Our Scope of Work
Decundi Inspection Services provides inspection service to operating facilities (refineries, petrochemical plants, and privately held operating facilities) to carry out inspections during decommission and demolition, plus installation of new pressure vessels, piping, flanges, elbows, weldolets, couplings, valves, and pressure safety valves (PSV's). Activities associated with the above-referenced tasks of decommissioning through the installation of PSVs include the removal of the old pressure vessels, piping, and associated components, plus the removal of various nozzles and or manways on the old pressure vessels rendering them unable for further use.
Following the removal of the old pressure vessels and piping, Decundi inspection personnel who are fully versed in these activities carry out inspections during the installation of new pressure vessels, piping, flanges, elbows, weldolets, couplings, valves, and pressure safety valves (PSV's) plus the welding operations and in this regard the assigned Decundi inspector to carry out inspections of the welding consumables used for welding of the above-referenced components (except for the pressure vessels, valves and PSV's) for assurance that the welding consumables are the required type stated on the welding procedure specification (WPS). Inspections are also carried out for assurance the low hydrogen welding electrodes are stored in accordance with the requirements of AWS D1.1.
Decundi inspection personnel carry out inspections during the fit-up and welding of piping, flanges, elbows, weldolets, and couplings, and assurance is made that, as applicable, the weld preparation for these components have the required 60° included angle, 1/8" root opening and 1/16" landing for butt-welded joints and for compliance to ASME Section IX. Monitoring of the amperage and voltage is carried out during shielded metal arc welding of butt-welded joints for compliance with the WPS. Radiography is then carried out for all field butt-welded joints on piping, and a review of the X-ray film is carried out by a Decundi inspector.
Hydrostatic testing of the system is carried out and is followed by draining of the hydro test fluids. The system is then turned over to the owner of the operation facility for custody, care, control, and commissioning, and Decundi certification is then issued to the owner. Decundi recently carried out the tasks associated with the above narrative for one of our clients.
