Download - Welder Qualification Flow Chart (Updated)
Lifting Trunnion Location marking and Thickness verification of Reactor sell
Paint removed
fit up inspection & pre heat temp. verification (240C)
Welding process- SMAW Consumable -E7018,interpass temp- min 240 C
Post heat temp (280 to 300C for min 30 minutes)
Release for Lifting the Reactor
If Hardness Above 200 HB
DPT & Hardness test (max 200HB)
DPT & Hardness test ( max 200 HB)
Failed
PWHT AT 593-649 C soaking temp
Failed
Passed
Release to Lifting the Reactor
Passed
Qualified Welder
Transfer Welder from LPG-4 Project
Test on FCC-Project
First Production Weld Two Joint's for any line class (5%, 10% & 100)
First Production Weld Ten Joint's for any line class (5%,10%&100%)
If RT Repair in for 5% & 10% line class
P1 & P2 will be carried out same date or near as date
Welder overall RT % will be maintained 5% ( other then first production weld & Penalty Joint's
Failed
Qualified Welder
Transfer Welder from LPG-4 Project
Test on FCC-Project
First Production Weld Two Joint's for any line class (5%, 10% & 100)
First Production Weld Ten Joint's for any line class (5%,10%&100%)
If RT Repair in for 5% & 10% line class
P1 & P2 will be carried out same date or near as date
Welder overall RT % will be maintained 5% ( other then first production weld & Penalty Joint's
Failed