ECC_FREEZER_AND_CHILLER_SOW_.doc

ECC FREEZERS AND CHILLER INSTALLATION

ESKAN VILLAGE

BUILDING #59-510

RIYADH, SAUDI ARABIA

17 JAN 2013

1. GENERAL SCOPE OF WORK. The contractor shall provide all necessary equipment, materials, labor, and transporation to supply and install one new freezer unit and one chiller unit for frozen food storage on Eskan Village, Riyadh, Kingdom of Saudi Arabia. The two units and all associated refrigeration equipment and accessories must fit on an existing concrete hardstand Eskan Village, Riyadh, KSA. The size of the Freezer and Chiller rooms shall be 4.33 X 3.19 x 2.56 M. The current electrical service will be removed and replaced with new equipment on the est side of the facility. The contractor will provide and furnish of pre-fabricated insulated for two cold rooms with clear external dimension as mentioned above, formed essentially of polyurethane foam insulation material cladded and supported with white enameled corrugated surface for greater strength and rigidity galvanazed sheets of 0.5 mm thickness optimum corrosion protection and resistance against all internal and external elements.

Thickness 100mm

Termal conductivity: 0.023 W/m,k= 0.013 Btu/hr.ft.F.

Foam Density: 38-40 Kg/M3

Closed cells: 93%

CFC (Chlorinated flour carbon) free i.e. not pollutional Fire retardant self extinguished.

1.1 The panel accumalation through the made of stainless steel CAM-LOCKS shall ensure total air tightness and ability of replacing. The joint space between each special size tongue and groove extending along the length side must be provided for complete air tightness and water vapor with non-cross linked expanded polyethylene layer sheet and must have as follows; Thikness 1 mm; CFC free and the light flexible and with great resistance against shock..

1.2 Doors: Shall be of polyurethane insulated normal hinghed doors equipped with standard light quality fittings and accessories such as heavy duty lock with internal safety release gasket and heavy duty outer and inner skin of rigid fiber glass pre-painted white polyester.

1.3 Floor: Shall be from the same insulated panels pre-fabricated polyurethane panels 40 to 42 Kg/m3 density reinforced with marine plywood layer of 12 mm to bear both dynamic and static loads.

1.4 MACHINERY: Condensors shall be copper tube and aluminum fins condensor axial fans with grid motors equipped with thermistor protection COPLAND reciprocating Semihermetic single stage compressors thermally protected with internal protection devise. The compressor equipped with servise valves including manifold gauge connection oil sight glass, mounting spring, discharge vibration eliminator and liquid receiver. Evaporators must be made of white enabled galvanazed panels copper tube, profiled aluminum fins coil, equipped with stainless steel low heathing elements inserted in the coil and direct drive axial propeller fan sealed bearings lubricated for life.

1.5 CONTROL PANELS: The contractor must supply and install a weather proof panel boards all electrical safety devices such as: Circuit Breaker, contactors, oerloads, 24 hrs timer replay, pump down control system, indicator lights and push button switches. The contractor shall supply and install the refrigaration piping between the evaporator and the condensing unit, pipping rubber insulation aero flex, high and low dual pressure switch, oil differential pressure switch, solenoid valve, expansion valve, sight glass, filter driver, normal thermostat, scale thermometer, P-trap and suction line vibration absorber.

2. PHASED WORK PLAN. The following phases of work will be conducted, in order. Each phase will be inspected by the USMTM Directorate of Public Works before proceeding to the next phase.

a. Dismantle and remove the old existing freezers and chiller and all associated materials. Materials will be salvage and become property of the contractor to be disposed of in accordance with local laws and regulations. All materials will be removed from Eskan Village at the contractor’s expense.

b. Perform traning, troubleshooting and adjusting of all refrigeration, electrical and service equipment of all two new units.

c. Perform training of government refrigeration technicians in the proper methods of inspections, trouble shooting, cyclic maintenance and preventative maintenance of new freezers refrigeration components and electrical equipment.

d. Cleanup all old equipment, debris and construction materials from the ECC concrete pad and surrounding areas.

m. Hand over all manuals, design specifications, as-built drawings, warranties and other documentation relating to the project to the USMTM Directorate of Public Works.

3. BASIC FREEZER BODY AND CONSTRUCTION. All materials shall be new, meet and comply with the manufacturer’s standards for associated systems, and be well suited for their intended purposes. The freezer walls, ceilings, and floors shall be industry standards for material, thickness, and insulation, and all panel joints and seams shall be properly sealed and airtight. Each unit must have access sliding doors and industry standard for material, thickness, insulation, and equipped with plastic curtains. Doors must be able to accommodate high security locks and to be operated from both inside and outside of each unit with a safety lock release from inside. Each unit must also have access door ramps to accommodate forklift and pallet jack traffic. Forklifts will not enter the units, but must be able to drive on the access ramp to bring pallets to the freezer entrances. Bodies for all units must be able to sustain temperatures as low as –30 degrees centigrade with ambient temperatures of +50 degrees centigrade and surrounding temperatures of +30 degrees centigrade. All units should also have visible exterior thermometers, external light switches for interior lighting, and an internal, push-button safety bell.

4. REFRIGERATION SYSTEM. Each unit must have an associated, industry standard primary and backup refrigeration system, with precoolers, at 100% operation capacity for each system, (compressor, condensing unit, evaporator unit, etc) capable of sustaining required temperatures as low as –30 degrees centigrade for the required unit volume. Both primary and backup refrigeration systems must be equipped with pressure and system controls and gauges. Contractor shall ensure that all equipment furnished is energy efficient based on prevailing industry standards.

5. AUTOMATIC CONTROL UNIT. Each unit must have an associated, industry standard primary and alternate electrical switch board for the primary refrigeration system and the back-up system. Each electrical switch board shall be a micro processing system designed for forced circulation with both low and medium temperature range application, shall be capable of being programmed by the user with push buttons, shall have associated indicators and controls for all refrigeration functions and temperatures, and shall have outputs to activate the relays for the compressors, defroster, evaporators, and fan controls.

6. LIGHTING. Each Unit shall be equipped with industry standard interior lighting suitable for walk-in freezers, and exterior lighting for entrance ways, external refrigeration equipement, and control panels.

7. EXISTING ELECTRICAL POWER. The contractor will not change the existing power and must use the same electrical power of the old freezer and chiller.

8. SITE WORK AND CLEANUP. The contractor is responsible for any site work and clean up associated with the installation of the freezer and chiller units on the ECC hard stand area. Minor excavation work will include the relocation of the service panel, removal of old electric cables, and the installation of new cable work. Horizontal tasks will include backfilling tamping and capping any required trenches cut into the asphalt hardstand associated with removal, installation, or relocation of electrical cables. Also, minor horizontal tasks will include any necessary leveling prep work associated with the removal of the old freezers and chiller the placement of the new freezers and chiller on the existing hardstand. The contractor accepts ownership of all salvage material and is responsible for removal and disposal from Eskan Village of all unwanted materials associated with this project in accordance with local laws and regulations.

10. SUBMITTALS. Contractor will supply all manufacturer data and vendor information on all units or components used in the project construction and installation. Unit of weights and measures used on all submittals shall be the same as those used on the contract drawings. Each submittal shall be complete and in sufficient detail to allow ready determination of compliance with contract requirements.

11. OPERATION AND MAINTENANCE MANUALS. The contractor will provide 6 sets of the O&M manuals for all associated equipment. The manuals shall have full details for the equipment and system installed. Manuals should include the recommended spare parts, systems operating instructions, routine and preventive maintenance schedules, diagrams, and other instructions or recommendations to assist in maintaining the equipment.

12. USER TRAINING. Prior to departure, the contractor shall instruct users on the operation of the the freezer and chiller systems and all associated components to include troubleshooting techniques and immediate action steps if a failure occurs.

13. AS BUILT DRAWINGS. Copies of all vendor provided drawing and specifications for commercial freezer units must be provided as submittals. If the contractor elects to construct freezer units rather than use commercially available items, the contractor will provide final shop drawings of this project and submit for Government approval. Drawings will be updated through the duration of the contract to reflect the “AS BUILT” conditions. Six (6) copies of the approved AS BUILT drawings will be submitted to the Contracting Officer.

14. SAFETY. The contractor shall furnish the government with Material Safety Data Sheets (MSDS) for all chemicals and mixtures used in the refrigeration system process and used in accomplishing contract work. The contractor shall post copies of all MSDS on the job site and shall make these MSDS readily accessible to the government construction inspectors, government safety inspectors, government medical authorities, and freezer contractor employees. The contractor shall post copies of all MSDS at the construction job site prior to starting any freezer fabrication or construction work. The contractor shall perform all fabrication and construction works in accordance with the safety and health requirements manual book of (US. ARMY CORPS OF ENGINEERS) EM 385-1-1 Dated SEP 96 (Copies are available at USMTM Engineering office for contractor’s use throughout the duration of the project).

15. PRELIMINARY AND FINAL INSPECTION. The contractor shall coordinate with the Contracting Officer in writing, 48 hours in advance of project completion to allow scheduling of preliminary and final inspection.

16. WARRANTY. The contractor warrants that work performed under this contract conforms to the contract requirements and is free of any defects of materials, design, or workmanship performed by the contractor, his suppliers, or subcontractors, at any time. Such warranty will include all parts and labor, and will continue for a period of one (1) year from the date of final acceptance of the work performed under this contract.