Low Pressure Flare Transducer Location Having an on/off or control valve at the inlet of a control device is important for efficient combustion. However, the way in which that valve is controlled is critical. In this example, the pressure transducer that controls that valve at times sees stagnation pressure (when the valve is closed), but at other times is reading static pressure (when the valve is open). This can lead to valve confusion. Use of a pitot tubes can be useful, but the best solution is to place the transducer on the equipment that you are trying to control (in this case, tanks).
Material Selection in Hydrogen Service Material selection in hydrogen gas service is of utmost importance. In this example, an inline check valve was found to be split down the middle. The valve was later found to be 303 SST, which is prone to stress corrosion cracking in hydrogen systems. When it comes to hydrogen system builds, plan for some extra time by your procurement team to ensure materials are correct and each component has the associated pedigree.
Nuisance Leaks: Tank HH Level Checker Having a way to check your tank level floats and ESD is a great idea. However, be careful of level checkers that utilize a pull cable and a grease plug. Grease plugs can only hold “leak tight” for a while before they wear away, and now you are violating the closed cover rule on your tanks. Let us help you with a better alternative.
Balance of Compliance and Safety Sizing a closed vent system for your storage tanks can be tricky. Over the past 8 years, the thought has been to be overly conservative especially to avoid enforcement action. However, oversizing closed vent systems and flares can lead to turndown issues and can be potentially catastrophic if the flame front velocity is not maintained. Let Valor help you walk that fine line between safety and compliance.
