A.02 SOW_Hospital Refurbishment, CAR.pdf

US Army Corps of Engineers Europe District

APO AE 09049

ar200

Statement of Work Project Number:

Proj. No.: 517255 Fiscal Year: 2025

Hospital and Maternity Ward Refurb Bangui, Central Africa Republic

Prepared by:

Design Section

Engineering Branch January 2025

01 10 10 Statement of Work Hospital and Maternity Ward Refurb – Bangui, CAR

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SECTION 01 10 10

STATEMENT OF WORK

SECTION TABLE OF CONTENTS:

*SEE NAVIGATION TAB

1 GENERAL

2 STRUCTURAL

3 ELECTRICAL

ATTACHMENTS

Attachment # 1 Project Location Map Attachment # 2 Site layout Attachment # 3 Conceptual UPS diagram.

Attachment # 4 Structural Calculations Guideline

1.0 GENERAL

1.1 PROJECT DESCRIPTION

The Request for Proposal (RFP) provides parameters for a design-build project for improvements of existing electrical power system of the central community hospital in Bangui, Central Africa Republic; Latitude 4°23'15.8"N , Longitude 4°23'15.8"N 18°33'24.3"E (Refer to the attached Location Map.)

This project aims to improve the electrical power resiliency of the critical areas of the hospital by implementing an uninterruptible power supply, battery bank and Photovoltaic systems.

The project includes the following general items of work, detailed requirements are contained elsewhere in this Statement of Work:

a. New uninterruptible Power Supply, Battery Banks and Photovoltaic systems to improve power resiliency.

b. Replace roof on shed for the addition of Photo Voltaic (PV) panels.

1.2 GENERAL REQUIREMENTS

The Contractor must deliver fully functional, turnkey type facilities (without mobile furniture) as described in this document. The work includes - but is not limited to - design, demolition, fabrication, delivery, installation, construction, and site work.

The facility in this project must be complete and usable to meet codes and technical and functional requirements per this Statement of Work (SOW). The proposal price must include all design, calculations, approvals, certificates, fees, labor, material, equipment, direct overhead, indirect overhead, general and administrative expenses (G&A) and general conditions to complete this project as described in the SOW.

These design and product requirements are minimum requisites. Compliance with the provisions of this section by subcontractors is the responsibility of the Contractor.

1.2.1 BASE ITEMS AND OPTIONAL ITEMS

This Statement of Work addresses the technical requirements necessary to complete all work associated with this project. For information and requirements regarding the allocation of pricing between elements of the work, refer to Specification Section 01 22 00 PRICE AND PAYMENT PROCEDURES. The Schedule of Items identifies the breakdown between the individual base items and optional items for all work

10-Jan-25 Page 3 of 15 identified in this Statement of Work, associated drawings, and attachments. All work as described in these documents is included in either the Base or Optional Items. Consider all items not specifically identified in the Optional Items as part of the Base Items.

1.3 SUBMITTALS

Designer of Record approval is required for submittals with a “DA” designation.

Government approval is required for submittals with a “G” or “GA” designation.

Submittals having an “FIO” designation are for Contractor Quality Control approval. Submit the following to the Contracting Officer (KO) in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Demolition Plan; G

Sequence of construction Plan; G

SD-05 Design Data

65% Pre-Final Design; DA/GA

95% Final Design; DA/GA

100% Corrected Final Design; DA/GA

SD-06 Test Reports

Test Results and Reports; FIO

1.3.1 DESIGN SUBMITTALS

Provide a complete design package at each milestone, as described in RFP Section 01 33 16-DESIGN AFTER AWARD. The milestones for this project are indicated above in Section 1.4 SUBMITTALS. The specific requirements of each milestone are described in each discipline-specific section of this Specification.

1.3.2 REPORTS

Provide all test results and reports identified in this SOW to the Government as a submittal in accordance with RFP Section 01 33 00-SUBMITTAL PROCEDURES. Submittals will be considered for information only (FIO) submittals unless specifically identified as a submittal requiring government approval. Coordinate with the KO after award for the specific items to be included in the submittal register.

1.4 MATERIALS AND EQUIPMENT

Materials and products used must be durable, heavy duty, industry standard. The equipment must be the manufacturer’s standard quality and must be compatible with all other equipment and materials within the system or assembly. Equipment and materials must include all connections and accessories necessary to ensure operability and correct installation according to manufacturer’s requirements.

Provide a nameplate secured to each major piece of equipment. Each nameplate must have the manufacturer’s name, address, contact information, type or style, model or serial number, and catalog number. The definition of a “major piece of equipment” is at the discretion of the KO.

1.4.1 LIFE-SPAN

The facility and the installed equipment must be permanent construction with an expected lifespan of more than 25 years.

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1.4.2 MAINTAINABILITY

Provide low maintenance materials and systems appropriate for the project climate and location.

1.4.3 OPERABILITY

Systems (including but not limited to architectural, electrical, communications, and mechanical systems) must be simple to operate and easy to maintain.

1.4.4 STANDARDIZATION

Provide standardized materials, products, equipment, and systems to minimize the requirements for replacement parts, storage facilities, and service requirements.

1.5 DESIGN DIMENSIONS

Develop the design using the metric system.

1.6 DESIGN CRITERIA

Project design, site facilities, utility systems and material standards must be in accordance with:

a. International Building Code (IBC)

b. Host Nation and Local Building Codes and Standards

While this RFP references various source standards and specifications, all design documents are to meet Host Nation codes and requirements. The more restrictive standards apply when conflicts arise between the requirements of this RFP and any referenced or other applicable codes, standards or regulations. If equivalency cannot be met, use the more stringent requirement and quote both codes verbatim in correspondence to the KO. The designer is responsible to determine the required material and execution standards where specific standards are not indicated.

1.7 SPECIAL CONSTRUCTION REQUIREMENTS

1.7.1 DEMOLITION

The Contractor is responsible for all required demolition as indicated in this scope.

Submit a Demolition Plan to be tracked via the submittal register indicating all demolition, abatement, and disposal methods.

1.7.1.1 ABATEMENT AND DISPOSAL

All demolished materials, including hazardous materials identified below, must be abated and disposed of in accordance with local laws, codes and regulations. The Contractor is responsible for all required testing before, during and after demolitions as well as for all required compliance with safety standards.

1.7.1.2 LOCATION OF HAZARDOUS MATERIAL

The Contractor is responsible to survey the site and determine if hazardous materials exist. If hazardous materials are found to exist, immediately notify the KO and provide the results of the relevant sampling and testing. Provide the hazardous material report no later than 30 days after Notice to Proceed (NTP) for information and approval.

1.7.2 PROTECTION OF WORK AREA

1.7.2.1 DUST AND DEBRIS CONTAINMNET

Seal the project area with construction barriers and dust partitions in order to contain construction dust and debris and maintain a clean environment outside of the work area. In addition to protections within the work area, provide temporary protection for all finishes from the entrance of the facility to each area of

10-Jan-25 Page 5 of 15 work. Patch and repairing any damage caused during construction. Coordinate the locations of barriers with the Government prior to the start of work.

1.7.2.2 PROTECTION OF FURNITURE, FIXTURES, AND EQUIPMENT

Protect all existing furniture, fixtures, and equipment that remain within the work area. Coordinate with the Government for any special protection measures required for sensitive equipment. The Contractor is responsible for repairing or replacing any damage caused during construction. The Contractor must conduct a preconstruction survey of furniture, fixtures, and equipment with a Government representative present.

1.7.2.3 NOISE AND VIBRATION CONTROL

Employ demolition and construction methods that minimize the production of sound and vibration. Coordinate the schedule of especially loud or disruptive activities with the KO prior to the start of work.

1.7.2.4 PROTECTION OF EGRESS AND LIFE SAFETY

The Contractor must not take actions that hinder existing egress paths or disrupt operation of life safety systems without prior coordination with the KO and all applicable authorities having jurisdiction (AHJ). The Contractor is responsible for supplying signage or other protective measures as required by the KO or AHJ prior to impeding the egress path or life safety system.

1.7.2.5 ENVIRONMENTAL TOBACCO SMOKE CONTROL

Smoking is prohibited with the building and a minimum of 15 meters of all building entrances, operable windows, and building ventilation intakes.

1.7.2.6 REDUCE ENVIRONMENTAL IMPACT OF MATERIALS

Use construction products that have a lesser or reduced effect on human health and the environment.

Do not use ozone depleting compounds and high global warming potential (GWP) chemicals.

1.7.3 SEQUENCING OF CONSTRUCTION WORK

The Contractor must sequence construction to allow the facility to remain occupied during construction. Do not block access to occupied areas during construction.

Utility and communication services must remain functional in all occupied areas.

Some relocation of equipment and/or personnel may be required to comply with this requirement.

Provide a Sequencing Plan with the 95% Final Design Submittal. The Sequencing Plan must describe the proposed performance of construction operations to comply with the sequencing requirements by the user. The Sequencing Plan must include a graphical depiction of the sequencing of each work area and mobilization/staging area. The Sequencing Plan is in addition to the requirements of RFP Section 01 32 01-PROJECT SCHEDULE or 01 32 16-SMALL PROJECT PROGRESS SCHEDULES (NOTE: Only one of these specifications applies to this contract, refer to other documents for the section applicable to this project).

END OF SECTION

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2.0 STRUCTURAL

2.1 GENERAL

The Contractor must provide and perform structural engineering design and construction services as required to provide a complete, accessible, functional and usable project.

The primary structural effort of this project includes:

a. Replace roof on shed for the addition of Photo-Voltaic panels.

b. Analyze walls for the addition of the battery racks.

c. Other elements must include but are not limited to foundations, superstructure (i.e. walls, columns and beams), roof framing, lateral load stability and diaphragm design, framing and connection of any architectural features, and support of mechanical and electrical equipment.

The Contractor must have as part of his design team a licensed structural engineer per Host Nations standards. If work is being performed in a country that does not have licensed structural engineers, then engineering degrees along with extensive structural design experience can be submitted to the KO for qualification verification and approval. The structural engineer’s licensure or qualifications must be submitted to the KO in the design quality control plan prior to the start of design. The Contractor’s structural engineer must be responsible for the design of any part of the building structural systems.

The structural design of the foundation, superstructure and any other structural aspects must be in accordance with the design criteria listed in this document.

The superstructure of the project building and the foundation must be constructed from locally available materials.

2.2 APPLICABLE DESIGN CRITERIA

All Design, Safety in Construction, Materials, and Performance of Construction Services must be in accordance with current local or national Host Nation codes and standards. In absence of Host Nation codes, use 2021 International Building Code and ASCE 7-16 for structural calculations. In case of conflicting requirements between the various elements, the more stringent criteria must govern.

Any material or construction installed by the Contractor as part of this contract that does not meet the requirements of this RFP or does not meet the applicable codes and standards must be removed and replaced at the Contractor’s expense.

Structural design methods and allowable stresses or load factors for the various structural materials must be in accordance with paragraph 1.7 of this document.

2.3 SUBMITTALS

2.3.1 DESIGN SUBMITTALS

The Contractor must provide the structural submittals after contract award in accordance with RFP Section 01 33 00-SUBMITTAL PROCEDURES. In addition to General Section 1.4 SUBMITTALS of this document the following documents must be submitted.

2.3.1.1 DRAWINGS & SPECIFICATIONS

The following structural detail drawings must be provided by the Contractor as required, but must conform to the requirements of this SOW and are subject to the approval of the KO. Construction drawings must include:

65% Design Submittal

a. Formwork drawings of the load bearing structure including shoring and reshoring as required (min. scale 1:50)

b. Preliminary roof framing plan

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c. Reinforcement drawings for primary framing members (min. scale 1:50)

d. Details of connections for primary steel framing members (min. scale 1:10)

95% Design Submittal

a. All items from the 35% and 65% Design Submittal requirements

b. Complete reinforcement drawings (min. scale 1:50)

c. All necessary sections and details of the load bearing structure (min. scale

1:20)

d. Shop drawings of the steel structure (min. scale 1:50)

e. Roof framing plan with member sizes and connection details.

f. Details of all connections for the steel structure (min. scale 1:10)

g. Detailed specifications that are typically sent to sub-contractors.

100% Submittal

a. The 100% Submittal provides a complete and final set of contract documents ready for construction. All previous government review comments must have been addressed. Include all updated drawings, specifications and calculations from the 95% Submittal.

b. The design criteria actually used for the structural design must be referenced in the structural notes on the drawings including but not limited to applicable codes, standards and specified material strengths.

c. Letter of certification from proofing engineer.

As Built Drawing Submittal

a. The As-built Submittal provides a complete and final set of record drawings documenting site conditions based on a survey of the final construction performed by the Contractor.

The design documents used for the structural design must be referenced in the structural notes on the drawings.

2.3.1.2 STRUCTURAL CALCULATIONS & DESIGN ANALYSIS

The Contractor must submit the structural calculations of all load bearing structural elements and their connections related to this RFP in a design analysis provided with each submittal. The design analysis must state and list the basis of design for all project aspects and features. The design analysis and calculations must be in accordance with the attached NAU Engineering Guideline Preparation of Structural Calculations. The current local or national Host Nation codes and standards on which the structural calculation are based must be referenced in the calculations. If applicable, an electronic copy of the applicable local or national Host Nation codes must be provided. Structural calculations must be sequentially numbered for ease of referencing for all submittal stages.

2.4 STRUCTURAL DESIGN CRITERIA

Structural design methods and allowable stresses or load factors for the various structural materials must be in accordance with the Applicable Design Criteria paragraph 4.2. Requirements in the codes, specifications and industry standards are requirements of this document, unless specified otherwise. The references used for the project design and contract documents must be included in the design analysis required for this project.

2.4.1 MINIMUM STRUCTURAL DESIGN LOADS

The design loads must be determined in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2. The design load criteria specified herein are minimums; the Contractor is responsible for verifying the actual design loads for this site. If actual design loads are different than that listed herein, the Contractor must notify the KO. The Contractor should determine if special loadings must be considered and notify the KO. Any cost and/or schedule impact due to the Contractor’s failure to notify the KO of these requirements

10-Jan-25 Page 8 of 15 specified herein four weeks before the submittal is due must be to the Contractor’s account. Design loads must be included in the structural notes on the drawings. The minimum design load criteria for this project as follows:

2.4.1.1 DEAD LOADS

The structural system must be designed and constructed to safely support all dead loads, permanent or temporary, including but not limited to self-weight, insulation, ceiling, and all equipment that is fixed in position. Loads from architectural/mechanical/electrical equipment must be coordinated with the appropriate discipline. For bidding purposes, assume PV panels (including frames) weight 25 kg/m2. All loads and load case combinations must be in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2.

Load factors for designs must be based on the applicable material design standard.

2.4.1.2 LIVE LOADS

2.4.1.2.1 ROOF LOADS

Roofs must be designed to support live loads, and wind loads including PV Panels and components and cladding, in accordance with the Applicable Design Criteria paragraph 4.2.

2.4.1.2.2 HORIZONTAL LOADS

The structural system wind design, including components and cladding, and the seismic design must be in accordance with the codes and standards listed in the Applicable Design Criteria paragraph 4.2. Research local wind requirements and indicate in the design analysis and wind calculations whether a wind speed greater than the code minimum is required. When IBC 2018 and ASCE 7-16 are employed for the wind design, the minimum design wind speed must be 177 km/h (110 mph).

2.5 MATERIALS

The use of the recommended materials and/or alternative materials must be in conformance with the publications listed in the Applicable Design Criteria paragraph 4.2. Any exceptions must be noted. Alternative materials may be submitted to the KO for approval if the Contractor determines the materials are more economically viable for this geographic region. Any material or construction that does not meet the requirements of this SOW or does not meet the applicable codes and standards must be removed and replaced at the Contractor’s expense.

2.5.1 MASONRY

Clay bricks, solid bricks, perforated bricks, or any other masonry materials used in the project must conform to the appropriate Local or Host Nation Standard.

2.5.2 STRUCTURAL STEEL

Structural steel must be of a minimum steel grade equivalent S 235 conforming to the applicable Eurocode standard.

2.5.3 HOLLOW STEEL SECTIONS

Hollow steel sections must be of a minimum steel grade equivalent S 235 conforming to the applicable Eurocode standard.

2.5.4 COLD-FORMED STEEL FRAMING MEMBERS

Cold-formed steel framing members must have a minimum steel grade equivalent S 235 conforming to the applicable Eurocode standard.

2.5.5 WOOD

Wood must be new lumber, undamaged, not infected with insects and show no signs of previous use. It must be chemically protected against termites and other harmful insects or deterioration. Chemical treatment of wooden construction must be non-toxic and harmless to the environment (Contractor to provide proof certificates and manufacturer’s information).

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2.6 BUILDING COMPONENTS

2.6.1 STRUCTURAL ROOF FRAMING

Roof framing members must be either wood or steel. Replace roof covering in-kind.

Slope roof to match existing. All metal framing members must be painted, or factory finished with a corrosion resistant coating that will last the design life of the structure. All wood framing members must not be in direct contact with masonry, provide rubber membrane between wood and masonry.

2.6.2 EXISTING WALL ANALYSIS

Analyze the existing walls for the addition of electrical components in accordance with this SOW. Electrical component include batteries and battery racks, and electrical cabinets. Reinforce the wall as required to support the additional loads.

2.7 TESTS AND INSPECTIONS

Construction inspections and material testing must be in accordance with local building codes. If no local codes are available regarding testing and inspection, follow guidance in IBC.

3.0 ELECTRICAL

3.1 GENERAL

This section includes requirements for the design, procurement, installation, and testing of a complete electrical power system. Provide a complete design and perform all labor and provide all materials, equipment, machinery, supervision, and any other items necessary to complete the electrical systems.

Electrical design must conform to the design criteria, standards, codes, and locally accepted equivalent host nation practices. Specially selected design products must have been proven reliable and trouble-free in commercial service locations for two years and longer in an environment similar to that of the project site.

3.1.1 APPLICABLE DESIGN CRITERIA

Project design must be in accordance with the requirements outlined in Section 1.7

DESIGN CRITERIA.

The electrical installation must be designed and constructed to comply with German Local National Codes and Standards. Performance standards where more stringent must be based on applicable US codes and criteria and specific facility operational requirements.

In the absence of Host Nation Building Codes, use the International Building Codes

(IBC):

International Electrical Commission Publications I.E.C.:

IEC 60309 Standard for plugs, socket-outlets, and couplings for industrial purposes IEC 60144 Degrees of protection of enclosures for low voltage switchgear and control gear IEC 60227 Polyvinyl chloride insulated cables of rated voltages to and including 450/750V.

IEC 60423 Outside diameters of conduits for electrical and threads for conduits and fittings

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IEC 60454-1-3 Specifications for pressure-sensitive adhesive tapes for electrical purposes

IEC 61386 Conduit systems for cable management IEC 61537 Cable Tray Systems and Cable Ladder Systems for Cable Management IEC 61439 Low-Voltage Switchgear and Control-gear Assemblies IEC 60331-21 Tests for electric cables under fire conditions - Circuit integrity IEC 62548 Photovoltaic (PV) Arrays Design Requirements IEC 62612 Self-ballasted LED Lamps for General Lighting Services with

Supply voltages > 50V IEC 62040-1 General and Safety Requirements for UPS Systems IEC 62040-2 Electromagnetic Compatibility (EMC) Requirements for UPS Systems IEC 62040-3 Method of Specifying the Performance and Testing of UPS Systems IEC 62040-4 Performance and Testing – Endurance Testing IEC 60664-1 Insulation Coordination for Equipment within Low-Voltage Systems IEC 60364 Electrical Installations of Buildings IEC 62477-1 Safety Requirements for Power Electronic Converters and Systems

3.1.2 SD-03 PRODUCT DATA

The following product data must be submitted and accepted by the KO prior to installation and commencement of required feature of work:

a. Metal Tubing

b. Conduit Fittings

c. Conductors

d. Outlet and splice boxes

e. Receptacles

f. Toggle Switches

g. Panel board

h. Circuit Breakers

i. Terminal Cabinets

j. Disconnect Switches

k. Conduits

l. Cable Trays

m. Surface Metallic Raceway

n. Uninterruptible Power Supply

o. Photovoltaic system including inverters, converters, and charger controller.

p. Batteries

3.1.3 SD-02 SHOP DRAWINGS

Submit the following to the KO during construction:

a. Panel boards

b. Circuit Breakers (to be submitted together with Item a)

c. Panel board Accessories (to be submitted together with Item a)

d. Uninterruptable Power Supply.

q. Photovoltaic systems including inverters, converters, and charger controller.

e. Batteries

3.1.4 SD-06-09 FIELD TEST REPORTS

Submit the following to the KO during construction:

a. 600V Wiring Test

b. Grounding System Test

c. UPS performance, safety, short-circuit and insulations Test.

d. Photovoltaic Performance, environmental, safety, durability test

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3.1.5 DRAWINGS AND DESIGN ANALYSIS

The following electrical detail drawings must be provided as required but must also conform to the requirements of this SOWS and are subject to the approval of the KO. Provide the following drawings and analyses of each of the listed submittals:

65% Design Submittal

a. Legend and Abbreviations.

b. Electrical Site Plan(s).

c. Demolition plan(s), showing existing conditions and demolition work.

d. Single line diagrams for the building electrical system.

e. Power Plan(s) showing locations of MDP’s (Main Distribution Panels), SDP’s

(Sub-Distribution Panels), transformers, UPS and associated controls, wire ways, power receptacles, ground bars, and electrical connections for mechanical and other equipment. Circuit information must be shown.

f. Grounding floor plan(s) and risers.

g. Panel schedules.

h. UPS system diagrams and details.

i. Photovoltaic system diagrams, floor pans and details.

j. 65% Design Analysis (DA) including electrical calculation package.

95% Design Submittal

a. All requirements for the 65% submittal, updated per comments from the 65% review meeting.

b. Additional plans and Risers.

c. 95% Design Analysis.

d. Specifications detailing materials, equipment, and installation methods.

100% Design Submittal

a. All requirements for the 95% submittal, updated per the comments for the 95% review meeting.

3.1.6 ELECTRICAL DESIGN ANALYSIS

Provide a design analysis for each design phase of the project. Provide the following minimum information:

a. Load calculations and demand factors to include an additional 25% for future loads.

b. Short circuit calculations and ampere interrupting capacity (AIC) rating of distribution equipment.

c. Electrical coordination study of new building power distribution and protective devices in coordination with existing systems.

d. Voltage drop calculations.

e. Electrical design narrative describing electrical design components and changes and decisions completed from each design reviews.

f. Catalog cut sheets for cables, light fixtures, panelboards, UPS, photovoltaic system, circuit breakers, and other unique equipment.

3.2 ELECTRICAL SCOPE

Provide electrical systems design for the improvements and upgrades of the electrical power resiliency and backup power systems of critical areas in the hospital.

a. Provide a new photovoltaic system and connect it to the building’s Main Distribution Panel.

b. New double conversion Uninterruptable Power Supply (UPS) system and battery bank system for the following critical areas (the order of the areas are from the most critical to the less critical):

(1) three Operating rooms

(2) three Radiology rooms

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(3) two Emergency Rooms

(4) Intensive Care and Surgical rooms

(5) Morgue

(6) Administrative

c. New electrical distribution panels in critical room/areas.

d. OPTIONAL ITEM:

Increase battery bank capacity by increments of 5%

3.3 DEMOLITION

Demolition includes the following and areas defined in this document:

a. Existing dedicated panels and in operating rooms, radiology, emergency rooms and morgue.

Demolished material must be hauled away and disposed of properly.

3.4 EXTERIOR ELECTRICAL WORK

3.4.1 ELECTRICAL SERVICE

The existing electrical service will not be modified. The hospital is being serviced by an existing transformer station with the following equipment:

transformer 15kV/400V, 400kVA Low voltage distribution switchboard – 1250A, 400V, 50Hz Main Distribution Panel feeding the hospital – 1000A, 400V, 50Hz

Coordinate with the local power company to clarify all connection points, availability of capacity and adequateness of incoming feeder lines. Any cost incurred is the Contractor’s responsibility.

3.4.2 EXTERIOR POWER SYSTEM

3.4.2.1 PHOTOVOLTAIC SYSTEM

Provide a new roof mounted photovoltaic system, the proposed building to support the system is shown on the attachments. The PV modules must be IEC 61215, IEC 61646 compliant, solar panels must utilize all the roof area available of the proposed structure. refer to attachment for location of proposed structure.

The power generated by the PV solar panels must be connected to the buildings main Distribution Panel. Provide all wiring, connections, surge protection, circuit breakers and accessories needed for a complete, secure, operational grid-tied PV system. All wiring must be copper, and cabling exposed to sunlight must be UV rated. Provide grounding and bonding for the PV solar mounting structure and modules in accordance with the listed design criteria and the manufacturers recommendations. Ground resistance must not exceed 25 ohms.

PV modules must be of monocrystalline for rack mounting, efficiency of the modules must be greater than 15%, modules must be of the same manufacturers.

and module number. Provide high-power type PV module(s), with typical peak power of not less than 315 watts, plus or minus 3 percent power tolerance, under Standard Test Conditions (STC). The AC output must not be less than 80 percent of the DC kWp rating.

Provide galvanized rigid steel conduit above ground and PVC conduit below grade.

Provide meter(s) for renewable energy system(s) to monitor renewable energy generated.

The photovoltaic must comply with the Host Nation Requirements.

Provide a complete description of the function of each component including:

PV modules, DC wiring, combiner boxes, inverters, AC wiring, AC and DC disconnect switches, and monitoring system. Provide a discussion of the overall system operation.

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Inverters Provide inverter utilizing wall mount support system, array-to-inverter kW must not exceed the manufacturer recommendations. Inverter enclosures must be rated for outdoor use. Provide inverters with anti-islanding protection to prevent back-feeding inverter generated power to the grid in the event of utility outage, inverters must have overcurrent protection, ground fault protection, arc fault circuit interrupter and a rapid shutdown.

Provide inverter with self-diagnostics routines, and remote and local display of operating status and remote monitoring capabilities. Provide inverter compatible with monitoring system and metering system.

3.5 INTERIOR POWER SYSTEMS

3.5.1 UNINTERRUPTABLE POWER SUPPLY

Provide new double conversion Uninterruptible Power Supply (UPS) and battery bank system for each of the critical rooms and areas identified in section 3.2(b).

The UPS must be rated to accept an input voltage of 3-phase 400 volt, 50Hz and an output voltage of 1-phase, 230-volt, 50Hz. The battery system must be sized and designed to provide emergency backup power for all the critical loads for a minimum of 1 hour. Each room must have its own dedicated UPS and battery bank and all equipment must be integrated in lockable metal cabinets or racks. Ensure UPS include a bypass mode, Provide spill control for all battery installations.

The proposed system outlined below is for reference purposes only. The contractor is responsible for the design and calculations of the system and providing all necessary components for a fully operational and complete system.

Proposed system per room applicable to operating rooms, radiology rooms, emergency rooms, intensive care and surgical rooms, and morgue:

• One new 3-phase 400/230volt, 50Hz electrical panel dedicated for existing non-critical loads.

• One new 10kVA double conversion UPS including all charging controllers, filters, inverters.

• Four new 12-volt, 220Ah AGM deep cycle batteries

• One new 1-phase 230volt, 50Hz electrical panel dedicated for existing critical loads.

Proposed system applicable to administrative building:

• Reuse existing main Distribution panel.

• One new 10kVA double conversion UPS including all charging controllers, filters, inverters.

Four new 12-volt, 220Ah AGM deep cycle batteries.

• One new 1-phase 230volt, 50Hz electrical panel dedicated for existing critical loads.

The proposed UPS and battery bank system can only provide emergency backup power to critical loads, not to the entire buildings.

3.5.2 ELECTRICAL DISTRIBUTION PANELS

Replace existing dedicated electrical panels providing power to the operating rooms, radiology rooms, emergency rooms, intensive care and surgical rooms, and morgue. Panels must match the ratings of existing panels. Existing feeders will be reused. These replacement panels will provide power to the existing non-critical loads; provide all the required wiring, electrical infrastructure, and

10-Jan-25 Page 14 of 15 terminations to complete the circuits and have a fully functional electrical system.

Provide new 1-phase 230-volt distribution panels connected to the secondary side of the UPS in each of the operating rooms, radiology rooms, emergency rooms, intensive care and surgical rooms, and morgue. This panel will provide power for the existing critical loads. Existing critical loads must be transferred from the old panel to this new panel. provide the required wiring, electrical infrastructure, and terminations to complete the circuits and have a fully functional electrical system.

(Refer to attachments for a conceptual diagram of the proposed UPS system and new panels.)

The distribution equipment must be sized to meet circuit load and the relevant short circuit requirements. Short-circuit currents must be limited as specified in Host Nation Requirements (HNR) Nominal voltage: 400/230-volt for 3-phase and 230-Volt for single phase Frequency: 50 Hz System: TNS (L1, L2, L3, N and E)

Molded Case Circuit Breakers (MCCBs) must be used generally within the Low Voltage (LV) distribution system. Circuit breakers must be of one common manufacturer.

Breakers must comply with Host Nation requirements and the following:

a. Sized for a minimum of 125% of the demand load they serve for future growth.

b. Expandable and must have a minimum spare space of approximately 25%.

c. Ammeters must be provided with 15 min average maximum indication.

d. Provide voltmeters.

e. Distribution boards must be provided with a suitable earth bar and neutral bar, with adequate provision for the connection of a circuit protective conductor for each outgoing way.

f. Fully rated for the available fault current and furnished with main circuit breakers full sized bolt-on branch breakers, insulated neutral busses and bonded equipment-grounding busses.

g. Panel board bus bars must be copper.

h. Each distribution board must be provided with an engraved plastic label on the outside of the front cover, bearing the designation of the board and its reference number, if any, as given on the drawings or in the schedules. The label must be fixed in position by chromium-plated set screws. Each such label must be not less in size than 100 mm x 30 mm, and must bear the required inscription in white on a black background, using letters and/or digits not less than 5 mm high.

i. Surge/over voltage protection is to be provided within the panels in accordance with HNR.

3.5.3 INTERIOR POWER INSTALLATION:

Cable installation throughout the facility must be surface in conduit. Cables for receptacle and lighting circuits must be plastic coated cable as required by Host Nation codes and standards for the facility type. Maximum voltage loss for any branch circuit must be 3% and for a feeder must not be more than 2%. The minimum cross sections of the cables must be 125% of the required maximum load. The cross-section must not be less than 1.5 mm² for lighting circuits, and 2.5 mm² for electrical outlets. These minimum cable sizes may need to be increase in size to stay within the voltage drop requirements. Calculations and design analysis must be provided for all circuits. Aluminum cable must not be provided.

The interior electrical distribution system must match existing incoming supply feeder and utilize a separate equipment ground conductor run continuous throughout

10-Jan-25 Page 15 of 15 the facility. Branch circuits feeding receptacles of unknown loads must be limited to 1200 VA per circuit.

1.7.3 SEQUENCING OF CONSTRUCTION WORK

2.7 TESTS AND INSPECTIONS