Pressure Vessel Chart

PRESSURE VESSEL INSPECTION STAGES

SL NO.

INSPECTION STAGES

PERCENTAGE

1

PIM

2

2

DOCUMENTS APPROVAL

5

3

INWARD INSPECTION

10

4

DISHEND FORMING INSPECTION

5

4.1 4.2 4.3 4.4 4.5

Fitup Inspection of Blank Plates (if Welding applicable) Forming Monitoring Visual & Dimensional Inspection NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) Mechanical Testing (If appicable)

1 1 1 1 1

5

SHELL ( LONG & CIRCULAR SEAM)

10

5.1 5.2 5.3 5.4

Fitup Inspection of Shell Long Seam/ Circ.Seam Welding Monitoring Visual & Dimensional inspection NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) NOZZLE PREPARATION

2 2 3 3

Fitup inspection Nozzle Long Seam & Circ Seam (if applicable) Monitoring of Nozzle Weding (Long Seam & Circ. Seam) NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) NOZZLE INSTALLATION

1 2 2

Nozzle opening Inspection NDT for Nozzle openings Fitup inspection of Nozzle to shell/Dish Monitoring of Nozzle Weding to shell/Dish Visual & Dimensional inspection NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) Pneumatic Test for RF Pads ( If Applicable) DISHEND TO SHELL INSTALLATION

1 1 1 1 2 1 1

6 6.1 6.2 6.3 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 8 8.1 8.2 8.3 8.4

5

8

6.5 1 1 2.5 2

9

Fitup inspection Dishend to shell Monitoring of Welding activities Visual & Dimensional inspection NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) INTERNALS INSTALLATION

9.1 9.2 9.3 9.4

Fitup inspection of internals Monitoring of Welding activities Visual & Dimensional inspection NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification )

0.5 0.5 1 1

10

PWHT (IF APPLICABLE)

4

10.1 10.2

Verifying the Thermocouples as per Approved Procedure Monitoring the Heat treatment process as per approved Procedure

1 1.5

3

10.3

Review of PWHT Chart

1.5

11

NDT AFTER PWHT

5

11.1

NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) FINAL VISUAL & DIMENSIONAL INSPECTION

11

12 12.1 12.2

5

Verification of overall vessel Visual & Dimensional inspection Review of all inspection stages reports in order to proceed for Pressure Test PRESSURE TEST ( HYDROSTATIC TEST / PNEUMATIC TEST)

6 5 0.5 3 0.5 1 1

14

Monitoring the preparation process for pressure test Witnessing the pressure test as per code & Client Requirements Monitoring the Draining / Cleaning Process after Pressure Test NDT Witness/Monitor/Review(As per Standards Requirement & Client Specification ) Review of Pressure Test Reports PAINTING

14.1 14.2 14.3 14.4 14.5 14.6

Surface Preparation & Blasting Inspection Salt contamination Check,Surface profile & Dust Grade check After Checking Dew point , Humidity & Climate conditions releasing for further process Monitoring of Intermediate Painting Stages ( DFT Checks) Final Visual & Painting DFT Checks Review of Painting Reports

1 1 1.5 1.5 3 2

15

PRESERVATION AND PACKING INSPECTION

4.5

15.1 15.2 15.3

Verifying the cleanliness of Vessel from inside Releasing for Preservation Carrying out Packing Inspection of Vessel

1 1 2.5

13 13.1 13.2 13.3 13.4 13.5

6

10

16

RELEASE

5

16.1 16.2

Verifying the Complete Documents including COC from Vendor ISSUE OF IRN & IRC TOTAL PERCENTAGE

2.5 2.5 100