METHOD STATEMENT FOR CABLE TRAY INSTALLATION
1.0 OBJECTIVE
To provide guide lines for erection of all types of cable trays or cable trays with all
accessories viz. Bends, Tees, Cross. The types of cable trays /cable trays are as
follows:
1. Perforated /Solid Type Cable Trays of all sizes.
2.0 REFERENCE:
1. Approved Drawings
2. Manufacturers Specifications
3.0 INSTRUMENTS/TOOLS & PLANTS:
PP ropes, scaffolding, drilling machine & spanner sets, Loading/Unloading tools and
tackles.
Sl.No. Procedure Responsibility Check By
1. Prior to cable tray installation works, complete all the Site Engineer Site-in-charge
erection of cable tray supports.
2. Clean the cable tray supports through the entire route of the Site Engineer Site-in-charge
cable trays.
3. Examine the drawing of cable tray layout Site Engineer Site-in-charge
drawing, with respect to the general layout
4 Survey the entire route of cable trays for Site Engineer Site-in-charge
existing hindrance at site due to other system
works viz. piping, air ventilation etc.
5 Report any Interference to the erection agency Site Engineer Site-in-charge
of the client.
6 Check that support installation for straight runs Site Engineer Site-in-charge
(i.e. other than accessories) is over and Support
Erection Report is completed and signed.
7. Shift the Cable trays required as per approved Site Engineer Site-in-charge
drawings from stores to the locations either
manually or by a truck .Not more than three
days inventory shall be stored at site.
8 Carry out Physical verification for any damage. Site Engineer Site-in-charge
9 Cut the Cable trays with hack saw to proper Site Engineer Site-in-charge
length required at site and avoid sharp edges
and make necessary holes for couplers, drilling
machines.
10 No where gas cutting should be done. Site Engineer Site-in-charge
11 Place the Cable trays & accessories on the Site Engineer Site-in-charge
supports; join them by coupler plates/ fishplates
and nut, bolts & washers as per approved
drawing.
12 Align the Trays properly and fix on the supports Site Engineer Site-in-charge
with clamps as per approved drawings.
13 Erect the Support for accessories as per support Site Engineer Site-in-charge
erection procedure
14 Complete the Cable Tray earthling as per the Site Engineer Site-in-charge
approved procedure.
15 Number the cable trays as per approved layout Site Engineer Site-in-charge
drawing of latest revision and cable installation
note.
METHOD STATEMENT FOR CABLE TRAY INSTALLATION
Sl.No. Procedure Responsibility Check By
16 Provide with GI wire mesh enclosure to all floor Site Engineer Site-in-charge
openings of cable trays up to a height of 2 m for
physical protection of personnel
17. If covering of the cable trays are Site Engineer Site-in-charge
mentioned in the approved GA
drawing, execute the same after
completion of cable laying and
final dressing
18 PRECAUTION: Site Engineer Site-in-charge
1. Bolts nuts etc. to be provided immediately after erection
of cable trays, and duly tightened.
2. Cable trays to be properly stored in erection location.
3. Loose materials inside the cable tray to be removed.
4.While working at height safety belt to be used
5. Proper scaffolding to be made while working.
19 Safety Measures:
1. Work permit to be taken before start of the work. Tool box meeting to be
ensured everyday for the said work.
2. Adequate area lighting to be ensured in all the work places including sub
station before start of the works. For Shifting of Cable trays from storage yard
to work place, proper lifting tools & tackles hydra & truck / trailor with good
condition to be ensured and the same to be certified by competent person.
3. Proper stacking of the cable trays to be ensured near the work place.
4. Transportation supervisor should be made responsible to guide the trailor &
alert the people during transportation.
5. Cable tray loading and unloading to be done manually only.
6. All the cut outs should be closed and edge protection to be ensured in the
working area.
7. Proper scaffold to be installed for the areas of work at height & proper ladder
to be used for access.
8. Proper manual handling procedure to be followed during the lifting of cable
tray support from ground to elevated platform with the help of pp rope.
9. Life line to be tied while work at height. Workers to ensure proper PPEs before
start of work. Fall arrester system has to be ensured while doing the vertical
cable tray erection.
10. No lose materials like nut bolts, coupler plates, spanners washers etc should
be left on the trays or working platform. Separate bags should be used to keep
these materials while at work. If required any material should be brought to the
top with the help of only PP rope.
11. Welding machine to be connected to proper power distribution board with
ELECB, metal clad plug and socket, doubly earthed. Earthling cable to be
provided with crimping lug.
12. Proper house keeping to be maintained and fire extinguishers to be provided in
sub station area.
13. Hose of the gas cutting set to be checked by soup solution and hose clamp to
be used. Flash back arrester to be ensured at both torch and cylinder end.
Correct size nozzles to be ensured and proper clearance to be maintained
between job and nozzle. Condition of the regulator, hose and torch to be
checked. Stone lighter to be used.
14. Grinding Wheel rpm to be checked and to be ensured for correctness. Grinding
m/c wheel guard is to be ensured.
15. Proper PPE’s are to be ensured for all the activities.
