplings /kingpin to prevent attachment. lockout box similar to for electric cut outs
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