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Deleted member 26818
Yes I agree, the OP did not mention disconnection, although one of the replies mentioned it.
The OP did however refer to locking off, which to my mind would be akin to disconnection.
With gas, as I understand it, an engineer can condemn an appliance, turn off the supply and whilst not locking off, can affix a lable, which indicates the supply has been turned off for safety and I believe indicates that it is an offence for someone to turn the supply back on without first rectifying the fault.
The OP did however refer to locking off, which to my mind would be akin to disconnection.
With gas, as I understand it, an engineer can condemn an appliance, turn off the supply and whilst not locking off, can affix a lable, which indicates the supply has been turned off for safety and I believe indicates that it is an offence for someone to turn the supply back on without first rectifying the fault.