Case Study of a Safety Instrumented Burner Management System (SI-BMS)

by Mike Scott, P.E., CFSE, aeSolutions Founder



This case study will discuss the application of the safety lifecycle as defined by ANSI/ISA 84.00.01‐2004 (IEC 61511 mod) to two single burner multiple fuel boilers. Each boiler is capable of firing natural gas, oil and/or waste gas, in order to supply the plant header with 1,365 psig steam at a maximum capacity of 310,000 lb/hr. The project team included the end client task force at the manufacturing facility, the engineering firm with design/procurement responsibility, the boiler OEM, the burner/gas train OEM, and the safety instrumented system consultant. This paper will cover:


  • the development of a SIS front end loading package

  • the project cost savings realized attributed to following the safety lifecycle

  • the challenges encountered during the design process associated with the implementation of the safety lifecycle across a diverse project team

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Keywords

Burner Management System, BMS, Boilers, Construction Industry Institute, CII, Detailed Design, Front End Loading, FEL, Safety Integrity Level, SIL, Safety Instrumented System, SIS, SI‐BMS, Safety Instrumented Burner Management System, ANSI/ISA 84, NFPA 85, Lifecycle Cost Analysis, Benefit‐To‐Cost Ratio

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