y required for the following gear units H size i B2-SV-14-D Bevel-helical speed reduction gearbox B2

Flender/Flender Gear Units/Bevel-helical speed reduction gearbox B2

ll be made after conducting the required tests on the electrodes as per relevant standards, and shall be prerogative of the Engineer-in-charge. ) Tungsten electrodes used shall conform to ASME Sec. II FA 5.1 specification. Thoriated Tungsten electrodes shall not be permi tted due to possible radiation hazard. Instead, ceriated Tungsten Electrode (EWCe-2 or equivalent) shall be used for GTA Welding. ) Electrode qualification test records should be submitted as per the Exhibit- (attached) in respect of the electrodes tested by the contracto , for obtaining the approval of the Engineer-in-charge. ) The Contractor shall submit batch test certificate from th electrode Manufacturers giving details of physical and chemical tests carried out by them, for each batch of electrodes to be used. ) All electrodes shall be purchased in sealed containers and stored properly to prevent deterioration. The elect rodes removed from the containe rs shall be kept in holding ovens at temperature recommended by the electro de Manufacture. Out-of-the oven time of electrodes before they are shall not exceed the limits recommended by the electrodes manufacturer. The electrodes shall be handled wit care to avoid any damage to flux covering. 1 of 1 STANDARD TECHNICAL SPECIFICATION MECON LIMITED REGD. OFF: RANCHI 8 OIL & GAS SBU, DELHI DOCUMENT NO. Page 1 of 6 TITLE MEC//0/2/0 REVISION : 0 PIPING FABRICATION AND ERECTION EDITION : 1 ) All low hydrogen type of electrodes shall be rebaked at 3 0qC for 1 hour minimum and stored in ovens kept at 8-1 qC before use. Recommendations of the electrode Manufacturer shall be followed if available. ) The electrodes, filler wires and flux used shall be free from rust, oil, greases, earth and other foreign matter which can affect the quality of welding. 1.3B SHIELDING & PURGING GAS ) Argon gas used in GTA welding for shielding purposes shall 9.9% pure. The purity of the gas shall be certifi