PHA

The Uses and Users of PHA/HAZOP Results

For your immediate review, please download the latest free resource paper from PII, titled The Uses and Users of PHA/HAZOP Results, co-written by Jeff Thomas and Paul Casarez, PII Principal Engineers and Instructors, and William G. Bridges, PII President and Instructor, and being presented at the 14th Global Congress on Process Safety in Orlando, Florida. [...]

By | 2018-04-06T14:12:59+00:00 April 6th, 2018|HAZOP, IPLs, LOPA, PHA, SIS|0 Comments

Building Competency in Internal PHA /HAZOP Leaders – Lessons Learned in 40 years of Doing So

For your immediate review, please download the latest free resource paper from PII, titled Building Competency in Internal PHA /HAZOP Leaders - Lessons Learned in 40 years of Doing So, written by William G. Bridges, PII President & Instructor, and being presented at the 14th Global Congress on Process Safety in Orlando, Florida. http://www.process-improvement-institute.com/_downloads/Building_Competencies_in_Internal_PHA-HAZOP_Leaders_-_Final.pdf From [...]

By | 2018-04-04T11:37:33+00:00 April 4th, 2018|HAZOP, LOPA, PHA, Process Hazards Analysis, Process Safety, PSM|0 Comments

Best Practices for PHA Revalidations

For your immediate review, please download the latest free resource paper from PII, titled Best Practices for PHA Revalidations, co-written by Revonda P. Tew - PII Principal Engineer & Instructor, Matias A. Massello - PII Principal Engineer & Instructor, and William G. Bridges, PII President & Instructor, and being presented at the 14th Global Congress [...]

By | 2018-03-30T05:52:40+00:00 March 30th, 2018|Free Resources, PHA, Process Safety, PSM|0 Comments

The Art of PHA Scribing: The Invisible Role

For your immediate review, please download the latest free resource paper from PII, titled The Art of PHA Scribing: The Invisible Role, co-written by Matías A. Massello, PII Principal Engineer & Instructor, and William G. Bridges, PII President, and being presented at the 14th Global Congress on Process Safety in Orlando, Florida. http://www.process-improvement-institute.com/_downloads/The_Art_of_PHA_Scribing_-_Rev_1.pdf From the [...]

By | 2018-03-22T12:48:30+00:00 March 22nd, 2018|Free Resources, GCPS, PHA, Process Hazards Analysis|0 Comments

Recipe for a Complete Process Hazard Analysis – Especially Addressing the Key Demands from US CSB

For your immediate review, please download the latest free resource paper from PII, titled Recipe for a Complete Process Hazard Analysis – Especially Addressing the Key Demands from US CSB, co-written by Revonda Tew, PII Principal Engineer & Instructor, and William G. Bridges, PII President, and being presented today at the 13th Global Congress on [...]

By | 2017-03-27T13:56:29+00:00 March 27th, 2017|CSB, Events, Free Resources, PHA|0 Comments

New Papers in Free Resources on Identifying SIF-SIL as part of PHA/HAZOP, PHA of Non-Normal Operation Modes, and Writing Operating Procedures and Troubleshooting Guides

Just posted in the Free Resources section of the Process Improvement Institute website are three new and invaluable papers related to issues important to process safety management professionals everywhere: Identify SIF and Specify Necessary SIL, and other IPLs, as part of PHA/HAZOP Learn why it is not necessary to “Boldly Go Beyond HAZOP and LOPA.” [...]

By | 2016-12-07T01:33:30+00:00 April 22nd, 2016|HAZOP, PHA, SIF, SIL|0 Comments

Does LOPA really replace 90% of the QRA?

Well, that depends on what you call QRA. Some companies (the folks they have taught) define QRA as only the high level risk assessment that may be performed at the early design phase of a project to make large siting and fire protection (and other mitigation) decisions. LOPA does not replace that specific QRA. But [...]

By | 2016-09-05T05:54:22+00:00 August 26th, 2015|CCPS, HAZOP, LOPA, PHA, QRA|0 Comments

ESTIMATES of ACCIDENT FREQUENCY – Per Scenario and per Site

Do Not believe the math as black and white or as accurate. When we accept a risk of 10-3 per year per facility, we are not necessarily saying we accept 1/10 deaths per year for the facility... we are actually guessing at both factors. 1) The factors we use for LOPA (and for SIF need [...]

By | 2016-09-05T08:47:42+00:00 August 14th, 2015|LOPA, PHA, SIF|0 Comments

Is Consideration of Double-Jeopardy valid in PHA/HAZOP Discussion?

Double-jeopardy (D-J) is NOT an independent protection layer (IPL) failure after an initiating event (IE). All PHA/HAZOP scenarios are of the type of: IE occurs, then IPL 1 fails, then...., leading to Consequences. However, the definition of double jeopardy (D-J) is when two initiating events, which are independent (or we had hoped they were so), [...]

By | 2016-09-05T08:48:48+00:00 August 13th, 2015|Double-Jeopardy, HAZOP, PHA|0 Comments