UPWARDS and UNOBSTRUCTED – say it again! UPWARDS and UNOBSTRUCTED. Two simple and very clear terms that so many struggle with when it comes to Relief System Designs. Here is a horizontal discharge of a relief valve on an NH3 vessel. The discharge height is ~20′ but we can see how the gas is dispersing. It is a picture-perfect reason why our HAZMAT codes all say… RV discharge must be UPWARDS and UNOBSTRUCTED…
Photo for non-members; members log in to watch video
