August 2015

Process Equipment

Protect tanks with pilot-operated vent valves

A number of devices are available for protecting low-pressure American Petroleum Institute (API) tanks against overpressurization. A case study demonstrates the need for the designer to analyze the en..

Labhasetwar, S. G., Engineers Australia

A number of devices are available for protecting low-pressure American Petroleum Institute (API) tanks against overpressurization. A case study demonstrates the need for the designer to analyze the entire system in detail while selecting an appropriate pressure-release device to satisfy design and operating criteria. Based on this case study, the author concludes that, in cases where low-pressure API tanks are required to vent to a closed-header system with fluctuating pressures, pilot-operated pressure and vacuum vent valves (PVVVs) provide the best protection. Low-pressure API tanks These tanks are designed for a maximum pressure of 103.4 kPa (15 psig) and are further divided into two cate

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