The precautions in the design of anchor storage tanks are studied, such as design of tank walls and roofs, determination of anchoring force and calculation of anchor seat etc.

This paper comprehensively recommends some forms of the roof structure which are frequently used in tank enginnering,and briefly describes their structural features, operating ranges and serviceable conditions.

Shenli Oilfield and Henan Sifang Anti-corrosion Company have developed jointly a new reparation technique called compound structure with foam layer placed in between two glass fiber reinforced plastics to repair specific tank area, such as tank roof.

This paper comprehensively recommends some forms of the roof structure which are frequently used in tank enginnering,and briefly describes their structural features, operating ranges and serviceable conditions.

In the light of the top unstability of oil tank,an analysis on the structures of spherical shell and stiff-ener is carried out from the reason influencing the stability of tank top and calculation.