Disclaimer

The content of this site has been prepared by the members of the thematic network "S2S - A Gateway for Plant and Process safety". Since the conditions of use are beyond our control we disclaim any liability, including patent infringement, incurred in connection with the use of these products, data or suggestions.

The thematic network S2S is a European Community Project carried out in the "Competitive and Sustainable Growth" programme and funded in part by contract number G1RT-CT-2002-05092.
 

Glossary

in
A B C D E F G H I J K L M N O P Q R S T U V W Z All terms
 

Safety Integrity Levels (SIL)

A performance criterion for a SIF defining the probability of the SIF failing to perform its function on demand.

Safety Integrity Level Demand Mode of Operation

Average Probability of Failure on Demand

Risk Reduction

4

>=10-5 to 10-4

>10,000 to =<100,000

3

>=10-4 to 10-3

>1,000 to =<10,000

2

>=10-3 to 10-2

>100 to =<1,000

1

>=10-2 to 10-1

>10 to =<100

See IEC 61511, Part 1 (IEC 6511) for SILs for Continuous Mode of Operation.

References:

  • Layer Of Protection Analysis - Simplified Process Risk Assessement, 2001, CCPS, ISBN 0-8168-0811-7
 

Related Material


Contentbelongs to:Layer of protection analysis (LOPA)
Contentbelongs to:Ignition prevention
 
Copyright by S2S - A Gateway for Plant and Process Safety - All Rights Reserved.
Web site engine's code is Copyright © 2003 by PHP-Nuke. All Rights Reserved. PHP-Nuke is Free Software released under the GNU/GPL license.
Page Generation: 0.085 Seconds