Which of the following is NOT a step in the emergency response procedures for an ESS?

• A. Executing the response plan
• B. Alerting responders
• C. Ensuring safety
• D. Calibrating instruments after the event

Answer: (D)

The key idea is understanding what actions are needed right away to control an emergency and protect people. In an emergency safety system scenario, the focus is on immediate steps that put the situation under control: carrying out the planned response actions so everyone knows what to do, alerting responders so help arrives fast, and ensuring safety by preventing further harm—such as isolating the area, stopping dangerous operations if it can be done safely, and making sure personnel are accounted for and away from danger. Calibrating instruments after the event isn’t part of these urgent actions. Calibration is a maintenance or verification task that happens once the hazard is under control, to verify instrument readings for future reliability. It doesn’t directly reduce risk or address the immediate emergency, so it isn’t included in the emergency response steps. After the incident, instrumentation can be checked and calibrated as part of the post-incident review, but that belongs to follow-up activities rather than the initial response.