![]() ![]() In most provinces of Canada the code is CSA B149.3, which is an adaptation of NFPA, however this is currently legislated as a minimum requirement. New legislation has been introduced to standardise the requirements. With increasing government legislation and regulations as well as mounting lawsuits for accidents in which applicable codes and guidelines have not been adhered to, it is important to review the BMS requirements for both existing and new heater installations. In addition to this, for each installation, it is not unusual for adjacent heaters built two years apart to have a different BMS design, simply because different engineering contractors built them. Most operating companies have their own “standard”, which may still vary from facility to facility. Although some detailed and prescriptive guidelines have been around for many years, the rate and degree of adoption varies significantly within the industry. With Safety Controls or Burner Management Systems, this evolution has not occurred. For most operating companies this is now mandatory and used as a minimum standard with individual companies adding their own requirements. Heater designs and quality standards have followed the practice of API 560. ![]() This has been due to the introduction of government legislation which actively enforces the application of existing codes. Safety controls on direct-fired heaters have continuously evolved over the recent past, and the evolution has accelerated over the last five years. Background ~ Mandatory Purging ~ Permissives & Interlocks ~ Safety Shutoff Valves ~ Pilots & Ignition Systems ~ Dedicated Flame Monitoring Systems ~ Alarms & Shutdowns ~ Combustion Draft / Pressure Alarms & Controls ~ Dedicated Logic Solver Safety Controls and Burner Management Systems (BMS) on Direct-Fired Multiple Burner Heaters Introduction 1. ![]()
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