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The Practical Pumping Handbook ~ . . . . . . . . . . . . . . . . . . . . . . . . .

Erosion problems
9 Upgrade the material selection
9 Check change in pumpage
Bent shaft
9 Install a new shaft

Low flow operation
9 See Figure 11.3
9 Increase the shaft strength. (See 11.4.2.2)
Bearing failure

9 See Chapter 11.8
Excessive wear
9 Eliminate pipe strain
9 Improve shaft alignment
Galling
9 Eliminate pipe strain

9 Upgrade the material selection
9 Check wear ring clearance
9 Skills training needed

11.5.3 Shaft

Wear from Seal~Packing

9 Change to non-fretting mechanical seal
9 Upgrade the material selection
9 Use less abrasive packing
9 Control the solids in pumpage
Oil Seal fretting
9 Change to bearing isolators
Damaged by seal removal

9 Change to non-fretting mechanical seals that don't require sleeves
Corrosion
9 Upgrade the material selection

Im 192