What is the required opening area between the boiler and safety valve?

The required opening area between the boiler and the safety valve must be at least equal to the area of the valve inlet to ensure effective pressure relief. This is a crucial safety measure that allows for the proper discharge of steam or fluids without creating a bottleneck that could lead to increased pressure and potential failure of the boiler or associated systems. By matching the opening area to the valve inlet, the system facilitates efficient flow and operation, reducing the risk of hazardous situations.

In context, other options may suggest varying ratios or comparisons that do not align with safety standards or engineering practices for pressure relief systems. Therefore, specifying the opening area to be at least equal to the area of the valve inlet reflects established safety requirements and ensures the safe and effective operation of the boiler system.