Types of drum repairs

1 January 2000

Table 1: Types of drum repairs conducted

Reference	Simulated degradation mechanism	Test areas	Deployed repair scheme
Type A	Isolated minor damage, isolated corrosion pits or pinholes	Base, body, neck, lifting ring, lid	Excavate to sound material, fill with weld and dress flush
Type B	Local significant loss of material thickness due to corrosion	Base, body, neck, lid	Weld patch over area
Type C	Cracking or loss of weld material due to corrosion	Various body and seam welds	Excavate to sound material and replace weld
Type D	More widespread loss of material thickness due to corrosion, eg fully circumferential	Body	Weld over fully-circumferential patching collar
Type E	Local significant loss of material thickness due to corrosion/cracking of butt weld	Lifting ring	Excavate to sound material, fill with weld and grind back to profile

Post to: