CONTENTS:

1. Scope of works

2. Project organization for Health & Safety Control

3. Health & Safety Risk and Control

4. Access / Egress

5. Lighting

6. Plant & Equipment

7. Personnel Training Certificate

8. Hazardous Materials & Substances

9. Waste Management

10. Special Control Measures

Appendixes

Appendix 1: Checklist for cable containment

Appendix 2: Checklist for cable installation

Appendix 3: Project Organization for Health & Safety control

Appendix 4: Risk Assessment

Appendix 5: Personnel Training Certificate

1. Scope of Works

Scope of Activities

In common usage, a mock-up is a scale model of a structure, usually used for

demonstration, testing, a design, etc.

The cable, cable Ladder/Tray/Trunking system shall confirm to the material and fabrication

requirements as per this specification. This scope defines the minimum standards to be

adopted when installing Cable Containment for Ladder/Tray/Trunking and cables in buildings

and structures according to Electrical specification of client. Cable Containment and cables

shall be installed surfaced-run in the concrete slab/wall according to construction co-

ordination drawings.

Site Procedure

Site mobilization shall be done with real time monitoring the conditions & progress of builder

works. Before commencement of the work, carry out examination of the physical condition of

the area. Photographs should be taken where necessary, prior to commencement and

during works.

Method StatementI. Preparation stage

a. Prior to install cable containment and cables; examine cable containment paths to

ensure all areas free of debris that may interfere with the installation.

b. Cable containment and cables drum are generally bundled and ship to site for

delivery.

c. Special care must be exercised using slings so the cable containment and cable

drum is not crushed from the improper location and lifting by sling.

d. To prevent damage to cable containment and cables, never pull from truck trailer by

chaining to bottom rung and dragging out of trailer.

e. To prevent damage to cable tray, never pull cable tray from truck trailer by chaining

to bottom rung and dragging out of trailer.

f. Inventory all items immediately after unloading, using manufactures packing list.

g. Cable tray should be stored away from high traffic areas. Cable tray should be

stacked by width and type.

II. Installation stage:

A. Ladder/Tray/Trunking

a. Site survey the proposed routing as per approved CSD / Shop Drawing by Foreman and

Sub-Contractor.

b. Installation must be carried out based on approved shop drawings and samples by

Foreman and Sub-Contractor.

c. Select the correct size of anchor bolt and supporting bracket by Engineer, Foreman and

Sub-Contractor.

d. Install the correct size of Ladder/Tray/ Trunking, anchor bolt and supporting brackets by

Foreman and Sub-Contractor.

e. Check to ensure no sharp edge within the Ladder/Trunking/ Tray compartment by

Foreman, Assistant Foreman and Sub-Contractor.

f. Cable tray supports- Supports for the cable tray should provide strength and working

load capacities sufficient to meet the load requirement of the cable tray wiring system.

Consideration should be given to the loads associated with future cable additions.

g. Cable tray installation- Place the next straight section across the next support, and

attach it to the previous section with a pair of splice plates and hardware. Splice plates

should be placed on the outside of the cable tray with the bolt heads on the inside of the

cable tray.

h. Expansion splices plates- It is important that thermal contraction and expansion be

considered when installing cable tray system. The length of the straight cable tray run

the temperature differential governs the number of splice plates required.

i. Hanger Rod Clamp- Install thread nuts onto threaded rod approximately 225mm(9”),

above desired location for bottom of cable tray. Place the clamp around side rail of cable

tray. Then lift entire cable section onto threaded rod running through holes in clamps.

The threaded a second set of nuts onto threaded rod moving them up until bottom of

cable tray reaches desired location.

j. Single Channel Cable Tray Hanger- Install thread nut to threaded rod to height required.

Place hanger on threaded rod and follow with one nut. Run nut up threaded rod until

bottom of hanger is at desired height. And run top nut down to tighten. Then place the

channel on hanger and secure in place as necessary.

k. Marking- Using a square that reaches across width of the cable tray, gauge off the edge

of one side rail and mark both flanges see fig below. Next, position the square as shown

in figure. And mark the web of the rail. Marking can be done with scribe, marking pen, or

a pencil.

l. Cutting- The cut can be using a hand held hacksaw, carbide tipped circular saw,

diamond dusted blades, hand held band saw, offset bolt cutters or high speed grinder. It

is important to get square cut to ensure good splice connection. Cable tray manufactures

offer jigs and other devices to aid in the field cutting. After cutting, smooth the cur edges

to remove any burrs.

m. Drilling- Holes for splice plates must be drilled in field-cut cable trays. The most common

method of locating the hole position is to use a splice plate as a template. Drill jigs (see

the below fig) are also available. A short piece of side rail that is punched with standard

factory hole pattern can be bolted to the splice plate to serve as a stop that rests against

the end of the field-cut side rail. Clamp the splice plate to the rail and drill through the

splice plate holes and the side rail. The correct drill size is dependent on the hardware

supplied with cable tray. Match the holes that exist in the cable tray. After drilling, remove

the burrs.

n. After installation of cable containment, Engineer-in-charge shall check the complete

works and complete the Inspection checklist for cable containment installation works.

( See annex. 1)o. Engineer-in-charge shall arrange and request for inspection with the Owner’s

representative Residential Technical Officer (RTO) using approved Main con Request for

Inspection (RIN) form.

B. LV-Sub-main cables a. Site survey of the proposed cable routing based on approved CSD by foreman /

sub-contractor together with Engineer.

b. Installation shall be carried out based on approved shop drawings & material used

shall be of approved brand. c. In most cases, the distribution sub main cables will be in the form of XLPE /PVC

cables with copper conductors, all as defined in the particular specification and

drawings.

d. Cable containment shall be completed prior to cable installation. Draw the cables

into containment for installation of larger diameter cables rollers would be placed at

strategic location to ease the process.

e. If cables are to be jointed, then the manufacture recommended jointing kit and

methods are to be strictly adhered too.

f. In the event of joints being unavoidable, such joints shall conform to the

requirements of BS7671 and clearly identified in the “as built drawings”.

g. Cables of the sizes and types specified shall be installed to follow the approximate

routes indicated on the drawings.

h. Cables shall be installed in such a manner that the cables do not come into contact

with gas, oil, steam, hot or cold water pipes.

i. Where installed within switches, distribution boards, control panels and the like,

wiring shall be neatly and carefully bunched, being adequately supported and held

in position by means of supports or brackets or insulating material as necessary.

j. After installation of cables, Engineer-in-charge shall check the complete works and

complete the Inspection checklist for cable installation works. ( See annex. 2)k. Engineer-in-charge shall arrange and request for inspection with the Owner’s

representative Residential Technical Officer (RTO) using approved Main con

Request for Inspection (RIN) form.

III. Approved Materials

A. Ladder, Tray and Trunking

Preferred Brand for Ladder

TrayTrunking

Lipko, Sakiya, Applicam, U-Li

B. Cables

LV Cables PVC insulated, non-sheathed and sheathed cables BS 6004, 600/1000V Electric cables having PVC insulation BS 6346. Performance requirement for cables required to maintain circuit integrity under fire conditions BS 6387, XLPE insulated and PVC sheathed cables. XLPE insulated and steel wire armoured PVC sheathed cables IEC 60502-1PVC insulated non-sheathed cables 450/750V SS358-3.

Preferred Brand Sigma, Draka/SCM, Furukawa, Radox, Tai Sin and Prysmian

2. Project organization for Health & Safety Control

(See annex. 2)

3. Health & Safety risks and controls

(Please refer to attach Risk assessment in respect to above scope of works – Annex.3)

4. Access / Egress

Proper scaffolding & ladder shall be provided for access into cable ladder/tray/trunking containment as applicable.

5. Lighting

Adequate temporary/task lighting shall be provided if work to be carried at night or at dark places.

6. Plant & Equipment

S/N Description Unit

1 Metal cutting saw 1 lot

2 Touch up material 1 lot

3 Screw driver 1 lot

4 Electrical drill with bits (only for surface installation works) 1 lot

5 File 1 lot

6 Diagonal-Cutting Pliers 1 lot

7 Open end Wrench 10 and 13 mm ends 1 lot

8 Side-Cutting Pliers 1 lot

9 Tape measure 1 lot

10 C - clamp 1 lot

11 P.P.E. – Personal Protective Equipment (safety helmet,Boots,gloves & safety vest ) 1 set per worker

*The above machinery & Equipment used quantity will be varied depending on site conditions and production rate.

7. Personnel Training Certificate(Annexure 5)

8. Waste management

The Rubbish which would be created from our scope of works will be disposed to the designated dumping ground.

9. Special Control measures

The following general control measures against Safety, Environment and Quality shall be required for our scope of work and special control measures are not applicable for us

Proper PPE must be worn at all time

Permit to work at height > 2m where applicable

Lifting operation permit (using crane) where applicable.

Confined space permit where applicable.

Approved work method statement and risk assessment will be made available to site. All

workers doing the work shall be briefed on this method statement and risk

assessment.

Appendix

ANNEX 1:

Checklistfor

Cable Containment Installation

ANNEX 2:

Checklistfor

Cable Installation

ANNEX 3:Project Organizationfor Health & Safety

Control

ANNEX 4:Risk Assessment

ANNEX 5:Personnel Training

Certificate