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55 Licensed Copy: Puan Ms. Norhayati, Petroliam Nasional Berhad 4397000, 01 October 2003, Uncontrolled Copy, (c) BSI Guide
word Element Deviation Possible causes Consequences Safeguards Comments Actions required Action
by 10 Other than Vaporize Possible
furnace Ignition of a mixture of
natural gas and air Vaporizer destroyed Interlocks, etc.
on furnace Safeguards may
not be adequate – C onsider installing a fire
shut-off valve on oil
supply NE – R eview safeguards on
explosion Vapour oil
inlet – L eakage – – F ailure of coil C onsider installing a fire
shutoff valve on oil supply – P rovide for emergency
snuffing steam to the
furnace – C onsider installing a high
temperature alarm or trip
in the stack to shut gas
supply valves – E nsure routine inspection
of coil 6 8812 E I2:C100 No. BS IEC 61882:2001 56
Table B.6 ( continued) 11 Other than Oil flow Major fire fed from
oil supply Major fire in furnace
fed from oil supply
and back flow of oil
vapour from process.
Emission of fumes
and smoke. None Probably damage of
the fire box NE – 1 11 – © BSI 28 August 2001
1002−80 ISB © BS IEC 61882:2001
6 1882 Ó I EC:2001 – 59 – Bibliography
A Guide to Hazard and Operability Studies. C hemical Industries Association, London,
UK, (1977), 1992. (2) Das PAAG-Verfahren. I nternational Social Security Association, (ISSA), c/o B.G.
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text in Dutch, appendices in English. (4) Kletz, Trevor A. H AZOP and HAZAN – Identifying and Assessing Chemical Industry
Hazards , Institution of Chemical Engineers, Rugby, UK, 1999, ISBN 0-85295-421-2. (5) Knowlton, Ellis. A n Introduction to Hazard and Operability Studies, the Guide Word
Approach , Chemetics International, Vancouver, Canada, 1992, ISBN 0-9684016-0-0.
(Also available in French, Spanish, Finnish, Arabic, Chinese, Hindi and Korean). (6) Knowlton, Ellis. A m anual of Hazard & Operability Studies, The creative identification of
deviations and disturbances. C hemetics International, Vancouver, Canada, 1992, ISBN
0-9684016-3-5. (7) Redmill, Felix; Chudleigh, Morris and Catmur, James. S ystem Safety: HAZOP and
Software HAZOP . Wiley, 1999, ISBN 0-471-98280-6. (8) Crawley, Frank; Preston, Malcolm and Tyler, Brian, H AZOP: Guide to best practice.
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Rugby, England, IChem, 2000, ISBN 0-85295-427-1. (9) Guidelines for Hazard Evaluation Procedures. C enter for Chemical Process Safety of
the American Institute of Chemical Engineers, New York, USA, 1999, ISBN 0-81690491-X. (10) Defence Standard 00-58, HAZOP Studies on Systems containing Programmable
Electronics, M inistry of Defence, UK, 2000. ___________ © BSI ISB ©
1002−8028ISB © 2001 57
75 BS IEC
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