Failure Based on Machine Life Cycle

Early Failures

In the early days of its life the machine expected to have some design failures or failures due to unsuited environment or due to user's carelessness, etc. The early failures are usually taken care by the OEM as they are covered under the warrantee/guarantee.

Random Failures

These failures (also called chance failures) occur randomly. The emergency maintenance and breakdown maintenance are suitable depending the significance (critical/normal/unimportant) of the operation carried out on the machine.

Wear Out Failures

These failures occur on age old machines due to worn out parts. In case these failure the OFCM, reconditioning, etc. are used.

Based on Cost of the Failure

• Minor failures,
• Medium failures,
• Major failures, and
• Catastrophes.

Based on Frequency of Failures

• Recurring failures, and
• Rare failures.

Based on Length (or Duration) of Failure

• Short failures,
• Medium failures,
• Long failures,

Based on Intensity of Failures

• Progressive failures,
• Constant failures, and
• Retrogressive failures.