19 Questions
What is the primary purpose of a burner management system (BMS) according to the NFPA 85 Boiler and Combustion Systems Hazard Code?
Ensure safe burner operation by preventing misoperation and damage to fuel preparation and burning equipment.
Which components typically communicate with the Burner Management System (BMS) to ensure safe burner operation?
Igniters, combustion air switches, and pilot SSOVs.
According to Factory Mutual (FM), what customization options are available for operators and burner technicians in a typical burner management system (BMS)?
Limited selection of safety parameters like purge, trial for ignition, and flame failure response time.
What is a key function of a burner management system (BMS) in relation to combustion equipment operation?
Sequence combustion equipment for reliable light off and shutdown.
What type of programming configuration do most burner management systems (BMS) offer?
Basic operational settings that cannot be changed.
What does the NFPA 85 Boiler and Combustion Systems Hazard Code primarily aim to prevent through burner management systems (BMS)?
'Misoperation' of fuel preparation and burning equipment.
What is a key feature of programming controllers that distinguishes them from primary controls?
They have programming that cannot be customized.
What is the purpose of pre-ignition interlock circuitry in programming controllers?
To prevent a purge from beginning if certain switches are not in the correct state.
Why were modern programming controllers developed to be electronic devices instead of electro-mechanical drum sequencers?
To prevent dangerous conditions resulting from shortening or bypassing sequences.
What is the main purpose of purge proving circuitry in programming controllers?
To initiate and prove a purge in the furnace.
Why does the programming control need to recognize when airflow is low for the pilot burner?
To ensure proper fuel-to-air ratio during burner operation.
Which feature distinguishes programming controls from primary controls with respect to managing burner firing rates?
Ability to control burner firing rates
What is the main purpose of a burner management system (BMS)?
To ensure the safe operation of the fuel burning equipment.
Which category of burner management systems is the most complex?
Programming Control
What is the purpose of 'Timed Ignition Period' in a primary control system?
To time the pilot ignition in the burner.
Why is it important for a primary control system to have 'Tined Flame Failure Response' function?
To shut off the flame quickly in case of failure.
What does CSA B149.3 limit for the 'Pilot Trial-for-Ignition Period' in burners?
Maximum 10 seconds
Which component is NOT part of a simple flame relay in a burner management system?
Interlock circuitry
What can happen if the 'Timed Main Flame Trial-for-Ignition Period' exceeds recommended limits?
Explosive gas concentrations may build up.
Test your knowledge on burner management systems which are dedicated to combustion safety and operator assistance in the starting and stopping of fuel preparation and burning. Learn about the components and safety controls involved in ensuring safe burner operation according to the NFPA 85 Boiler and Combustion Systems Hazard Code.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
