ASTM A283 plates API Std 650 closed top welded storage tanks

Our company will set up a full-time service engineer for the project, who is responsible for the interface and coordination of technical support and after-sales service of the API Std 650 closed top welded storage tanks project. In response process of customer service center, in case of technical support and after-sales service demand, the user shall contact the full-time engineer of API Std 650 closed top welded storage tanks customer service center, and the technical personnel will give corresponding answers and on-site treatment according to the needs of users.Design of Reinforcement for Single Openings in Tank Walls
The 20 in. x 29 in. obround manhole shown in Figure F-5 is located in solid plate in the sidewall of a cylindrical storage tank 45 ft in diameter in an area where the thickness of the wall plate, tw, is 1/2 in. No corrosion allowance is required. The total internal pressure, Pl + Pg, at the horizontal centerline of the opening is 27.5 lbf/in.2 gauge. The thickness of the wall plate, t, required by 5.10.3 for the latitudinal unit forces, T2, acting at this level is 0.485 in. The manhole neck is fabricated by welding from 3/8 in. plate. The materials in the API 620 tank wall, the manhole neck, and the reinforcing pad conform to ASTM A516 Grade 60. The joints in the welded steel storage oil tank wall and the longitudinal joint or joints in the manhole neck are double-welded butt joints, spot radiographed in accordance with 7.16 and 7.17.Lateral braces between outer bay rafters must be provided if asymmetrical structural shapes are used for rafters and if the API Std 650 closed top welded storage tanks API 650 tanks are located in areas subject to earthquakes. The bracing must be adequately sized for the seismic zone specified.Team concept: respect, communication, coordination and symbiosisBusiness philosophy: leading by strategy, driving by innovation, creating valueManagement concept: goal oriented, efficient operation, stimulation of vitality and continuous improvementQuality concept: standard guidance, control process, craftsman spirit, leading serviceTalent concept: lifelong learning, give full scope to the talents, the sea refuses no riverInnovation concept: innovation is the first driving force for the company's high-quality developmentCustomer concept: taking customers as the center is the foundation of the company's survival and developmentUnqualified welding quality of API Std 650 closed top welded storage tanks is prone to hidden dangers such as oil tank steel plate cracks and leakage. To avoid this situation as much as possible, it needs to be avoided when the oil storage tank is manufactured. Scientific and reasonable measures are adopted to control the welding quality when welding the API Std 650 closed top welded storage tanks. How to reasonably control the welding process quality of oil storage tanks?