I assume we have door that you want to be locked and is unlocked by using a welding torch.

Ok On your door properties give it a name then set the
Locked TRUE

Now add a TorchableLock Object and place where you want it

Set
StartAsBolt True
CutTime How long you want it to take until the lock is destroyed
OnCutCommand msg DoorNameHear unlock Tell Door to become unlcocked
FileName models\props\lock.abc or models\props\weld.abc
SkinName skins\props\lock.dtx orskins\props\weld.dtx

or

FileName models\props\lock.abc or models\props\lock.abc
SkinName skins\props\lock.dtx orskins\props\lock.dtx

Now you have door locked by single weld point or door lock

If you want more than one Torchable lock on a door do the same above apart from

OnCutCommand msg TriggerName Trigger

Then in the trigger set in its properties

ActivationCount to the number of locks you have

Then is Targets Set

TargetName1 YOURDOORNAME
MessageName1 unlock

Download this tutorial

Barkey V1.0