All the welding machines viz. welding generators rectifiers, transformer details, are enclosed in List of Machineries.
Electrode Storage.
Welding electrodes and wires are stored on platforms/racks off the floor in dry and ventilated covered storage to check deterioration.
Weld Procedure Specifications (WPS) and Procedure Qualification Record (PQR)
For individual fabricated and welded jobs, WPS is prepared as per ASME-SEC-IX/AWS D 1.1 coded after approval of WPS by competent authority/client.
Qualifying Tests are conducted on test samples prepared accordingly and PQR is maintained for the same. Competent authority of approval of WPS may be customer, if required as per contract of QC dept. of STELEX. Same WPS and PQR of butt welds/Fillet Welds in SMAW, SAW & GMAW process (Approved by are enclosed as per Annexure-3-1 To Annexure-3-XVI.
Welder Performance Qualification (WPQ)
Qualified welders as per approved WPS do production welds. Qualification tests are conducted as per ASME Sec-IX/other applicable code. If required as per contract, tests are witnessed by customer’s representative.
Re-drying of electrodes
Low Hydrogen and other special electrodes require re-drying prior to production weld,Re- drying is carried out at the temperature, as recommended by electrode manufacturers. STELEX have got four nos. Portabledryers & one storage type baking oven.