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Published byKelley Norman Modified over 9 years ago
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WELCOME TO ALL HAZOP TEAM MEMBERS FOR A BRIEF ON HAZOP STUDY RULES AND REQUIREMENTS
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HAZOP STUDIES OBJECTIVES AND METHODOLOGY
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FAILURES- WHY HAZOP? 2 TYPES OF FAILURES, VIZ: –NATURAL (NOT WITHIN OUR CONTROL) –INDUCED (BY OPERATING CIRCUMSTANCES BEYOND DESIGN) HAZOP IS ABOUT REDUCING THE PROBABILITY OF THE INDUCED FAILURES!
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HAZOP STUDY- OBJECTIVES IDENTIFICATION OF HAZARD and OPERABILITY ISSUES OF A DESIGN BASED ON DEVIATIONS CAUSED DUE TO OPERATION BEYOND DESIGN CAPABILITY
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HAZOP STUDY- ADVANTAGES CONTAIN OPERATIONS WITHIN DESIGN PARAMETERS LESS TRIPOUTS/ LOSS OF PRODUCTION HAZOP IS A HAZARD IDENTIFICATION AND not A PROBLEM SOLVING EXERCISE
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HAZOP PROCEDURE SPLIT UP PIPELINE INTO STUDY NODES DEFINE PARAMETER INTENTION (DESIGN AND OP.) GENERATE DEVIATION (BY APPLYING GUIDEWORD TO PARAMETER) IDENTIFY CAUSES
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HAZOP PROCEDURE IDENTIFY CONSEQUENCE IDENTIFY SAFEGUARDS SUGGEST REMEDIAL ACTIONS (HARDWARE AND SOFTWARE) HAZOP REVIEW LATER
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HAZOP- GUIDEWORDS NONE LESS MORE REVERSE AS WELL AS OTHER THAN
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HAZOP PARAMETERS SPECIFIC –FLOW –TEMPERATURE –PRESSURE –LEVEL –PHASE GENERAL –SERVICES FAILURE –ABNORMAL OPERATIONS –INSTRUMENTATION –MAINTENANCE –SAMPLING –CORROSION/ EROSION –RELIEF –IGNITION –SPARE –COMPOSITION CHANGE
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HAZOP WORKSHEET
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HAZOP ASSUMPTIONS NO SIMULTANEOUS FAILURES (UNLESS COMMON MODE) CAUSES WITHIN NODE, CONSEQUENCES BEYOND NOT CONCERNED WITH CAUSE OF EQUIPMENT FAILURE NO OPERATOR ERROR NO QUESTIONING DESIGN ASSUMPTIONS/ PHILOSOPHIES ETC.
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THANK YOU LET’S GET GOING!
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