Describe the operational protocols for handling a sudden 'wellhead pressure surge' during a geothermal power plant startup.

A sudden wellhead pressure surge during a geothermal power plant startup requires immediate and carefully coordinated operational protocols to prevent equipment damage and ensure personnel safety. The first step is to immediately assess the situation. This involves verifying the pressure readings from multiple sensors to confirm the surge and evaluating other related parameters such as flow rate and temperature. Next, the wellhead control valves should be adjusted to reduce the pressure surge. This may involve partially closing the production valve to restrict flow from the well. It is crucial to a....