API 653 Tank Repair Engineering & Documentation
Engineering assessment, repair drawings, method statements and as-built documentation for API 653 storage tank repair and alteration in Saudi Arabia.
SLETEC Engineering provides API 653 tank repair engineering services for above-ground welded storage tanks in Saudi Arabia's oil & gas and petrochemical sector. Our tank repair scope covers engineering assessment and repair drawing preparation for tank bottom plate repair, annular plate repair, shell plate repair and weld repair, tank nozzle modification and reinforcement engineering, and roof repair drawing preparation for cone roof, dome roof and floating roof tanks. All repair engineering is conducted in accordance with API 653 (Tank Inspection, Repair, Alteration and Reconstruction) and API 650 (Welded Tanks for Oil Storage).
Technical coverage includes tank settlement analysis and differential settlement assessment per API 653 acceptance criteria, nozzle load evaluation and local stress analysis at repaired nozzle connections, tank venting calculation and emergency vent sizing per API 2000, and fitness-for-service assessment per API 579 where required. SLETEC's tank repair engineers coordinate with inspection contractors to ensure repair scope is fully defined and that weld procedure qualifications and NDE requirements are included in the repair documentation package.
SLETEC prepares complete tank repair document packages for Saudi Aramco and client approval, including repair drawings at IFC standard, repair method statement for contractor execution, calculation reports, MDR compilation and as-built drawing update. We have brownfield tank repair experience on above-ground storage tanks at Ras Tanura, Jubail Industrial City, Dammam and Yanbu refinery and terminal facilities.
Engineering documentation prepared with reference to API, ASME, AISC, AWS, ISO, Saudi Aramco, SABIC and client project specifications where applicable.
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Why Choose SLETEC
Dedicated API 653 knowledge covering repair assessment, repair calculation, drawing and method statement in a single package
Tank engineering experience on above-ground welded storage tanks for oil, fuel, water, chemical and process fluids
Repair drawings issued at IFC standard with full revision control for Saudi Aramco and client approval
Tank venting and settlement checks completed as part of repair engineering scope
Brownfield tank repair experience in Jubail Industrial City, Ras Tanura, Yanbu and Dammam regions
Frequently Asked Questions
What does SLETEC's API 653 tank repair engineering service include?
SLETEC's API 653 tank repair engineering service covers the full scope from initial repair assessment through repair drawing preparation, method statement (MOS) for contractor execution, and as-built drawing update at completion. This includes tank bottom plate repair, annular plate repair, shell plate repair, nozzle modification engineering, roof repair drawing, tank venting calculation per API 2000 and MDR compilation for handover.
Can SLETEC engineer repairs to tank bottom plates and annular plates?
Yes. SLETEC provides engineering for tank bottom plate and annular plate repairs in accordance with API 653. This includes plate replacement layout drawing, weld detail drawing, weld procedure reference, annular plate to shell joint repair detail and inspection hold point requirements. Repair drawings are issued at IFC standard for contractor execution.
Does SLETEC provide tank repair method statements (MOS)?
Yes. SLETEC prepares tank repair method statements (MOS) covering the complete repair sequence including safety isolation, tank entry procedures, welding sequence, inspection hold points, non-destructive examination requirements and completion records. Method statements are formatted to client and Saudi Aramco or SABIC document approval requirements.
Can SLETEC perform tank venting calculations per API 2000?
Yes. SLETEC performs tank venting calculations per API 2000 covering normal venting and emergency venting requirements. This includes vent sizing calculations, selection of appropriate vent device type and documentation of venting calculation results for client and regulatory approval.
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