HAZOP: Guide to Best Practice

3rd Edition - April 8, 2015
Authors: Frank Crawley, Brian Tyler
Language: English
Paperback ISBN:
9 7 8 - 0 - 3 2 3 - 3 9 4 6 0 - 4
eBook ISBN:
9 7 8 - 0 - 1 2 - 8 0 3 5 8 0 - 1

HAZOP: Guide to Best Practice, 3rd Edition describes and illustrates the HAZOP study method, highlighting a variety of proven uses and approaches. This updated edition brings a… Read more

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HAZOP: Guide to Best Practice, 3rd Edition describes and illustrates the HAZOP study method, highlighting a variety of proven uses and approaches. This updated edition brings additional experience with which to assist the reader in delivering optimum safety and efficiency of performance of the HAZOP team. HAZOP is the most widely-used technique in the process industries for the identification of hazards and the planning of safety measures.

This book explains how to implement HAZOP techniques in new facilities and apply it to existing facilities. The content covers many of the possible applications of HAZOP and takes you through all the stages of a study. This simple, easily digestible book is a favorite in the chemical and process industries.

Chapter 1. Introduction

1.1 Aims and Objectives
1.2 Essential Features of HAZOP Study

Chapter 2. Process Hazard Studies

2.1 HS 1—Concept Stage Hazard Review
2.2 HS 2—HAZID at Front-End Engineering Design (FEED) or Project Definition Stage
2.3 HS 3—Detailed Design Hazard Study
2.4 HS 4—Construction/Design Verification
2.5 HS 5—Pre-Commissioning Safety Review
2.6 HS 6—Project Close-Out/Post Start-Up Review
2.7 HS 0—Consideration of Inherently Safer or Less Polluting Systems
2.8 HS 7—Demolition/Abandonment Reviews
2.9 Overview of Hazard Studies
2.10 Illustrative Checklist for HS 2

Chapter 3. The HAZOP Study Method

3.1 Essential Features
3.2 The Purpose
3.3 Limitations

Chapter 4. The Detailed HAZOP Study Procedure

4.1 The Description and Design Intention
4.2 Generating a Deviation
4.3 Identifying Causes
4.4 Evaluating Consequences
4.5 Safeguards (Protection)
4.6 Risk Assessment
4.7 Recommendations/Actions
4.8 Recording
4.9 Continuing and Completing the Analysis
4.10 An Illustration of the HAZOP Study Process

Chapter 5. Organizing a HAZOP Study

5.1 Defining the Scope and Objectives of the Study and Establishing the Boundaries
5.2 Appointing a Team Leader and Selecting the Team
5.3 Preparation

Chapter 6. Carrying Out a Study

6.1 Premeeting with Client
6.2 Planning the Meetings
6.3 The Study Meetings
6.4 Coordinating and Reviewing Responses
6.5 Completing and Signing Off the Report(s)
6.6 Follow-Up of Actions and Management of Change

Chapter 7. Recording and Auditing

7.1 Background Information
7.2 Section Headings
7.3 The Recording Format for the Detailed Examination
7.4 The Level of Recording
7.5 The Content
7.6 Computer Recording
7.7 Auditing a HAZOP Study

Chapter 8. Training

8.1 Team Members
8.2 Scribe
8.3 Team Leader

Chapter 9. Company Procedures for HAZOP Study

Chapter 10. Advanced Aspects of HAZOP Study

10.1 HAZOP Study of Computer-Controlled Processes
10.2 Human Factors
10.3 Linking HAZOP Studies to LOPA

Chapter 11. Specific Applications of HAZOP

11.1 Modification of Existing Operations
11.2 Repeat Designs—HAZOP-by-difference
11.3 Periodic Hazard Studies and the HAZOP of an Existing Plant
11.4 Operating Procedures
11.5 Pilot Plant and Laboratory Operations
11.6 Drains, Vents, and Other Interconnections Between Plants
11.7 Commissioning and Decommissioning
11.8 Start-Up and Shutdown
11.9 Construction and Demolition
11.10 Contract Operations

Chapter 12. Factors for a Successful HAZOP Study

12.1 Throughout the Study
12.2 Before the Study
12.3 During the Study
12.4 After the Study

Appendix 1. The Guideword-First Approach to HAZOP

Appendix 2. The Use of Checklists Within HAZOP Study

Appendix 3. An Illustration of HAZOP Study for a Continuous Operation

A3.1 Methanol Injection
A3.2 General Process Data
A3.3 The Issues
A3.4 Methodology

Appendix 4. An Illustration of HAZOP Study for a Batch Operation

A4.1 Introduction
A4.2 The Company, Site, Plant, and Process
A4.3 The Process Stages Selected for HAZOP Study
A4.4 HAZOP Study of Steps 9 and 10, the Reaction Stage and Workout
A4.5 A Section of the HAZOP Study Report for the Batch Reaction (See Table A4.1)

Appendix 5. An Illustration of HAZOP Study for a Procedure

A5.1 Background
A5.2 Detailed Proposed Sequence
A5.3 The HAZOP Study
A5.4 Final HAZOP Study Report
A5.5 Authors Notes on this Procedure

Acronyms and Abbreviations

References and Bibliography

Bibliography

Frank Crawley

Charter Chemical Engineer. 7 Years of experience in Production, Commissioning and Start Up of Olefine Plants (1963 – 70). 10 years of special duties on Nylon Intermediates much as the result of the Flixborough Explosion under the tutelage of the late Trevor Kletz (1970 – 81). 10 years of leading the Loss Prevention group in an oil major (1981- 91). Over 10 years consultancy in the offshore oil industry and over 15 years (part time) in Academe (Chem Eng). Over 50 refereed technical papers under IChemE and others. IChemE Franklin Medal for teaching safety at under and post graduate levels and co-awardee of the IChemE Brennan Medal for the book “HAZOP Guide to Best Practice” (Edition 1). Co-author of the IChemE books: HAZOP: Guide to Best Practice and Hazard Identification Methods (Edition 1) with Brian Tyler.

Affiliations and expertise

University of Strathclyde and Atkins, UK

Brian Tyler

Brian Tyler established his consulting company with his colleague Bob Simmons in 1990. At that time he was also on the staff of the chemistry department at the University of Manchester Institute of Science and Technology (UMIST). His research work at that time focused on the areas of fire, explosion, self-heating and kinetics, including work on industrially related problems. By 1990 he had over 20 years’ experience of organising meetings and courses under the general heading ‘Safety in the Chemical Industry’. These included HAZOP and HAZAN, Fire and Explosion, Accident Investigation, Gas Dispersion and many others. His course “HAZOP study for team leaders and team members" is still run by the IChemE under the leadership of Phil Aspinall. Another major activity has been the authorship to two IChemE monographs. The first, written with Frank Crawley and Malcolm Preston, is ‘HAZOP, Guide to Best Practice’; the second with Frank Crawley is ‘Hazard Identification Methods’. In 2011 he was one of the first group elected to the newly established class of Associate Fellow of the Institution of Chemical Engineers.Physical chemist. Cambridge University and UMIST. Research into gas phase processes and explosions including self-heating of solids and gases. Organiser of the Safety in the Chemical Industry postgraduate courses held at UMIST from 1969 to 1990, especially covering HAZOP and HAZAN. With S&T Consultants from 1990-2015 delivering training courses on HAZOP and other safety methods within the UK and overseas. Co-author of the IChemE books: HAZOP: Guide to best practice and Hazard Identification Methods.

Affiliations and expertise

S&T Consultants, UK

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HAZOP: Guide to Best Practice

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Frank Crawley

Brian Tyler