Batch Digester Inspection Interval Extension, 2002 Fall Technical Conference
Current industry standards recommend or mandate inspections and evaluations of batch digesters on an
annual basis. In many instances, paper mills have completed extensive repairs and overlay of their batch
digesters to ensure safe continued operation. In addition, inspection and repair techniques have improved
to enhance this safety record. Future careful examinations of the digester, with adequate repairs to
deficient areas and careful record keeping, may allow a mill to extend the inspection interval to two years
and possibly three depending on the particular circumstances.