The loads on the structure are classified as: primary load, secondary load and occasional Load. The primary loads are: self weight, equipment loads, weight of contents, weight of Insulation, weight of refractory and imposed loads (live loads).

    Thermal loads, loads due to relative settlement of columns and equipment thermal movement Loads. The occasional loads are: Wind load, seismic load (earth-quake load), fire load, flood Load, tsunami load, snow load and ice load.