LT Judd
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- What is the US system for classifying pressure vessels to determine hazard levels and required level of design and inspection oversight.
Hi , I am based in Australia and my question originates from some grey areas in the Australian system of classifying pressure vessels. I am guessing most users on this forum are US based . Does the US have a system for classifying pressure vessels such as air receivers , boilers, autoclaves, heat exchangers etc. to determine what level of inspection and design review is required?. If so could some one briefly describe it. From what I have seen on the web it looks like you don't have a general standard , but different standards depending on the industry and application. I am interested particularly in the case of water buffer tanks and accumulators that have a bladder inside them filled with nitrogen and how they are considered in terms of risk and hazard.
The Australian system is, I think, based on a German one in which you start with a pressure X volume figure ( MpA x Litres) and then mutiple by 3 different service factors to get a hazard number. The hazard numbers are then divided into five different bands (Logarithmically) which call out different requirements involving design, verification inspection and operation.
The Australian system is, I think, based on a German one in which you start with a pressure X volume figure ( MpA x Litres) and then mutiple by 3 different service factors to get a hazard number. The hazard numbers are then divided into five different bands (Logarithmically) which call out different requirements involving design, verification inspection and operation.