PART IX DE-ENERGIZATION AND LOCKOUT — Where locks not required
136
The application of a lock is not required under section 129 or 135 where
136(a)
the energy isolating device is under the exclusive and immediate control of the worker at all times while working on the machinery or equipment; or
136(b)
a tool, machine or piece of equipment that receives power through a readily disconnected supply, including an electrical cord or quick release air or hydraulic line, is disconnected from its power supply and its connection point is kept under the immediate control of the worker at all times while the work is being done.
Not legal advice. Verify the cited article against the signed agreement.