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Baker Hughes
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The basic objectives in formulating a replacement parts plan are:
• PROMPT AVAILABILITY
• MINIMUM DOWNTIME
• SENSIBLE COST
• SOURCE CONTROL
Guidelines for establishing meaningful inventory levels:
Parts Classification
PART CLASSIFICATION
REPLACEMENT FREQUENCY
PREDICTED AVAILABILITY
CLASS I
MOST FREQUENT
70 percent
CLASS II
LESS FREQUENT BUT
CRITICAL
85 percent
CLASS III
SELDOM REPLACED
95 percent
CLASS IV
HARDWARE
99 percent
CLASS V
PRACTICALLY NEVER
REPLACED
100 percent
Consult the Recommended Spare Parts list (see Section XIX) to define the parts to be included in the inventory plan.
Select parts and specify quantities.
XVII. Replacement Parts Planning
A. Basic Guidelines