Wmst for Shop Fabrication of Tank

PROJECT TITLE:

JURASSIC PRODUCTION FACILITIES (JPF) AT WEST RAUDHATAIN, NORTH KUWAIT KOC CONTRACT NO: 16052988 VENDOR JOB NO: KOC JPF/ AYEC/ 2016 VENDOR DOC NO: AYEC JPF MEC-MS 026

DOC NO: JPF3-02-MS-0175

DOCUMENT TITLE:

WORK METHOD STATEMENT FOR SHOP FABRICATION OF TANKS

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16-01-2017

DATE

ISSUED FOR APPROVAL

DESCRIPTION

PREPARED BY AL-YOUSIFI

CHECKED BY SPETCO

APPROVED BY SPETCO CM

PROJECT TITLE:

JURASSIC PRODUCTION FACILITIES (JPF) AT WEST RAUDHATAIN, NORTH KUWAIT KOC CONTRACT NO.

16052988

DOCUMENT TITLE:



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VENDOR JOB NO:KOC JPF/ AYEC/ 2016

TABLE OF CONTENTS

1.0 PURPOSE .............................................................. .............................................................................................................................. ...................................................................................... ...................... 3 2.0 SCOPE……………………………………………………………………………………………………………….3 3.0 DEFINITION…………………………………………………………………………………………………...…….3 4.0 REFERENCE……………………………………………………………………………………………………..…3 5.0 RESPONSIBILITIES

………………………………………………………………………………………….……3

6.0 RESOURCE …………………………………………………………………………………………………… .……3 8.0 IDENTIFICATION……………………………………………………………………………………………….…..4 9.0 FABRICATION WORK ................................................................................................................................ ................................................................................................................................ 4

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1. Purpose The purpose of this procedure is to provide guidelines & sequence of activities to be carried out during Construction of storage tanks.

2. Scope This procedure is applicable for fabrication, erection, welding & testing of storage t anks.

3. Definition

a. b. c. d. e.

R F Pad - Reinforcement Pad. PWG – Primary Wind Guider TPI – Third Party Inspection I nspection.. MPI – Magnetic Particle Inspection. LPT- Liquid Penetrant Test.

4. Reference

a. b. c. d. 5.

API 650 Latest edition. Approved Data Sheet, Approved Drawings Quality Assurance Plan

Responsibilities The responsibility of implementation of this procedure rest with Workshop Engineer & QA In-charge

6. Resource; 6.1. Manpower - As per Requirement.

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7. Identification Each plates, flange, fittings etc shall be clearly identified by marking heat no. on the part (e.g.: A 36/ A 573 Gr. 70, H.No.-XXX) using low stress punching. Each weld joint shall be marked with joint Number with Welder Number.

8. Fabrication work All fabrication work involving involving material identification, marking, cutting, cutting, rolling and welding shall be done in accordance with this job procedure, API 650 (Latest edition), Spec and tender documents. The workmanship shall be good in every respect meeting all safety, QC & NDT requirements, with the coordination. Lay all the plates, structural & pipes in such a way prior to fabrication to facilitate proper checking of dimensions & heat no. Mark the components as per the drawings. After material receiving receiving material inspection inspection shall be done & material material traceability shall shall be done by colour coding. During fabrication all NDT procedure shall be follow. 8.1 Bottom plate Fabrication:arrangement , detail drawings a. Read carefully the tolerance and detail of the general arrangement, and API 650 and project specification requirements. requirements. b. Prepared a leveled compacted area to the extent possible, which can be used as a shop floor. c. Place plates properly so that the plates lie in level condition. d. Mark part no. heat no. tank no. in annular plate, bottom plate from development drawing for easy identification at any point of time. with the help of e. Punch mark dimensions of the individuals plate as per drawing with measuring tape. f. Crosscheck the diagonals, longitudinal, and transverse measuring by the measuring tape as per project specification requirements. Inspection to be done before cutting of plate. square cutting and bevel bevel cutting. cutting. g. Gas cut the plate for square burrs & slag. slag. h. Grind the cut edges smooth to remove burrs i. Backing – strip shall be fitted and tacked with annular plate as per drawing. Inspection to be done before cutting of plate diagonal, longitudinal and transverse) transverse ) after cutting and j. Check the dimension (i.e. diagonal, record in logbook.

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8.2 Shell plate Fabrication:a. Read carefully the tolerance and detail of the general arrangement, arrangement , detail drawings and API 650 and project specification requirements. requirements. b. Prepared a leveled compacted area to the extent possible, which can be used as a shop floor. c. Place plates plates properly properly so that that the plates plates lie in level level condition. condition. d. Mark plate no. heat no. tank no. and part no. in shell plate from development drawing for easy identification at any point of time. e. Punch mark dimensions of of the individuals plate as per drawing with the help of measuring tape. f. Crosscheck the diagonals, longitudinal, and transverse transvers e measuring by the measuring tape as per project specification requirements. requirements. Inspection to be done before cutting of plate g. Gas cut the plate for square cutting cutting and bevel bevel cutting. cutting. h. Grind the cut edges smooth to remove burrs burrs & slag. slag. i. Check the dimension (i.e. diagonal, diagonal, longitudinal longitudinal and transverse) transverse) after cutting cutting and record in shell stripping log. j. Welders preparation preparation to be completed completed prior. k. Transfer the plate plate to rolling rolling machine site for rolling rolling of shell shell plate. Inspection Inspection shall shall be done before loadings of plate. l. Complete the rolling in multiphase even for a large radius of curvature. Pre punching shall be done before rolling of plates.

8.3 Gauge Ladders & Platforms:a. All the structural items items shall be straightened straightened before before marking and and cutting. All holes to be drilled & burrs to be removed. Gas cutting not allowed. b. Mark the components as per drawing. c. All the cutting operation, operation, as as per requirement requirement shall be carried out as per per the drawing. drawing. d. Cutting operation shall be carried out by gas cutting cutting method. method. e. Grind the cut edges smooth to remove burrs burrs & slag. slag. f.

After fabrication fabrication all these structural items shall be galvanize galvanize..

8.4 Appurtenances Fabrication:a. All identification, identification, traceability, traceability, fit-up, NDE, NDE, Etc. shall be witnessed witnessed points. Mark Mark the components as per drawing. b. All the cutting operation, operation, as as per requirement requirement shall be carried out as per the drawing. c. All the cutting operation shall be carried carried out by gas gas cutting cutting method. method. d. Grind the cut edges edges smooth to remove burrs & slag. Sheet 5 of 6

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e. Flanges face to be covered covered with a suitable cover cover to protect protect from damage damage during handling, fabrication and transportation. f. The entire shell nozzle, nozzle, roof roof appurtenance, appurtenance, i.e. flanges, flanges flanges to pipe joint joint and other requirements etc. Shall be fabricated as per approved drawings. g. The N.D.T requirements requirements as per code specification. specification. h. Ovality of the tank will will be corrected corrected by using using turn buckles. buckles. i. All nozzles vertically is checked by using plumb. 8.5 Shop welding a. Check the drawing drawing for shop assembly assembly and shop shop welding welding of tank components. components. b. Before doing the circular seam welding of tank, turn buckets are provided in the inside of the tank. c. NDT of long seam & circular seam is done as per the requirement. d. All nozzles butt joint welding NDT is done as per requirement. 8.6 Final Inspection. All the dimensions dimensions & nozzles nozzles verticality are checked checked by our quality quality & then offered offered for Client/TPA inspection. inspection. 8.7 Hydro test: The tanks which are cleared in final inspection are shifted outside the shop floor f or hydro test. The tank is tested to the required pressure & then offered for inspection. Once the inspection is cleared the tank is shifted for blasting & painting after draining of water. 8.8 Blasting & Painting : Blasting & painting is done as per the specification requirement & offered for inspection. Once the inspection is cleared, the tank is made ready for dispatch. 8.9 Dispatch: The dispatch of the tanks is done to site based on the clearance from the Client along with the required documents.

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Wmst for Shop Fabrication of Tank

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