Yes, see clause 18.1 of NEC3 or 17.2 of NEC4.
In brief, the Contractor notifies the PM that the WI/Scope requires him/it to do something which is illegal or impossible and, if the PM agrees, the PM then instructs a change to the WI/Scope which is a compensation event.
In brief, the Contractor notifies the PM that the WI/Scope requires him/it to do something which is illegal or impossible and, if the PM agrees, the PM then instructs a change to the WI/Scope which is a compensation event.