TUNE YOUR LOOP: Safety Instrumented Burner Management Systems — A How To Primer

TUNE YOUR LOOP: Questions to keep you sharp.

1. Which of the following Safety PLC architectures is the best to be used in Safety Instrumented Burner Management System Applications:

Tune Your Loop is a series of posts consisting of questions from ISA Training Courses.

  1. 1oo1D SIL 3 certified Safety PLC
  2. 1oo2D SIL 3 certified Safety PLC
  3. 2oo4 SIL 3 certified Safety PLC
  4. 1oo2D SIL 2 certified Safety PLC
  5. Depends on SIL requirements and Lifecycle Costs

2. Which codes / standards are being revised and / or already invoke the concepts of a
Safety Instrumented Systems associated with Burner Management Systems:

  1. NFPA 86
  2. API 556
  3. FM 7605
  4. EN50156-1
  5. All of the above

3. To determine if a Burner Management System is a Safety Instrumented System one

must:

  1. Perform Risk Analysis
  2. Perform Safety Instrumented Function Identification
  3. Allocate Independent Layers of Protection
  4. Perform Safety Integrity Level Selection
  5. All of the above

4. The following statement in a client’s specification is sufficient to design a Safety
Instrumented Burner Management System.

  1. BMS to be supplied to meet SIL 3
  2. BMS to be supplied to meet SIL 2
  3. BMS to be supplied to meet SIL 1
  4. BMS to be supplied to have Safe Failure Fraction of > 95%
  5. None of the above

5. A general purpose PLC can be used as the logic solver in a Safety Instrumented
Burner Management System:

  1. If a SIL of 2 or higher is a required a formal assessment must be completed
    per IEC 61511
  2. If a SIL of 2 or higher is required without any additional engineering
  3. In SIL 1 applications following the requirements of proven-in-use
  4. Only if the control system vendor supports the concept
  5. A & C

 

What are your answers before you read ahead?

1. e

2. e

3. e

4. e

5. e

 

From the ISA Course Safety Instrumented Burner Management Systems: A How To Primer (ES17PC)

pre-instructional survey.

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