Troubleshooting Metodhology Rev.1

8/18/2019 Troubleshooting Metodhology Rev.1

1/15

TroubleshootingMethodology a Doctorand Patient Analogy

Rimbo Biworondoko (Tekkim 2000)

Cited from: Book “Distillation Operation” by enry !" #ister

$ar%& 20''


2/15

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


3/15

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.


4/15

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


5/15

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


6/15

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


7/15

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


8/15

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.


9/15

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.


10/15

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


11/15

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.


12/15

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


13/15

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


14/15

6eal 7ase 8istory

7oiler tube leak from distillation operations


15/15

Than3s for your attention

Troubleshooter live with trouble, grow with trouble and happy if he meet newtrouble

Documents

Troubleshooting Metodhology Rev.1