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ISA TR84.00.02-3 : 2002

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 3: DETERMINING THE SIL OF A SIF VIA FAULT TREE ANALYSIS
Available format(s)

Hardcopy , PDF

Superseded date

19-03-2021

Language(s)

English

Published date

01-01-2002

Foreword
Introduction
1 Scope
2 References
3 Introduction to Fault Tree Analysis
4 Definition of terms and symbols
5 Assumptions for Fault Tree calculations for a SIF
6 Procedure
  6.1 Step 1 - SIF description and application information
  6.2 Step 2 - Top event identification
  6.3 Step 3 - Construction of the fault tree
  6.4 Step 4 - Qualitative review of the fault tree structure
  6.5 Step 5 - Quantitative evaluation of fault tree
  6.6 Step 6 - Documentation of FTA Results
7 Base case example calculation for an SIF using FTA - without
  common cause failures and systematic failures
  7.1 Base case example SIF calculation
  7.2 Case 7.2 PFD[avg] calculation (more frequent functional
      test interval)
  7.3 Case 7.3 PFD[avg] calculation (logic solver with higher
      MTTF[D])
8 Example FTA calculations for an SIF including common cause
  and systematic failure
  8.1 Case 8.1 - SIF with incorrect transmitter calibration
  8.2 Case 8.2 - SIF with incorrect transmitter calibration
      with procedural safeguard
Annex A (informative) - Fault tree symbols and logic
Annex B (informative) - Mathematics
Annex C - Index

Describes: a) technical guidance in Safety Integrity Level (SIL) Analysis; b) ways to implement Safety Instrumented Functions (SIF) to achieve a specified SIL; c) failure rates and failure modes of SIF components; d) diagnostics, diagnostic coverage, covert faults, test intervals, redundancy of SIF components; and e) tool(s) for SIL verification of SIF.

Committee
SP84
DevelopmentNote
To be read in conjunction with ISA 84.01 (08/2002) Also available together with other parts as ISA TR84.00.02 PTS 1-5. (11/2008)
DocumentType
Standard
Pages
72
PublisherName
International Society of Automation
Status
Superseded
SupersededBy

13/30273033 DC : 0 BS EN 1012-3 - COMPRESSORS AND VACUUM PUMPS - SAFETY REQUIREMENTS - PART 3: PROCESS COMPRESSORS
I.S. EN 1012-3:2013 COMPRESSORS AND VACUUM PUMPS - SAFETY REQUIREMENTS - PART 3: PROCESS COMPRESSORS
BS EN 61511-2:2017 Functional safety. Safety instrumented systems for the process industry sector Guidelines for the application of IEC 61511-1
ISA TR84.00.02-5 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 5: DETERMINING THE PFD OF SIS LOGIC SOLVERS VIA MARKOV ANALYSIS
ISA TR84.00.02-1 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 1: INTRODUCTION
BS EN 1012-3:2013 Compressors and vacuum pumps. Safety requirements Process compressors
UNI EN 1012-3 : 2014 COMPRESSORS AND VACUUM PUMPS - SAFETY REQUIREMENTS - PART 3: PROCESS COMPRESSORS
I.S. EN 61511-2:2017 FUNCTIONAL SAFETY - SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRY SECTOR - PART 2: GUIDELINES FOR THE APPLICATION OF IEC 61511-1
API 554-2 : 2008 : R2016 PROCESS CONTROL SYSTEMS - PROCESS CONTROL SYSTEM DESIGN
ISA TR84.00.02-4 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 4: DETERMINING THE SIL OF A SIF VIA MARKOV ANALYSIS
ISA TR84.00.02-2 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 2: DETERMINING THE SIL OF A SIF VIA SIMPLIFIED EQUATIONS
API 554-2 : 2008 PROCESS CONTROL SYSTEMS - PROCESS CONTROL SYSTEM DESIGN
EN 1012-3:2013 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
EN 61511-2:2017 Functional safety - Safety instrumented systems for the process industry sector - Part 2: Guidelines for the application of IEC 61511-1

ISA TR84.00.02-5 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 5: DETERMINING THE PFD OF SIS LOGIC SOLVERS VIA MARKOV ANALYSIS
ISA TR84.00.02-4 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 4: DETERMINING THE SIL OF A SIF VIA MARKOV ANALYSIS
ISA 84.01 : 1996 APPLICATION OF SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRIES
ISA TR84.00.02-2 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 2: DETERMINING THE SIL OF A SIF VIA SIMPLIFIED EQUATIONS
ISA TR84.00.02-1 : 2002 SAFETY INSTRUMENTED FUNCTIONS (SIF) - SAFETY INTEGRITY LEVEL (SIL) EVALUATION TECHNIQUES - PART 1: INTRODUCTION

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