In the ESS decommissioning process, which activity follows system shutdown?

• A. Removal of hazardous materials
• B. Disconnection
• C. Site restoration
• D. Site assessment

Answer: (B)

Isolating the system from its services is the next safety step after shutdown. Once the ESS is shut down, disconnecting it from power and from its service lines ensures it cannot be energized or started again and prevents any accidental refrigerant release during decommissioning. This disconnection creates a safe boundary so technicians can remove hazardous materials and perform further assessments and restoration without the risk of re-energizing or re-connecting live systems. After disconnection, the workflow typically proceeds to removal of hazardous materials, then site assessment, and finally site restoration, with each step safeguarding workers and the environment as decommissioning progresses.