Which method should be used to measure the distance for pressures of ASME containers?

The correct method for measuring the distance for pressures of ASME containers is to measure across the container surface. This technique ensures an accurate measurement of the relevant diameter or width, which is important for determining the correct pressure ratings and handling the ASME container safely. Measuring across the surface provides a consistent reference line that is essential in engineering practices, particularly in calculations involving the structural integrity and safety of the container under pressure.

Using laser technology, while advanced, could introduce variables that may complicate measurement accuracy if not properly calibrated for specific container shapes. Measurements taken from the top or from ground level may not account for the actual surface being used in pressure calculations, which could lead to inaccuracies. Therefore, measuring directly across the surface is the most reliable method for ensuring the safety and efficiency of operations concerning ASME containers.