Designing, reviewing and replacing Burner Management Systems (BMS) is a speciality of Exothermic Engineering. Principal engineering personnel at Exothermic Engineering maintainseats on several NFPA 85 Technical Committees, including:
Technical Committee on Fundamentals
Technical Committee on Multiple Burner Boilers
Technical Committee on Stokers
Safety considerations change as equipment improves and the industry gathers incident data and learns how to improve. In response, NFPA 85 is updated and re-issued every six years (the latest is 2011). Having a current BMS technical review in your files is extremely important for mitigation of personnel injury and equipment damage, and to minimize liability risk. We have performed major in-depth BMS reviews for several large utilities on multiple units. A typical review will compare existing BMS design to the version of NFPA 85 that applies (either original or updated via a "Major Alteration") as well as to the current version. The process includes a review of applicable P&IDs, control logic drawings, control SAMA drawings, the BMS system architecture and configuration, FD & ID fan curves, load profile, equipment and duct design pressures, instrument logical setpoints, operating procedures, boiler Performance Summary Sheets, and boiler drawings. Calculations include furnace volume and allowable purge rates, minimum air flow rate, and igniter heat input for igniter classification. The procedure is client-interactive, resulting in a detailed report. A typical report Table of Contents would include:
Executive Summary
Logic Review Description
Review Procedure
Documents Reviewed
Overall System Review
System Architecture
Trip Signal Communication
Power Supply
Redundancy
Furnace Purge
Boiler Trip
Combustion Control
Mill Startup & Shutdown
Mill Inerting
Furnace draft
Igniter Size
Equipment Design vs Operating Pressure
Operating Scenario Study
Results Summary & Recommendations
Appendix