Oil Storage Tank Floating Roof External Coating

This onsite 202’ Dia Oil Storage Tank required the topside of Floating Roof & Pontoons abrasive blasted & coated for a submerged service environment per client specifications. To do so, we implemented a custom project approach.

• Performed pre-blast inspection and found the substrate was SSPC-ViS-1 CONDITION G1 with extensive pin point rusting visible.
• All sharp edges required chamfer with grinding disk to meet NACE SPO-178
• Some weld repairs were required to be completed by Client
• Complete SCAT testing was completed for contamination to ensure acceptable levels
• Heat was Induced in tank void under EFR to maintain Substrate conditions.
• Surfaces were abrasive blasted to a SSPC-SP10/NACE 2 Near White Blast & Spent abrasive removed via Industrial VEC Loader Vacuum
• Prime coat of Devoe Bar-Rust 235 applied after final blast inspection on a daily basis until the entire surface of tank was completely abrasive blasted & primed in.
• Total DFT Applied was 12 to 16 Mils DFT in multiple roller coats per Client Specification.
• Between Roller Application Coats, to attain specified DFT, the Surface was cleaned of all debris and Protrusions
• All low areas Identified and recoated to specification