• Worker skills and professionalism are certified by the Italian Welding Institute, with:
• Welder qualifications (W.P.Q.)
• Procedure qualifications(P.Q.R.)
• Welding procedure qualifications (W.P.S.)
• Welding engineer qualifications (E.W.T.)

C.O.M.S. workers hold welding qualification certificates. They are qualified according to criteria set out by contract requirements and applicable regulations.

C.O.M.S. has:

- Welding qualifications in accordance with UNI EN 278-1 - AWS D1.1 - ASME

• 135 – Active protective gas welding with consumable electrode rod (mag welding);
• 111 – Arc welding with electrodes;
• 136 - Active protective gas welding with animated electrode;
• 141- Inert gas welding with tungsten electrode (tig welding).

- Welding Qualifications in accordance with ASME IX 135

• 111-Arc welding with electrodes
• 135 – Active protective gas welding with consumable electrode rod (mag welding).

- C.O.M.S. holds the following procedure qualifications:

- Procedure Qualifications in accordance with 15614-1;

• 135 – Active protective gas welding with consumable electrode rod (mag welding);
• 136- Active protective gas welding with animated electrode;
• 121 – Submerged arc welding;
• 141 – Inert gas welding with tungsten electrode (tig welding).

- Procedure Qualifications in accordance with AWS D.1.1.:

• GMAW;
• SMAW.