Final answer:
The ABSA must accept any repair or alteration procedure on pressure equipment in Alberta, Canada, before work begins to ensure compliance with safety standards.
Step-by-step explanation:
The repair or alteration procedure must be accepted by the ABSA (Alberta Boilers Safety Association) prior to the start of work. The ABSA is the regulatory authority that ensures the compliance with codes and safety standards for pressure equipment in Alberta, Canada. This means that any significant repair or alteration to boilers, pressure vessels, and pressure piping systems has to be reviewed and approved by the ABSA before any work can begin to ensure all safety and regulatory requirements are met.