METHOD STATEMENT

FOR UNDERGROUND WATER TANK Doc. No. : 130087-MS-C-543Rev. No. : ADate : 2.DEC.2013Page : 1 of 42

UHV PLANT PROJECT

METHOD STATEMENT

For

ERECTION OF STEEL PLATFORMDoc. No. : 130087-MS-C-330Rev. No. : 1Date : 18 March 2015Page : 8 of 57

UHV PLANT PROJECT

METHOD STATEMENT FOR

ERECTION OF STEEL PLATFORM (CHRISTIANI & NIELSEN (THAI) PCL.) (Doc. No. : 130087-MS-C-330)Contract No.

: 130087Project Title

: UHV Plant Project

Location

:Rayong in Thailand

Owner

:IRPC Public Company Limited

Contractor

: Consortium of GS E&C and SK E&C

A26 May 2015For Review / CommentCNTT.K. JeongS.S. SukB.S. LeeK.S. Song

REVDATEDESCRIPTIONPRPDCHKDREVD(QC)REVD(HSE)APPD(SM)

NOTES:

a)Revision bar (vertical line) would be placed in the left or right hand margin to indicate where the change has been made.

b)PRPD = Prepared by, CHKD = Checked by, REVD = Reviewed by, APPD = Approved by

c)In case of conflict between any requirements stipulated in this document with the contractual requirements, the contractual requirements shall prevail.TABLE OF CONTENTS

1.0 SCOPE2.0 REFERENCES3.0 RESPONSIBILITIES4.0 MANPOWER & EQUIPMENTS5.0 WORKING PROCEDURE6.0 HSC PLAN7.0 INSPECTION PROCEDURE8.0 ATTACHMENT #1: JSA

#2: Catalog1.0 SCOPEThis document describes the detailed method of Erection of Steel Platform to be installed at 78T002 API Pond in IRPC UHV Project to ensure that the work is done in line with HSE and good engineering practices and is compliance with project specification engineering standard practices, nation & local codes. The details of the procedures may be modified base upon actual site requirement2.0 REFERENCESUHV- SP- C - 001 Specification for Civil engineering.UHV- SP- C - 009 Earth work specification.Following shall be support this method

Mandatory Thailand Codes and Standards, Local Government Standards.

3.0 RESPONSIBILITIES3.1 Project Engineer

3.1.1 Assisting site manager to prepare construction plan and performing construction works.

3.1.2 Supervising the execution of civil construction activities to meet the safety and quality requirement of the contract and project specification.

3.1.3 Preparation and mobilization of construction facilities and construction equipment / tools for civil construction works.

3.1.4 Planning and assignment to manpower for civil construction works.

3.1.5 Supervising Civil Construction Engineers.

3.2 Site Engineer

3.2.1 Monitors the daily operations involved with work planned safety, quality and progress control for the civil construction works as directed by the site Construction Manager and Civil Construction Superintendent.

3.2.2 Assisting to the development of civil construction procedures.

3.2.3 Distribution and control of all civil construction drawings for assigned his charges subcontractors.

3.2.5Supervising construction inspection and test reports to perform during the construction period.3.2.6Providing solutions and suggestions to resolve discrepancy items between engineering drawings and field conditions.

3.2.7To prepare shop drawings and verify quantities of any construction materials modified.

3.3 QA/QC Engineer

3.3.1To perform quality inspection as per inspection and testing plan of civil construction works and summarization / collection of relevant inspection reports.

3.3.2Responsible for inspecting construction equipment / tools of civil construction works for proper working order and calibration.

3.3.3Verification of all inspection / test reports and measurement records.

3.3.4Supervision and identification of all construction equipment / tools / products during construction period.3.4 Safety officer 3.4.1 Have full familiarity with the Works at all stages to enable advice to be given, where necessary, to ensure safe work condition and the subsequent prevention of injury to personnel.

3.4.2 Supervise the training in and correct use of protective clothing and safety equipment.

3.4.3 Advise management on changes in legislation.

3.4.4 Investigate accidents and dangerous occurrences and recommend means of preventing repetition.

3.4.5 Carry out frequent site inspections to determine that all Notifications are being observed.

3.4.6 Check that Welfare facilities are properly provided and maintained.

3.4.7 Ensure that all reports of accidents are made on the prescribed forms and forwarded to Head Office without delay.

3.4.8 Advise on and assist in the training of employees to promote and maintain awareness of injury prevention.3.4.9 Maintain close liaison with the Safety Manager4.0 MANPOWER & EQUIPMENTSThe method statement also includes all necessary temporary and permanence work including machinery and manpower. Details is as follows:Engineer

2Welder

3Crane (25 and 50 ton)

2Electrician

2

General Labour

15 Protective clothing

Protective overalls

Good quality gloves, goggles and face mask.Preparation equipment

Ventilator fan

5.0 WORKING PROCEDURE5.1 Description The erection of the steel platform should be in accordance with the project specification/drawings, and as agreed with client. The priority should be given to minimize on-site construction and to provide extensive prefabrication. Other site constraints such as accessibility and limitations of hoisting equipment need to be considered. These constraints may subsequently affect the sequence of construction for the development. The extent of work, the cleaning requirements, the surface preparation and environmental protection requirements shall be as specified in the Contract Documents. Access to facilities and supply of equipment for inspection to all portions of the work shall be supplied, properly installed, and operated by the Contractor.5.2 Fabrication stage

During fabrication it is ensured that strength of members by using grades of steel which are in accordance with the relevant standards and shop drawings comply with structural design drawings. It always important to avoid Fabrication errors (angles, etc).

5.3 Transportation stage

Fabricated members are delivered to the site in a timely and efficient manner to work as per the work schedule.5.3 Erection stage

Prior to the electing the steel members it is inspected by the engineer in charge that the ground surface or supporting structure is suitable for plant (such as mobile scaffolds and cranes) to operate safely, cast in concrete footing pedestals or slabs are within tolerance, availability of shop drawings, preferred type and number of cranes to erect members of particular size and shape, and for vertical and horizontal bracing requirements preferred method of connecting steel members.

5.3.1 Base Plate Installation:

The base plates of required thickness on specified number of bolts are installed at the marked positions on the drawing.

5.3.2 Temporary formwork/bracing:

Temporary bracing are required to ensure the verticality of steel column and for proper connection with the beam and other members.5.3.3 Erection of steel column and beams:

Prefabricated steel columns are positioned at their specified locations and are braced with diagonal and horizontal members. Main beams are connected to column with help of connectors (bolt/ weld as specified).

5.3.4 Grating Installation:

The grating as specified in the drawing is installed after finalizing the erections of column, beams and other members.

5.3.5 Connections:

Connection of the pre-fabricated steel members requires accurate dimension coordination. Slight discrepancy exists in the off-site or on-site works may therefore result to delay in the whole operation. Connections for structural steel sections are as classified into shop drawings, Connections are done mainly by welding during fabrication to produce more rigid joints while by rivet or bolt joints are used more frequently in conjunction with site welding at site.

6.0 HSC PLANOne of the main aspects of this procedure is safety & health control. This is to control occurrence of injuries as well as damage to equipment and properties during the entire construction period. In order to ensure a safe working environment during the entire construction work is obtained, the safety measures will be implemented as follows.

1. Barricades / signs will be provided sufficiently and maintained, as precautionary measures during the entire stage of construction, to protect the work, workmen and safety of the public. In case of precaution against failure of lights, Barricades will be equipped with suitable reflecting material. Barricade will be made to indicate the construction boundary.

2. Prior to using any machines / equipment at site, ensure that they will be inspected and certified by qualified person.

3. Periodic preventive maintenance will be made on all equipment and machines.

4. Operators are to be equipped with valid drivers / operators license or permit from concerned government agency. 5. Only authorized drivers or operators will be allowed to operate machines or equipment.

6. Bank man or rigger will be assigned together with the operator.7. Places great emphasis on all matters of health, safety, and environmental both in the workplace and to the public during the execution of their works.

All workers must be fully equipped Personal protective equipment will be issued to all workers such as safety shoes, hardhat, dust-mask, gloves, and safety glass. All workers must be fully equipped full body safety harness and hook up when work at high.8. Regularly check that safe working condition is obtained prior to working.7.0 INSPECTION PROCEDURE7.1 Contractor shall notify in writing by using FIN to the O/C for inspection

7.2 Subcontractor shall request the daily inspection 24 hours before it starts work.7.3 Maintain close liaison with the Safety Manager.8.0 ATTACHMENT #1 JSA #2 Catalog