The IEC 61511 / ISA 84 Approach to Functional Safety - ChemInnovations 2010
Upcoming SlideShare
Loading in...5
×
 

The IEC 61511 / ISA 84 Approach to Functional Safety - ChemInnovations 2010

on

  • 5,643 views

IEC 61511 and ISA 84, the modern functional safety standards for the process industries, are based on the concept of a safety instrumented function (SIF). Considering safety functions independently ...

IEC 61511 and ISA 84, the modern functional safety standards for the process industries, are based on the concept of a safety instrumented function (SIF). Considering safety functions independently from each other isn't all that new, but taking a SIF-based approach to functional safety lifecycle management provides exceptional benefits in the analysis, implementation, and operation phases of a safety instrumented system. The IEC 61511 approach enables more practical safety lifecycle management, ensuring that just the right amount of technology, complexity, and effort is applied where it is needed. The result of this kind of approach is optimal safety reliability, reduced total lifecycle cost, and better protection against systematic failures that can disable even the most well designed SIL 3 rated safety instrumented system.

Statistics

Views

Total Views
5,643
Views on SlideShare
4,934
Embed Views
709

Actions

Likes
1
Downloads
258
Comments
0

7 Embeds 709

http://www.emersonprocessxperts.com 637
http://prsync.com 62
http://www.linkedin.com 4
http://translate.googleusercontent.com 3
http://www.google.ca 1
http://feeds.feedburner.com 1
http://webcache.googleusercontent.com 1
More...

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

CC Attribution-NonCommercial LicenseCC Attribution-NonCommercial License

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment
  • Just so that we are all clear on the type of safety we are talking about today. We are talking about process safety management, which is not the same as personal safety. There are certainly areas where the two overlap, but they need to be monitored and evaluated separately.With process safety management, we are focusing on the PROCESS – reactor temperatures, column pressures, or anything that would cause a process upset. We are not focusing on occupational issues, such as trips and falls. Personnel safety is a concern in ANY workplace environment.In a processing environment, neither process or personal safety should be looked at from a subjective or intuitive manner. Special, objective consideration is required in any processing plant.
  • Just so that we are all clear on the type of safety we are talking about today. We are talking about process safety management, which is not the same as personal safety. There are certainly areas where the two overlap, but they need to be monitored and evaluated separately.With process safety management, we are focusing on the PROCESS – reactor temperatures, column pressures, or anything that would cause a process upset. We are not focusing on occupational issues, such as trips and falls. Personnel safety is a concern in ANY workplace environment.In a processing environment, neither process or personal safety should be looked at from a subjective or intuitive manner. Special, objective consideration is required in any processing plant.
  • Process safety isn’t concerned with the numbers on boards at plant entrances – “x” days of no injuries/lost time. Process safety encompasses many areas – management of change, mechanical integrity, and functional safety, among other things. Today we will mostly discuss functional safety. Functional safety is the correct functioning of equipment, where failures lead to serious consequences. This includes ensuring that safety-related systems will provide necessary risk reduction needed to achieve safety.
  • Process safety isn’t concerned with the numbers on boards at plant entrances – “x” days of no injuries/lost time. Process safety encompasses many areas – management of change, mechanical integrity, and functional safety, among other things. Today we will mostly discuss functional safety. Functional safety is the correct functioning of equipment, where failures lead to serious consequences. This includes ensuring that safety-related systems will provide necessary risk reduction needed to achieve safety.
  • Process safety isn’t concerned with the numbers on boards at plant entrances – “x” days of no injuries/lost time. Process safety encompasses many areas – management of change, mechanical integrity, and functional safety, among other things. Today we will mostly discuss functional safety. Functional safety is the correct functioning of equipment, where failures lead to serious consequences. This includes ensuring that safety-related systems will provide necessary risk reduction needed to achieve safety.
  • Exida conducted a study of its SIF Design Database which includes records of nearly 10,000 SIF designs done by or reviewed by Exida. The majority of safety functions are SIL 1, followed by SIL 2, then SIL 3 functions and a few SIL 4 functions. This relationship is to be expected bearing in mind the capital and operational cost of implementing higher integrity functions in programmable systems. Most end users seek to reduce SIL 2, 3, and 4 functions to an absolute minimum by process alteration where possible or additional layers of protection that are non-programmable in nature.

The IEC 61511 / ISA 84 Approach to Functional Safety - ChemInnovations 2010 The IEC 61511 / ISA 84 Approach to Functional Safety - ChemInnovations 2010 Presentation Transcript

  • The IEC 61511 / ISA 84 Approach to Functional Safety
    Mike Boudreaux
    DeltaV SIS Brand Manager
  • Process industry environment
  • Increasing ROI drives your
    process safety needs
  • Occupational
    safety
    Mechanical
    Integrity
    Structural
    Design
    FallPrevention
    Inherently
    Safer
    Design
    Policies &
    Procedures
    Facility
    Siting
    Ergonomics
    Work
    Schedules
    Functional
    Safety
    Safety
    Audits
    Personal
    Protective
    Equipment
    Emergency
    Response
    Employee
    Training
    Risk
    Assessment s
    Total
    Recordables
    Management
    Of Change
  • Personal
    safety
    Process
    safety
    Mechanical
    Integrity
    Structural
    Design
    FallPrevention
    Inherently
    Safer
    Design
    Policies &
    Procedures
    Facility
    Siting
    Ergonomics
    Work
    Schedules
    Functional
    Safety
    Safety
    Audits
    Personal
    Protective
    Equipment
    Emergency
    Response
    Employee
    Training
    Risk
    Assessment s
    Total
    Recordables
    Management
    Of Change
  • Process safety
    Mechanical
    Integrity
    Inherently
    Safer
    Design
    Policies &
    Procedures
    Facility
    Siting
    Safety
    Audits
    Functional
    Safety
    Emergency
    Response
    Employee
    Training
    Risk
    Assessment s
    Management
    Of Change
  • Process safety
    Mechanical
    Integrity
    Inherently
    Safer
    Design
    Policies &
    Procedures
    Facility
    Siting
    Safety
    Audits
    Functional
    Safety
    Functional
    Safety
    Emergency
    Response
    Employee
    Training
    Risk
    Assessment s
    Management
    Of Change
  • Functional safety
    PFDavg
    SRS
    RRF
    IEC 61511
    FMEDA
    SIS
    IEC 61508
    BPCS
    PHA
    HAZOP
    SIL
    LOPA
    SIF
  • SIF #1
    SIF #2
  • Source: Exida Safety and Critical Control Systems in Process and Machine Automation July 2007
  • PFDSIF1 = PFDPT-101 +PFDlogic solver+ PFDFV-101
    Logic solver
    SIF #1
    PT-101
    FV-101