ABB Functional Safety blog
Thursday, 16 March 2017
What does the term ‘MTTR’ signify for a SIF?

What does the term ‘MTTR’ signify for a SIF?

A Safety Requirements Specification (SRS) will typically specify the values for Mean Time to Restoration for each identified Safety Instru...

Read more »
Posted by Ed Neale at 16:41 0 comments
Email This BlogThis! Share to X Share to Facebook
Labels: ABB , Functional Safety , John Walkington , Mean Time to Restoration , MTTR , Rafal Selega , Safety Instrumented Functions , Safety Lead Competency Centre , SLCC , Suresh Sugavanam
Location: Howard Rd, Saint Neots PE19 8EU, UK
Newer Posts Older Posts
Subscribe to: Posts ( Atom )

Translate

Pages

  • Home
  • Functional Safety Insights portal page

About us

Functional Safety is a multi-faceted subject that requires a thorough understanding of the factors involved and how they interact with one another to help minimise the risk of failures caused by operator errors, hardware failures and environmental changes.

Created by ABB's Safety Lead Competency Centre (SLCC), this blog covers the key challenges and considerations involved in the design, operation and management of functional safety systems in industrial applications.

Popular Posts

  • What does the term ‘MTTR’ signify for a SIF?
    A Safety Requirements Specification (SRS) will typically specify the values for Mean Time to Restoration for each identified Safety Instru...
  • I use my process control system for all automation requirements. So what is so special about a SIS?
    Many people are unsure of the the difference between a safety instrumented system (SIS) and your process control DCS (BPCS). Both have ...
  • What do I claim is my Proof Test coverage?
    Nowadays many devices are designed with efficient internal diagnostic capabilities. For some smart transmitters the automatic diagnostics...
  • Do I really need my SIS to be cyber secure?
    In the good old days, most Industrial Automation and Control System (IACS) networks were air-gapped from the business network and the Int...
  • Calculating the proof test effectiveness for a Partial Valve Stroke Test application
    The final element of a safety instrumented function is usually the greatest contributing part of the overall SIF PFDavg calculation. Valv...
  • Do you need to use third party certified software tools when configuring a safety instrumented system (SIS) or SIS devices?
    There is always a dilemma for users as to whether it is a mandatory requirement to use a third party certified tool when configuring a saf...
  • How to remain safe and profitable during Industry 4.0
    The arrival of Industry 4.0 is already starting to transform modern industrial operations, paving the way for the smart factories of the fu...
  • Should Functional Safety impact assessments be undertaken when modifying a SIS?
    Typically, many organisations follow a strict regime when it comes to handling operational changes via defined management of change proced...
  • What is the target failure measure for your SIF?
    "Which failure measure should I use for my Safety Instrumented Function (SIF)? Is PFDavg or PFH more appropriate?" Unfortunately...
  • Do purchasing teams really need to worry about Functional Safety & SIL?
    When it comes to complying with the safety standards IEC 61508, IEC 61511 and IEC 62443 for a safety and security project, it is not...

Archive

  • ►  2018 ( 4 )
    • ►  June ( 1 )
    • ►  May ( 2 )
    • ►  February ( 1 )
  • ▼  2017 ( 6 )
    • ►  December ( 1 )
    • ►  September ( 1 )
    • ►  May ( 1 )
    • ▼  March ( 1 )
      • What does the term ‘MTTR’ signify for a SIF?
    • ►  January ( 2 )
  • ►  2016 ( 1 )
    • ►  December ( 1 )
Powered by Blogger.
 
Copyright © 2013 ABB Functional Safety blog All Right Reserved
Blogger Designed by IVYthemes | MKR Site
Posts RSS • Comments RSS