CHAPTER 6 Topside process equipment - Petroleumstilsynet og... · MAIN MATERIAL SELECTION Topside...
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1 CHAPTER 6 CHAPTER 6 Topside process equipment Topside process equipment
Transcript of CHAPTER 6 Topside process equipment - Petroleumstilsynet og... · MAIN MATERIAL SELECTION Topside...
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CHAPTER 6CHAPTER 6Topside process equipmentTopside process equipment
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REVIEWED DOCUMENTSREVIEWED DOCUMENTSTopside processTopside process
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STEP 0 Define system level to
be analyzed
STEP 1 Collection of information
STEP 2 Today status evaluation
Accepted?
STEP 3
1. Information collection for future operation
2. RISK assessment
STEP 4 Mitigation plan
STEP 5 Implementation
Yes
Yes
No
No
STOP
Yes Repair/
upgrade?
No
Accepted?
Repair/ upgrade?
No
Yes
LIFE EXTENSIONLIFE EXTENSIONPROCESSPROCESS
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MAIN MATERIAL SELECTIONMAIN MATERIAL SELECTIONTopside process Topside process –– NORSOK MNORSOK M--001001
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IMPORTANT INFORMATIONIMPORTANT INFORMATIONStep 1 Step 1 -- Topside processTopside process
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POSSIBLE DEGRADATION MECHANISMSPOSSIBLE DEGRADATION MECHANISMSStep 2 Step 2 -- Topside processTopside process
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STEP 2STEP 2Today statusToday status
STEP 3STEP 3Risk AssessmentRisk Assessment
STEP 0 Define system level to
be analyzed
STEP 1 Collection of information
STEP 2 Today status evaluation
Accepted?
STEP 3
1. Information collection for future operation
2. RISK assessment
STEP 4 Mitigation plan
STEP 5 Implementation
Yes
Yes
No
No
STOP
Yes Repair/
upgrade?
No
Accepted?
Repair/ upgrade?
No
Yes
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STEP 4STEP 4Mitigation Mitigation –– Actual methodsActual methods
Upgraden Repair and/or replacement of components or complete piping
including coating and insulation.
Monitoringn Monitoring process and operation parameters is an important
mitigation action for the process equipment – most important: Pressure and temperature Content of solids (sand) Oxygen and chloride content Fluid composition (inclusive water content)
n For rotating equipment: vibration analysis n Corrosion monitoring n Sand detection and/or erosion monitoring
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STEP 4STEP 4Mitigation Mitigation –– Actual methodsActual methods, cont., cont.
Inspectionn The inspection program for subsea pipelines and flowlines is often
based on a RBI analysis n Visual inspection most frequently usedn Several different NDT techniques are available Maintenancen The output from the LE analysis can also be an update of the
maintenance program.Testingn Pressure testing can be used to verify that the systems fulfill the
defined pressure requirement. Testing is also used to control the functionality of valves (e.g. safety valves).
New barriersn Is an option topside; e.g fire protective coatings
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LACK OF KNOWLEDGELACK OF KNOWLEDGETopside process Topside process –– selected areasselected areas
n Corrosion Under Insulation (CUI)n Fatigue of small bore piping due to vibrationn Systems for estimation of remaining fatigue life of
components under varying loadsn Inspection and monitoring methods for composite
materialsn Effective NDT methodsn Non Invasive Inspection (NII) of pressure vesselsn Effect of field souring (H2S) integrity of materials?n Inspection and monitoring of wear on pumps and
compressorsn Optimisation of maintenance and inspection n More reliable estimation of material degradation through
combining modelling, monitoring and inspection
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LIFE EXTENSION ANALYSISLIFE EXTENSION ANALYSISExampleExample
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LIFE EXTENSION ANALYSISLIFE EXTENSION ANALYSISExampleExample
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LIFE EXTENSION ANALYSISLIFE EXTENSION ANALYSISExampleExample
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LIFE EXTENSION ANALYSISLIFE EXTENSION ANALYSISExampleExample
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LE ANALYSISLE ANALYSISTopside process equipmentTopside process equipment
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LE ANALYSISLE ANALYSISTopside process equipmentTopside process equipment
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LE ANALYSISLE ANALYSISTopside process equipmentTopside process equipment
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LE ANALYSISLE ANALYSISTopside process equipmentTopside process equipment
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LE ANALYSISLE ANALYSISTopside process equipmentTopside process equipment
