Voices: Lipták

SIS: Standards by Committee

SIS Committees Don't Like Plain English. Their work is Peppered with High-Tech Buzzwords, Abbreviations and Acronyms That Make These Documents Harder to Read and Hence Less Valuable

By Bela Liptak

We all know the saying that the "camel is a horse designed by committee." Today's safety instrumented system (SIS) standard (ANSI/ISA 84.00.01 (2004), which is a relaxed version of IEC 61508/61511 (1996), is not a camel yet, only a camel baby. It can still be trained, but training needs trainers! Before explaining why I say this, let us look at what a safety integrity level (SIL) is.

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The next generation of smarter valves

In the next decade, much improvement and change is expected in the design of smart and self-diagnosing control valves, with potential advantages outweighing the required investment of time and money.

05/10/2005

The next generation of smarter valves – Part 2

Much improvement and change is expected in the design of smart and self-diagnosing control valves, with potential advantages outweighing the required investment of time and money.

07/10/2005

The power of the Sun: Part 1

In discussing global energy issues, CONTROL columnist Béla Lipták, PE, estimates that global warming damage will consume as much as 20% of the global GDP by 2020 even without energy wars.

01/05/2007

Tuning Interacting Controllers

Is the Famous Ziegler-Nichols (ZN) Open-Loop Tuning/Closed-Loop Tuning Parameter Calculation for Interacting or Non-Interacting PID?

05/14/2012

Ultrasonic Flowmeters for Paper Pulp; Flowmeter Accuracy

A Reader Asks if Controlotron System 1010P Universal Portable Flowmeter Can Measure Pulp Flow With 1.5% Consistency. Also, Why Vendors' Literature, Often Give Accuracy Measurements as a Percentage but Without Stating of What

06/14/2013

Using Feed-Forward PID for External Reset

Is There a Way to Create an External Reset on a Standard PID Feedback Controller?

03/08/2012

Valve Failure Positions; Controlling Global Processes

Readers Ask About PID Controller Action, Valve Failure Positions and Global Process Trends for Industrial Applications

06/12/2012

Vibration of Valves and Piping

What Would Cause Vibration in a Gas Service, and What Protection Can Be Applied If It Occurs?

12/29/2013

What Caused the Three Mile Island Accident?

Liptak Describes the Sequence of Events and the Primitive Controls That Led to the Three Mile Island Accident

05/11/2009

What Is the Proper Role of Automation?

Automated System Can Lead to More and More Complexity and Confusion. Until the Instruments, Automation and Controls get Extremely Reliable, We'll Still Need to Keep Humans in the Loop

08/21/2014

Why Nuclear Needs Process Automation

The Key to the Safety of Nuclear Power Plants Is to Maintain the Availability of Coolants, Even if All Electric Power Supplies Fail

11/01/2012

Why do we have global warming?

CONTROL columnist Béla Lipták, PE, finishes his Lessons Learned series on global warming, and what the process control confraternity can do about understanding and perhaps controlling it.

05/18/2006