True or False: Process control must be in place for all modes of operation, not just the normal operating mode.

The correct answer is true because effective process control is essential across all operational modes, including normal operation, startup, shutdown, and emergency conditions. Maintaining control in all modes not only ensures that the process runs safely and efficiently during regular operations but also provides necessary safeguards during non-standard scenarios like equipment failures or abnormal events.

In emergencies, for instance, having a robust process control system can help mitigate risks, prevent incidents, and allow for the safe management of the situation. Additionally, during startups and shutdowns, where conditions can change rapidly, process controls are critical in preventing hazards by adequately managing transitions and abnormal conditions.

Effective process controls are an integral part of a comprehensive safety strategy, ensuring that processes remain within safe operating limits no matter the mode of operation. This holistic approach to process safety aligns with the principles of inherently safer design, where proactive measures are implemented to minimize risks throughout the entire lifecycle of a process.