itp tank

LARSEN & TOUBRO LIMITED MSQ UPGRADATION (EPCC-1) PROJECT IOCL - PANIPAT

PMC

INSPECTION AND TEST PLAN FOR TANK PROJECT OWNER PMC CONTRACTOR

Doc. No: LT/MSQ/ITP/STR/ST/004 Date: 20.09.07

: EPCC-1 –MSQ UPGRADATION : INDIAN OIL CORPORATION LTD.PANIPAT. : JACOBS ENGINEERING INDIA PRIVATE LIMITED : LARSEN & TOUBRO LIMITED

LEGEND :

NA : Not Applicable, HP : Hold Point, W : Witness Point, Rw : Review of SUBCONTRACTOR / L&T's documentation, S : Surveillance by OWNER / PMC, WC : 100% Examination, Spec. : Specification, Dwg. : Drawing, Std. : Standard PT : Penetarnt Testing, MT: Magnetic Particle Testing, PWHT: Post Weld Heat Treatment, IRN: Inspection Release Note

SL. No.

INSPECTION WITNESSES/GRADE

FIELD INSPECTION REPORT FORMAT No.

DESCRIPTION OF ACTIVITY

L&T

JACOBS

WC

W

LT/MSQ/IMIR/GEN/001 Rev.01

WC

W

APPROVED VENDER FORMAT

WC

S

WC

HP

REMARKS

STORAGE TANK A

PRIOR TO FABRICATION

1

Acceptance of the tanks foundation

2

Materials

3

Filler Materials tests & Approval

4

WPS / PQR

LT/MSQ/STR/WPS/002 LT/MSQ/STR/PQR/003

5

Welder Performance Qualification

LT/MSQ/STR/WPQ/004

WC

HP

6

Radiography Procedure

LT/MSQ/P/RT/009

WC

S

7

Joint numbering in drawings

APPROVED SKETCHES

WC

S

8

Welding equipment and accessories

WC

S

9

Tools & Tackles

WC

S

10

Backing Ovens a) portable

WC

S

b) heavy

WC

S

11

Jig & Fixtures

WC

S

12

Suitability of plate bending machine

WC

S

B

FABRICATION / ERECTION BOTTOM

1

Plate size, marking & cutting

WC

S

2

Blast cleaning & painting of undemeath bottom plate

WC

S

3

Plate layout, overlap & Fit up

WC

S

4

Sequence of welding to follow

WC

S

5

Size & positioning of backing plate for annular plates

WC

S

6

Baking of electrodes / Interpass cleaning

WC

S

ELECTRODE BACKING REGISTER FIELD INSPECTION REPORT FORMAT No.

DESCRIPTION OF ACTIVITY SL. No.

INSPECTION WITNESSES/GRADE

Signature : Name : Date Prepared by L&T

Checked by L&T

Approved by JACOBS Page 1 of 4

REMARKS


PMC




LEGEND :


LT/MSQ/DPT/016 LT/MSQ/MPT/017 LT/MSQ/PIPE/RGM/013 LT/MSQ/PIPE/RGI/014 LT/MSQ/DPT/016 LT/MSQ/MPT/017

L&T

JACOBS

WC

S

WC

S

WC

S

8

LPI / MPI / Radiography of annular plate butt welds & bottom plate butt welds ( if any )

9

Vacuum / MPI / LPI of shell portion of the bottom plates

10

Vacuum box test for the bottom plate welding

C

SHELL

1

Plate size, marking and cutting

WC

S

2

Plate bending, curvature check, stacking

WC

S

WC

S

WC

S

3 4

Shell course alignments and fit up of vertical and circumferential joints Shell diameter, circularity, perpendicularity, straightedge before welding

5

Visual & Back chip check

WC

S

6

Second side visual

WC

S

7

Location, size & alignment of nozzles and other openings.

WC

S

8

R.F. pads fit up / welding

WC

W

SR CHART

WC

S

LT/MSQ/PIPE/RGM/013

WC

W

WC

S

WC

W

9 10 11

PWHT of RF pad. Nozzles & manhole etc. ( as applicable ) Radiography marking for random radiography only Curb angle and wind girders fit up / welding

LT/MSQ/DPT/016 LT/MSQ/MPT/017

12

MPI / LPI nozzles

13

RF pads air test

WC

S

14

Shell to bottom fit up

WC

W

WC

S

WC

S

15 16

Shell to bottom I/S welding root run visual / oil chalk test Shell to bottom O/S welding visual & LPI for toe cracks

17

Fabrication & erection of stairways

WC

S

18

Cleates welding for insulation

WC

S

19

a) radiography interpretation

WC

S

WC

S

LT/MSQ/PIPE/RGI/014

b) extension marking for repair FIELD INSPECTION REPORT FORMAT No.

DESCRIPTION OF ACTIVITY SL. No.

INSPECTION SWITNESSES/GRADE


Checked by L&T


REMARKS


PMC




LEGEND :

NA : Not Applicable, HP : Hold Point, W : Witness Point, Rw : Review of SUBCONTRACTOR / L&T's documentation, S : Surveillance by OWNER / PMC, WC : 100% Examination, Spec. : Specification, Dwg. : Drawing, Std. : Standard PT : Penetarnt Testing, MT: Magnetic Particle Testing, PWHT: Post Weld Heat Treatment, IRN: Inspection Release Note L&T

JACOBS

FIXED ROOF 1

Location & welding of roof supports

WC

S

2

Alignment & welding of roof structures

WC

W

3

Plate layout, overlap & fit up

WC

S

4

Visual check of roof welds

WC

W

5

Location, size & alignment of roof man-holes & vents

WC

S

6

PWHT ( as applicable )

WC

S

FLOATING ROOF 1

Temporary staging spacing & levels

WC

S

2

Plate size, straightening & cutting

WC

S

3

Plate layout, overlap & fit up / welding

WC

S

4

Buoys fabrications

WC

S

5

Vacuum testing of roof plate welds

WC

S

6

Location of sleeve supports

WC

W

7

Pad plate welding with roof and sleeve support

WC

W

8

Fixing and welding of Buoys

WC

S

9

Initial lift

WC

W

10

Supports fixing through sleeves

WC

S

11

Seal welding of support sleeves from beneath after dewatering

WC

W

12

Air test of buoys

WC

S

13

Pontoon welding

WC

W

14

location, fixing & welding of man holes, drains etc.

WC

S

15

Shell to pontoon clearance

WC

W

W

W

16

Seal fixing

SL. No.

FIELD INSPECTION REPORT FORMAT No.

DESCRIPTION OF ACTIVITY

INSPECTION WITNESSES/GRADE L&T

JACOBS


Checked by L&T


REMARKS


PMC




LEGEND :


C

TESTING

1

Correctness of testing arrangements especially size of blind flanges / vents / drains / temporary piping

WC

S

2

Mechanical / inspection clearance

WC

S

3

Earthing of ladder and shell

WC

W

4

Settlement reading during water filling

WC

W

5

Hammer test

WC

S

6

Air pressure test

WC

S

7

Vacuum test

WC

S

8

Roof collapsibility test in case of floating roof tanks

WC

S

D

PAINTING AND INSULATION

1

Cleaning

WC

S

2

Painting

WC

W

3

Insulation

WC

W

HP

Rw

INSPECTION & TEST DOCUMENTS Review test and inspection documents


Checked by L&T


itp tank

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