Membrane installation in storage tanks for seismic loads impact protection

Abstract

There are about 1 million earthquakes of varying intensity every year in the world. The research of seismic loads on the important technogenic objects remains the urgent issue both globally and regionally. The paper aim is to prevent emergencies and negative impact on the environment in case of damage, destruction and leakage of storage tanks for toxic and flammable liquids due to seismic loads of different strength. The liquid vibrations in rigid and elastic reservoirs have been considered. It has been established that level changing via time for reservoirs without covering membrane can be very large and lead to the appearance of excess pressure on the tank wall. The installation of the floating membrane leads to decreasing both the free surface level and the pressure on the tank walls. The results of the research will allow to reduce sloshing effects and pressure on the reservoir walls, and so to extend the service life, minimize the ecologically hazardous impact on the environment, and prevent emergencies.

Keywords

• storage tanks
• environmental safety
• earthquakes
• seismic loads
• free and forced vibrations
• membrane cover