To prevent the generation of steam greater than the maximum working pressure in a steam boiler, which device must be activated?

The high steam pressure limit control is designed specifically to monitor the steam pressure within the boiler and activate when that pressure approaches the maximum allowable limit. Its primary function is to provide a safety mechanism that prevents excessive pressure buildup, which can lead to dangerous conditions or even catastrophic failure of the boiler. If the steam pressure exceeds the preset limit, this device will trigger actions such as shutting off the fuel supply or activating safety valves to release steam, effectively maintaining the pressure within safe operational parameters.

This device is critical for regulatory compliance and operational safety in any steam boiler system, ensuring that the pressure does not exceed what is regarded as safe for both equipment and personnel. It plays a vital role in protecting the integrity of the boiler and the safety of the entire system.