Oil Storage Tank

Oil Storage Tank construction according to API 650 standard, performed in accordance with detailed metal framework’s design planand Work Execution Plan. Work Execution Plan is the basic technological document in the course of oil storage tank installation.Prior toconstruction of a storage tankall works connected with basement and foundation arrangementshould be completed. Acceptance of basement and foundation is done by the ordering customer with therepresentatives of construction company and installer, participating as well. Acceptance of the finishedbasement and foundation is fixed in the corresponding document (acceptance certificate/act).

Work Execution Plan should include and provide:

• Master plan of the construction site stipulating the materials-handling equipment and its positioning;
• Description of procedures, aimed at providing the necessary assembling accuracy and the tank elements’space stability in the course of top assembly and installing to the project position;
• Measures, providing the load-bearing capacity of the construction elements in the course ofstorage tankerection;
• Requirements for the quality of welding and assembly works for each procedure of oil storage tankconstruction;
• Types and the scope of control measures for the storage tank erection;
• The order of tank testing procedures;
• Safety regulations and labor protection norms;
• Environmental protection requirements.

• Requirements for preparation of edges for welding;
• Requirements for joints’ assembly for welding;
• Welding methods and regimes;
• Welding materials;
• The order of procedures;
• The order of welding passes and welding of joints;
• Requirements for heating the junctions depending on the air temperature and the tempo of their cooling;
• The need for protection cover in the welding zone;
• The necessity of after-welding heat treatment of the junction;
• Necessary equipment and technological facilities for the oil storage tank construction;
• Methods and the scope of control of the welding seams.
The Register of operational control is to be seen as the essential part of Work Execution Plan, as it sets therequirements for quality control of the welding and assembly procedures.