Basic electrical requirment KSA

7/27/2019 Basic electrical requirment KSA

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BASIC ELECTRICAL REQUIREMENTS 16010 - 1

SECTION 16010

BASIC ELECTRICAL REQUIREMENTS

PART 1 GENERAL

1.01 GENERAL REQUIREMENTS

A. All general provisions contained herein or within any other section of the Specificationsshall be fully applicable to each and every other section.

B. Works on all the Installation shall be carried out in a neat, efficient and workmanlikemanner, assuring satisfactory/proper operation, maintenance and repair. The work shall be

in accordance with the requirements of these Specifications, and shall fulfill their true intentand meaning. No deviations from these Specifications and/or Drawings shall be madewithout written approval of the Engineer.

C. These Specifications and associated drawings form a composite set of documents, intendedfor the selection and installation of equipment having the general and specific characteristicsas detailed.

D. Unless otherwise specifically stated, the installation shall be left complete, tested and ready

for operation in all respects and fully integrated and coordinated with all other construction.

E. The Contractor shall submit proof, if requested by the Engineer that the materials,appliances, equipment or devices that he furnishes and installs under this contract, meet the

requirements of SASO, NEC and NFPA as regards to fire and casualty hazards.

1.02 SCOPE OF WORK

A. The work under this division of the Specifications shall include furnishing all labour,materials, equipment and services to install the complete electrical system, putting intooperation, tested and commissioned as shown on the Drawings and specified herein. Thework includes, but is not limited to, the following principal systems and equipment:

1. Incoming power supply from Electricity Supply Authority.(SEC)

2. Medium Voltage Power Distribution System including MV Switchgear ,RMU, MVCables, Power Transformers, DC Controls, Battery Charger Unit, protective relays andaccessories.

3. Low Voltage Power Distribution System including LV distribution boards, LV cables,

panel boards, etc.

4. Emergency Power Generation and Distribution System including standby generator(s),ATS, switchgears and all accessories.

5. Electrical Installations serving all mechanical plants (HVAC & Plumbing) including allLV cabling, trays, disconnect switches and connections to equipment.


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7. Electrical Installations serving all special systems and equipment provided under otherdivisions of the specifications such as elevators, kitchen/laundry equipment, trashcompactors, arm barriers, water features, swimming pool, sports equipment and otherelectric-operated equipment.

8. All kinds of electrical raceways, boxes and fittings.

9. All kinds of wiring devices, dimmers, disconnect switches, starters, electric meters, etc.

10. Interior, exterior, emergency, exit, street, flood, faade and other special lighting.

11. Lightning protection system.

12. Earthing system.

13. All low current systems as detailed in the tender documents.

1.03 ELECTRICAL SUPPLY

A. The Medium Voltage Electrical Power Supply from SEC primary substation shall be 3phase, 13.8 kV Delta, 60 Hertz.

B. The Low Voltage Electrical Power Supply and Distribution System shall be 3 phase, 4 wire,60 Hertz earthed neutral system. The voltage rating shall be 380/220 Volts as shown on thedrawings.

1.04 LIGHTING REQUIREMENTS

A. Lighting

A. Lighting levels will be in accordance with appropriate standards and agreed upon with theSupervising Engineer. Low energy lighting will be the preferred source in all areas. Based onstandards set forth by the Illumination Engineering Society (IES), the following maintainedillumination levels are recommended :

Area Illumination Level (Lux)

Offices 500 Electrical, Telephone and Mechanical Rooms 300 Elevator Equipment Rooms 300 Emergency Egress 20 Control Rooms 400 Store and Cleaning Rooms 100 Cafe 300 Lobbies/Public Areas 150 Toilets 150 Stairways, Corridors and Service Areas 150Lighting points with properly chosen lighting fixtures will be provided with the necessary controldevices (local and/or via EIB system which is energy saving system in addition to lighting controlsystem).1.05 EARTHING REQUIREMENTS

A. The earthing system shall in all respects comply with the following :


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1. The National Electrical Code (NEC)NFPA 70.2. Any special requirements of the Statutory Electricity Supply Authority (SEC).3. The International Electrotechnical Commission (IEC).4. Any special requirements of separate earthing for low current systems as per relevant

standards or manufacturers recommendations.

5. Any requirements stated within the Specifications.6. The IEE Wiring Regulations, 16th Edition (1996).

B. The earthing system shall take the form of (TN-C) system for the distribution systems andTN-S system in all buildings. The Contractor must ensure that the installation of earthing

system complies with the requirements as laid down in section Earthing Systemcontained elsewhere in the Specifications.

C. The earthing conductor (the final conductor by which the connection to the selected means

of earthing is made) shall be of copper construction and comply with the requirements ofNEC article 250 (NFPA-70).

D. All extraneous conductive parts of any equipment or building installation shall be protectedby equipotential bonding in accordance with the requirements of NEC article 250 (NFPA-70).

1.06 LOW CURRENT & SPECIAL SYSTEMS REQUIREMENTS

A. Assign a specialist supplier/designer for all low current and special systems.

B. Specialist suppliers shall verify the design and submit shop drawings and materials based on

the requirements of the construction documents and related international standards.

C The shop drawings and as-built drawings shall be stamped by the suppliers.

D The suppliers shall support their submittals with catalogues and satisfactory calculations.

E Bear the cost of any extra item found necessary to have a properly functional system.

1.07 CO-ORDINATION

A The contractor shall be solely responsible for the proper co-ordination of all phases of theWork and timely delivery to the site of all equipment and materials for proper execution ofthe Work.

B. Co-ordinate the Work with all or any other disciplines to ensure proper phasing andcontinuity of the Works. If it becomes necessary to remake any part of these Works or that

of any other discipline or trade as a result of poor or badly timed co-ordination, then allcosts associated with remaking those Works will be borne by the Contractor.

C. Co-ordinate with all supply Undertakings and Authorities and shall include for attendancealong with all costs involved in re-directing existing services.

D. Take into consideration all statutory and local requirements issued by the Electricity Supply

Authority (SEC), Local Authority, Central Government, Broadcasting Authority, Telephoneand Telecommunications Authorities along with any other requirements to be considered forthe correct and legal operation of the Electrical and Telecommunication Installation or


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equipment connected to the Installation as part of this Contract. Pay all costs due to therequirements of any authority except for connection fees.

E. The Contractor shall be responsible for the co-ordination with all Electrical & Mechanicalsystems suppliers and shall include in his cost all the electrical requirements (even if they

were not mentioned in the BOQ or drawings) to have a fully functional system as specifiedand as recommended by the manufacturer or the codes. This is also applicable to allancillary systems & equipment such as : Security, Elevators, Escalators, Compactors,Kitchen & Laundry Equipment, Audio-Visual, and all low current systems.

1.08 CLIMATE CONDITIONS

A. External to building and in non-air conditioned spaces, all apparatus shall be rated for an

ambient temperature maximum of 55oC, minimum of 0

oC, generally dusty desert

conditions, a maximum humidity of 100% rh, and an elevation of 100 meters above sealevel.

B. In air conditioned buildings, all apparatus shall be rated for ambient temperature of 45 Cmaximum, minimum of 0 C and a maximum humidity of 90% rh.

C. When equipment is installed in direct sunlight, it shall either be shielded from directradiation or suitably rated for additional solar gains. Cables shall always be shielded fromdirect sunlight.

D. All apparatus shall be rated for continuous service twenty four hours a day, seven days aweek throughout its normal rated life, except for necessary routine maintenance.

E. All equipment shall be rated for very harsh and corrosive environmental conditions persistat project site. All buried installations shall be suitable for aggressive and salty soil

conditions.

1.09 ACCESSIBILITY

A. All works within the project and particularly above suspended ceilings or inside vertical

shafts shall be so installed as to be accessible for operation, maintenance and repair.Deviations from the drawings may be made to accomplish this, but no change shall be madewithout written approval from the Engineer. Locations of access doors and panels shall beapproved by the Engineer before installation work is commenced.

1.10 STORAGE OF MATERIALS AND EQUIPMENT

A. Comply with Section 01600.

B. All material and equipment, fixed or unfixed, shall be protected against corrosion,deterioration and ingress of foreign matter and moisture.

C. All material and equipment shall be kept clear of the floor or ground by means of woodenbearers and shall be protected against the weather with durable waterproof wrapping and

other appropriate means.

D. The Contractor shall be liable for any loss due to delivery, storage or site security problems.


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1.11 PREVENTION OF NOISE AND VIBRATION

A. Provision shall be made to minimize noise and vibration. However, different manufacturer'sequipment will have varying sound and vibration characteristics. The contractor shall beresponsible for ensuring that equipment installed does not transmit unnecessary noise or

vibration.

B All equipment installed in plant rooms and outside areas shall not be audible in the occupiedareas.

C. Any vibration isolators, isolating bases, flexible connections, silencers, other acoustictreatment or anti-vibration precautions necessary shall be included in the rates for theequipment.

D. In individual cases, the suspension shall ensure that the natural frequency of the vibratorysystem in the vertical direction is not more than 1/3 of the exciter frequency and neverexceeds 25 Hz.

E. Submit proof of the selected noise proofing measures to the Engineer before commencementof work.

F. Submit to the Engineer for information the noise level generation by the plant selected sothat structural soundproofing measures can be evaluated. This means either data on the

acoustic capacity level in relation to frequency, or the sound pressure level measured at 1metre from the plant at octave median frequencies from 63 Hz to 4000 Hz. Details of thespatial and operational conditions shall also be given.

G. All costs of noise sound level measurements and any repeat measurements, necessary ifacoustic requirements are not met, shall be allowed for by the Contractor.

H. Coordinate and comply with the requirements of noise control as applicable and as given inSection 15513HVAC Noise Control.

1.12 GUARDS

A. All moving parts of machinery shall be protected by strong guards to adequately protect all

personnel working on or in the vicinity of equipment. The guards shall be constructed insuch a manner that the movement of drive belts and rotation of shafts may be readilyobserved without removal of the guard.

B. All 'live' parts of electrical equipment shall be protected in such a way to adequately protect

all personnel working on or in the vicinity of equipment from injury.

C. Wherever possible, all protective guards shall be supplied by the Equipment Manufacturer.All guards shall be strongly attached to equipment and shall be designed to be easilyremoved for access, servicing, adjustment and maintenance.

1.13 SIGNS AND NOTICES

A. All signs and notices shall be in Arabic and English with the Arabic version being above or

to the right of the English version.

B. A schedule of all signs and notices with proposed Arabic translations shall be approved by

the Engineer prior to manufacture.


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1.14 GOVERNING CONDITIONS

A. The entire Electrical Installation shall in all respects comply with the requirements of thelatest editions of the following Standards with any current additions and amendments :

1. Saudi Arabian Standards Organization (SASO).2. Saudi Electric Co. (SEC).3. Saudi Telecom Co. (STC).4. National Electrical Code (NEC)NFPA 70.5. National Fire Protection Association (NFPA).6. American National Standards Institute (ANSI).7. National Electrical Manufacturers Association (NEMA).8. Underwriters Laboratories (UL).9. Illumination Engineering Society (IES).10.American Society for Testing and Materials (ASTM).11. Institute of Electrical and Electronics Engineers (IEEE).12. International Organization of Standardization (ISO).13.

European Committee for Electrical Standardization (CENELEC).

14. International Telegraph and Telephone Consultive committee (CCITT).15. International Electrotechnical Commission (IEC).16.Requirements for Electrical Installations, IEE Wiring Regulation (BS 7671).17.British Standards (BS).18. Insulation Power Cable Engineers Association (IPCEA).19.

Requirements or Standards stated elsewhere within the Specifications.

1.15 MOUNTING HEIGHTS

A. Unless otherwise stated on the Drawings, the following shall be mounting heights ofequipment above finished floor level subject to full coordination with architectural detailsand other disciplines/equipment. Any discrepancy found between these heights and otherdetails/disciplines shall be brought to the notice of the Engineer for clarification and final

decision.

Panel board 1800 mm (Top of panel above FFL)Isolating switch 1350 mm

Light switch 1350 mm (100 mm from door frame, horizontally)Dimmer switch 1350 mm

Push button station 1350 mm


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Wall mounted telephone/intercom 1350 mmFire alarm manual call point 1350 mmFire alarm sounder 2100 mmFire alarm panel 1800 mm (Top of panel above FFL)Power outlet 300 mm

Data/Telephone outlet 300 mmTV/Radio outlet 300 mmWall mounted speaker 2100 mm

B. Where accessories with varying mounting heights (e.g. light switch and socket outlet) areshown in approximately the same location, their center lines shall be aligned vertically.

C. Where wall mounted accessories are shown adjacent to each other they shall be mounted withtheir wall plates separated by 50 mm.

1.16 LABEL AND IDENTIFICATION

A. Each item of the Electrical Installation including electrical switchgear, control gear,equipment, devices, etc. shall be fitted with a non-corrodible label clearly indicating itsfunction giving at least the following information:

1. Manufacturers name.

2. Country of origin.

3. Type / model number or code.

4. Rated voltage, current and frequency (as applicable).

5. Short circuit breaking capacity with time.

6. Compliance mark of the international standard(s).

B. Prior to final testing, confirm that all labeling is intact over the whole site and that all cables

have been fitted with circuit markers. The 13,800 volts cables shall be clearly labeled"DANGER High Voltage" every two meters of their exposed length.

C. All conductors shall have their outer covering coloured to suit the phase to which they areconnected.

D. An instruction notice giving details of first aid treatment for electric shock shall be

positioned in an approved position in each switchroom. Manufacturer's or Contractor'snames or trademarks shall not be exhibited anywhere through the installation without theprior approval and permission of the Engineer with exception that the Contractor's name and

address may be fixed in an approved position on the main incoming switchgear.

E. All labels shall be in English and Arabic.

1.17 VERMIN PROOFING

A. All items of electrical equipment shall be adequately vermin proofed.

B. Where cables enter or leave the bottoms of switchboards, or pass through pipe ducts, they

shall be sealed by the use of hard wood plugs treated with vermin repellent and surroundedby mastic sealant.


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C. All spare pipe ducts shall be similarly sealed by the use of solid hard wood plugs.

D. Alternative methods of vermin sealing will be accepted, but the written comments of theEngineer must be obtained prior to installation.

1.18 FIRE AND SAFETY PRECAUTIONS

A. The whole of the works shall be carried out with care and so arranged as to minimize the

risk of fire and the extent of damage resulting from any outbreak of fire.

1.19 POWER SHUT DOWN PROCEDURES

A. During course of construction there might arise a situation when a power outage or shutdown of an existing facility will be required to facilitate power connection of a new

installation with the existing facility in operation, or power connection between differentphases of a new construction. For such situations or any other situation which require powershut down of an existing facility under operation, submit a work plan for approval to the

Engineer, indicating therein the temporary arrangements he shall make to maintain thecontinuity of power supply to the existing facility.

B. The activities of the work plan shall be scheduled in such a way to give minimum

inconvenience to the users or occupants of the existing facility (e.g. shut down duringholiday or after working hours) and in proper coordination with all concerned authorities.The work plan shall include, but not limited to the following:

1. List of activities prior to power shut down.

2. List of various authorities to be coordinated prior to power shut down.

3. Sequence of various activities for shut down of power supply.

4. Time duration of each activity.

5. Shut down duration for various activities.

6. Alternate power supply arrangement to maintain continuity of power to the existingfacility.

7. Reliability of alternate power supply arrangement.

8. Step-wise sequence of activities for restoration of power supply.

C. The cost for the provision of activities and other interim arrangements for the continuity ofpower supply to the existing facility during power shut down procedures shall be deemed tobe included in the total price of the tender.

1.20 PENALTY FOR DAMAGE TO EXISTING UTILITIES

A. Study the location of all the existing utilities and any other facilities, and perform the Workso as not to damage them. In the event that any of such facilities are damaged by the

Contractor, the same shall be immediately repaired by the Contractor at his cost andresponsibility.

B. In the event that the Contractor damages the existing utilities or facilities listed below, theContractor shall pay to the Client, in addition to the repair costs, an amount specified below:


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1. Power Cable, Control Cable : An amount equal to one hundred percentand Instrument Cable (100%) of the actual repair costs.

2. Telephone Cable : An amount equal to one hundred percent(100%) of the actual repair costs.

3. Fresh Water Line : An amount equal to one hundred percent

(100%) of the actual repair costs.

4. Sewer Line : An amount equal to one hundred percent(100%) of the actual repair costs.

1.21 SHORT CIRCUIT AND PROTECTION STUDY

A. Obtain the services of the major Electrical Equipment manufacturer to provide a completecomputerized study of fault current and coordination of relays, fuses, circuit breakers, and all

other protective devices. The Contractor shall coordinate with Electricity Supply Authority(SEC) to include protection settings and fault levels of SEC feeders and circuit breakers in thestudy.

B. The study shall include all feeders at medium voltage and low voltage system.

C. The Contractor shall obtain all data, characteristic curves and all necessary information fromall other trades in connection with his work to provide complete study for the system.

D. The study shall include, but not limited to, the following:

1. Fault current available at each major equipment bus.

2. A tabulation of all protective relay and circuit breaker trip settings and recommendedfuse sizes and types.

3. Transformer damage curves in accordance with manufacturer recommendations.

4. Motor starting profile for largest motor in each control center.

5. A complete set of time-current coordination curves on logarithmic scales sheets.

E. The short circuit and protection study shall be bound in a standard A4 size report. The finalselection and settings of all protective devices shall be based on this study. The completestudy shall be approved by the Engineer. Protective devices shall be adjusted, tested, and

calibrated in the field prior to energizing the equipment per the settings listed in the study.

1.22 SPARES AND CONSUMABLES

A. Provide an unpriced list of spares and consumables to manufacturers recommendation for 1years operation for every item of plant and system at the time of tendering.

PART 2 PRODUCTS

Not used.


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PART 3 EXECUTION

Not used.

END OF SECTION 16010

Basic electrical requirment KSA

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