PROJECT: MEP
MODIFICATION WORKS
CLIENT:
MAIN CONTRACTOR:
MEP CONTRACTOR: NEC CONTRACTING
DOCUMENT
TITLE
METHOD
STATEMENT FOR ELECTRICAL/ELV WORKS
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APPROVED BY: |
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AKNOWLEDGED BY: |
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REASONS
FOR REVISION: |
FOR APPROVAL |
REVIEWED BY: |
Projects
Manager |
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REV.
NO.: |
0 |
PREPARED BY: |
Project
Engr. |
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DOCUMENT
NUMBER: |
DATE: 05-06-2023 |
TOTAL
PAGES: 61 |
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TABLE OF
CONTENTS
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CONTENTS |
PAGE
NO. |
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Tittle
Page |
1 |
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Table
of Contents |
1 |
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1.0 |
Purpose |
3 |
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2.0 |
Scope
of Works |
3 |
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3.0 |
Definitions
& Abbreviations |
4 |
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4.0 |
Equipment
Delivery, Storage & Handling |
5 |
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4.1 |
Material
Handling |
5 |
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4.2 |
Material
Storage
Area |
5 |
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5.0 |
Precautions
& Safety Program |
6 |
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5.1 |
Coordination
of
Works |
6 |
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5.2 |
Permit
Requirements |
7 |
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5.3 |
Communication
on Site |
7 |
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5.4 |
Measuring
Equipment to be
Used |
7 |
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5.4 |
Safety |
7 |
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6.0 |
References |
8 |
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7.0 |
Work
Methodology |
8 |
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7.1 |
Material
Submittal
Preparation |
8 |
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7.2 |
Inspection
of material and tools
deliverables |
9 |
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8.0 |
Activities |
9 |
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8.1 |
Dismantling
the existing
MEP |
9 |
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8.2 |
Containment
works |
9-13 |
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8.3 |
Cable
pulling works |
14-18 |
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8.4 |
Light
installation works |
19 |
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8.5 |
Small power
installation works |
20 |
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8.6 |
Isolator
installation works |
21 |
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8.7 |
Panel
installation works |
22-28 |
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8.8 |
Audio Visual
speaker installation works |
28-33 |
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8.9 |
Fire alarm
installation works |
34-38 |
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8.10 |
ELV/data
installation works |
38-49 |
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8.11 |
CCTV Camera
installation works |
50-58 |
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9.0 |
Documentation |
58 |
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9.1 |
System
Operation and Maintenance
Manual |
58 |
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10.0 |
Attachments |
59 |
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1.0 PURPOSE:
This method statement is prepared to ensure that the
installation, testing and commissioning of ELECTRICAL/ELV system is executed
safely and in accordance with the contract requirements. In addition, to ensure
that the testing procedure will be in a systematic manner, this will be
recorded in accordance to the procedures stated herein.
The objectives of the installation, testing and commissioning are:
a. To verify proper installation of Electrical/ELV system.
b. To verify the performance of the
electrical/ELV system as per the loads, meeting with the specified design
intent through a series of tests and adjustments.
2.0 SCOPE OF WORKS:
2.1 Electrical works as per below description:
1. Modification of existing DB.
2. Supply and installation of cables and
wires.
3. Removal of existing light fixtures and
re-installation of light fittings.
4. Supply and installation of wiring
devices (PVC white finish).
5. Dismantling and re installation of
existing speakers.
6. Supply and installation of additional
Fire Alarm devices.
7. Supply and installation of 3 nos. of
CCTV cameras including configuration of existing system.
8. Relocation of 5 nos. TV points as per
new arrangement.
9. Integration of new installations to
the existing BMS system.
10. Testing and commissioning of electrical works by NEC
Contracting.
This procedure shall be applied to the inspection, method and criteria for installation work carried out by the electrical department.
3.0 DEFINITIONS AND ABBREVATIONS:
Client: Mr.
Main Contractor:
Sub-Contractor:
Cold work permit - A document issued for the performance of work where a source of ignition cannot be created. This includes but is not limited to: Drilling, bolting and unbolting, Bending, Threading during the GI ducts / chilled water piping or equipment installation works.
Hot work permit - A document issued for the performance of work where heat or Sparks may be generated, making it possible to ignite flammable liquids, vapors, gas or other combustible materials. This includes but not limited to: burning, welding, grinding, chipping, grit-blasting, use of electrical equipment or internal combustion engines.
May - The word ‘may’ is to be understood as indicating a possible course of action.
Restricted Area - Area over which control is exercised for all movement and operations. Entry is granted only to those people is possession of an official issued pass.
Shall - The word ‘shall’ is to be understood as mandatory
Should - The word ‘should’ is to be understood as strongly recommended.
Work Permit – It’s a formal written statement used to
control certain types of work which are identified as potentially hazardous.
The permit must be signed by a SB / SE authorized person, provides that the
prescribed works, in the manner stated, can be carried out by the holder.
4.0 EQUIPMENT DELIVERY, STORAGE & HANDLING
Deliver, store and handle products using means and methods that will prevent damage, deterioration and comply with manufacturer's written instructions.
Delivered products to Project site in an undamaged condition and in manufacture's original sealed container or other packing system, complete with labels and instructions for handling, storing & unpacking.
Storage the electrical equipment in clean areas to protect from any kind of dust & direct sun heat.
4.1 MATERIAL HANDLING
QA/QC Inspector will be responsible in checking and receiving all the materials delivered on site prior to stock in storage area.
All Materials delivered to the site must have all relevant supporting documents complying with the specification of the project. Upon inspection approval it can deliver to storage area, fabrication area or installation area. All Materials delivered on site must have relevant supporting documents, design specification, material specifications and warranty certificates complying with the specification of the project requirements or any relevant supporting documents as deemed necessary for the acceptance of the Engineer. Upon inspection approval it can proceed to Storage Area.
Equipment & other related accessories will be stored at dry location and will be protected and covered with plastic sheets.
Equipment and other material which related to the unit installation and material shall be stored on a flat surface in a well-ventilated storage area.
Materials will be subjected to checks against any defects, deformity, scratches, and specifications adhered to approved material specifications.
Material will be rejected if not complied with the specification required.
Prepare Material Delivery to Site Form (MDS) 24
hours prior to the Engineer’s inspection.
4.2 MATERIAL STORAGE AREA
Liquid materials will be stored in the designated CDC MSDS Room. The material shall be sealed or unpacked and free from any foreign materials. In case inspection required, all materials are available in the designated storage area.
Storekeeper will be responsible for overlooking all material and accessories while inside Storage Area and always keep the area clean so that the materials will be free from any damages and prevent any accident on Storage Area as well.
Materials are stored in an acceptable and proper manner. All materials not complying Qatar Foundation specification & relevant submittals shall be returned to the suppliers with approval from Project Manager & QA/QC Engineer.
Items found damaged or unsuitable as per the project requirements shall be removed from the site. Until such time the damaged non-compliant material shall be clearly marked and stored separately to prevent any inadvertent use.
Check and ensure that the equipment unit and related accessories are kept neatly.
The Storekeeper, Site Engineer and QA/QC Engineer in the presence of the Consultants shall conduct the material inspection for type, model nos. etc. and quantities as per requirement.
Work place must ensure proper housekeeping before
leaving the activity area, all tools are in proper place and secure the
equipment from deterioration or damaged.
5.0 PRECAUTIONS & SAFETY PROGRAM
5.1 COORDINATION OF WORKS
Before commencing any work activities coordinate
with the Contractor for daily work permit approval.
Check and verify all activities if there will be concerned to other Contractors. If there is, inform immediately the person in-charge through a formal letter informing the activities should be taken. Request for Information sheet must submit to the Contractor for coordinating with others Contract Package Contractor.
Inform immediately the Contractor of some work coordination to the other Contractor for proper execution of the activities.
Ensure that all activities must inform other Contractor for proper channeling and safe work free.
Check and verify all activities if there will be
concerned to other contractors/disciplines. If there is, inform immediately the
person in-charge or through a formal letter informing the activities should be
taken.
5.2 PERMIT REQUIREMENTS
Work permits shall be obtained prior to any activities being carried-out and work shall commence in accordance indicated in the work permit submitted.
Before performing any overtime work must submit a work permit indicating the activities performing and seek approval first before proceedings to any activities.
Safety Officer will check and advised the Site Engineer to ensure the activities indicated on the work permit will be done with respect to the safety of all personnel, workers and property.
Permits must be submitted by the Contractor before work commences.
Safety Officer will check and advised the Site
Engineer to ensure the activities indicated on the work permit will be done
with respect to the safety of all personnel, workers and property.
5.3 COMMUNICATION ON SITE
Site Engineer, supervisors, safety officers and other site personnel shall be provided by mobile phone and walkie-talkie as necessary.
5.4 MEASURING EQUIPMENT TO BE USED (As necessary and subject for safety personnel acceptance):
Details of equipment and tools to be utilized.
· Pipe
Wrench
· Adjustable
Spanner
· Grip
Plier
· Hacksaw
Frame
· Steel
Cutter
· Lugs
Plier
· Die set
(20,25 sizes)
· Open /
ring Spanner
· Hammer
· Chisel
· Right
Angle
· Wire
Cutter
· File (
Round / Flat )
· Safety
Belt
· Knife
· Line Dori
· Screwdriver
set (Flat)
· Screw
driver set (Star)
· Kalwa
(Plier)
· Plier
· Spirit
Level
· Tool Box
· Hilti
Drill
· Rivet Gun
· Measuring
Tape
· Plump
· Allen Key
· Tighter (
Hand tool battery operated with charger )
· Aluminum
Ladder ( 8 Steps )
· Mobile
Scaffoldings
· Grinding
Machine
· Jigsaw
Machine
· Multi
Meter
· Megger
· Clamp
Meter
5.5 SAFETY:
5.5.1 All site safety rules and regulations shall be adhered to. Clearance / permit shall be obtained prior to installation/works execution on site.
5.5.2 All excess materials and tools shall be removed
from place of work after completion of equipment final installation inspection.
6.0 REFERENCES
Approved drawings.
Approved Material Transmittal
All letters & email correspondence
Manufacturer Installation Manual/Catalogue (as
deemed necessary)
Regulations for the installation of Electrical
wiring, Electrical Equipment and Air conditioning Equipment, Edition: December
2016.
Qatar Construction standards (QCS), Edition: 2014,
Section: 23
7.0 WORK METHODOLOGY
The Sequence of construction works is as followings:
7.1 Material submittal preparation
7.2 Inspection of Material and Tools Deliveries
a. Check all the materials delivered to
the site.
b. Invite Engineer for inspection before
transferring the Materials, tools and accessories to working areas.
c. Prepare a report and mention
specifically if there are damages in delivering items.
8.0 ACTIVITIES
8.1 DISMANTLING THE EXISTING MEP SERVICES:
a. For every activities of dismantling works make sure proper work permit is ready.
b. All the electrical power supply should switched off or shut off from DB during the works.
c. Make sure all the equipment/items to be dismantled are free of electrical power supply.
8.2 CONTAINMENT
WORKS
8.2.1 1st Fix
–G.I Rigid Conduiting:
1) The entries of GI conduit fittings shall be so designed that reliable water tight joint can be made between the conduit and fittings.
2) GI conduits shall be so constructed that it is possible bend the conduit easily with the aid of a bending machine and all conduit and conduit fittings shall be of the threaded type.
3) The minimum size of GI conduit that may be used in electrical installations shall be 20 mm other sizes of conduits shall be limited to the following diameter: 25 mm, 32 mm, 38 mm and 50 mm.
4) Rigid nonmetallic conduits
shall be installed generally in accordance with the
requirements set out for metallic conduits shall allow for the longitudinal
expansion and contraction of the conduits.
8.2.2 1st Fix –PVC Rigid Conduiting:
1) The entries of PVC conduit fittings shall be so designed that reliable water tight joint can be made between the conduit and fittings.
2) A Vinyl solvent shall be used for permanent joints and expansion couplers.
3) PVC conduits shall be so constructed that it is possible bend the conduit easily with the aid of a bending spring and all conduit and conduit fittings shall be of the unthreaded type.
4) The minimum size of PVC conduit that may be used in electrical installations shall be 20 mm other sizes of conduits shall be limited to the following diameter: 25 mm, 32 mm, 38 mm And 50 mm.
5) Rigid nonmetallic conduits shall be installed generally in accordance with the requirements set out for metallic conduits shall allow for the longitudinal expansion and contraction of the conduits.
8.2.3 1st Fix –PVC & GI flexible Conduiting:
1) Flexible conduits may be
employed for connecting electrical motors and other equipment subject to
adjustment of position and vibration to the fixed wiring.
2) PVC & Metallic flexible conduits shall not be used as the sole means of providing earth continuity and a separate earth continuity conductor of appropriate size shall be provided.
3) Flexible conduits shall only be run exposed and shall be so positioned that they are not susceptible to mechanical damage. Where necessary flexible conduits shall be adequately supported.
4) The ends of flexible conduits shall be securely anchored to the fixed conduit or equipment to which it is attached by approved flexible conduit adapters that maintain effective mechanical continuity securely in position without distorting it.
5) The flexible conduit shall not be used as part of the earth conductor.
6) A separate earth conductor shall be installed to comply with the same requirements for rigid conduit installations.
7) The maximum length of a flexible conduit run shall be 2.50 meters.
8) Where flexible conduit is installed less than 1.50 meters above a floor in a position where it may be easily disturbed or reached, it shall be supported at intervals not exceeding 300 mm.
9) Except where terminating
at motors or at other equipment which requires a free length of flexible
conduit to provide for normal movement.
8.2.4 GI Cable tray:
1) A cable tray system shall comprise of a unit or assembly of units or sections and associated fittings, made of metal or other noncombustible materials, forming a rigid structural system.
2) Cable tray systems include ladders, through channels and solid bottom trays.
3) Multi core armoured or non armoured cables may be supported by cable trays.
4) Single core insulated and sheathed cables may also be installed in cable trays.
5) Cable trays shall not be used in locations where they will be subjected to severe physical damage.
6) Cable trays shall have adequate strength and rigidity to provide satisfactory support for the cables contained within them.
7) All sharp edges, burrs and projections shall be removed and the tray shall be finished smooth to prevent injury to cables.
8) Metallic cable trays shall be adequate protected against corrosion by galvanizing or shall be made of corrosion resistant material.
9) Nonmetallic cable trays shall be made from polyvinyl chloride or equivalent and shall be fully suitable for continuous service the local climatic conditions.
10) All cable trays shall be equipped with sides of adequate dimensions. All fittings, bends, tees, employed shall be of substantial sections and of the same quality as the tray itself.
11) Cable trays shall be installed as complete systems with bends and other accessories.
12) Each run of cable tray shall be completed before the installation of cables.
13) Adequate supports shall be provided to prevent stress on cables where they enter or leave the tray.
14) Where cable tray extends transversely through partitions and walls additional protection in the form of non-combustible covers shall be used.
15) Sufficient space shall be provided and maintained around cable trays to permit adequate access for installing and maintaining the cables.
16) Metallic cable trays shall not be used as an earth continuity conductor, although sections shall be bonded using copper links.
17) The number of multi core cables that may be
installed in a ventilated or solid bottom cable tray shall not be greater than
the number as per given standard table values.
Method statement for electrical + Elv data +cctv + fire alarm + Public address system
1) Cable trunking may be employed for housing single core cables at special locations where it is difficult to install conduits.
2) They may be of metallic or
non-metallic construction.
3) Nonmetallic cable trunking
shall be constructed from non-combustible insulation material such as polyvinyl
chloride, which shall be fully suitable for use in the conditions.
4) Metallic cable trunking shall be adequately protected against corrosion by galvanizing or shall be made of corrosion resistant material.
5) All cable trunking shall be provided with removable covers.
6) Cable trunking shall, generally, be run exposed and the trunking shall be completely erected before drawing in the cables.
7) Where adequate means of access is readily available throughout its length, cable trunking may be concealed.
8) Every entry to trunking shall be so placed as to prevent the ingress of water and all dead ends shall be closed.
9) Only unbroken lengths of trunking shall be employed for crossing partitions and walls.
10) Where a common cable trunking is employed for housing both power and communication circuits, or for housing circuits operating at different voltages, the trunking shall be provided with separate compartments for the different types of circuits.
11) Cable trunking shall be manufactured from substantial sections to provide adequate strength and rigidity.
12) All sharp edges, burrs and other projections shall be removed and the trunking finished smooth to prevent injury to cables.
13) All bends, tees and other accessories of cable trunking shall be of substantial sections and of the same quality as the trunking itself.
14) Cable trunking shall be securely supported every metre, when run exposed.
15) The number of single core cables that may be housed in a trunking shall be selected in accordance with the standard table method.
16) Where a number of cables are bunched in a trunking the current carrying capacity of the cables shall be reduced by using the stipulated grouping factor.
17) The different sections of the trunking shall be bonded by copper links although the trunking shall not be used as the primary earth conductor.
8.3 POWER CABLE PULLING WORKS
8.3.1 Cable Pulling and Laying on Cable Ducts
1) Route measurement shall be done and
identification of drum placement points to be marked with peg marking withdrawn
numbers prior to material shifting.
2) The cable drum shall be transported to
the trailer or cable trolley and ensure that the cable drum stands on the
flanges and well strapped during the transport stages.
3) All necessary precaution shall be
taken while unpacking the cable drums or removal of battens to avoid damage on
the cable.
4) Rolling the drum shall not be allowed
for longer distances and shall be ensured only in the direction of arrows
marked on the drum.
5) Ensure that route, areas, ducts to
pulled or laid with cables are inspected and approved and clearance is given.
Check the availability of proper cables to be used and ensure that these are
approved. Ensure that the latest approved drawing shall be used.
6) Check and ensure that the cable ducts
or draw pits are clean, free from debris along the route. Duct internal has to
be checked by using a correct size of mandrel and clean by using rags tied to a
rope and pull back and forth from both ends and check that it is free from any
sharp edges. Ensure that the ducts ends are free from sharp edges.
7) Suitable pedestal support with trolley
will be installed at intermediate manhole and monitored by personnel located at
each manhole during the cable pulling.
8) Provide the identification on all
ducts as per approved shop drawings to ensure that the correct usage of ducts
and the correct members of cables will pass through.
9) Length of the cable route shall be
measured to verify the length of cables required.
10) Place the cable drums closely as possible to the
location where the cables are to be laid.
11) Wherever necessary, cables have to be applied with
approved pulling compound for smooth and easy pulling when entering the cable
ducts and cables have to be fixed with bell mouths.
12) During the installation, the drums (especially the big
cables) turning or rolling will be slowed down or stop by a wooden friction
brakes so as to prevent the turns of the drum from becoming loose and scrapping
on the floor. A layer of protective material from the cable will be laid under
the drum to act as a barrier to prevent the stones or other material from
touching the cables.
13) Good communication measures or devices shall be used or
maintained for a safe and good cable pulling /laying operation. Two way radios
shall be used for communication.
14) Both ends of the cables shall be capped or taped and
sealed with heat shrinkable caps and proper identifications shall be provided.
15) All cables inside the cable pit shall be provided with
necessary supports as per approved shop drawing.
16) All cable ducts including spares shall be sealed with
an approved sealant. Clean all draw pits and place the required cover as per
the approved drawings or specifications.
17) Cable pulling and laying has to be done after the
inspection and approval of route, areas or ducts are obtained.
8.3.2 Cable Pulling and Laying on Trench
1) Ensure that route, areas or trench to
be pulled or laid with cables are inspected, approved and clearance is given.
Check the availability of proper cables to used and ensure that these are
approved. Ensure that the latest approved drawing shall be used.
2) Check and ensure that the cable
ducts/draw pits are clean, free from debris along the route. Trench clearance
shall be obtained from consultant.
3) Length of the cable route shall be
measured to verify the length of cables required.
4) Place the cable drums closely as
possible to the location where the cables are to be laid.
5) Approved dune sand shall be laid on
the bedding of the trench prior to cable pulling/laying if called for in
specifications.
6) Cable rollers shall be placed at
approximate distance between rollers by 1.0 meter- 1.5 meters and fixed well
along the route. Check each roller if it is rolling smoothly, apply WD40 or
grease as required. Top ensure the stability of each roller laid on loose sand
bedding, a wooden pieces or plastic sheets are to be placed under the base of
each roller.
7) Wherever necessary, cables have to be
applied with approved pulling compound for smooth and easy pulling when
entering the cable ducts and cable to be fixed with bell mouths.
8) During the installation, the drums
(especially the big cables) turning or rolling will be slowed down or stop by a
wooden friction brake so as to prevent the turns of the drum from becoming
loose and scrapping on the floor. A layer of protective material from the cable
will be laid under the drum to act as a barrier to prevent the stones or other
material from touching the cables.
9) Good communication measures or devices
shall be used or maintained for a safe and good cable pulling or laying
operation. Two-way radios shall be used for communication.
10) Both ends of the cables shall be capped or taped and
sealed with heat shrinkable caps and proper identifications shall be provided.
11) The laid cables are to be arranged/dressed, proper
clearance to be maintained and tied with approved cable ties.
12) Trench shall be backfilled by sand or soil, step by
step as mentioned in the approved drawings and specifications. Cable tiles,
warning tapes, route markers shall be installed as per the contract requirement
by using an approved material and approved method by civil contractor.
13) Inspection shall be carried out by competent authority
by notifying through inspection request form and checklist shall be filled up
and signed.
14) Engineer's approval for each and every piece of
material used in the process must be obtained prior to execution of the work.
15) Cable pulling and laying has to be done after
inspection and approval of route, areas and trench are obtained.
16) The work shall be executed according to approved shop
drawing.
8.3.3 Cable Pulling and Laying on Trays/
Trunking
1) Prior to shifting the cable drum to
site, check the cable data (ie. cable size, type, number of cores, length,
etc.) against approved shop drawing and cable schedule.
2) Setup the cable stand correctly for
even feeding of the cable. Each stand must be in line with each other. Avoid
the angle in which the cable will be feed from the reel to the tray.
3) Jack the cable drum enough to give
clearance from the floor slab.
4) Check the cable containment is ready
and the route is clear of any obstruction.
5) Remove steel binding straps and
retaining battens and timbers. Any expose projecting nails must be removed.
6) Before unreeling cable, double check
again cable size, rating and type of the cable inside reel. Confirm the data
obtained is as per approved cable schedule/shop drawings.
7) Inspect the tray/trunking supports.
Verify that they are properly fixed.
8) An approved permanent marker shall be
put at each end to identify the cables.
9) The ends of LV cables are sealed
during and after installation. Approved tape or heat shrink tube shall be
wrapped around each end of cables.
10) Cable drum has to be supported so that the cable(s) may
be unreeled and fed into the tray without being subjected to a reverse bend as
the cable is pulled from the reel.
11) Select the correct pulling grip. When selecting a
pulling grip, it is extremely important to select a grip of the correct type,
size and maximum rated based on the diameter of the cable.
12) Feed the cable to the tray at starting point and pull
the rope without unreeling cable on the drum to develop certain pressure
between cable and cable grip until it fully grips the cable.
13) All workers assigned at cable reel location shall
manually roll drum and unreel cable. During the entire pull, only the person in
charge i.e Supervisor or Foreman should give command to workers pulling the
cable in order to synchronize with the workers releasing cables at drum end.
14) Pull in the direction that will require the lowest
amount of pulling force.
15) After the cable has reached the other end, measure the
exact length required for termination to the equipment/panel board. Provide
enough allowance (slack) for every termination point before cutting the cable
at drum end.
16) Arrange the cable in the tray (follow correct spacing
as per approved drawing).
17) Immediately secure the cable to the tray by using cable
suitable plastic/aluminium cable cleats/clamps strap/tie. Spacing of cable tie
should not be more than 1.5 meter or as closed as required. Cable tie and clips
will be used for fixing of smaller size cables running in vertical cable tray
and for larger size cables, proper clamps will be used.
18) Measure the required length of cable at drum end to
terminating point and unreel it from the drum. Provide adequate slack also for
termination.
19) Afterwards, cut the cable from the drum and separate
each phase of the cable in preparation for another insulation test.
20) Good communication measures or devices shall be used or
maintained for a safe and good cable pulling or laying operation. Two way
radios shall be used for communication.
21) Engineer's approval for each and every piece of
material used in the process must be obtained prior to execution of the work.
22) Cable pulling and laying has to be done after
inspection and approval of installation of cable trays/ trunking are obtained.
23) The work shall be executed according to approved shop
drawing.
8.3.4 CABLE TESTING & COMMISSIONING
1) At the completion of each cable
installation and prior to the connection of any service installation, the
insulation resistance and continuity of all cables shall be tested.
2) An insulation resistance test will be
applied between conductors. Test voltage shall be 500VDC on domestic PVC wires
and 1000VDC on armoured cables with an approved, calibrated instrument and a
continuity test will be applied for each conductor and the readings for each
test shall be recorded on the attached test report form.
3) The insulation test reading should not
be less than 1 MΩ and the continuity test reading should not exceed 10M Ω.
Thus:
Test Voltage (IR): 500VDC/1000VDC
Continuity Test ≤ 10.0 Ω
Insulation Resistance Test ≥ 1.0 MΩ
4) If this not the case, cable must be
identified and replaced.
8.4 LIGHTING INSTALLATION:
8.4.1 LIGHT FIXTURES INSTALLATION:
1) All lighting circuits shall be
installed with a maximum loading of 1800 Watts per circuits.
2) The only breaker size permitted to be
used is 5, 10 And 15 Ampere.
3) When contactor control is use for
lighting circuits, loading may be increased to 7 KW per circuit.
4) Heat resisting flexible cords of
minimum size 1.5 mm2, this included cords insulated with butyl
rubber, EP, rubber, silicone rubber or glass fiber, must be used for connection
between the ceiling rose and lamp holders for pendant type light fittings.
5) Where batten lamp holders or enclosed
lighting are used, the final connection shall be made by heat resisting cables,
or cable cores shall be individually protected by sleeves of suitable heat
resisting material e.g. silicon bonded glass braiding.
6) LED Light fittings shall be supported
by direct support from the false ceiling framework (Providing the Ceiling has
been designed to withstand the Weight of the Light Fittings).
7) When using this method it shall be
possible to completely withdraw the light fitting from the ceiling without
damage to the ceiling or reducing its rigidity.
8) Light fittings shall be supported by
chain support from the underside of the structural supports.
9) Each chain shall be secured to the
structural support by means of a hook, and at the light fitting, by an approved
hook with threaded portion to allow for leveling of the light fitting.
8.4.2
EMERGENCY & EXIT LIGHT INSTALLATION WORKS:
1) All lighting circuits shall be
installed with a maximum loading of 1800 Watts per circuits.
2) The only breaker size permitted to be
used is 5, 10 And 15 Ampere.
3) Additional exit light & emergency
lights circuits shall be connected with the existing light circuits.
4) Light fittings shall be supported by
direct support from the false ceiling framework (Providing the Ceiling has been
designed to withstand the Weight of the Light Fittings).
5) When using this method it shall be
possible to completely withdraw the light fitting from the ceiling without
damage to the ceiling or reducing its rigidity.
6) Light fittings shall be supported by
chain support from the underside of the structural supports.
7) Each chain shall be secured to the
structural support by means of a hook, and at the light fitting, by an approved
hook with threaded portion to allow for leveling of the light fitting.
8) Exit light arrow arrangement and
direction shall be arranged as per the approved drawings.
8.5 SMALL POWER INSTALLATION:
1) 13 Ampere switched socket outlets
installed in rooms other than kitchens shall be connected using the ring main
principle with a maximum of 10 Nos. single socket outlets or 5 nos. double
sockets on any one circuit, or one circuit not covering a floor area of greater
than 100 m2 whichever is the less.
2) Twin socket considered as 2 Nos.
3) Each ring main shall be connected to
its own circuit on the distribution board using 4 mm2 P.V.C.
cable for the earth conductor and shall be protected by a 30 Ampere MCB.
4) All conductors shall complete the ring
for each circuit, including the earth conductor.
5) One socket outlet of 15 A rating may
be connected to a single phase and neutral circuit wired with 3 x 2.5 mm2 cables,
protected by a fuse or circuit breaker not exceeding 16 A.
6) One special purpose outlet of 15 or 16
Ampere rating may be connected to all single phase and neutral circuit wired
with 2.5 mm2 cable, protected by a fuse or circuit breaker not
exceeding 16 Ampere.
7) No socket outlet shall be mounted
within two meters of any tap, sink or basin, in any kitchen, cloakroom, etc.
without the special approval.
8) No spur outlets will be permitted from
any ring main wired in 4 mm2 phase conductor and 2.5 mm2 earth
conductor.
9) Joints will not be permitted in any
final circuit wiring except at socket outlets, switches, ceiling roses, general
accessories and light fittings.
10) 1 No.Split A/C unit in air conditioning system shall be
connected to its own 30 Ampere TPN isolator mounted adjacent to the unit.
11) A maximum of 6 Nos. spur units may be connected on
radial circuit using 4 mm2 P.V.C. cables for the live and
neutral connectors and 4 mm2 P.V.C. cables for the earth and
shall be protected by 20 Ampere circuit breaker.
12) 30 Ampere DP Switches shall be installed in designated
area for split AC and shall be connected using with 3 x 6 mm2 cables
on any one circuit.
13) Power Supply shall be given connected through Weather
proof Isolators from DB /SMDB for Split AC, ducted Split AC and FAHU Unit.
14) Each Circuit shall be connected to its own circuit on
the distribution board or Sub main Board using Cable sizes 10 mm2 ,
6 mm2 ,4 mm2 P.V.C. Cable
for the Power supply and shall be protected by a 30 Ampere MCB as per load
requirement.
15) Spur Units / Isolators for indoor unit will be
connected from the same circuit wired in 4 mm2 phase/neutral
conductor and 4 mm2 earth conductor from Outdoor Unit - WP
Isolator. (If required)
16) 1 No. Split AC unit in air conditioning system shall be
connected to its own 30 Ampere DP isolator mounted adjacent to the unit.
8.6 ISOLATOR INSTALLATION
WORKS:
1) Mark the location of isolator on
the walls or ceiling. The mounting height of isolator/disconnect switch in the
walls are as follows
2) 40A isolators mounting height shall be
1500mm AFFL from the Top. and 200A, mounting height shall be 1500mm A.F.F.L.
from the top or as per the site condition.
3) Fix uni-strut channel support on the
wall. Ensure that it is fixed properly and rigid.
4) Fix the isolator/disconnect switch on
the unit-strut channel support. Ensure that it
has been fixed vertically and horizontally aligned.
5) Terminate the incoming and outgoing
feeder cable using appropriate wiring
accessories.
6) Raise Request for Inspection for
isolator/disconnect switches installation.
7) Before relocation of isolators, QNB
Maintenance team shall be informed and requested for power switch off of main
source of isolator and equipment power supply to arrange accordingly.
8.7 INSTALLATION OF DB/SMSB & OTHER ELECTRICAL PANELS:
(IF REQUIRED)
8.7.1 Pre-Construction Activities Panels
SMDB/DB Panels shall be unloaded with care to avoid any damages. If they are shipped in packs or pallets, each pack of pallet shall be lifted individually with suitable lifting equipment.
Hydraulic trolley shall be used for lifting the SMDB in position during installation.
A
mobile scaffold shall be used for securing the SMDB, DB on the wall and for
cable routing and termination.
Every precaution shall be taken to preserve their integrity and cleanliness before installation.
Store
in accordance with manufacturer’s instructions, properly protected from
construction activities and weather conditions.
The
installation of SMDB/DB Panels shall be as per approved shop drawings and
coordination drawings.
Ensure all required documents (i.e. Associated method statements, shop drawings and material approvals) have been obtained.
Before commencing any of the panel board installations, NAT must liaise and get approval from the architect for completion of finishing works as applicable (Plastering and final coat painting).
Ensure that Latest and approved schematic diagrams, load schedules, room layouts, section details, installation details etc., should be made available prior to start-up of site work.
Necessary certification for plant and electrical equipment must be provided.
240V tools if used will be operated through a Residual Current Circuit Breaker (RCCB).
Calibration certificate for testing tools & equipment that will be used on site must be submitted.
· Ensure
that the Factory test reports for components of SMDB / DB/ Panels are approved
and reviewed upon delivery at site and to be re-tested prior to installation,
to ensure a fault free installation.
The site supervisor/ site Engineer will brief the team on the RAMS for the works and explain the safe system of work and residual risks related to the task to the work force.
All the Training records and RAMS shall be kept available on site.
8.7.2 INSTALLATION OF SMDB/DB ELECTRICAL PANELS. (IF
REQUIRED)
Site
Engineer shall check and verify the correct location, position and height of
the SMDB/DB Panels to be installed on site with approved shop drawing.
SMSB, DB panels/UPS shall be off-loaded using manpower and with the help of trolley and shall be installed on site using a suitable hydraulic trolley.
Mark-up the location of the SMDB/DB Panels once the final paint on the wall/floor has been completed.
Drill holes on the concrete wall foundation following the depth and position as specified in the approved shop drawing.
Clean and remove the dust on the drilled holes.
Insert the threaded rod into the hole and ensure its straightness. If needed, provide adequate support to SMSB/DB Panels.
Lift and place the SMSB/DB Panels on the concrete wall by manual means or by means of a suitable hydraulic jack.
The SMDB/DB Panels shall be positioned in such a way that the entry hole for the supply cable at the metal base frame of the SMDB/DB Panels shall be accessible easily.
SMDB/DB panels shall be installed vertically at 90 degree from the horizontal floor level.
SMDB/DB Panels shall be fixed on the wall/rigid support frame with bolts and nuts. Insert and tighten at every holding point location of the SMDB/DB Panels, at the torque value of the respective bolts and nuts as provided by the manufacturer.
Ensures clearance of not less than 1m in front of SMDB/DB, or as indicated.
For flush installation DB’s, all conductors shall terminate behind the board in an adaptable box. For surface mounting, trunking shall be fixed between the board and ceiling or floor level, or conduit run directly into Trunking which prevent correct installation of the Trunking lid. Adequate earth continuity shall be made between the various components.
All field wires shall be identified and terminated accordingly with earth connection. Pull wires and/or cables inside the panels.
Earth connection shall be tighten properly to connections to assure effective grounding.
Terminate the cables inside enclosures by securing the cables to switchboards with gland.
Ensure the load schedule in a clear transparent cover within the panels.
Protect the SMDB/DB Panels after installation. SMDB/DB Panels shall be thoroughly covered with adequate plastic or paper material to prevent ingress of dust or construction materials.
Connect the conductors to the input terminals of MCCB, the neutral conductor to the neutral bar and earthing in the SMDB/DB.
All wires/cables shall be labeled using approved cable marker and equipment tag no. for easy identification & maintenance.
SMSB/DB shall be protected from damage after installation.
8.7.3 DB PANEL CIRCUIT TERMINATION
WORKS:
1) All the 1st fix & 2nd fix items shall be inspected to ensure they are carried out as per the detailed drawings and fall in requirement of standards as specified.
2) All the wires pulled will
be verified through megger (insulation resistance test) for any insulation
damages.
3) Upon confirmation, the wires will be arranged as per individual circuit reference and tagging will be done.
4) Based on the no. of power circuit being used, MCB breakers will be connected to the existing DB or SMDB.
5) Based on the no. of small power circuit being used, ELCB breakers will be connected to the existing DB.
6) Once all the circuit verification & labeling are completed, the termination will be executed.
7) Upon termination completion, the same will be offered for final inspection.
8) The final results of the inspection shall be recorded on form for installation.
Mounting Heights for Electrical System:
|
Isolators |
1250 mm AFFL or as per Site
Condition |
|
Light Switches / Dimmer |
1250 mm AFFL |
|
DP Switches |
1250 mm AFFL |
|
Spur Units |
As per requirement |
|
13 Ampere Socket Outlets |
450 mm AFFL Or As per requirement |
|
Thermostat for
A/C |
1250 mm AFFL |
8.7.4 TESTING AFTER INSPECTION
1) Following checks shall be done to ensure no leakage to earth.
A. Panel board and circuit shall be
checked.
B. All the distribution circuits
shall be checked individually.
C. All the outgoing circuit cabling
/ wiring shall be checked individually.
D. Earth leakage circuit breaker
(ELCB) trip testing to be done.
E. Prior to connection,
Insulation resistance for all outgoing wiring shall be done.
F. After termination of
cabling / wiring and main cables, the tightness shall be checked for all
terminations.
G. The result of the insulation resistance shall be recorded on form FRM-22/18, Rev No.01
2) Phase sequence check shall be done.
3) Functional check of Distribution Boards shall be done.
4) The final results of the inspection shall be recorded on form for installation.
8.7.5 COMMISSIONING OF DISTRIBUTION BOARDS
1) Make sure that the Main Incomer MCCB is in OFF position.
2) Make sure that all the outgoing circuit MCB’s are in OFF position.
3) Ensure the main supply available at corresponding Isolator side.
4) Switch ON the main supply from corresponding Isolator side.
5) Ensure the main supply is available at the main incomer side from the corresponding Isolator side.
6) Check the incoming voltage and make sure that the correct voltage and phase sequence is available at the main incomer side.
7) Switch ON the main MCCB of the panel board.
8) Switch ON the outgoing MCB’s / ELCB’s of the panel board one by one.
9) Check whether the power supply is available at the receiving ends.
10) Ensure that all QA/QC measures have taken during all the activities.
8.7.6 TESTING
Before the start of the final testing & commissioning, make
sure to check the following items:
1. All the installation works are
completed as per the drawings & project specification.
2. All the Power Cables are terminated
properly.
3. Power supply for all the
equipment is ready & system is ready to start.
4. System should be checked as per
pre-commissioning checklist.
5. Panel board and circuit shall be
checked.
6. Prior to connection, continuity for
the loop wiring shall be done.
7. After termination of wiring, the
tightness shall be checked for all terminations.
8. The final results of the inspection
shall be recorded on form for installation
8.8 INSTALLATION OF SPEAKER AV SYSTEM
Audio Visual speakers are specifically designed for use in
buildings where performance of systems for any function or ceremony or for
background music to be the requirement.
8.8.1 Open Ceiling Installation
The public address speaker must be suspended from the back of
the can in both open ceiling and ceiling tile applications, using either the 3
pendant mount tabs or the 3/8” threaded rigging point. To prevent rattles,
rotate the 4 mounting tabs towards the can, then tighten the mounting tab
screws.
8.8.2 Ceiling Tile Installation
Step 1: Cut the Hole (Figure 5) Cut out the hole by tracing
the cardboard template or with a circular cutter set to the appropriate cut out
size. If the wire has been pre-installed, pull the wiring through the cut out
hole.
Step 2: Install C-Ring and Tile Rails for suspended ceiling
installations, insert the C-ring through the hole cut in the ceiling tile.
Place the C-ring around the hole with the tabs located. Insert the tile rails
through the cut hole in the ceiling tile. Snap the two rails into the two tabs
in the C-ring and align the rails so that the ends extend over the T-channel
grid on the side of the tile. Secure the rails onto the C-ring tabs by
inserting a screw though each tab into the rail.
Step 3: Terminal Block
The unit has a three-way terminal block with screw
connections suitable for loop-through wiring. Four primary taps are provided on
the matching transformer to allow selection of nominal full-power, half-power,
quarter-power or eighth power radiation (i.e. in 3 dB steps).
Attach Wiring to the Ceramic Connector (Figure 7) Insert the
bare end of wire into the appropriate connector terminals as described below
and screw down the hold-down screw until tight, using a small screwdriver.
Step 4: Mount the Speaker into the Ceiling (Figure 8) Push the speaker into the ceiling hole until the front baffle rim is flush with the ceiling. Tighten the mounting tabs by turning the screw clockwise until the speaker is secure. Please note that the first clockwise quarter turn rotates the attachment tabs outward. The remaining turns tighten the tabs down onto the back of the ceiling surface (see Figure 9).
Note:- If 3/8” threaded rod is to be used in a ceiling tile
installation, the threaded rod must be installed to the threaded rigging point
before installing into the ceiling.
For each attachment screw, first turn one half turn counter
clockwise to release the counting tab from its guide.
The assembly is quickly installed into a hole in the ceiling
cavity. A separate mounting ring, secured by three integral spring-loaded
ceiling locking clamps (for ceilings and wall boards from 9 to 25 mm thick)
holds it in place. The clamps are provided with protective rubbers to avoid
damaging soft ceiling material. A circular template for marking a 196 mm (7.7
in) diameter hole is included with the loudspeaker. The loudspeaker unit is
held in the mounting ring with a bayonet fitting.
After completion of the landing of the speaker cables, the
cables will be tested with a standard industrial insulation tester. The tests
shall be conducted to check and or verify for short circuits between conductors
and the outer sheath. If each core cannot be identified, they will be phased to
determine each core at both ends & will be appropriately marked.
Ensure that the speakers installed as per the approved IFC
drawings.
Ensure that the wiring termination for the public address system is complete
& correct polarity is maintained for all field devices.
Ensure that the speaker cables are pretested for continuity before termination.
Ensure the availability of power supply to the voice evacuation panels.
Verify and double-check all field devices are appropriately supported &
secured.
Check and verify for proper identification on of all Public address system.
8.9 FIRE ALARM SYSTEM
8.9.1 Smoke Detector & Heat Detector
· Care
shall be taken while handling detectors.
· Ensure
that the mobile scaffolding used for installation is approved.
· Ensure
that the proper hand tools are used for avoiding any damages to devices or
technician.
· Notes:
· Break off
plastic tab where indicated to engage locking mechanism.
· Once
locking mechanism is engaged, you must insert a flat-head screwdriver in slot
indicated to release the detector from the base.
· Use the
slotted hole indicated for the first screw when mounting.
· All
detectors shall be installed with dust covers. It is important that the dust
covers shall be removed only prior to testing & commissioning.
· Use a
small screwdriver or pen to set the switches.
· Double-check
the location of the sensor base and its address before proceeding to electrical
· To lock
detector/sensor into base, turn unit until the locking tab clicks into place.
· To unlock
detector/sensor, insert the blade of a screwdriver into this slot and then pull
down on handle. This action allows the detector/sensor to be turned and
removed.
8.9.2 Manual Call Point
· Care
shall be taken while handling detectors.
· Ensure
that the mobile scaffolding used for installation is approved.
· Ensure
that the proper hand tools are used for avoiding any damages to devices or
technician.
· Fix the
Back box to a flat vertical surface using a mounting holes provided.
· The Loop
cable may be connected to the terminals provided.
· Manual call point shall be located in the Entrance, normal path of Exit and distributed in the protected area as per the approved shop drawing.
· Manual
Call point should be install at the height of 1.2 M from the finished floor
level.
· Testing
the Manual Call point may be carried out either by Pull Down the element or by
using the key.
· Ensure
that Manual Call Point are unobstructed and readily accessible
· Use a
small screwdriver or pen to set the switches.
· Double-check
the location of the manual call point and its address before proceeding to
electrical installation.
8.9.3 Installation of Wall Mounted Sounders / Horn Strobes
· Care
shall be taken while handling devices.
· Ensure
that the mobile scaffolding used for installation is approved.
· Ensure
that the proper hand tools are used for avoiding
· Install
horn strobes on flush mounted back boxes with the device operating mechanism
concealed behind the back box as shown on the shop drawings.
· Make the necessary termination / connection based on the termination instruction provided witthe device. Connect the loop cables to the sounder terminal block observing polarity.
Terminals are provided for the wiring the horn and strobe of
these A/Vs to separate NACs.
Operation of the horn and strobe is not separately controlled
when they are both wired to same NAC.
· The Horn
strobe must be connected to signal circuits which output a constant (not
pulsed) 24V dc voltage.
· Ensure
that End of Line resistor (provided in the panel’s accessory pack) must be
connected at the end of the NAC circuit to allow the wiring to be monitored.
8.9.4 Inspection and Testing
· After
completion of installation, the Fire Detection and Alarm System will be
inspected in accordance with the approved drawings, codes, specifications and
this method statement.
· Identification/
labelling shall be inspected prior to subjecting the system for inspection.
· All the 1st fix
& 2nd fix items shall be inspected to ensure they are
carried out as per the detailed shop drawings and fall in requirement of
standards as specified.
· All the
wires/cables pulled will be verified through Multi meter for Continuity test.
· Upon
confirmation, the wires will be arranged as per individual circuit reference
and tagging will be done based on the loop no. incoming & outgoing cable
for each detector point.
· Once all
the circuit verification & labelling are completed, the termination will be
executed.
· During
the ceiling closure, fire alarm cable shall be ready to drop down after false
ceiling works.
· Upon
termination completion, the same will be offered for final inspection.
· Reprogramming
of fire alarm and recommended testing in accordance with QCCD requirement
testing commissioning shall be done by fire alarm specialist.
Mounting Heights of Fire Alarm Devices:
1. Fire alarm control
panel : 2200
mm AFFL from Top of panel
2. Pull station (Manual Call
Point) : 1250
mm AFFL
3. Interface
Module : As
per req. on AFC
4. Sounder Horn & Strobe
light : 2100
mm AFFL
5. Smoke
detector : On
False ceiling
6. Smoke detector
(AFC) : Above
False ceiling
7. Remote LED
Indicator : On
False ceiling
8.10 INSTALLATION OF ELV/DATA SYSTEM
8.10.1 CAT6A CABLES
· Pull rope
in conduit is tied to pulling spring with insulation tape & pulling spring
is drawn inside the conduit.
· The
required Nos. of cable is tied to the pulling spring with insulation tape and
drawn inside the conduit.
· Cable
will be pulled gradually meter by meter, by one person, while another person on
other end will be feeding the cable in pipe continuously. If any hindrance is
experienced while feeding the cable, the pulling person will be told to stop.
· The cable
will be pulled gradually with minimum force. If cable pulling is too tight we
check for damage in pipes, or if lengths exceeds 30 meter or if more than 2
nos. of 90 deg. bend are used.
· Not more
than 3 Nos. of Data cable to be pulled in 25mm conduit or as specified in the
approved IFC/Shop drawings.
· Care
should be taken not to draw the cable with any kink, twist or damage. Such
cables should be cancelled.
· For
Trunking, the cable is laid in a neat and order fashion, with ample of space
for closing the cover.
· When
laying cables in tray, cable will be symmetrically arranged and cable ties will
be used at every 60 cm.
· Additional
Cat6a Cable loop i.e., 5-10 meters shall be left at both ends.
· All
Sleeve opening shall be sealed after the cable pulling.
8.10.2 TERMINATION OF CAT 6A CABLES
Start with clean hands, cable, parts, tools to avoid electrical
irregularities in the finished product.
Cable Preparation
Copper cables should only be prepared and connected using
suitable tools. If, for example, a knife or an unsuitable stripping tool is
used when stripping the cables, there is a risk that the wires in the cable may
be damaged or their insulation cut. If this is the case, it is highly likely
that shielding, short-circuits or other sources of error are then caused. It is
also important to use a side cutter that allows the wires to be cut cleanly and
flush. You should make sure that all modules or plugs, regardless of their
design, are connected cleanly and carefully.
Cat 6A Key Connect Modular Jack
· Cable
Preparation:
a) Cut off
approx. a 2 in. (5 cm) portion of the jacket.
b) Slit
jacket approx. 4 in. (10 cm) with ripcord, or use a standard slitting tool; Cut
off jacket at the bottom of slit.
c) Cut the
Ripcord, if any; fold back the aluminum tape over the jacket.
d) Keep
0.5 in. (1 cm) of the aluminum-polyester screen; Wind the drain wire around the
aluminum foil.
e) Remove
the PET tape that recovers the 4 twisted pair.
f) Cut off
cross-web.
· Wire
Guide Preparation:
a) For
TIA568-B configuration, align pairs as shown;
b) Push
the Wire Guide against the Jacket; untwist the wire pairs; Split the bonded
pairs with the Cable.
c) Follow
the color code that is on the side of the jack.
d) Prepare
to terminate the pairs by positioning the end of the skinned jacket very close
to the back end of the jack.
e) Cut the
extra wires with a flush cutter. The tips of the wires should protrude no more
than 1/16 in (0.5mm).
· Module
Termination:
a. Align
the Wire Guide’s arrows with the Module arrows.
b. Close
the jaw until it clicks into place; Slide the shielding lug close to the
jacket.
c. Wrap
the cable tie around the shielding lug and position it as shown.
· Module
Installation in Patch Panel:
a. To insert, engage the bottom of the
module in the opening
b. Then press the top latch and pivot the
Module as shown
8.10.3 TESTING OF CAT6A CABLES
· Copper
cabling transmission performance depends on cable characteristics, connecting
hardware, patch cords and cross-connect wiring, the total number of
connections, and the care with which they are installed and maintained.
· The
following channel test configuration should be used by system designers and
users of data communications systems to verify the performance of the overall
copper channel.
· Channel
performance is the most critical to the end user, as this is how their network
will perform. The channel includes up to 90 m (295 ft.) of horizontal cable, a
work area equipment cord, a telecommunications outlet/ connector, an optional
transition/consolidation connector, and two connections in the
telecommunications room.
· 2TIA/EIA-568B.2-1
recommends and ISO 11801 requires that the consolidation point be located at
least 5 m (16.4 ft.) from the telecommunications room to reduce the effect of
multiple connections in close proximity on NEXT loss and return loss.
· Per the
TIA standard, the total length of equipment cords, patch cords or jumpers and
work area cords shall not be more than 10 m (32.8 ft.). If total patch cords
are longer than 10 meters, the entire channel length must be de-rated by the
length exceeding 10 meters depending either by 20% or 50% depending on the
patch cord cable type used.
· The
connections to the equipment at each end of the channel are not included in the
channel definition. The channel definition does not apply to those cases where
the horizontal cabling is cross-connected to the backbone cabling. It has
evaluated the Fluke DTX-1800 Series Digital Cable Analyzer and approves the use
of this tester for the certification of installed 10 GB/s cabling channels.
· In order
to verify that the installed cabling will meet or exceed the performance
requirements of the designated classification defined in the IEEE 802.3an
Standard, it is important that the following steps are followed.
Channel Testing
1. Verify that your Fluke tester has the
most up-to-date software.
2. Perform a Set Reference procedure in
the special functions prior to testing. Fluke Networks recommends that a Set
Reference procedure be performed every 30 days to ensure the maximum accuracy
of the test results. For detailed instructions on Set
Note: Fluke Networks also recommends factory calibration once a
year to ensure that the test tool meets or exceeds the published accuracy
specifications.
3. Select the Fluke Channel Adapter (#
DTX-CHA001A (AxTalk)) and attach them to the DTX-1800 Series Main and Remote
unit.
Select from the following Fluke Autotests:
- 10GBASE-T
- TIA
Category 6ACh.h
- TIA
Category 6A PL
- ISO
ClassEA Ch. AMD1
- ISO
ClassEA PL 25N1513
- TIA
Category 6 Channel
- ISO
Channel Class E
- TIA
Category 5e Channel
- ISO
Class D Channel
For channel testing, install all patch cords prior to testing.
1. Begin
testing the installed channels with the Fluke Digital Cable Analyser and save
all test results.
2. Troubleshoot
and repair any failing channels. Channels resulting in a PASS* are considered a
PASS and will be acceptable for warranty.
Note: The Fluke HDTDX analyzer and HDTDR test are very helpful
when troubleshooting failing channels. Both can be found on the SINGLE TEST
menu & will also run automatically when a failure occurs.
8.10.4 INSTALLATION OF DATA/TELEPHONE OUTLET
Installation of outlet boxes shall be concealed.
Ensure the location of the box outlets in the site as per shop drawing
/installation details once getting clearance from the civil team to do it by
marker.
Mounting heights for boxes approved by the engineer as per approved mounting
height details shown in the drawings.
Do the marking for the concealed box on the LGS wall by marker.
Fix the outlet boxes securely in way to be adjustable and should be located as
per approved Shop drawing.
GI back coves shall be fixed on the L.G.S wall frame with necessary sports.
Plates shall be installed with all four edges in continuous contact with
finished wall.
Plates shall be installed with less alignment tolerance of 1.5mm.
INSTALLATION OF
JUNCTION, PULL & TERMINAL BOXES
Fix junction, pull and terminal boxes where indicated and where
required to facilities pulling of wires and cables and connection of future
appliances.
Locate boxes as inconspicuously as possible, but accessible after work is
completed.
8.10.5 INSTALLATION OF IT RACK:
All the installation shall be done in accordance with approved
drawings, project specifications and QCS 2014.
Location/area shall be ready for site installation. Prior to the installation
the area where the items to be installed shall be inspected to ensure
architectural works and finishing are complete and area is free from dust.
Wall or Floor mounting of the rack should follow the instructions for the mount
used and use approved installation practice appropriate for the structure and
material the mount is being attached to.
Prior to the installation, check all the materials as per detail drawings and
mark the location for the racks.
All the labeling of the racks and accessories shall be accordance with the IFC
layout drawings.
Assembly Steps
Before performing the following steps, ensure to have a level
surface that is large enough for the rack.
Should the assembly be performed on a non-level surface, the rack will not be
straight once assembled.
Unscrew the hex nuts that are attached to the pillars and keep them aside.
Lay the top cover and bottom cover on a level surface.
The distance between the top and the bottom cover should be approximately the
height of the rack rails.
Slide the Rack rails between the top and bottom cover and secure it with the
hex nuts. Do not tighten.
Slide the second rack rail between the top and bottom cover and secure it with
hex nuts. Do not tighten.
Attach the connection plate between the two rack rails on the threaded studs
with the flat part of the plate facing the inside of the rack (See Figure 1).
Do not tighten.
Secure the rack rails to the top and bottom cover with screws as
shown in the diagram.
Flip the rack over and repeat steps 3, 4, 5, and 6.
Fixing both panels with screw & nut on the top & bottom panel.
Install the caster wheels on the bottom panel of the Racks. If required
Stand up the rack on a level surface with the bottom cover/casters facing down.
Tighten all the screws.
Installing the side door panels. Press and hold the locking
button available in side section of panel and fix side door into frame. Once
panel is fixed release the button - Side door panel will be fixed
Fixing the Front and Rear Door. Lift the front door and insert locking into the
frame hole.
Install the Thermostat Fan, installed in the top cover from outside of the
enclosures/racks. The fan is kept in place using four latches and by gluing
tape.
Install the bond connection from a cabinet to the cabinet door & side
panel.
8.10.6 INSTALLATION OF PATCH PANELS
Copper Patch panel
Using the appropriate screws, attach the Patch Panel into the
rack.
Jack could be terminated directly in the Patch Panel or in the
Termination Station.
To insert a Jack in a Patch Panel engage the bottom of the jack in the opening
and pivot the top latch as shown
Install Rear Cable Management Bracket
Route cables from the backside of the patch panel and loosely attach them with
cable ties to the wire managing device.
Continue assembling cables in this sequence method with the Cable Management
Bracket initially installed to get the appropriate length for each cable and
ensure the slack of the cable is not more than 3 meters.
Secure the cable to the patch panel with a zip tie if there is a slot or tab
for a zip tie.
Secure cables over the brackets with Cable Tie and ensure conductors are not
damaged while testing of cable jacket with knife.
After termination of all of the cables and snapping all the jacks into the
panel, gear the cable slack behind the panel and tighten the cable ties.
Label installation: affix label using edge of outer connector
opening in patch panel.
All the labeling of the Patch panels shall be accordance
with the approved ICT Rack layout drawings and labeling scheme.
Fiber Patch panel
Using the appropriate screws, Install the Fiber Patch panel to
the Rack with 4 Screws.
Install the patch panel in the rack mount fiber optic enclosure.
Remove the front panel of rack mount fiber enclosure, then install patch panel
and fasten the screw.
Fix the equipment in the rack and leave some space between the patch panels for
cables management.
Connect Single Mode / Multi Mode Optic Cables to the patch panel
in one pull, which helps to protect the bend radius. Comb and bundle
the cables, and put them into the patch panel trunking, then
cover it with top panels.
Secure the fiber cable into shelf with gland and there should be approximately
1 inch (2.54cm) of sheath visible at the end of the gland. Slack of
the cable is not more than 3 meters.
Secure patch panel firmly to the equipment rack or bay.
Remove the cover and Install fiber caskets and pigtails in the Fiber patch
panel.
When using jacketed patch cords, use maximum cable diameter of 2.0mm and
maximum connector length of 2.0 inches (from end of ferrule to end of boot).
Install the patch cords and route cables.
All the labeling of the Patch panels shall be accordance with
the approved IFC Rack layout drawings
8.10.7 INSTALLATION OF POWER DISTRIBUTION UNITS
Attach the vertical-mounting brackets to the Rack PDU, using
four 8- 32 flat-head screws per bracket.
Attach the Rack PDU to a vertical mounting rail in the rear of the
rack/cabinets using two additional screws per bracket.
Ensure the industrial sockets type units are installed as per approved drawings
and location.
Install the Industrial Plugs and Power cable for the PDU.
All the labeling of the PDU’s shall be accordance with the approved ICT Rack
layout drawings and labeling scheme.
8.11 INSTALLATION OF CCTV SYSTEM
8.11.1 Installation of Fixed Pole Mount Fixed Dome Camera
· Finalize
the Light pole on which the camera to be installed as per the approved drawing.
· Exact Location of the CCTV camera shall be as per approved CCTV installation layout plan as well and to be coordinated at site to ensure easy access for maintenance in future.
Precautions before installation
Ensure you read out the following instructions before installing
the camera
· Select an
installation site that can hold at least 5 times the camera’s weight.
· Stuck-in
or peeled-off cables can cause damage to the product or a fire.
· For
safety purposes, keep anyone else away from the installation site. And put
aside personal belongings from the site, just in case.
· If the
product is installed with excessive force, it may cause damage to the camera
due to malfunction. Forcing assembly using non-compliant tools may damage the
product.
Disassembling
1. Peel off the tape fixing the camera
case.
2. Take off the cushion protecting the
camera lens.
Installation (mount plate)
· Attach the installation template on the desired pole surface and drill holes for screws and cables.
· Fix the
mount plate using appropriate screws.
· Pull out
necessary cables among LAN cables through the hole in the mount plate
· Mount the
bush to the camera case.
Installing the camera module
· Connect
the LAN cable to the camera module terminal.
· Attach
the camera module to the case.
A magnet is embedded at the bottom of the module
Take caution not to allow any foreign objects between the
attaching surfaces.
· Adjusting
the monitoring direction for the camera as per approved coverage drawings
· Adjust
the pan angle taking account of the direction to monitor.
· Adjust
the horizontal angle so that the video does not flip when rotated.
· Adjust
the tilt angle toward the direction to monitor.
Assembling the dome cover
· Make sure
to firmly tighten the fastening screws so that there is no water damage issue.
· Mount the
weather cap to the dome cover and fasten the screws.
8.11.2 INSTALLATION OF BULLET CAMERA
Work Procedure
· Select a
location to install the component and applicable mount as per approved CCTV
drawings
· Mark and
Drill the camera mounting base on the back box.
· Install
the mount:
o Install the Camera wall mounting base to the
smooth vertical surface or GI extension bracket.
o If necessary to prevent water damage, apply
sealant around the bolt holes between the mount and mounting surface.
o Install camera mounting base into wall
bracket.
o Pull the wires through the arm stating from
the bottom of the mounting plate; pull the wires out through the threaded
opening at the bottom of the arm.
o Adjust the monitoring direction for the
camera as per approved drawing.
o
· All active and
passive equipment shall be installed in accordance with the approved drawing
and manufacture’s recommendation
8.11.3 INSTALLATION OF PTZ CAMERA
Work Procedure
· Finalize
the Light pole on which the camera to be installed as per the approved drawing.
· Exact
Location of the CCTV camera shall be as per approved CCTV installation layout
plan as well and to be coordinated at site to ensure easy access for
maintenance in future.
· Mark and
Drill the camera mounting base on the pole base plate
· Install
the mounting kit of the camera in the base plate of the pole
· Installing
by wall mount
Fix the installation base with the bracket
1. Fix the base with the bracket by turning it clockwise.
1. As shown in the picture below, gently
press and lift up the handle of the hinged door on the bottom of the
installation base. Please refer to the Camera Wiring Interface Board”
2. Connect the camera safety wire to the
installation base
3. Assemble the installation base and
camera by matching the installation direction guides.
4. Rotate the mounted camera unit
clockwise so that the reference indicators of top and bottom are as shown in
the image
5. Secure the installation base and
camera using hexagon screw.
· Pull the
patch cord from the Industrial switch on the lighting pole to the camera base
plate
· Pass the
cable through the base plate of the camera and connect it to the RJ45 jack of
the camera
· Adjust
the monitoring direction of the camera as per approved drawing.
9.0 DOCUMENTATION
9.1 As Built Drawings
During the project completion as built drawings should submitted
for client reference and record based on the red markup changes during the
execution/installation stages.
9.2 System Operation & Maintenance Manual
All the used major equipment catalogue, spare parts schedule
& overall project operation system will be submitted during the final
handing over stage.
10. ATTACHMENTS
combined method statement is very useful
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