Sigma provides QA/QC professionals to inspect the manufacturing/fabrication and maintenance of oilfield (midstream), refinery (downstream), and chemical plant equipment/systems. Our personnel deliver ongoing QA/QC for the constructed systems. Inspectors/technicians have multiple accreditations and/or certifications from the following organizations:

1. AWS/PCN Certified Welding Inspectors – CWI
2. API Inspectors
   1. 510 – Pressure Vessels
   2. 570 - Pressure Piping
   3. 653 – Storage Tanks
3. CSWIP Inspectors
   1. Welding
   2. NDT/NDE
   3. QA/QC
4. ASNT Technicians = Level I, II, & III - RT, MT, PT, VT, UT, MFL
5. AMPP/NACE/SPCC Inspectors
   1. AMPP Basic Coatings Inspector (formerly NACE CIP Level 1)
   2. AMPP Certified Coatings Inspector (formerly NACE CIP Level 2)
   3. AMPP Senior Certified Coatings Inspector (formerly NACE CIP Level 3)
6. NCCER Electrical & Instrumentation (E&I) Inspectors

Certified professionals are available for call-out or long-term assignments. Sigma provides turnkey QA/QC inspection and reporting services complete with equipment, consumables, vehicles (mileage), and accommodations required to perform Quality Assurance / Quality Control.