Heattreatment on spherical Tank

PWHT on huge spherical tank in ASPC

Hamed Changizi

Tank detail:

  • Dia:26 meter
  • Maximum Thk: 85 mm
  • PWHT process length: 28 hr
  • Heating rate ~ 45 ‘C/Hr
  • Holding time: 3.5 Hr
  • Cooling rate ~ 60’C/Hr
  • PWHT Burners quantity: 2
  • Blowers for ventilating during PWHT Process: 2
  • Thermocouples count: 132

This process accomplished by hamedsoft engineering group in Feb,2014