The power industry has seen various steam temperature control systems developed over the years to fit the needs of particular applications in the fossil fuel power industry. Plants must consider operating philosophy, plant layout, and type of firing before they ultimately select a system. They do not need a standard that limits the complexity or [...]
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ISA12 Hazloc Standards Members Gather for Intensive Week of Meetings
Veteran and novice ISA12 (Electrical Equipment for Hazardous Locations) Members will gather in Orlando, Florida March 12-16 to cover topics such as intrinsic and increased safety, encapsulation, gas detectors, fiber optics, and installation, maintenance, and repair. ISA12 covers the work of 40 standards, including 25 adoptions of IEC standards. The week will include review of [...]
Security standards committee completes ballot
The ISA99 committee recently completed a ballot on the standard, ISA-62443.03.03 (99.03.03), Security for Industrial Automation and Control Systems: System Security Requirements and Security Assurance Levels. Closing on October 27, 2011, the ballot passed with 18 approval votes and five disapproval votes. Reflecting the widespread interest in the draft, more than 500 comments were received [...]
IEC 6-1131-3
The IEC (International Electrotechnical Commission) 6-1131-3 Standard is a widely recognized international standard for the programming of a PLC. How many ‘Graphical languages’ are there in the IEC 6-1131-3 ? a. 2 b. 3 c. 4 d. 5 The correct answer is A. They are Ladder Diagram (LD) and Function Block Diagram (FBD). Ladder Diagram [...]
ISA12′s Production Level Elevated following Meetings
The ISA12 Electrical Equipment for Hazardous Locations meetings in Cape Cod last month culminated in more than five draft standards out for ballot (covering areas such as gas detectors, nonincendive equipment, and instrument purging). On November 1st, ISA submitted 35 proposals to the NFPA for the 2014 National Electrical Code®, following up on successfully accepted [...]
ISA honors authors at awards ceremony
Each year, the ISA Publications Department and the Standards & Practices Department recognize and thank all authors/contributors who help review, develop, and deliver technical resources to the automation profession via an award ceremony and reception. Held in the Mardi Gras Theater on Tuesday evening, 18 October at ISA Automation Week 2011, several authors received awards for [...]
IEC Product Properties Working Group Completes Two-Day Meeting at ISA
IEC SC65E Working Group 2 held a meeting at ISA in Research Triangle Park, North Carolina on October 11-12, 2011. The leader of the working group, Dr. Peter Zgorzelski of Bayer Technology Services GmbH, reports significant progress was made on IEC 61987 Part 12 and Part 13, involving data structure and elements in process equipment [...]
ISA99 issues security draft for committee ballot
ISA99, Security for Industrial Automation and Control Systems, has issued a draft standard for committee ballot. ISA-62443.03.03 (99.03.03): Security for Industrial Automation and Control Systems: System Security Requirements and Security Assurance Levels, prescribes the system security requirements related to seven foundational requirements defined in ISA-99.01.01-2007 and assigns system security assurance levels to the system under [...]
ISA12 Members Maintain a High Activity Level at October Meetings
More than forty ISA12 (Electrical Equipment for Hazardous Locations) Members will gather in Cape Cod, Massachusetts October 3-7 to cover topics such as intrinsic safety, gas detectors, instrument purging, and fiber optics. ISA12 covers the work of 40 standards, including 25 adoptions of IEC standards. During the week, the group will be working on submission [...]
Viewpoint on ISA TR84.0.02 Simplified Methods and Fault Tree Analysis
Abstract: ANSI/ISA-S84.01-1996 and IEC 61508 require the establishment of a safety integrity level for any safety instrumented system or safety related system used to mitigate risk. Each stage of design, operation, maintenance, and testing is judged against this safety integrity level. Quantitative techniques can be used to verify whether the safety integrity level is met. [...]