Models From NCTC_Construction Execution Plan

40
Agenda of Kick-Off Meeting For Building Subcontractor (Salalah Methanol Project) I . Construction Execution Plan (To be presented by Subcontractor) 1. Construction Strategy & Goal (To meet Schedule, Quality, HSE) 2. Project Organization with Key Personnel Resume 3. Detailed Construction Schedule with S-Curve by Discipline 4. Temporary Facility Plan 1). Site Office 2). Camp 3). Work Shop 4). Others 5. Site Mobilization Plan 1). Manpower Mobilization Plan by Discipline 2). Construction Equipment Mobilization Plan by Discipline

Transcript of Models From NCTC_Construction Execution Plan

Page 1: Models From NCTC_Construction Execution Plan

Agenda of Kick-Off Meeting

For Building Subcontractor(Salalah Methanol Project)

I. Construction Execution Plan (To be presented by Subcontractor)

1. Construction Strategy & Goal (To meet Schedule, Quality, HSE)

2. Project Organization with Key Personnel Resume

3. Detailed Construction Schedule with S-Curve by Discipline

4. Temporary Facility Plan1). Site Office2). Camp3). Work Shop4). Others

5. Site Mobilization Plan1). Manpower Mobilization Plan by Discipline2). Construction Equipment Mobilization Plan by Discipline

6. Subcontracting / Subletting Plan

Page 2: Models From NCTC_Construction Execution Plan

7. Safety & HSE Plan

8. Quality Assurance & Quality Control Plan 1). ITP (Based on GS E&C’s ITP) 2). Third Party Inspection Plan 3). Method Statement( To be issued later)

9. Field Material Control Plan

10. Utility(Water, Power) Sourcing Plan

11. Raw Material (Including Finishing) Supply and Sourcing Plan

12. Work Permit Plan with Registration of Salalah Free Zone Office

13. Turn Over Procedure(To be issued later)

14. Counter Measure Plan against EID holiday, RAMADAM period & MONSON season, etc.

15. Temporary Drainage Plan at Site against Storm Water

Page 3: Models From NCTC_Construction Execution Plan

16. Pre-commissioning and Commissioning Plans

17. Labor Control Plan1). Transportation2). Working Hours and Overtime Control3). Penalty against Idea and Incentive System for Best

Workman4). Catering Recreation5). Identification Control

18. Interface Management Plan with Others

19. Construction Coordination Procedure(Based on GS E&C’s Procedure)

20. Progress Measuring (Suggested by Subcontractor)

21. Scaffolding Plan

22. Steel Structure Erection Plan

Page 4: Models From NCTC_Construction Execution Plan

23. Early Activity Execution Plan

1). Temporary Facility

2). Main & Power Substation

3). Other Substation

II. Others Agenda (To be explained by GS E&C)

1. TPMS application

2. Progress Measurement / Invoicing & Payment

Page 5: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Construction Strategy & Goal

Key Strategies & Goals Zero Incident/Accident Occurrence Avoiding Idle and Unnecessary Time Early Establishment of Infrastructure Best Selection of the Qualified Subcontractors Involvement of Staffs who have Experiences and

Expertise in Middle East Maximization of IT System {TPMS compatible) Complying with Local Laws and Adaptation of

Local Policy

01

Page 6: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Zero Incident / Accident Occurrence Establishing and implementing the HSE Management System as effective, HSE

Management System is of prime importance to the Project. Furthermore, we will comply strictly with GS E&C's Safety & Security

Regulations. We will study and analyze any possibility to cause an accident from the process

set before starting works, and get rid of it Avoiding Idle and Unnecessary Time

We will set each 3 Months Schedule as a term, analyze and study Materials/Workers/Equipments/Preceding processes in each term to avoid Idle Time in advance

Early Establishment of Infrastructure We will do our utmost efforts to prepare the Site as earlier as possible, that, we

believe, is the Key to the successful Project Execution. Temporary facilities and accommodation provisions will be set up at earlier stage.

Page 7: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Best Selection of the Qualified Subcontractors Sub-Contractor, if any, should be examined and pre-qualified by us and

approved by GS E & C.

Involvement of Staffs who have Experience and Expertise We will appoint Staffs who are well experienced and highly qualified for this

Project.

Maximization of IT System {TPMS compatible) We will set an IT System compatible to GS E&C's Total Project Management

System We will be having e-mail facility in site to keep connection between our head

office and GS E&C We will appoint a document controller to handle all incoming & outgoing mails

Page 8: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Complying with Local Laws and Adaptation of Local Policy

Education of our workers;

We will educate our workers to respect the Local Laws and get along with local employees well.

Local P.R.O.'s;

In Oman, it is not allowed for the foreigner to handle Public Relations. So we will post a local P.R.O. in Muscat and the other one in the Site.

Localization/Omartization;

We will employ local workers suitable for the works within the Decrees,

Page 9: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Project Organization Chart02

PROJECT MANAGER

M.SULEMAN

ELE. ENGINEERVERGISH

QUANTITY SURVEYOR

JAWS

HSE ENGINEERSATISH

QA/QC MANAGERB.VINOD

PROJECT ENGINEERS.ASHOK

PLANNNG ENGINEERM.YUNUS

PLUMBING ENGINEER

ALEX

ELE.SUPERVISR

RAGHU

ELE.C.HAND

JOSE JONE

ELE.WORKERS

PLUMBINGSUPERVISR

MANI

PLUMBINGC.HANDKANJI

PLUMBERS

CIVIL SUPERVISR

T.RAJA

FOREMANSHASHI

SKILLED / UNSKILLEDWORKERS

CIVIL SUPERVISRPHILLIPOSE

FOREMANSOMAN

SITE FOREMANSHANKAR

DRAFTSMNBINU

SR.ENGSIHABUDIN M&E ( H.O.)

QA/QC ASSISTANT

STEVEN

DOCUMENTCONTROLR

SINJO

TINSMITHS INSULATOR

WELDERS FITTERS

Page 10: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Detailed Construction Schedule with S-Curve 03

Page 11: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Page 12: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Page 13: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Temporary Facility Plan

1. Site Office and other Facilities

Portable Cabins will be arranged

2. Camp & Catering A local catering service will be assigned

3. Work Shop

Work shop will be setup beside the lay down area

04

Page 14: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Manpower Mobilization Plan 05

Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan

1 Project Manager 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

2 Sr.Engineer ( M & E ) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

3 Electrical Engineer 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

4 Plumbing Engineer 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

5 Planning Engineer 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

6 Project Engineer 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

7 QA/QC Engineer 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

8 Quantity Surveyor 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

9 HSE Engineer 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

10 Electrical Supervisor 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

11 Plumbing Supervisor 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

12 Civil Supervisor 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

13 Draughtsman 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

14 Lab Technician 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

15 Surveyor 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1

16 Foreman 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

17 Charge Hand 2 2 2 2 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

18 Carpenter 8 8 8 10 18 18 20 20 25 25 25 30 35 35 40 25 25 25 25 25 25 25 25 25 25 25 25 20 20

19 Steel Fixer 5 7 7 12 12 15 15 18 18 20 20 20 25 35 35 25 18 18 18 18 18 18 18 18 18 14 10 10 10

20 Mason 3 5 8 8 20 20 20 20 25 25 25 25 30 30 30 30 25 25 25 25 25 25 25 25 25 20 20 20 15

21 Helpers 25 25 40 40 50 50 50 50 50 50 60 60 60 60 60 60 70 70 70 70 70 70 70 70 70 70 60 50 45

22 Scaffolder 4 6 6 6 7 7 7 10 10 10 10 10 10 12 12 12 12 12 12 10 10 10 10 10 10 9 9 9 9

23 Electricians 3 3 3 3 3 3 5 5 5 5 5 7 7 7 7 7 7 8 8 7 7 7 6 6 6 4 4 4 4

24 finishing Carpenter 5 8 8 8 10 10 10 10 12 12 12 12 12 12 14 12 11 11 11 11 11 11 11 11 11 11 11 8 8

25 PRO 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

26 Drivers 5 8 8 10 10 10 15 15 15 18 18 18 18 18 18 18 18 18 18 18 18 15 15 15 15 15 10 10 10

27 Mechanics 3 3 3 5 5 5 5 7 7 7 7 7 7 8 8 8 8 8 8 8 8 8 8 5 5 5 5 4 4

TOTAL 82 94 113 125 162 165 174 182 194 199 209 216 231 244 251 224 221 222 222 219 219 214 213 210 210 198 179 160 150

2007 2008 2009

Page 15: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Manpower Histogram

MANPOWER HISTOGRAM

82

94

113 125

162

165 174 182 194

199 209 216 2

31 2

44 251

224

221

222

222

219

219

214

213

210

210

198

179

160

150

0

50

100

150

200

250

300

Page 16: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Construction Plant & Equipment Mobilization Plan

Sl.No.1 Shovel 12 JCB 23 Excavator 14 Rock Breaker ( if and when required ) 15 Grader 26 Scraper 27 Trench Compactor 28 Roller 19 Water Tanker 310 Steel cutting/Bending Machine 411 Welding Sets 112 Gas Cutting Set 113 Concrete Mixer Machine 314 Jack Hammer 115 Hiab 116 Tipper Truck, 18 m3 217 Tipper Truck, 6 m3 218 Crane 15 Ton ( if and when required ) 219 Generator 2

BUILDING WORKS FOR SALALAH METHANOL PROJECT

List of Plant and equipment

Machinery Quantity

Page 17: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Subcontracting / Subletting Plan

06

Waterproofing : Abou Nabil

Antitermite Treatment : Muna Noor Inc.

Steel Doors : Dosteen

Arab Merchants

Carpentry : NCTC Carpentry Division

Aluminium Doors & Windows : NCTC Aluminium Division

MEP Services : NCTC M & E Division

Page 18: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Safety and HSE Plan

We, National Construction & Trading LLC hereby confirm to comply strictly with GS E&C’s Safety and Security regulations and HSE Management system to execute the work successfully. In order to do so ;

1. We will submit a HSE Management System Plan to GS E&C for the approval within 1 month after the Contract

2. We will dispose Workers with PPE and Safety Training Courses & Job orientation

3. We will execute Morning Exercise, Tool Box meeting, Safety Slogan every morning

4. We will make Safety Petrol at a appropriated interval5. We will put a signboard to show the Safety keeping status 6. We will inspect the Rigging Tools periodically for the Safety purpose to prevent

any Accident7. We will keep our Camp clean always8. We will execute Emergency Shunting Training9. We will make periodic training for the fire and safe driving10. We will give awards to the ones deserve for the Safety, at the same time, give

warnings for the ones who violate the Rules

07

Page 19: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Quality Assurance & Quality Control Plan

We will comply strictly both GS E&C's QA/QC Procedure and our QA/QC Plan to fulfill the needs and to satisfy the Client

- Inspection & Test Plan and QA/QC Procedures reflecting IIP will be provided for the approval from GS E&C before the commencing of the Work.

- All the activities of QA/QC in the Site to be done by the Procedure.- All the Documentations to be done by the QA/QC Procedure &

Document Control Flow Chart.- All the Reports will be provided according to the Procedure Daily,

Weekly, Monthly, according to the Procedure.- Welder Training Center will be provided for keeping Welders high

level of Quality.- Welding Consumables should be kept properly for the quality welding

according to the Procedure- Method Statement will be submitted for the Approval before the job

commencement.

08

Page 20: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Field Material Control Plan

1. We should submit Mill Certificates and etc. for the approval of GS E&C

2. Flow of Field Material Control

1) Planning & Preparation of Material handling & storing

2) Material receiving at site & material unpacking inspection

3) Warehousing or Outdoor storage

4) Handling & disposal of Material

09

Page 21: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Utility (Water, Power) Sourcing Plan

1. Provision of Water for Construction

- Provide a Temporary reservoir tank

- Filling water by water tank lorries

- Excavating, laying down membrane film for waterproofing

2. Provision for Electricity

- By NCTC

10

Page 22: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Raw Material (Including Finishing) Supply & Sourcing PlanThe Contractor shall procure all materials within the scope of the

Contract.Either from local market or overseas market.

The procurement management consists of:

1. Preparation of requisition

2. Floating of enquiry & technical / commercial review of offers

3. Selection of Vendor and Placement of order and

4. Expediting and Site transportation.

The Contractor shall maintain and update a material planning and tracking

sheet and submit it to GS E & C on a monthly basis along with the progress

reports.

The MTS format shall be agreed with GS E & C. The MTS shall provide a direct status of

material procurement with respect to planned and actual dates of execution of activities.

The Contractor shall carryout expediting on all purchase orders placed for the Contract. The

expediting shall either be from the Contractor Home Office at Muscat or at source of manufacturing.

The expediting from home-office shall be through telephonic / facsimile messages. The expediting

status of items shall be reported in the Monthly Progress Reports to the GS E & C.

11

Page 23: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Raw Material (Including Finishing) Supply & Sourcing Plan (Contd…)

The reporting shall also include details of any slippage. The Contractors Inspection, Expediting &

Vendor Data Control Procedure shall be implemented to provide effective control on expediting and

reporting.

The materials shall be inspected upon receipt. The material control documentation at the Contractor’s

Central Stores shall include:

1. Preparation of Stores Receipt Voucher (SRV)

2. Preparation of Site Issue Voucher (SIV)

3. Accounting Documentation.

The materials shall be transported to Site suitably. The material handling instructions shall be complied

with to avoid damage during loading and unloading. The material for construction shall be issued from

the Site Stores. The Store Keeper shall be responsible for management of materials as per Site Stores

procedure.

On completion of project, the surplus materials, if any, shall be returned to the Central Stores vide STN

(Stores Transfer Note) as per Contractors applicable procedure.

Page 24: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Work Permit plan with registration of Salalah Free Zone Office12

Page 25: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Turn Over Procedure ( To be issued later)

To be issued later.

13

Page 26: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Counter Measure Plan against EID holidays, RAMADAN period & Monsoon season, etc.

We already put them in the consideration for the schedule.

14

Year Monsoon Ramadan EID Holidays Remarks2007 Jun - Aug 09/13 – 10/13 10/14 – 10/16 12/20 – 12/22

2008 Jun - Aug 09/02 – 10/02 10/03 – 10/05 12/09 – 12/11

2009 Jun - Aug 08/01 – 09/01 09/02 – 09/04 11/08 – 11/10

Ramadan : Muslim working time 07:00 to 15:00

Monsoon : We will catch up any delay due to weather by working on holidays and

working over time

Page 27: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Temporary Drainage Plan at Site against Storm Water

Will be discussed later

15

Page 28: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Pre-commissioning Plan & assistance Plan of GS’s Commissioning

To be discussed with GS E & C.

16

Page 29: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Labor Control Plan (1/2)

1. Transportation

A bus will be arranged to carry workers from / to site.

2. Working hours & Overtime Control

1) Working Hours

7.00 - Start of work

10.00 – 10.15 - Break time

12.00 – 13.00 - Lunch break

15.30 – 15.45 - Tea break

18.00 - Finish of work

2) Overtime Control

All work will be finished within the regular working time

In special cases, we will work overtime with advance permission GS E&C

17

Page 30: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Labor Control Plan (2/2)

3. We will reward workers for good ideas and for safe workers at the end of the month to keep workers encouraged.

4. We will provide a recreation room for workers to refresh themselves after work time.

5. Identification Control – To be discussed with GS E&C.

17

Page 31: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Interface Management Plan with Others :

To be discussed with GS E&C

18

Page 32: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Construction Coordination Procedure :

GS E & C “ Field Coordination Procedure “

( 7S72 - IT - CN – 001)

19

Page 33: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Progress Measuring ( Suggested by Subcontractor )

- Progress Measuring will be done daily at 9.00 AM

- Every Thursday We will be submitting a weekly report and a three

week look ahead.

- With our monthly progress report we will be submitting a three

months look ahead

- We will submit our Invoice on the 24th of every month

20

Page 34: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Scaffolding PlanScaffolds are used in construction area as temporary work laces to provide support for workmen,

plant and materials used in buildings, construction, maintenance, repair and demolition work, etc.

SCAFFOLDING HAZARD The accidents to workers that are due to fails from a height or to scaffold collapses show

clearly the importance of properly constructed and maintained ladders and scaffolds. Apar from collapses the principal hazards are;

Unsecured ladders slipping Use of unsuitable or faulty materials Inadequately supported scaffold boards Inadequate or irregular platform widths Omission of guard rails or toe beads Failure to secure scaffold to the building or to brace it adequately Overloading the platforms and scaffold, etc.

All steel tubing used for scaffolding shall confirm to BS 1139

Tube to BS 1139 is nominal 1/21’ diameter tube and shall be free of cracks, surface flaws and other

defects.

All tubes should be maintained in a clean condition and regularly inspected.

21

Page 35: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Scaffolding Plan (Contd….)FITTINGS

All fittings, e.g., couples, clamps, etc., used for scaffolding shall conform to BS 1139.

Fittings should be regularly examined. Moving parts should be regularly lubricated for easy movement.

Fig. # 1 Scaffold Fittings 1.1.1.1.1.1.1.1.1

1.1.1.1.1.1.1.1.2

1.1.1.1.1.1.1.1.3

Page 36: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Scaffolding Plan (Contd….) A good base is essential, so the ground or floor on which the scaffolding is going to stand should

be carefully examined. Soil or made up ground will need consolidating.

Sole plates at least 9”X1 1/2”(230mmX 40mm) cross section are required to spread the load on earth, made up ground, asphalted surface etc. Sole plates shall extend under at least two standards and joints shall be positioned so that they fall within one half to one third of the distance between any two adjacent standards. At the end standard the sole plate shall project a similar distanced.

Small timber pads may be used on solid bearing, such as concrete where there is no risk of the standard and base plate sinking or becoming displaced. Any other make shift arrangement e.g. barrels, boxes, loose bricks of concrete blocks shall not be used as a substitute for sole plate for construction of scaffold.

Where materials are to be stacked on a working platform or working place above the height of the toe boards, suitable barriers shall be positioned so as to prevent the fall of such material from the platform or place.

Access to a working platform is best achieved by providing a separate ladder tower or cantilevered access platform so as not to obstruct the platform and to minimize the possibility of persons falling through the gap in the guardrail or decking.

Page 37: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Scaffolding Plan (Contd….)

Scaffolding shall be erected, altered and dismantled by experienced workmen working under the direction of a competent supervisor.

Scaffolding materials and other objects shall not be dropped, thrown tipped or shot from heights.

All scaffolding shall be inspected after completion of erection and then at least every seven days and after weather likely to have affected stability.

Workers shall not work on scaffolds during storms or high winds.

ERECTION The procedure for erection should be such that an unstable condition is not reached at any

time. This recommendation is as important in low scaffolds as in taller ones. The ties for the scaffold are to be erected and should reach each tie position.

No portion of the scaffold should be utilized unless that portion is fully decked, braced and tied. Warning notices shall be fixed to draw attention to those arts of a scaffold, which are incomplete and should not be used.

Page 38: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Scaffolding Plan (Contd….)

DISMANTLING During dismantling, no component, which endangers the stability of the remaining structure,

shall be removed. If dismantling has reached the stage at which a critical member has to be removed, e.g. a tie

or a brace, the stability of the structure shall be assured by fixing a similar of otherwise adequate member in place lower down before the member to be taken out is removed.

Because of the changes, which are made in a scaffold structure during its working life, it is not safe to assume that dismantling can be carried out in the reverse order to the erection. The scaffold, especially its tying and bracing, should be inspected prior to dismantling.

If the scaffold is defective, it should be made good before dismantling commences.

The procedure of dismantling shall be orderly and planned and should proceed generally from the top in horizontal sections.

Scaffolds shall not be dismantled in vertical sections from one end towards the other, especially in cases where a hoist tower, which apparently gives support to the scaffold, is to be left standing, unless special consideration is given to ties and bracing.

Page 39: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Steel Structure Erection Plan

Steel Erection Plan will be submitted after receiving the detail drawings

and after discussion with the Subcontractor.

22

Page 40: Models From NCTC_Construction Execution Plan

Construction Execution Plan (Salalah Methanol Project)

Early Activity Execution Plan

1. Temporary Facility

- Temporary Facilities wiil be completed by 15.11.2007

2. Main & Power Substation

- Main & Power Substation will be completed by 11.09.2008

3. Other Substation

- Other Substations will be completed by 11.09.2008

23