Boiler Operating Log Program

Instrument readings, as appropriate to the specific boiler system, need to be taken daily for low-pressure heating boilers and at least once per eight-hour shift for high-pressure boilers. These readings must be recorded in the boiler log.

 

It’s important the boiler log be kept in a consistent format for trends to be perceived and followed with preventive action. Standard forms are available for this purpose; however, the log may be more useful if the form is customized for the installation.

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Sample Logs

A separate log sheet is required for each boiler in the facility. One option is having a log sheet that is good for one month (31 days) and provides for two sets of readings per day. It’s recommended that completed logs be three-hole punched and filed in a loose-leaf notebook for future analysis. Management should establish a reasonable period of time for log retention, consistent with the life expectancy of the unit.

 

Boiler log sheets should have provisions for recording weekly and monthly checks with the date of completion. A general comments section allows recording of significant events, such as the date of the annual boiler inspection, repairs conducted, parts replaced, etc. Other events, such as boiler malfunctions, should also be noted.

 

Logs for high-pressure boilers are similar but should provide for at least three readings (one per shift) per day. High-pressure logs normally require additional readings consistent with the system.

 

The most important concern is to keep the log complete, accurate, and updated regularly. Too often, logs are kept with identical readings for an entire month or with gaps in the readings. Management must stress the need for complete, accurate logs and explain the need for analysis and its benefits.

 

Maintenance Log Program

Maintenance items, as appropriate to the specific boiler system, need to be considered for implementation on a regular basis (e.g., daily, weekly, monthly, semiannually, or annually). A checklist of items should be incorporated into a maintenance log with provisions for checking off the item for the appropriate period. A separate log sheet is suggested for each period.

 

The log sheets can be filed in a loose-leaf binder and should be retained as a permanent maintenance record. The log sheets can be used as a handy check-off system when establishing a facility maintenance program. In all cases, the equipment manufacturer’s recommendations should be followed.

 

A well-thought-out operation and maintenance log program designed to address the requirements of the facility will reduce boiler accidents, downtime, and equipment loss. A properly carried out program will focus the attention of both management and operating personnel on the often-overlooked boiler plant, thereby addressing small problems before they become large ones.

 

By Stephanie Campbell, publications editor, National Board of Boiler and Pressure Vessel Inspectors