Posts Tagged ‘IEC 61508’

Integrated versus Separate Control and Safety

Posted in Safety on Wednesday, February 6th, 2019. No comments yet
Tags: , ,

Panelists at a session at the 2019 ARC Industry Forum, Safety Systems: Integrated versus Not? Does It Really Matter?, set out to discuss the pros and cons of the approaches and how they accommodate different risk factors. ARC Advisory Group’s Mark Sen Gupta moderated this panel which included executives from Air Products & Chemicals, Dow […]

Filling Gaps in Global Safety Standards

Posted in Final Control Element, Safety on Thursday, May 3rd, 2018. No comments yet
Tags: , , , , ,

A safety instrumented function (SIF)’s purpose is to reduce the risk of a specific hazard. For example, an upset condition in an oil and gas production separator may cause a series of SIFs within a safety instrumented system (SIS) to shut in the wells feeding the separator. A SIF contains a sensor, logic solver and […]

Safeguarding Against Tank Overfills

Posted in Tank Gauging on Monday, January 9th, 2017. No comments yet
Tags: , , , , ,

When storage tanks overflow they can create safety hazards, environmental issues, facility damage and reputation loss. It is critical to have an effective overfill prevention strategy. In this quick, 2:34 video, Overfill prevention solutions help safeguard operations, Emerson’s Ulf Johannesson and Christoffer Widahl describe how an effective overfill prevention solution helps process manufacturers and producers […]

Cures for Common Tank Gauging Problems

Posted in Tank Gauging on Friday, November 11th, 2016. No comments yet
Tags: , , , , , , ,

Accurately knowing the level in liquid storage tanks is not only important from a safety standpoint, it’s important to know for accounting, finance, and sales perspective. Accurate and reliable tank gauging systems can improve the performance of the oil & gas, refining, chemical & petrochemical, and other industries that have these storage tanks as part […]

When is a Safety Integrity Level Rating of a Valve Required?

Posted in Final Control Element, Safety on Tuesday, November 3rd, 2015. No comments yet
Tags: , , , , ,

Control valves play a large role in process control. Emerson’s Riyaz Ali shared with me that he is often asked about their use in safety instrumented functions (also known as safety loops). When asked recently, he shared an ISA Safety Division newsletter from the fall of 2007. Unfortunately, I couldn’t find the newsletter in my […]