Non-routine operation heightens the opportunity for operating mistakes to be made. Operating personnel should be diligent during these times to minimize the risk of an incident. Depending on how often a system or process is run, start-up may be a non-routine operation that is not familiar to personnel.
Prior to the start-up of a system, workers should:
- Verify system configuration and integrity of hardware paying special attention to equipment that has been subjected to maintenance.
- inspect all fittings and connections for tightness
- ensure all safety and ventilation systems are operating properly
- verify proper isolation of the system
- Purge air out of the system. See Purging
- Verify pressure containment, which is often accomplished by pressurizing the system to a modest pressure, closing the pressure source, and making sure the pressure is retained for a period of time
During start-up, closely follow the start-up operating procedures:
- Pressurize the system with hydrogen in steps, periodically checking for leaks
- Hold the system at full pressure for a duration and check for leaks
- If necessary, test the system for impurities
- Confirm system is operating properly
See Operating Procedures for more specific information on items which should be checked and confirmed at start-up.