Acknowledgments
This first edition of this guide would not have been possible without the contributions of the following individuals and the support of their companies:
| M. Dennehy | Air Products plc |
| J. Snadden | Air Products plc |
| A Jacobsson | AJ Risk Engineering AB |
| D. Hackney | Akcros Chemicals |
| K. Brookes | Akcros Chemicals |
| R. Vis van Heemst | Akzo Nobel Engineering bv |
| K. Gieselburg | BASF AG |
| K-O. Falke | Bayer AG |
| V. Pilz | Bayer AG |
| H. Crowther | BP Chemicals |
| H. Jenkins | BP Chemicals |
| J-H. Christiansen | Borealis |
| M. Scanlon | Chemical Industries Association |
| F. Altorfer | Ciba Specialty Chemicals |
| T. Gillard | Consultant |
| S. Duffield | EC JRC |
| J-C. Adrian | Elf Atochem |
| P. Lawrie | EniChem UK Ltd |
| M. Powell-Price | EPSC |
| R. Turney | EPSC |
| R. Carter | Eutech |
| A. Ormond | Eutech |
| C. Swann | Eutech |
| S. Turner | Foster Wheeler |
| H. Wakeling | Foster Wheeler |
| T. Maddison | Health and Safety Executive (UK) |
| A. Rushton | Health and Safety Executive (UK) |
| K. Patterson | Hickson and Welch |
| J. Hopper | Huntsman Polyurethanes |
| M. Wilkinson | Institution of Chemical Engineers |
| J. Geerinck | Janssen Pharmaceutica NV |
| G. Gillett | Kvaerner Water |
| A. Poot | Lyondell Chemie Nederland Ltd |
| E. Dyke | Merck |
| C. Downie | Merck and Co Ltd |
| K. Dekker | Montell Polyolefins bv |
| J. Ytreeide | Norsk Hydro AS |
| D. Moppett | Proctor and Gamble European Technical Centre |
| P. Rouyer | Rhoˆ ne-Poulenc |
| C. Caputo | Rohm and Haas Italia |
| G. Dilley | Rohm and Hass (Scotland) Ltd |
| F. de Luca | Snamprogetti S.p.A |
| C. Bartholome´ | Solvay SA |
| P. Depret | Solvay SA |
| J. Ham | TNO |
| K. Ling | Zurich International |
The initiative of the IChemE Safety and Loss Prevention Subject Group and the support of the IChemE Safety Health and Environmental Policy Committee are recognized.
While all of the above contributed to this guide, the authors would like to give special thanks to the following for their contributions and support: Rob Carter, Howard Crowther, Martin Dennehy, Julian Hooper, Hedley Jenkins, Ken Patterson, Chris Swann, Simon Turner, and Robin Turney.
The authors would also like to give special thanks to Phil Aspinall of VECTRA Group Limited for his help and contribution in preparing the second edition of this guide, in particular for the development of Section 10.1 on HAZOP Study of Computer-Controlled Processes.
The authors of the third edition wish to thank Jerry Lane (Optimus) for his help during the preparation of this revision.