Thank Inspection [PDF]

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MONITORING & CHECK FABRICATION & ERECTION STORAGE TANK 1. Inpection Receiving Material from Supplier (Visual, Dimensional, Qty, Mill Certificate & Way Bill) 2. Study & understanding Detail Drawing, Specification, Fabrication Procedure, WPS / PQR & ITP (Inspection & Test Plant) 3. Plat before Cutting, Please Check Dimensional & Identification, Check Bevelling & Check Bending 4. Bending Plate must be Primer Coat before Installation at Fabrication Site Please Check Thickness of Paint DFT as per requirement

Fabrication : 1. Check Fit-up Joint as per Procedure Specification 2. Check Roundness (Dimensional Inside Diameter) as per each Course Tank Diameter Range 0 - 40 feet (0 -12,2 M) 40 - 150 feet (12,2 - 45,75 M) 150 - 250 feet (45,75 - 76,25 M) 250   lebih feet (>76,25 M)

From 0º - 180º From 45º - 225º From 90º - 270º

Cone Roof (any Flate Roof & Dome Roof)

From 135º - 315º

Radius Toleransi ± ½ inch (12,25 MM) ± ¾ inch (18,38 MM) ± 1 inch (25,4 MM) ± 1¼  inch (31.75MM)

Long Seam Weld (Butt Weld)

Circum Weld

3. Check Circumference of a circle ( OD x Pi) 4. Check Levelness (Vertical & Horizontal)

T. Joint

Shell

5. Check Peaking (Make Mall of wood)

Bottom Plate

any Flate Bottom & Slope Bottom Fillet Weld

915 mm

Welding position

max 13 mm

R of Tank

915 mm

0O 315O

6. Check Bending 45O

270O

915mm

Welding position

90O

max 13 mm

135O

225O 180O

7. Check Plumbness (Verticality) All Corner above : 0º, 45º, 90º, 135º, 180º, 225º, 270º, 315º. Tolerancy per 1000 mm / 1 mm A Shell Plate Plumb bob

H B

Bottom Plate

5. Check Visual Welding 6. Check NDE Report such as PT & RT Please Check Specification requirement for Tank above

Erection Work : 1. Check Foundation Elevation Slope of Concrete & Asphalt Concrete Foundation

Asphalt

Elevation

0O 315O

45O Check Elevation (Typical)

270O

90O

135O

225O 180O

2. Check Foundation Orientation of Centerline Concrete 3. Please ensure that Foundation already handover from civil to mechanical and already check all together if all OKE check so :

4. Installation Base Plate Cocrete Asphalt Base Plate annuler type

Vacuum Test of Base Plate (to knowlegde Leakage of baseplate)

Shell Vacuum Gauge Vacuum Box Welding Joint to be tested

Glass

FROM COMPRESSOR

OUT

mm mm Check Distance edge from Bottom Asphalt or Baseplate as per drawing

Inspection of Baseplate : Check Orientation Check Dimensional Check Fit-up Joint & Bevel Check Visual Welding Penentrant Test Joint Welding of baseplate (to knowledge weld defects)

4. Installation as per 2 shell till finish

0O 315O

45O

270O

90O

135O

225O 180O

a. Check Fit-up Joint as per Procedure Specification b. Check Roundness (Dimensional Inside Diameter) as per 2 shell Tank after finish From 0º - 180º From 45º - 225º From 90º - 270º From 135º - 315º

3. Check Circumference of a circle ( OD x Pi) 4. Check Levelness (Vertical & Horizontal) 5. Check Peaking (Make Mall of wood)

R of Tank

915 mm

Welding position

6. Check Bending

max 13 mm

915 mm

Diameter Range 0 - 40 feet (0 -12,2 M) 40 - 150 feet (12,2 - 45,75 M) 150 - 250 feet (45,75 - 76,25 M) 250   lebih feet (>76,25 M)

Radius Toleransi ± ½ inch (12,25 MM) ± ¾ inch (18,38 MM) ± 1 inch (25,4 MM) ± 1¼  inch (31.75MM)

915mm

Welding position

max 13 mm

7. Check Plumbness (Verticality) All Corner above : 0º, 45º, 90º, 135º, 180º, 225º, 270º, 315º. Tolerancy per 1000 mm / 1 mm

0O 315O

45O

A Shell Plate Plumb bob

H B

270O

90O

Bottom Plate

135O

225O

5. Check Visual after Welding

180O

6. Check Penetrant Test or Kerosin Test between Shall with Bottom Plate Please Check Specification requirement for Tank above

Kerosin Test POWDER (CHALK) DIESEL FUEL

7. Check Radiographic Test at Longseam Weld & Circum weld as per Specification Please Check Specification requirement for Tank above

On Tank must be marking Joint No. & Welder Stamp. On film RT must be marking : Project Name J.TC.01 W.031

J.TC.02 W.013

J.TC.03 W.022

J.LS.02 W.016

Drawing No. Date

J.LS.01 W.011

Join No. Welder Stamp Code & Standard

4. Installation Nozzle & Manhole Reinforcing Plate 0O 315O

45O

270O

90O

45º

135O 225

O

180O

Formula Check of Dimensional Nozzle :

Check Circumference of a circle ( OD x Pi) Inspection of Nozzle & Manhole Check Orientation Nozzle

Angle fo Circle X Circumference of a circle = 360º

Check Dimensional & Elevation Nozzle Check Fit-up Check Visual Welding Penentrant Test Joint Welding of nozzle (to knowledge weld defects)

Example : OD of Tank : 10300 mm x 3.14 = 32.358 mm 45º 360º

X 32.358 = 4.044.7 mm

Pneumatic Test of Reinforcing Pad Test of Base Plate (to knowlegde Leakage of baseplate) Pressure Gauge

Reinforcement Plate Shell Plate

NOZZLE

FROM Compressor

4. Installation Roof (Cone Roof, Floating Roof, Lifter Roof, Plain Breather Roof, Dome Roof, Flate Roof

or Vapour Dome Roof)

Ventilation

Inspection of Nozzle & Manhole

FROM MPRESSOR

47 mm H2O

Check Orientation Nozzle Check Dimensional & Elevation Nozzle Check Fit-up Check Visual Welding Penentrant Test Joint Welding of nozzle (to knowledge weld defects) Vacuum Test Hydrostatic Test or Internal Air Pressure

FROM COMPRESS

4. Others Test Water filling to Knowledge Settlement & Leakage Methode : Filling the water 25% hold & check elevation Filling the water 50% hold & check elevation Filling the water 75% hold & check elevation Filling the water 100% hold & check elevation & Leakage

If Oil Tank for Bussines must be TERA (Calibration) by Government BY

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