What consequence arises from a failure in the airflow transmitter in the context of a steam plant?

The correct answer indicates that a failure in the airflow transmitter can lead to decreased fuel oil header pressure. In a steam plant, the airflow transmitter is critical in monitoring and ensuring the proper balance of air and fuel for combustion. When airflow measurement is compromised, it disrupts the overall combustion process.

A decrease in fuel oil header pressure can occur because the system may not receive the appropriate air-to-fuel ratio necessary for efficient combustion. Insufficient airflow can lead to incomplete combustion, causing an imbalance that triggers the fuel oil system to adjust the header pressure. This scenario can prevent the burners from operating optimally, which is essential for maintaining the necessary conditions for steam generation.

Inadequate airflow can negatively impact combustion, which often translates to system inefficiencies, including lower pressures that are vital for proper operation. Therefore, understanding how a malfunctioning airflow transmitter affects fuel oil header pressure is crucial in steam plant operations.