Equipment Maintenance Log Book

Equipment Maintenance Log Book or simply Log Book is an essential record which must be kept up to date. The log book should contain the following minimum details on its front page:

1. Equipment Model

2.Serial No

3. Date of Commissioning

4.Recommended Lube Oil (LO) to be used

5. Ratings (like Power, Temperature,Pressure or any other applicable parameters)

6.Duty Cycle

7.Safety Precautions etc.

Every time any maintenance is carried out, the service personnel should clearly record the date, nature of maintenance done, spares replaced, no. of hrs the machine operated before taking out for maintenance, any unanticipated defect noticed/rectified etc.

This log book should accompany the machines like gas turbines when they are send for major overhaul at manufacturer's facility. The scope of work is ascertained on the basis of the log book information.

Many a times some of the good parts are removed and defective one are fitted before the machine is sent for overhaul (OH). This is a bad practice as the information available in the log book may differ from the physical condition of the engine parts and manufacturer may wrongly recommend replacement of additional parts which may not be warranted and incur additional expense. It is always advisable to order new parts for replacement rather than removing and keeping them from engines sent for OH.

Log book provides a system approach for carrying out the maintenance. Service personals may come and go, the log book provides a basis for carrying out routine maintenance as well as major OH.

One last word about the book: The log book is normally filled immediately after the completion of the job. The hands of technicians may be dirty while filling. This fact should be kept in mind while selecting the paper and cover for the book. It is advisable to have cloth covering and good quality paper for the books.

It is the responsibility of the Maintenance In charge (MI) to ensure that the log books are filled and kept up to date.