ELECTRICAL DESIGN CRITERIA (POWER AND COMUNICATION)

ELECTRICAL DESIGN CRITERIA (POWER AND COMUNICATION)

A- ELECTRICAL POWER & LIGHTING DESIGN CRITERIA

1. General

1.1 Introduction

This section describes the basic design guidelines that will be used in preparing the electrical design and documents for JIZAN MEDICAL CENTER in JIZAN.

The medical center is part of a campus with one infra-structure.

The campus shall have a main power supply from the Saudi Electricity Company SEC. For a campus of this size SEC usual builds a transformer station to transform power supply from 132 KV to 13.8 KV. SEC usually asks for a piece of LAND around 50x60m to put the transformers and equipment at that location.

The medical campus shall have its own 13.8 kV main substation to distribute the 13.8 kV power to all buildings in the campus. It is recommended to keep the low voltage as a unified voltage in all buildings 380/220 V 3phase, 60 Hz. This is in line with the trend in Saudi Arabia.

1.2 Scope of Work

The electrical systems for this building shall consist of the following items including all the necessary raceway:

Main power distribution including substations, transformers, boards. etc.

Generators and standby system, etc.

General Lighting for Indoor and Outdoor

General Power for Indoor and Outdoor

Grounding System

Lightning Protection System

Un-interruptible Power Supply (UPS) for computer server

Isolated Power System.

Audio-visual system.

The communication, security and control systems are covered in section "B- COMUNICATION, SECURITY AND CONTROL" of this report

1.3 Codes and Design Standard

The SAUDI ARABIAN STANDARD ORGANIZATION (SASO) is the official standard organization of Saudi Arabia. SASO is adopting the different standards of International Electro technical Committee (IEC) and translate them into ARABIC after minor modification.

Based on the above Saudi National Standard Policy; All the Electrical systems shall follow the following main standards

SASO Saudi Arabian Standard organization

IEC International Electro technical Commission (SASO is based on IEC)

Other standards and codes can be used in areas not covered by SASO/IEC. These other standards include:

BS British Standard including IEE Wiring regulation

NEC, NFPA and other American standards

Civil Defense Department (Local Authority) requirement and instruction are mandatory.

Material Selection Standard

All electrical products specified for this building shall be specified according to one of the following standards as per sequence:

SASO   Saudi Arabian Standard Organization

IEC      International Electrical Commission

Other Europeans standards like EN, BS, DIN, etc.

Other American Standards Like ANSI, NEMA, ASTM and IEEE

The electrical products used in this building shall be tested and approved to meet the applicable standards by one of the independent test laboratories (or approving agencies) including: SASO, IEC, BS, ASTA, KEMA or UL or similar agencies.

Following specialized standards shall be used:

Lighting System shall be as per IES -Illuminating Engineering Society 9TH Edition 2000.

Health Care Facility Handbook (based on NFPA 99) for general guidelines of hospital system design

1.4 Environmental Conditions

The ambient temperature to be used for calculation purposes is tabulated as follows:

1.5 Utilization Voltage

The following table indicates the nominal system and standards utilization voltages for particular items of electrical network.

1.6 Voltage Drop

For calculation of voltage drop; the following rules shall be used: A maximum Total of 2% from the main supply intake position "transformer" to "Main Distribution Board" MDB.

A maximum Total of 3% from the Main Distribution Panel "MDP" to the farthest point of use shall be used.

A maximum Total of 5% from the main supply intake position "transformer" to the farthest point of use shall not be exceeded.

1.7 Branch Circuits

The design shall be based upon the use of copper conductors of a minimum of 4 mm2.

16A and 20A (Ampere Trip) Circuit Breakers will be used for wiring of power and lighting branch circuits. Most of the circuit will use 20A, but for small loads like in guard house or similar cases, the 16 A can be used.

With derating for inside panel temperature, the 20A nominal Circuit breaker is only 17 A.

By allowing 25% spare the 20A nominal circuit breaker shall be loaded to 13.6A

Separate lighting and power/receptacle circuits.

20 percent spare ways will be provided in lighting and/or receptacle panel boards.

1.8 Socket Outlets

General-purpose Receptacle outlets will be provided as required and shall be limited to eight per branch circuit. The general purpose receptacle shall be as per applicable standard SASO (13A). The general-purpose receptacles are in addition to the special purpose and dedicated outlets for specific equipment such as outlets for computers, office equipment and other

Circuit loading shall be estimated on the basis of 180 VA for each outlet, unless specific conditions necessitate other loading.

All sockets outlets in wet areas, outside areas and kitchen shall be protected with earth leakage circuit breakers ELCB. The sockets in the outside shall also be weather-proof

Receptacle and plug configurations for the specified number of poles as per code and client requirement,

Each Local Area Network (LAN) workstation telecommunication outlet will be provided with a dedicated well-defined adjacent duplex receptacle on an independent single phase (220 volt) circuit having not more than four duplex receptacles and a non-shared neutral. Circuit Loading for LAN workstation shall be calculated based on 500 VA for each outlet. The demand factor for workstation is 1.

Fax, copy equipment and laser printers will be provided with independent circuits.

1.9 Utilities Interface

This whole campus shall be connected to Saudi Electricity Company (SEC) power supply. Preliminary coordination with SEC shall be arranged during the design stage. Final and detail coordination shall be arranged by the contractor at the beginning of construction stage. The building owner shall take part in the coordination. Power supply Contract can only be signed between SEC and building owner.

2. Electrical Systems and Equipment

2.1 Normal Power Supply and Distribution

Electrical supply shall be provided from the Saudi Electricity Company SEC at 13.8 kV via a transformer substation (132/13.8 kV). A space shall be allowed for SEC at the boundary along a main street (two streets). All the issue concerning the power supply shall be closely coordinated and agreed with SEC during the design stage.

A 13.8 distribution switchgear, 13.8 kV cable network, transformers and complete low voltage distribution shall be designed as part of medical center property. The maintenance of these equipments shall be by the medical center maintenance staff (or contractor). This system will give the medical center flexibility to modify and add any building at any time without asking SEC. Usually SEC charge the cost of the transformer substation on the project.

2.2 Electrical Load Requirement

The attached spread sheet indicates the preliminary load estimation.

The loads indicated are preliminary estimation for space allocation of electrical equipment and shall be adjusted according to the actual loads when it becomes available.

2.3 Transformers and RMU

Transformers of this project shall be both oil type for chillers and external areas and dry type resin encapsulated for inside the building.

The work shall include transformers and Medium Voltage Compartment Ring main units. The RMU shall be SF6 insulated, non-extensible with two- (2) load break switches and one transformer circuit breaker. All other auxiliary component shall be included. Ratings shall be as required and indicated on the drawings.

Transformer Specifications for external oil type

Type Distribution (120º C rise minimum oil type)

Ventilation Natural cooling

Phase Three (3)

Temperature 65 deg c rise over a 50 deg c ambient

Frequency 60 hertz

Bil 95 kV

Taps Two 2-1/2% primary above and two 2-1/2 % primary below

Core Five - legged

Primary voltage 13,800V

Secondary voltage as indicated on drawings

For 380/220v system transformer shall have 400/231V at NO-LOAD

KVA ratings as required in the drawings

LV neutral fully rated; solidly grounded

Impedance's 5.75 %

Noise level shall not exceed 67 db

Winding connections Delta - Star, Vector Group DYII

Similar modified specification for dry type shall be used

2.4 Essential (Standby) Power Supply

Standby generators will be installed to provide power supplies for the essential loads in case the main power supply fails.

A generator room will be provided in a suitable location and shall be coordinated with the architect.

Diesel Engine driven generator sets shall be provided as standby power. Automatic transfer switch shall automatically start the generator.

For the medical center a complete diesel power generation plant with synchronization. The standby generation is about 60 to 70% of normal load

The following are the minimum emergency loads to be connected to standby generator:

CARDIOGRAGRAPH

ICU and CCU.

All diagnostic and treatment areas (X-ray, laboratories, etc.).

Operating Theaters.

Outpatient clinics and emergency department.

Refrigeration Equipment and selected kitchen equipment.

Fire pumps.

Utility pumps.

All exit and stair fixtures.

Communication systems.

Security system.

Selected fixtures in corridors, lobbies, offices and conference rooms.

Around 30% of the general lighting

UPS systems.

Selected HVAC equipment. (as required by HVAC)

Selected Elevators

Any other equipment recommended by the medical specialist

2.5 Building Electrical Distribution

Power supply for the building shall be split into essential and non essential loads. The essential load will be connected to the standby generators. For hospital in particular we shall use 3 load categories:

Emergency system including:

o        Critical Load

o        life Safety Loads

Essential Equipment

Standard (Nonessential Loads)

From the low voltage Switchgear room service cables (feeders) shall be run to the main loads and sub-distribution panels and to the branch circuit panels.

Bus bar trunking (busway) shall be used in the riser to reduce space requirement and increase reliability.

Inside the building cables shall be installed in metal cable tray and EMT conduit.

Wiring to final branch circuits shall run in small busway, EMT conduit.

2.6 Panel Boards and Motor Control

Main Distribution Boards (MDB), Distribution Boards (DB), power and lighting panel boards shall be circuit breaker equipped, dead front construction, complying with SASO 1609/ IEC 60439. Circuit breaker shall be molded case bolted type. Multi-pole breakers shall have common trip with single operating handle.

All distribution, power and lighting board shall be of Type Tested Assemblies (TTA) as defined in SASO 1609 / IEC 439.

Lighting and appliance branch circuit panel boards shall be circuit breaker equipped, complying with minimum short circuit and interrupting capacity of 10% more than the calculated maximum short circuit on the protected circuit and shall not be less than 10 kA. Breaker trip ratings shall be as required.

Motor control shall comply with requirements of SASO/ IEC. All items shall be for 60 Hz.

Branch circuit panel boards shall be of the circuit breaker type. Feeder, distribution, and sub-station panel boards shall be current limiting circuit breaker. A main circuit breaker or disconnect shall be provided on all panel boards when two or more panel boards are supplied from the same feeder. All panel boards shall be provided with insulated neutral terminals and equipment grounding terminals.

Supplying small single-phase loads from power and distribution panels shall be avoided. Large three phase loads shall not be fed from lighting panels. Lighting and small panel boards may be combined for small facilities, but shall generally be segregated for larger facilities.

The location of panel boards shall be coordinated with architectural drawings to assure cabinet mounting is correct for the location and wall type. Panel location shall provide for economical distribution of branch circuit conductors and minimum voltage drop.

Spare circuits and spaces in power and distribution panel boards shall be provided at 25 percent of active circuits. The spare circuits shall be included when applying demand loads for feeder, panel, and transformer sizing. For panel boards recessed in finished wall spaces, spare circuits shall be called out to be provided from a panel boards to overhead accessible areas for the spare circuits.

All electrical equipment, including switchboards, panel boards, controllers, metering cabinets, transformers and special equipment shall be housed within enclosures with the correct IP rating.

ISOLATED POWER Panel Boards:

Isolated Power panel boards shall be installed for critical medical areas and equipment like OR, ICU, CCU and any area where medical equipment are attached to the human body.

The isolated power panel boards are specially designed panel for this purpose and shall include as minimum:

Shielded low-leakage isolating transformer, specifically manufactured for the use in hospital isolated systems

Line isolating monitor (LIM)

Circuit breakers

Remote alarm indicator.

2.7 Switches, Circuit Breakers and Fuses

Safety Switches

Safety switches shall be according to IEC 60947-3. All Motor safety switches shall be rated for category AC-3 (motor duty) according to IEC 60947-3.

The switches of 60 ampere and below shall be general-purpose, with pilot light if required, and ratings as indicated on the drawings. Safety switches above 60 A shall be as follows:

IP-20 (NEMA1) general-purpose enclosure for indoor use, with metal nameplates, front cover mounted that contain switch type, catalogue number and hp rating.

IP-65 (NEMA 4X) type will be used for outdoor use.

Molded Case Circuit Breakers (MCB and MCCB)

All MCB shall be manufactured according to SASO 1349, IEC 60898 and/or IEC 60947-1 and 2.

MCCB Breakers up to 630 AMPS shall be of category A with a rated service breaking capacity (Ics) equal to the ultimate breaking capacity (Icu) - on all the operational voltage range

MCCB in the range of 100A to 250 A shall have adjustable thermal magnetic.
Bigger sizes shall have universal electronic protection units.

All MCCB bigger than 630 A shall have electronic trip unit with the following minimum functions:

Long-time protection with an adjustable current setting and time delay

Short-time protection with an adjustable pick-up and time delay

Instantaneous protection adjustable up to 15 times the rated current with an OFF position

Earth-fault protection (if required) with an adjustable pick-up and time delay

All the molded-case circuit breakers shall be current-limiting circuit breakers

The rated ultimate breaking capacity (Icu) of each molded-case circuit breaker shall be equal to at least the value of the short-circuit current (Isc) at the point of installation on the electric circuit, unless the upstream circuit breaker makes it possible to ensure coordination (as defined in Appendix A of IEC 60947-2); in this case, the coordination between the two circuit breakers shall be confirmed and guaranteed by tests.

AIR CIRCUIT BREAKERS (POWER CIRCUIT BREAKERS)

For Electrical loads bigger than 1600 A or as required Air circuit breaker shall be used.

Power circuit breakers shall comply with standards IEC 60947-1 and 2 or standards derived from the latter.

ACB shall be withdrawable

ACB shall have a microprocessor based electronic trip unit. Trip units shall allow all type of protection, metering, energy metering and communication.

Ordinary Low-Voltage Fuses

Cartridge types, one - time use and shall be according to IEC. They shall have markings, or adjacent to them an identification of the type of links to be used.

Motor Disconnect Means

Each motor shall be provided with a heavy - duty disconnection means. The rating shall be for category AC-3 (motors) as per IEC 60947-3.

2.8 Wires and Cables

Branch circuit wires shall consist of moisture and heat resistant thermoplastic (PVC), 85 Deg C, 750 V copper conductors according to SASO 55 and IEC 228. Feeders for indoor and outdoor installations shall be XLPE, 90 Deg c, 1000 v copper conductor multi-core or single-core type.

All wires 2.5 mm2 and above shall be stranded conductors. Stranding shall be circular none compacted according to IEC 228 class 2, or approved equivalent.

The wiring will be installed in a system of trunking, trays and conduits.

A separate green/yellow colored grounding conductor shall be used throughout to insure grounding continuity.

Aluminum conductors will not be used in the construction of this facility only copper conductors will be used.

Feeder circuits shall be run in cable tray, rigid conduit, intermediate metal conduit, or electrical metallic tubing except where large loads justify the use of enclosed bus bars.

Feeders shall be derated for high ambient temperature where required. General routing of main feeders shall be shown on the drawings where required for purposes of construction.

Wiring methods and materials shall be those recognized by the SASO, IEC, BS and NEC, except as modified below. All interior power, lighting, and line voltage control conductors shall be run in raceways, except where cable tray systems are used. Low voltage and temperature control wiring shall be encased in conduit where the run is exposed.

MV cables shall be 15 kV 3 cores with armor if installed direct in ground. For installation in duct-bank no armor is required.

2.9 Man-holes/Hand-holes

If required, man-holes/Han-dholes shall be of the cast-in-place type. Straight runs between manholes shall not exceed 150 meters. Shorter distances will be used when change in direction is required. Hand-holes will be mainly used for communication systems.

2.10 Earthing and Safety

The Earthing system shall be according to SASO 981, 982, 983, 984, etc. equivalent to  different parts of IEC 60364 Part 1, 4, 5, 6 and 7 (all parts)

SASO

IEC 60364-5-54 is particularly for earthing. Earthing wires shall be sized accordingly.

Earthing system shall be TN-S according to SASO 981 equivalent to IEC 60364-1

For ICU, CCU Operation Theater an isolated Power system shall be used to increase the reliability of the system

Ground cables: soft drawn, bare stranded copper wire, tinned, or insulated stranded copper wire conductor cables. The minimum cross-sectional area of protective conductor shall be according to table 54.3 of IEC 60364-5-54 and in no case smaller than 2.5 mm2

Ground rods: copper cladded steel rod or copper alloy, 19-mm diameter, furnished in 3.00-m lengths.

A separate grounding conductor will be provided for each circuit in all building lighting and power conduits.

2.11 Conduits and Raceways

Interior Raceways

Raceways for wires and cables inside the buildings shall be conduit and a system of trunking and cable tray.

All conduit runs above ceilings or inside double wall partitions shall be electrical metallic tubing (EMT). Exposed conduit inside the building (subject to mechanical damage) shall be rigid galvanized steel conduits. Rigid PVC conduits will be used when embedded in concrete.

Minimum sizes of conduits for interior installation shall be 20-mm diameter.

Electrical metallic tubing shall not be installed below grade, where subject to corrosive conditions, or where embedded in concrete.

Exterior Raceways

External power raceways shall run through services tunnel then duct bank to access the building.

Lighting raceways for exterior use shall be in rigid PVC conduits/duct banks. Raceways under traffic areas shall be rigid UPVC conduit, schedule 80, furnished in 6 meter lengths with one bell end per length, rated for 90 Deg. C cables, and encased in concrete.

Minimum sizes of conduits for exterior installation shall be 25-mm diameter.

Separate duct sections shall be provided for power and telephone systems.

Raceway shall be used if needed as per drawing.

2.12 Lighting

2.12.1 Interior Lighting System

The interior lighting of the main public area shall be emphasized to create special architectural effect and attraction. The architect shall develop the main concept of the interior (decorative) lighting

For offices and general areas; energy efficient design considerations shall include use of efficient lamps and luminaries.

The most energy efficient lamps and fixtures shall be used.

Fluorescent lamps will be cool white, energy saving types (T5) 16 mm diameter. These lamps are the most modern and energy efficient in the market.

Louvers shall energy saving aluminum louvers

Electronic Control gear (ECG) with dimmable function shall be used.

The buildings are designed by the architect to make use of the natural day lighting. This concept requires the use of some control to reduce or switch off the lighting luminaries based on the day lighting available. The energy saving comes from this control.

That is why a lighting control system like EIB (European Intelligent Bus) is recommended in connection of day light sensors, presence sensor and dimmable ECG shall be used.

Lighting fixtures will generally be rated for 220-Volt operation

2.12.2 Interior Illumination Levels

For offices, class rooms, laboratories and service areas; illumination level shall follow the recommendation of IES Illuminating Engineering Society Lighting Handbook 8th edition.

The following lighting criteria table has been selected from the tables of IES for the particular areas.

2.12.3 Street and Area Lighting

External Lighting (road and area lighting) will be coordinated with the architect and landscape design. Lighting control will be achieved by orbit timer, photoelectric cells and contactactors. Manual option shall be provided. EIB shall be used for control

3. Special Systems

3.1 Lightning Protection System

The work under this section shall consist of furnishing and installation of a complete lightning protection system for the building of the air terminal type.

Air terminal type material and components will comply with BS 6651, in accordance with published product information. The system will be provided with air termination network, bonding plates, conductors, connectors, conductor straps, fasteners, grounding plates, grounding rods, rod clamps, splices and other components required for a complete system. High conductivity annealed copper tape 20 * 3 mm with rounded edges with bases. Length as indicated on the drawings.

Conductors: High conductivity annealed bare stranded copper wires. Length and size as indicated on the drawings. Roof conductors coursed along masonry surfaces shall be secured with copper masonry fasteners. Conductors coursed on the roof deck shall be secured with adhesive cable holders spaced as shown on drawings. The download conductors shall be concealed and routed down in cavity walls or in PVC conduits concealed in concrete walls.

Ground Rods: Each down conductor shall terminate at a ground rod, which is part of the common building ground grid. Ground rods shall be 20-mm diameter (3/4"), 3.00-meter long copperbond steel rod.

3.2 Uninterruptible Power Supply (UPS)

UPS room shall be provided in the area of server and communication rooms. UPS shall be used to serve the critical hospital areas like:

Operating rooms

ICU room

CCU rooms

The UPS shall be selected with the latest technology available to reduce the harmonic distortion and improve power factor. UPS shall be On-Line double conversion including Rectifier, Battery, Inverter, Automatic bypass and maintenance bypass.

The UPS shall meet the IEC 62040-X all parts, in addition to the following minimum requirements:

Transistorized PWM IGBT/intelligent power-module converter.

Digital-signal processing (DSP) using PWM for direct-digital-control (DDC) of all UPS control and monitoring functions.

Transistorized PWM IGBT intelligent inverter for output.

UPS shall use open system communication for remote control and monitoring of all parameters. Ethernet TCP/IP shall be supported

UPS shall be sized to cover the following items:

The medical equipment requiring UPS (operating rooms, ICU, CCU)

Computer servers.

Communication servers

IP telephony server and equipment.

Communication rooms

Main security controllers

Public Address With Internal Broadcast System

Fire Alarm System

Closed Circuit Television Surveillance "CCTV" main consule

Access Control & Security (Burglar, Break glass, etc) systems

BUILDING MANAGEMENT SYSTEM "BMS"

4. Basis for Electrical Design and Calculations

4.1 General

Calculation shall be performed based on the standards and codes indicated in the section of codes and design standard.

The following standards in particular shall be observed

SASO 981, 982, 983, 984, etc. equivalent to different parts of IEC 60364 Part 1, 4, 5, 6 and 7 (all parts).

IEC 60364-5-54 is particularly for earthing. Earthing wires shall be sized accordingly.

4.2 Programs for Calculation

The following programs shall be used for calculation:

DOCwin from ABB

Excel Spreadsheet for panel board and some calculation.

Manufacturer programs for generator selection

4.3 Load estimation and calculation

All the loads in the building shall be tabulated in the panel load schedules.

The following table of loads shall be used as a guideline.

It shall be noted that all panel boards, Main Distribution Board (MDB), Distribution Board (DB), Circuit Breakers and cables shall be selected with rating to allow for 20% spare and future growth. This 20% spare shall not be shown as a load in the panels but shall be considered when sizing the cables and selecting the circuit breakers. The sizes of cables and breakers shall be selected to carry the maximum demand loads multiplied by a factor of 1.25. This allows 20% spare.

Table for Equipment Loads and Power Factors

4.4 Demand loads

Demand Factor for this building shall be estimated based on the following

Table for Demand Load Factors

B- COMUNICATION, SECURITY AND CONTROL

1- General

1.1 Introduction

This section describes the basic design guidelines that will be used in preparing the communication, security and control design and documents for this project.

A modern system for communication, security and control shall be designed according to the latest trend in communication. All the main equipment, controllers and systems shall have the capability to integrate with the other systems using open protocols and TCP/IP LAN

1.2 Scope of Work

The communication systems for this building shall consist of the following items including all the necessary raceway:

Data/Computer Cabling (Generic structured cabling system)

Telephone System

Fire Alarm System.

Public Address and Internal Broadcast System

Master Antenna Television System (MATV)

Clock System

Security System

Closed Circuit Television Surveillance System CCTV

Access control system

Vehicle control and gate barrier system.

Building Management System (BMS)

Nurse calling system integrated with paging system.  (Doctor's call system).

Digital Discussion & conference system.

Note that UPS has been included as part of the power and lighting report.

1.3 Codes and Design Standard

Fire Alarm System

The application shall be according to the (Fire Protection Requirements for buildings) agreed by the Gulf Cooperation council. The GCC requirements are based on NFPA 101 (life Safety Code) with some modification.

Detailed design shall follow the BS 5839 latest edition and/or NFPA 72 (National Fire Alarm Code) latest edition

Fire alarm shall comply with the requirement of the local branch of the general civil defense administration.

Telecommunications

Will be in accordance with ISO 11801 and TIA/EIA 568 A and according to manufacturer recommendation

The following codes will also be applied to IP-PBX equipment and characteristics:

ISO      International Organization for Standardization

ITU      International Telecommunication Union

2. Communication System

The building shall have a complete LAN system based on fiber optic and UTP CAT 6a cables using TCP/IP. All the communication system shall be based on the latest approved modern technologies available in the market.

2.1 Generic Cabling For Premises (Structured Cabling)

A complete structured cabling system shall be designed based on ISO/IEC 11801 2002 and EIA/TIA 568A, B. The system shall be universal and support telephone, data, video and others. The system shall support Ethernet as defined by IEEE 802.3 standard and shall be open to any new applications that require an ISO/IEC 11801.

Structured cabling system shall be installed, tested certified and guaranteed by an authorized supplier/contractor. The warranty shall provide performance guarantee for 20 years.

The system shall support 10 Giga speed (CAT 6A) component, and shall be configured in star configuration with full redundancy using fiber optic as back bone and UTP horizontal cable to each communication outlets

The system shall include, but not limited to:

Horizontal cabling (UTP)

Telecommunication face plates and outlets

Patch Panels

Patch Cords and connection cords

Backbone Cabling (Fiber optic)

Voice Cabling

Distribution Frames

Equipment Racks

Raceway and conduit

All the component of the structured cabling system shall meet the requirement of CAT 6a (E) as per ISO/IEC 11801 and EIA/TIA 568A, B. and shall meet the following minimum requirement:

Horizontal Cabling

The horizontal cabling shall be 4 pairs Unshielded Twisted Pairs (UTP) category 6a.

The cable shall have solid conductor of 0.55mm diameter. Cable shall be PVC insulated and twisted and shall be LSZH (low smoke Zero Halogen). Performance and twisting shall be guaranteed to meet or exceed the ISO/IEC 11801 standard

Each Telecommunication outlet shall have two cables in general

Fiber optic cables can be used for the horizontal cabling if the distances between telecommunication outlet and patch panel communication cabinet

Telecommunication Outlets (Faceplates)

As recommended by the ISO/IEC 11801 standard at least 2 RJ45 outlets per Telecommunication outlet

Telecommunication Outlet shall follow the furniture layout i.e. one telecommunication outlet for each workstation or for each 10 m2 of usable workspace where there is no recommendation or furniture layout.

Every office, clinic, patient room, class room, lab shall have a minimum of one Telecommunication outlet (one faceplate with 2 RJ45 outlets)

Special communication requirement shall follow the medical equipment liayout

Telecommunication outlets shall be provided at proper location to allow the installation of Wireless Access Point, so that users can use their laptops and wireless devices to access information from any location in the hospital

The wall-mounted faceplate shall match the wiring devices finishes and shape and it shall accept modular type RJ45 outlets (2 or 4 as required)

Patch Panels

Copper patch panels must have 19" to fit in the standard 19" cabinet, rack or bay. Patch panels must be modular, and have RJ45 connectors. A typical 1HU high patch panel shall have 24 port modular snap-in RJ45 connectors

Performance and specification shall meet or exceed CAT 6a ISO/IEC 11801

The optical fiber patch panel must have 19" to fit in the standard 19" cabinet, rack or bay. The patch panel shall support the ST or SC connector type.

All patch panels, patch cord and accessories shall be CAT 6a rated.

Backbone Cabling

The backbone cabling is used to connect distribution rooms or cabinets together. Tight-buffered multimode fiber optic cables 50/125 are usually used for backbone cabling. The cable shall support gigabit Ethernet. A minimum of 6 fibers shall be used for backbone cabling. Cable performance and distances covered shall meet or exceed the standard requirement. Cables shall have LSZH (low smoke Zero Halogen) sheathing material that does not give off toxic fumes in case of fire.

Cables in duct bank; outside the building; shall be dry construction i.e. with no gel content. The jacket material shall be waterproof LSZH

Single mode fiber optic cables shall be used to cover long distances in the

Voice Cabling

To connect the PABX to the different floor distributor, the voice cabling between the PABX, MDF and floor distributor shall be multi-pair cables.

Raceway

The generic structured cabling system shall be installed using a system of hot dip galvanized cable tray and light duty metallic conduit (EMT) or other accepted conduit system.

2.2 Software and server

The entire active component like switches, routers, servers, computer and software are not in the scope of work of this contract.

The scope covers only the infra-structure for the DATA networks as defined above and as per standard ISO/IEC 11801 2002 and EIA/TIA 568A, B

2.3 TELEPHONE SYSTEM (IP-PBX)

A complete Private Automatic Branch Exchange (IP-PBX) shall be designed for this building. The IP-PBX shall be microprocessor based modular type. PABX shall allow the use of IP-telephones, SIP phones, Digital ISDN and analogue lines.

The PABX system shall include, but not limited to:

IP-PBX Switching Equipment

Operator's Console

Main Distribution Frame (MDF)

Power Supply and Backup Power

Cables and Raceways up to MDF

Local Operation and Maintenance (O&M) Port with TTY, Remote O&M Port with Dial-up Modem

Software package

Auto Attendant and Voice Messaging System

Power plant and Test Equipment

Special Tools

The capacity of the PABX shall cover the entire telephone requirement as in the layout plan plus 20% spare for future expansions.

Number of external line for the building shall be estimated as 15% of the PBX size to cover the entire requirement.

It should be noted the telephone wiring from the communication room to the each desktop will be the same CAT6 cables as described in the structure cabling.

Back bone cabling for the telephone from the PABX to each floor can be multi core CAT3 telephone cables. This system allows the use of standard type of telephones and at the same time allows future upgrade to IP-phones and complete IP telephony solution

2.4 Master Antenna Television Systems (MATV)

Inside the building, a completely wired MATV system will be provided. The MATV shall include, but not limited to, the following component:

All amplifiers and splitters as required

All the coaxial cabling

TV outlets in selected location

The HEAD-END station shall be designed for around 12 channels and shall allow for expansion by adding additional channel modules

The location for the TV outlets shall include; patient rooms, waiting areas, managers and directors offices, rest areas and any other location required by client.

2.5 Public Address

The PA shall provide paging, emergency broadcast, and praying announcement. A remote microphone shall be used for emergency broadcasts on group or all speaker systems. Emergency broadcasts shall have priority over other broadcasts.

The PA shall be combined with the voice evacuation system without violating the code.

The system will be provided in corridors and waiting areas, with the main control panel installed within the security room.

The system shall consist of, but not limited to, the following:

Power amplifier unit

Paging microphone

Monitor unit

Audio mixer

Dynamic microphone

Speaker selector unit

Remote control unit

Cassette deck

Radio tuner

Power control unit

Terminal board

Speakers

Connecting wiring, cabinet, ventilating fans unit, and accessories.

Equipment and components shall conform to the requirements of the applicable standard. All electronic components shall comply with the appropriate standards of manufacturer country. Electronic components shall be of types and ratings commonly available from stock of established commercial distributors.

The system will have the following features:

The system will allow for zoning and general announcement.

Ability to be connected to Telephone System.

The ability to connect several microphones to access for general address or zonal address.

2.6 Clock System

The work under this section shall consist of furnishing and installation of a complete central clock system.

Clocks will be installed as required in lobbies, waiting areas, rest rooms and as required by the client.

The system shall consist of, but not limited to, the following

Master Timer Unit: The master clock shall have the capability to receive the timing signals through different interfaces including GPS receiver and TCP/ IP. The master clock shall incorporate an internal single generator, which shall set the master timer to, the correct time with back-up battery.

Slave Clocks shall be distributed at each lecture hall, lobby, waiting area and as required by client

Surface-mounted with analogue indication type with a radius around 30 cm

2.7 Fire Alarm System

Automatic fire detection is required by Civil Defense Department recommendation. The system shall be as following:

The application shall be according to the (Fire Protection Requirements for buildings) agreed by the Gulf Cooperation council. The GCC requirements are based on NFPA 101 (life Safety Code) with some modification.

Detailed design shall follow the BS 5839 latest edition and/or NFPA 72 (National Fire Alarm Code) latest edition

Fire alarm shall comply with the requirement of the local branch of the general civil defense administration.

A complete fire alarm system will be provided complying with BS 5839. This system will be of the Analogue Soft Addressable Intelligent Type. System shall provide individual address of analog soft alarm initiating devices and two alarm levels (zone alarm & general alarm) of audible alarm. Alarms shall be initiated from sprinkler system, analogue multi / individual optical smoke / heat sensors and manual stations near exits with maximum spacing of 30 meters. Alarms shall be sounded through electronic sounders.

The system will consist of fire alarm control panel, mimic panels, repeat panel, interface units (transponders), smoke sensor, heat sensors, beam sensor, multi sensors, electronic addressable sounders, sealed lead acid batteries and battery charger.

Fire alarm system will be linked with TCP/IP network to other Fire alarm panel and to central workstation.

Combined smoke and heat smoke detectors will be installed in all general habitable rooms. Other type of detectors shall be selected for rooms with special application

Cables for fire alarm system will be as recommended by manufacturer of the system.

Provision shall be made for alarm indication to remote point via telephone network

The system will be connected to corresponding fire protection or sprinkler systems

Provision will be made to stop some or all HVAC supply fans in the event of an alarm (refer to HVAC drawings) for respective zone only.

A master annunciator will be located in the security office to indicate from which area an alarm originates.

VOICE Evacuation system shall be designed for the fire alarm system. It shall be combined with the public address system to reduce the cost. The system shall be designed as voice evacuation first as per code and then it can be used as a public address system.

System shall have the ability to integrate with other security system using open protocol and TCP/IP LAN to make one integrated system

3. Security Systems

3.1 Closed Circuit Television Surveillance (CCTV

A modern Digital CCTV system shall be installed for this building

The Digital Video Recorder (DVR) of the building shall record the cameras based on program and events.

The following areas shall be monitored:

Main entrances of buildings

Lobbies and elevator lobbies

Any special secure areas

Car parking areas entrance and exits

Any other areas requested by client

The system shall consist of, but not limited to, the following

Camera

The camera specified here shall be designed to meet needs of industrial applications. Two types of cameras for outside and inside shall be specified.

The outside camera shall be housed in dust tight enclosure with removable covers. The lens shall be auto iris totally enclosed within the housing and shall have a shatter proof front window.

Camera shall have 1/3 CCD with digital signal processor (DSP)

Camera shall have minimum resolution of 480 TV lines

Video Monitor

The monitors shall be racks mounted design. It shall be fully solid state except for the cathode ray tube; controls shall include brightness, contrast, vertical and horizontal hold.

Digital Video Recorder (DVR)

The digital video recorders (DVR) shall be software based and shall use open system architecture. It shall use industry standard PC technology with WINDOWOS NT operating system (Industrial Server).

The DVR shall support 2 monitors and a control monitor

The DVR HARD DISK shall have a capacity sufficient to record all CAMERAS at standard recording rate and sequence for 3 months.

Cables and Wires

Coaxial shielded copper cables running in 25-mm conduit between equipment.

3.2 Access Control System

The high security areas shall have secure doors with electronic card reader to limit the access to theses areas only for designated personnel.

The Access control system shall include, but not limited to, the following:

o        Main Access control panel

o        Door card readers

o        Proximity cards

o        Panic button

o        All necessary software

o        Wiring and raceways

All the access control system shall be controlled and monitored from a master control station and shall be integrated with other security system (CCTV).

System shall have the ability to integrate with other security system using open protocol and TCP/IP LAN to make one integrated system

4. Control

4.1 Building Management System (BMS

A BMS system is needed to control and monitor the AIRCONDITION A/C equipment and other equipment

The work consists of furnishing and installation of a building management system to control and monitor electrical and mechanical equipment.

The BMS will carry out automatic control, monitoring and reporting functions.

Installation would include all communication equipment's, cabling, etc. as necessary to provide these functions.

BMS shall use open protocol, standard based protocols like LONWORKS or BACnet

Following equipment shall be fully controlled by BMS:

All air-conditioning units (Chillers and pumps

Air handling units AHU.

Motor drives for HVAC equipment...

Following equipment shall be fully monitored by BMS and integrated with the BMS:

Standby generator.

LV switchgear.

All mechanical equipment's according to mechanical drawings

Some panel boards.

Water equipment including level indication, pumps alarms shall be connected to BMS for control and monitoring

Fire pumps

UPS

Security system including Fire Alarm, CCTV, Access control

5. Nurse Call System

A complete computerized nurse call system shall be designed for this project. The system shall fully computerized and microprocessor-controlled which utilize address-coded transmission in time division multiplexing mode

The software allows individual flexibility for zoning and sub zoning, adapting to any change in the application.

Calls and presences can be displayed at the operation station, in corridors, in duty rooms and patient room. With the speech option the call can be answered from any one of these points.

Operating the presence push button results in cancellation of the call within the room, Activating of the call transfer and preparation of an emergency call. Existing calls from other rooms will be transferred to this room.

System with a speech facility allows communication from room to room or between duty room and patient.

The computerized nurse call system can be operated in a centralized, decentralized or combined, according to requirements

The system uses a single Six core cable for power supply, speech and data lines.

The system structure

The computerized Nurse call system consists of 3 Components :

Nurse call Server

The server provides the interface between Nurse Call Control unit and the operating processors. It manages the existing calls in the system and transfers them to the processor. An auxiliary database enables the management of configuration data such as room number and patient specific information.

Nurse call Control Unit

The Nurse Call control Unit is the main control unit. It is built as a muti processor unit and comprises of a micro- processor, and audio adapter card and a communication processor unit.

The room Equipments

The Information in the Nurse Call system e.g. patient calls, can be answered in the rooms with the help of various system units. For example room terminals with display show pending calls in order of priority

The connection board for the room terminals, electronic elements and the electronic module serves as a room distribution board and enables simple of beds and other fittings in the room

Nurse Call system with intercommunication capability offers the option of installing operating units with speech facility.

The Nurses station and duty rooms can be equipped with a master station in addition to displaying calls and presences, it also permits zone linking when coupled with the speech facility the master station can be used to make general address calls and directly contacts rooms or beds.

External equipment interfacing

The call system can be extended by adding equipment via interface as Doctor paging system.

Paging system  (doctor's call system)

a complete paging system ( doctor's call system ) will be designed . A vhf paging system including :

Paging encoder.

Paging receiver.

Paging transmitter.

Paging antenna.

All other necessary accessories complete as specified and shown on the drawings.

The system shall be suitable for operating within temperature range of - 10 degrees to + 55 degrees and at a relative humidity up to 95 %. The system shall be fully compatible with the existing system in the project. The contractor will be responsible for the investigation and extension of the system in total. The system shall be able to cover the city area by radio transmission.

Features

Doctor's call system shall be connected to the telephone network allowing a paging call to be made from any telephone extension with the project premises to any receiver within the project boundary .

Paging encoder

The paging encoder shall have following characteristics as minimum:

Shall have system capacity of 200 receivers with a provision for increasing .

A two tone sequential call format shall be adopted.

Shall have five call codes, including one designated for group alert calls.

Paging receiver

The paging receiver shall be alphanumeric type .  The receiver hall have a variable volume control .

Paging transmitter

The transmitter shall be rated for continuous operational duty in the temperature range from -10 degrees to + 55 degrees and at a relative humidity up to 95% . The transmitter output level impedance shall be 50 ohms resistive . The frequency of the un modulated carrier shall be within +or- 0.0002% of the nominal frequency.

Paging antenna.

Paging antenna shall have the following characteristics:

Frequency range: 30 to 40 MHz (subject to confirmation by local authorities).

Input impedance:           50 ohms.

power rating:                 20 watts (minimum)

polarization:                   vertical

gain:                             6 db

half power beam width : 20 degrees (vertical)

6. Digital Discussion & Conference System.

The conference system will be designed for managing the various speeches made in conference and convention settings. The system shall include a "voting" function which provides a fast and simple means of voting on any issue being discussed.

It provides flexible management facility for all types of conferences (from small informal gathering to international multi- lingual conferences) and large number of delegates.

Digital signal processing and transmission data will be via simple network system. (Twin - coaxial cable that carries 16 channel for interpretation language and 10 channels for data and messages ).

The system can be expanded by adding more contribution equipments and introducing PC control with the Software modules.

Contribution equipments

That term describe the units via which participants can contribute to conference.

Participants can access facility to :

Listen, Speak, Register a request to speak, Receive screen message, Hold conversation with other participant via intercom and takes a part in electronic Voting and receive simultaneous interpretation if required.

The contribution unit is equipped with microphone with On/ Off button, Loud speaker, Voting keys and LED status indicator and language channel selector as required.

Chairman unit have microphone priority system that temporarily mutes the active delegate microphones. And the unit has LCD Screen which display delegate information , Voting time , Public and personal message

Central Control equipment ( CCU )

Forms the heart of the system and can operate Stand-alone to provide automatic conference control or be accessed by an operator when more extensive management is required.

It controls all the delegates and chairman units where it offer basic microphone management, simultaneous Voting, Interpretation facilities as well as digital audio and data control.

PC Control

The user can access the family of software modules each with specific function in controlling and monitoring the conference.

Software Module

Covers virtually the conference requirements range :

- Microphone Management Control

- Parliamentary Voting

- Muti voting

- Delegate database

- Text/Status display

- Attendance registration

- Video display

- Camera Control

-_Open Interface.

Information Distribution Equipment

The system supports a wide rage of display media starting from video LCD attached to the contribution units to Video equipments, TVs receivers and CRT video projectors.

The system allows high quality display of any live or recorded video material, or Computer - generated graphics and text.

Simultaneous Interpretation and language distribution

Interpretation facilities are fully integrated to the basic system, Build- in microprocessor is manually programmed to allocate language channels,

Each interpreter desk has an out-put for the normal (primary) language and another for alternative language.

Remote interpretation can be carried out by using analog audio Input/Output module and telephone basic lines (Conventional Telephone lines)