Heattreatment on spherical tank

PWHT on Spherical tank in Arak petrochemical

Hamed Changizi

PWHT on TK-810 , TK-811 in Shazand, Arak Petrochemical In Jan,2014

Tank Detail:

  • External Dia: 18m
  • Maximum Thickness: 50mm

PWHT Process detail:

  • Heating Rate: 52’C/Hr
  • Holding Temperature: 580~620 ‘C
  • Cooling Rate: 65’C/Hr

Ambient temperature during PWHT was -10’C