WELCOME TO ALL HAZOP TEAM MEMBERS FOR A BRIEF ON HAZOP STUDY RULES AND REQUIREMENTS

HAZOP STUDIES OBJECTIVES AND METHODOLOGY

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!

HAZOP STUDY- OBJECTIVES IDENTIFICATION OF HAZARD and OPERABILITY ISSUES OF A DESIGN BASED ON DEVIATIONS CAUSED DUE TO OPERATION BEYOND DESIGN CAPABILITY

HAZOP STUDY- ADVANTAGES CONTAIN OPERATIONS WITHIN DESIGN PARAMETERS LESS TRIPOUTS/ LOSS OF PRODUCTION HAZOP IS A HAZARD IDENTIFICATION AND not A PROBLEM SOLVING EXERCISE

HAZOP PROCEDURE SPLIT UP PIPELINE INTO STUDY NODES DEFINE PARAMETER INTENTION (DESIGN AND OP.) GENERATE DEVIATION (BY APPLYING GUIDEWORD TO PARAMETER) IDENTIFY CAUSES

HAZOP PROCEDURE IDENTIFY CONSEQUENCE IDENTIFY SAFEGUARDS SUGGEST REMEDIAL ACTIONS (HARDWARE AND SOFTWARE) HAZOP REVIEW LATER

HAZOP- GUIDEWORDS NONE LESS MORE REVERSE AS WELL AS OTHER THAN

HAZOP PARAMETERS SPECIFIC –FLOW –TEMPERATURE –PRESSURE –LEVEL –PHASE GENERAL –SERVICES FAILURE –ABNORMAL OPERATIONS –INSTRUMENTATION –MAINTENANCE –SAMPLING –CORROSION/ EROSION –RELIEF –IGNITION –SPARE –COMPOSITION CHANGE

HAZOP WORKSHEET

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.

THANK YOU LET’S GET GOING!