Are Separate Taps Making Your Plant LESS Safe?
Instrumentation and control engineers have been taught, no, conditioned through repetition, to design separate [...]
Wireless for SIS?
I recently received a request from a colleague asking for more information regarding the [...]
OSHA Review Panel Ruling on Application of API 556
Many SIS practitioners are concerned about how government and regulators interpret the implementation of [...]
Credit for Operator Response to SIS Failure
Even though I have been doing SIS design for about 20 years now, I [...]
How Many Alarm IPL Can I Credit?
I recently received an enquiry from a customer. He asked if I know of [...]
Jim Gilsinn, Kenexis Senior Investigator speaks at Secure Energy 2013, in Qatat
Jim Gilsinn, Kenexis' Senior Investigator participated in the Secure Energy 2013 Conference in Qatar. The [...]
I Think I Might Have Too Many Fire Detectors…
In my consulting I often hear engineers say, “I think I have too many [...]
Applicability of NFPA 72 to Process Areas
I received the following questions about design of fire and gas detection and suppression [...]
Partial Stroke Test Coverage Assignment Recommendations
During the process of SIL verification calculations, analysts are often required to assess the [...]
Kenexis Receives the ISA 2012 Award for Excellence in Corporate Technical Innovation
Kenexis receives the ISA Award for Excellence in Corporate Technical Innovation for the development [...]
Forgotten Pieces of PFD Equations for SIL Verification
After teaching the ISA EC 52 course – Advanced Design and SIL Verification, I [...]
Using Templates for LOPA
In all of the years that I have been performed LOPA (16 now…), I [...]
Offshore Technology Conference (OTC) 2012
Kenexis plans to attend and host a booth again at this years Offshore Technology Conference. [...]
Real Data!
Last week I taught the ISA EC 52 training course – Advanced SIL Selection. This [...]
Gasoline Spills form Aerosol Clouds, not Vapor Clouds…
Over the past week I have been at a Oil Refinery [...]
Origin of the Five Meter Grid for Gas Detector Spacing
There are many methods used in the process industries for placing gas detectors. These [...]
Ed Marszal Invited to Present at the Instrumentation Symposium
Ed Marszal was invited to present his paper entitled “Shared Field Instruments in SIS: Incidents [...]
When to Use QRA Instead of LOPA
As many practitioners of chemical process risk analysis know, LOPA is a simple tool [...]
Bypassing in Multi-Instrument Voting Arrangements
I have had yet another discussion today on what it means to put something [...]
Varying Response to Fire Alarms by Industry
During my trip to Houston (from Columbus, OH) last week as we were listening [...]
Sharing BPCS and SIS Field Equipment
… Please don’t. I have recently put together a couple of presentations and a [...]
Emerson Global Users Exchange has Accepted Ed Marszal’s Paper
Ed Marszal's paper on "Accidents Caused by SIS/BPCS Field Sharing Devices" has been accepted for [...]
Todd Longendelpher to present at ISA Automation Week
Todd Longendelpher will be presenting his paper "Selection of Set Points for Safety Instrumented Systems [...]
When Do You Apply Machine Guarding Standards in Process Plant?
I am currently in Perth Australia at the IDC Technologies Safety Control Systems conference. As [...]
Ed Marszal chosen to present at ISA Saudi Arabia Section (Dharan Meeting)
Ed Marszal was also chosen to present at the ISA Saudi Arabia Section (Dharan Meeting) [...]