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PROJECT EXECUTION PLAN

Q06024-IDCP-PLN-GT-001-REV A





C.A.T. INTERNATIONAL QATAR W.L.L.

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Q06024-IDCP-PLN-GT-001-REV A



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INDEX  PAGE 
Preface scope of works   
1. Execution statement 3
2. Interpretations and Abbreviations 3
3. Project Execution Plan 3

3.1 C.A.T. Approach Plan 3
3.2 Long Lead Items Procurement 5
3.3 Bulk Material Procurement 9
3.4 Construction Activities 9

3.4.1. Temporary Facilities 9
3.4.2. Organization Chart 10
3.4.3. Subcontractors 10
3.4.4. Field Coordination Procedures 10
3.4.5. Detailed Construction Schedule 10

4. Detailed Construction Schedule 11
4.1. Data Collection 11
4.2. Engineering and Design 11
4.3. Construction of the Cooling Plant 12
4.4. Construction of HEX Buildings and ETS’s 18
4.5. Calibration 18
4.6. Testing and Pre commissioning 19
4.7. Commissioning 19
4.8. Training 19

5. Quality Assurance (QA) 20
6. Health ,Safety and Environment (HSE) 20
Appendix 1 PROJECT CHART
Appendix 2 ORGANIZATION CHART
Appendix 3 LONG LEAD ITEMS LIST
Appendix 4 PROJECT KEY MILESTONES
Appendix 5 TEMPORARY FACILITIES
Appendix 6 LIST OF SUB CONTRACTORS
Appendix 7 CIVIL METHOD STATEMENT LIST
Appendix 8 MECHANICAL METHOD STATEMENT LIST
Appendix 9 E & I METHOD STATEMENT LIST
Appendix 10 DESIGN INTENT REPORT

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Q06024-IDCP-RPT-AR-001-REV 3 3-2 Stanley Consultants

The operational plant is a two floor building; ground with a double height, first and partial
basement.

There are two rows consisting of 12 cooling towers each that sit on top of the operational plant.

The Administration Building is a three floor building; ground, mezzanine and first.

The exterior is concrete structure and blockwork with grooved plaster and paint finish, in addition
to powder coated aluminum louvers at the transformers areas, the Administration Building will
have powder coated aluminum curtain walls and windows to allow natural light to filter into the
building.

Accessibility and Maintenance
Architectural features will reinforce the functional and maintenance requirements of the facility
and will not impede normal operations.

Overhead doors will be positioned and aligned to provide unimpaired movement through
the full width of the door to access aisles. Overhead doors and access aisles will be
provided to permit unobstructed removal and replacement of every major piece of
equipment and their respective subassemblies.

A service elevator rated at 1-ton lifting capacity will provide vertical access between the ground,
mezzanine and first floors of the Administration Building.

The roof of the operational plant will be accessible by three individual stair towers.

Four cranes will be provided at the ground floor of the operational plant to allow handling spare
parts and maintenance of the chillers and pumps.

One crane will be provided at the roof floor of the operational plant to allow handling spare parts
and maintenance of the cooling basin pumps.

Access opening (6000 x 3000 cm) will be provided in the center of the operational plant to handle
equipment from the ground floor to the first and roof floors.

Access hatches will be provided to handle the generators and pumps to the basement.

Refer to Section 9 for more details on maintenance and accessibility.

Containment Requirements
Electrical areas containing oil-filled transformers will be designed with passive containment
provisions as required by the National Electrical Code and Stormwater Pollution Prevention Plan
to prevent the accidental release of oil and to facilitate clean up and removal of spilled oil.

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Q06024-IDCP-RPT-AR-001-REV 3 3-3 Stanley Consultants

Building Interior
The interior of the plant expansion is comprised of the basement, main operating floor, and
mezzanine. The basement houses piping, pumps and water tanks related to the plant operations
and a generator room containing two generators. Chillers and pumps are located on the main
operating floor (ground). The first floor provides RO system as well as space for HVAC and
electrical equipment.

Occupancy
The plant will be occupied 24 hours per day.

The floor, walls, and ceiling of the operational and storage areas are all concrete. The floors have
a transparent sealer. The walls and ceilings are painted for better light.

The lab and control room will have resilient tile. The lab has epoxy resin worktops with integral
sinks.

Life safety features include an automatic sprinkler system and a fire alarm system.

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Q06024-IDCP-RPT-CI-001-REV 3 9-1 Stanley Consultants

Section 9

Maintenance and Accessibility

General
This section of the Design Intent Report includes the narrative description of the maintenance and
accessibility for the Integrated District Cooling Plant (IDCP) at The Pearl, Qatar. Discussions
between the Owner, Qatar Cool, PMC, the Contractor, C.A.T. International (CAT), and the
Design-Build Engineer, Stanley Consultants are detailed in Exhibit A – Project Correspondence.

Compliance Statement
The maintenance and accessibility within the plant will comply with all portions of the Tender
Documents prepared for Qatar Cool and issued by DAR during the tender phase. These
documents include the general requirements, tender specifications, tender drawings, and the
appropriate addendums and tender circulars issued for clarification, except as noted below:

Plant Arrangement: The IDCP will be based upon the plant arrangement from the
Alternate 2 bid proposed by CAT and accepted by Qatar Cool prior to contract award.

Maintenance and Accessibility
Mechanical equipment will be installed for easy maintenance and service access. The design will
allow adequate space to safely and efficiently inspect, maintain, repair, remove and replace
equipment and components. Mechanical and electrical equipment will be installed in such a
manner that it will not require temporary removal of a fixed building component, another piece of
equipment, or unrelated piping, ductwork or electrical raceway so as to remove the equipment
piece in question.

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Q06024-IDCP-RPT-CI-001-REV 3 9-2 Stanley Consultants

A dedicated access aisle is located in the center of the plant to allow for future removal and
replacement of individual chillers. This access aisle allows for clean access for operators to
receive deliveries and carry out normal operations and maintenance functions within the plant.
The access aisle is wide enough to allow sufficient tube pull space for the chillers. This will
provide a means for cleaning and replacing the chiller refrigerant evaporator and refrigerant
condenser tubes.

Four traveling cranes will be included within the plant. These cranes will allow for the removal
of equipment components such as pump motors and chiller compressors. Sufficient clearance has
been provided for the removal of equipment using the traveling cranes without disturbing other
unaffected equipment and piping. Equipment and/or components that are handled by the
traveling cranes will be transported to the center of the plant between Column Rows H and J.
The component in question can then be lowered to a pallet or skid at the floor level. The pallet or
skid can then be moved from this location using a forklift or pallet jack. The forklift or pallet
jack can be maneuvered from this location down the main access aisle between Column Rows 7
and 9 to the main equipment access door at the south end of the plant. The largest anticipated
load expected to be carried by the traveling crane will be the chiller compressors. According to
manufacturer’s data, this equipment is anticipated to weigh 4,000 kg.

A vertical equipment access shaft is provided at the center of the plant. The purpose of this shaft
is to provide a means for installation and removal of equipment to and from the first floor as well
as to the roof level. A traveling crane will be located on the roof deck to provide a means of
servicing the condenser water pumps and cooling tower fan motors. This traveling crane will also
be used to move equipment from the ground floor to the first floor (Electrical Equipment or
R.O. components).

The last major feature for maintenance and accessibility is the access hatch located at grade and
outside of the IDCP. The purpose of this hatch is to provide a means of servicing the emergency
generators, fire pumps, and miscellaneous R.O. pumps located in the basement.

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