Troubleshooting Metodhology Rev.1
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Transcript of Troubleshooting Metodhology Rev.1
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8/18/2019 Troubleshooting Metodhology Rev.1
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TroubleshootingMethodology a Doctorand Patient Analogy
Rimbo Biworondoko (Tekkim 2000)
Cited from: Book “Distillation Operation” by enry !" #ister
$ar%& 20''
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Why We Need It?
In almost any troubleshooting assignment, it is desirable to
solve problem as rapidly as possible with the least amount ofexpenditure.
In a surprisingly number of cases, this objective is only partiallyachieved. One of the major obstacles to achieving this objectiveis a poor strategy for tackling the problem.
In fact, we probably know how to troubleshoot. We just may notbe aware of how we do it systematically.
$et&odolo y wareness #nowled e *O+,R
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Why Doctor Patient Analogy?
The doctor s troubleshooting strategy in treating a patientis well!established and easily understood by most people.
"pplying similar principles to solve technical problem canoften map out the most e#ective and least expensivecourse of action.
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Step 1: Asses the safety or en iron!ental
ha"ard that the proble! can createIf ha$ard exist, an emergency action is re%uired prior to anytroubleshooting e#orts.
&xample' choke()owline leakage, emergency action' shut inthe well.
*edical analogy'+revent the patient s problem from a#ecting others have
priority over investigating the cause of the problem
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Step #: I!ple!ent te!porary strategy for
li ing $ith the proble!+roblem troubleshooting and correction take time."dverse e#ects on safety, environment and plantpro tability must be minimi$ed
&xample' -ompressor shut down, temporary strategy')aring.
*edical analogy'
octor s advice' /0oing to bed1 or just /taking it easy1
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Step %: &btain a clear' factual de(nition of thesy!pto!s
" poor de nition of symptoms is one of the most commontroubleshooting pifalls.&xample'
Operator' /the gas plant operation is unstable becauseof faulty instrumentation12upervisor' /the oil pump is defective. " new pump isre%uired1
*edical analogy'+atient statement' /I feel I am going to die1, /I am feeling abit o#, but I will be O3 soon1 or /I do have sharp headache1
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Step ): *+a!ine the colu!n beha ioryourself
Troubleshooter would miss major portion of the problem ifhe based his investigation entirely on other people sobservations.&xample' 2ite visit to the plant
*edical analogy'irect observation from the doctor
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Step ,: -earn about the e.uip!enthistory
The %uestion, /what are we doing wrong now that we didright before41 is perhaps the most powerful troubleshootingtool available.&ach di#erence can provide a major clue.&xample' evaluate compressor monitoring history
*edical analogy'octor always ask patients about their health histories,
searching for similar clues.
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Step /: Search and scan e ents that occurred
$hen the proble! started-arefully review operating charts, trends, computer and operatorlogs.&stablish event timing in order to di#erentiate an initial problemfrom its conse%uences.Include events that may appear completely unrelated.&xample' 0as reading evaluation
*edical analogy'
octor always ask patients if they did something di#erent aboutthe time when the trouble started, and what happened rst.
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Step 0: -isten to shift operators andsuper isors
&xperienced people can often spot problems, even if theycannot fully explain or de ne them.5istening to them can often provide a vital clue.
*edical analogy'5isten to experienced nurses
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Step : Do not restrict the in estigation to thee.uip!ent
Often, column problems are initiated in upstream e%uipment.
&xample' -ompressor shut down due to high discharge
temperature. The main cause is high temperature gas fromthe well.
*edical analogy'octor fre%uently look for clues by asking patients about
people they have been in contact with or their family healthhistory.
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Step 2: Study the beha ior of the colu!n by
!a3ing s!all' ine+pensi e changes4 These are particularly important for re ning the de nitionof symptoms and they may contain a vital clue.6ecord all observations and collect data.
&xample' reduce compressor speed
*edical analogy'octor asking the patient to take a deep breath or
momentarily stop breathing during medical examination
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Step 15: Ta3e out a good set of reading on
the colu!n and its au+iliaries'including lab analyses*isleading information supplied by instruments, samples andanalyses is a common cause of column malfunction."lways mistrust or suspect instrument or laboratory reading
*ake as many crosschecks as possible to con rm theirvalidity.&xample' -rosscheck data between gas reading and parmreport.
*edical analogy'5aboratory test taken by doctor on the patient
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6eal 7ase 8istory
7oiler tube leak from distillation operations
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Than3s for your attention
Troubleshooter live with trouble, grow with trouble and happy if he meet newtrouble