WELD REPAIRS ON NEW SUCTION ROLL SHELLS

It is beyond the scope of this TIP to provide criteria for rejection of new shells based on the size or quantity of flaws. Further, this TIP does not describe limits or manufacturing parameters on weld repairs that may affect the serviceability of the roll. However, it is recommended that the matter of weld repairs be negotiated between the purchaser and supplier at the time of ordering a new shell. Welding that is performed on in-service suction roll shells in an attempt to repair handling damage and fatigue cracks is also excluded from this TIP.