Which factor is not typically associated with boiler operation safety?

In the context of boiler operation safety, the factor that is not typically associated with promoting safe operation is excessive pressure buildup. Having excessive pressure in a boiler can lead to dangerous situations like explosions or the release of steam at higher pressures than the system is designed to handle. This scenario signifies a failure in safety protocols and control mechanisms intended to prevent pressure from exceeding safe limits.

On the other hand, maintaining the correct water level is critical as it prevents overheating or damaging the boiler. A proper fuel supply is vital to ensure efficient and safe combustion processes, thus avoiding situations that could lead to unsafe operational conditions. Regular maintenance checks are also essential for identifying and mitigating any issues before they pose safety risks, ensuring that all components function correctly and safely.