This Technical Information Paper (TIP) covers liquid penetrant testing of new suction roll shells produced for new
or replacement equipment. This TIP is intended for centrifugally cast, and rolled/welded shells, but may be adapted for
testing forged suction roll shells.
It is recognized that no suction roll shell is perfect and shells can deteriorate under widely different applications
and operating conditions. Therefore, the purpose of this TIP is to establish procedures for documenting the surface
condition of the suction roll shell, as manufactured, so that the information may be compared with data gathered
periodically after the shell is in service. The procedure will normally be used for stainless steel shells, but may be used
for bronze shells.
It is beyond the scope of this TIP to recommend criteria for rejection of new shells based on the size or quantity of
flaws. However, manufacturers will usually have standards for acceptance/rejection of shells that they produce.
Nevertheless, acceptance criteria should be as agreed upon by the purchaser and supplier.
| Number of Pages : | 5 |
| Published : | 01/01/2009 |
