I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment PDF Environment, Health, Safety & Security

Measurement Best Practices for Safety Instrumented Systems

By Stephen R. Brown and Mark Menezes |

    The ANSI/ISA-S84.01-1996 standard, which has guided North American users for the past decade in designing safety instrumented systems (SIS) has migrated to a new international standard based on the IEC 61511 and is now known as ANSI/ISA-84.00.01-2004 (IEC 61511 Mod). Over the past few years, global chemical-process-industries (CPI) users have started to adopt this new standard, particularly for new installations. From these installations, "best practices" have started to emerge. Some of these, related to measurement, are documented here. The objective is to allow the user to comply with the new standards, while maximizing real-world safety and availability, and minimizing life cycle cost.   Standards and terminology   Even where application of the new standard is not yet mandatory – for example, in jurisdictions governed by the U.S. Occupational Safety and Health Administration (OSHA) – global CPI users in particular have already started to apply the IEC standard to new installations, for three key reasons.   First, global users recognize that adopting a single standard at all of their sites provides consistent engineering and maintenance practices, potentially reducing design, procurement…
Related Content

ABB

The Big 6 level measurement technologies: Where to use them and why

WHITE PAPER — The Big 6 level measurement technologies: Where to use them and why Anyone who’s ever worn a tool belt knows that sometimes you have to use a tool for something it’s not designed to do. If you don’t happen to have a hammer, a heavy…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Securing the availability of chemical processes through a long-term partnership
Metering gas in biogas plants
The Big 6 level measurement technologies: Where to use them and why
Minimizing particle breakage and mother liquor residue in technical salts production
Expectations are shifting: How measurement solutions can help overcome chemical industry challenges

View More