SCHEME OF EXAMINATION
A. EQUIPMENT DATA B. REVISION HISTORY
Equipment No. D2111 Date Issue Rev Description Prepare Sign Reviewed Sign
Description Sulfur Decanters
Mfr. Serial No. WHA12-231-2-2 Feb-17 1 0 Initial Izzati Shahrul
Func. Location AMKT-T237-D2111 DOSH Reg. No. TG PMT 6824 x YES 7-May-17 2 1 Remove Ext DPT Izzati Shahrul
Painting
Unit 2100 CF Expiry 18-Aug-21 NO 1-Nov-17 3 2 Add inspection history Ameer Shahrul
Section Decanting Statutory Inspection x YES NO 1-Jan-20 TA 21 3 Add inspection history ZZ NS/SK
Drawing P&ID 237 Equipment Type Vessel Packed Vessel
Ref. No G.A. WXCV2726-DWG-G Orientation Horizontal YES
Design Code ASME VIII Div. I Accessibility Intrusive Entry x NO C. RBI SUMMARY Analysis Date: 3/14/2011
Size (mm) 1472 ID 4825.5 L Extend Full Jacketed Corrosion Loop Remnant Highest
No Component CL Description Risk Rating
No. of Tube N/A Insulation Category Hot x YES (CL) Life (Yrs) Risk Rating
Bundle Type N/A Material HC NO 1 Internal Vessel 2 Sulfidation 20 1E
Shell Side Jacket Pressure Relief Device 2 Jacket 7 Hot Water in SS 20 1D
1E
Process Medium Liquid sulfur Steam Tag No.
Medium High
Pressure Design (min/max) 16/FV 6/FV Set Pres. (min/max), barg
(barg) Operating (min/max) 12 4 PSV-221103A/B
1
Temp. Design (min/max) 200 180 16 (Shell) No Damage Mechanism Component Type DM Overall Summary
(oC) Operating (min/max) 132 152 PSV-811019A/B
External chloride stress
2 1 corrosion cracking under Jacket External
Postweld Heat Treatment NO NO 6 (Jacket) insulation
MATERIAL LIST Internal
2 External corrosion External
Thickness (mm) Internal Vessel
Description Material Remarks Cracking and corrosion
Nominal Corr All. Finish
3 Internal thinning Jacket Internal
Internal shell SA 240 Gr. 316L 22 0
Internal head SA 240 Gr. 316L 22 0 Internal
4 Sulphidation Internal
Jacket SA 240 Gr. 316L 12 0 Vessel
D. INSPECTION REQUIREMENT (Tick if required)
VISUAL Profile RT
ONSTREAM
UTTM IR
EXTERNAL UTFD PAUT
MPT C-Scan
DPT EMAT
100% coverage on shell, head, nozzle, support leg, painting
VISUAL x PMI
condition and other external parts
UTTM x As per baseline UT points (17 Points) PAUT
UTFD C-Scan
EXTERNAL TOFD PEC
MPT RT
Jacket to shell flange, jacket to head flange and jacket to manhole
DPT x HARDNESS
nozzle flange.
IR Others
Monitor severity of erosion formation in blind flange wall. Look for
VISUAL x any indication of internal thinning in internal shell, head, weldment CREEP/PI-TAPE
SHUTDOWN
and nozzle wall.
UTTM BOROSCOPE
UTFD VIDEOSCOPE
DPT REPLICA TEST
MPT LOTIS/H-SCAN
INTERNAL Profile RT FTIS
RFET Others
IRIS HYDRO TEST (barg) PNEUMATIC TEST (barg)
ECT SHELL SHELL
MFL TUBE TUBE
HARDNESS
HOLIDAY TEST VACUUM BOX TEST (barg)
E. PREVIOUS FINDING
Year Finding Location Remark Year Finding Location Remark
2016 2016 No abnormalities
No abnormalities
2018 2018 Arc strike Shell 3 o'clock Monitored
External
Internal
F. DISMANTLING (Tick if required)
Open / Refit Insp. Window Open Trays Manways
Remove / Refit Insulation x At manhole (1M) Remove Packing
Open Manhole x Open manhole (1M) Drop Exch Cover / Channel H
EXTERNAL Open Nozzle x Open nozzle 2N (for drain) INTERNAL Pull Tube Bundle
Remove AFC Plugs Open Demisters / Filters
Others Others
G. CLEANING (Tick if required)
Handtool Handtool x Chipping
Powertool Powertool
Grit Blasting Grit Blasting
EXTERNAL Degreasing INTERNAL Hydrojet
Others Air Blow
Chemical Cleaning
Not Applicable Others x Nitrogen Purging
H. ACCESS REQUIREMENT (Tick if required)
Scaffolding x To access to manhole & nameplate (1 set Scaffolding) Scaffolding
Ladder Ladder
Abseiling Abseiling
EXTERNAL INTERNAL
Gondola Gondola
Air Diving Air Diving
Others Others
I. OTHER REQUIREMENT (Tick if required)
Touch up Painting Passivation
Power Supply Power Supply x For lighting & ventilation
Others Ventilation x For internal entry
EXTERNAL INTERNAL
Lighting x For internal entry
Safe Entry Test x For internal entry
Others
J. REMARKS
External Year Finding
E. PREVIOUS FINDING
Location Remark
E. PREVIOUS FINDING
Internal Year Finding
Location Remark
