saudi aramco saes w 011
TRANSCRIPT
5 Approved Welding Processes
• Shielded Metal Arc Welding (SMAW)
• Gas Tungsten Arc Welding (GTAW)
• Submerged Arc Welding (SAW)
• Gas Metal Arc Welding (GMAW)
• Thermit Welding
• Stud Welding
7.4.7.1 Position The direction of welding for the
vertical position shall be essential variable……
Welding Vertical Up Welding Vertical Down
9 Joint Details
• 9.1 All pressure containing welds shall be made with multiple passes
Multiple Pass Weld
9 Joint Details
• Full penetration groove joint less than 30 degrees shall not be used without approval
11.3 Joint Preparation
• 11.3.1. Foreign matter shall be removed from the weld surface at least 25 mm of the adjacent base metal prior to welding…
25 mm
25 mm
11.3 Joint Preparation
• 11.3.3. Fittings that have been cut shall be checked for any laminations before welding…
Examination for laminations
11. 16 Weld Encroachment• Weld encroachment is the
minimum distance between welds…
Minimum distance between parallel but welds shall be 20mm or three times the wall thickness whichever is greater
12 Preheat
• 12.4 Temperature indicating crayons, thermocouples, or contact pyrometers shall be used…
Temperature indicating crayon
12 Preheat
• 12.5 The preheat shall be established over a minimum distance of 75 mm each side of the weld…
75 mm
75 mm
13 Post Weld Heat Treatment• 13.1 Postweld heat treatment (PWHT)
shall be in accordance with ASME B31.3
Stress relieving
14 Production Weld Hardness Testing• The maximum hardness for P-1 materials is
225 BHN for sweet service and 200 BHN for sour service…
Equotip hardness tester
15 Inspection Access
• 15.1 Saudi Aramco representatives shall have free access to the work at all times…
16 Weld Identification
• 16.1 All weld joints shall be marked for identification by a weld number and a weld symbol…
Weld 01Welder 123
Inspection
• 17.2 Ultrasonic testing may be substituted for Radiography if approved by Saudi Aramco Inspection…
Liquid Penetrant
• 17.5.2 The acceptance criteria for Liquid Penetrant examination shall be ASME SEC VIII…
18 Repairs
• Cracked welds (except crater cracks) shall be cut out unless a repair is approved by CSD…
Cracked fillet weld
Weld Cracks
19 Miscellaneous Requirements
• 19.1 For field welding ,remote current controls shall be used if the welding is more than 30m from the welding power source…
Remote current control
Low Hydrogen Electrodes 5.1
Drying : Prior to use all electrodes shall be dried at260 –
430 C for two hours minimum . The drying step may be deleted if the electrodes are supplied in the dried condition in a hermetically sealed metal can…
Low Hydrogen Electrodes 5.1
Storage: After drying, the electrodes shall be stored
continuously in ovens at 120 C
Electrode oven