1. “Lighting system in ACSCR Drilling Rig”
WELcome
A presentation on:
“Lighting system in ACSCR Drilling Rig” by
Mr. Dhritiman Nath
Trainer
Mr. D.R.Borgohain

2. Contents
1. Introduction 2. Illumination level 3. Area lighting circuits 4. Hazardous area lighting system 5. Single line power flow diagram for hazardous area lighting 6. Types of light fitting used in hazardous area 7. Lighting circuits in safe area 8. Components used 9. Brief Summary

3. Introduction Visited S-3 rig , LOC – NLJ on 09/02/2015
Observed and identified Area lighting system in the rig along with other assignments.
The drilling operation is a 24 hours continuous
process: “After spudding in, till the final depth is reached in
a particular location”.
There are different equipments located in different
areas within the well site. Sufficient illumination level
is required for safe working during the drilling operation.

4. Illumination level As per data obtained from S-7 RIG,LOC: HXI-H
Pump House Shed : lux
Diesel tank area transfer Pump : lux
Derrick floor : lux
Pipe rack : lux
Staircase : lux
Monkey board : lux
PCR
ACPCR : lux
DCPCR : lUX
Compressor shed : lux
Chemical loading area : lux
Mud tank & Mud return channel area : lux
Sub-structure : lux
Engine rooms : lux

5. area lighting circuits
Lighting circuits in a Drilling rig are classified into two categories –
a) Hazardous Area lighting
b) Safe Area lighting
The hazardous area lighting circuit is designed to meet the standard as per CEA(safety and electric supply) Regulations, The different working areas are –
a) Derrick floor, b) Mast,
c) Cellar, Shale shaker, d) Desander,
e) Desilter, f) Mud tank,
f) Mud pump etc. fall within a radius of 30 mtrs from cellar pit.
The safe Area lighting includes Bunk houses, crew hut and the areas fall beyond the radius of 30 mtrs from the cellar pit.

6. Hazardous Area Lighting system
The complete lighting system works on 230 VAC, Ph to Ph, 50Hz.
The 230VAC Ph- Ph, 50Hz is used as per CEA Regulation Ch-IX, Regulation 102, II, b.
Lighting circuit consists of 20 no. of circuits.

7. Single Line power flow diagram for Hazardous area lighting

8. Two lighting transformers are used to supply power to hazardous area lighting.
60 KVA,
415/230 volts,3-phase,50 Hz
Dyn11

9. Types of Light fittings USED IN HAZARDOUS AREA
Type of fitting
Type
Flameproof well glass
fitting
160 W MLL
Flameproof HPMV flood light
250 W
Red aviation warning lamp fittings(LED)
10 cd
Flameproof bulk head fittings

10. Different Fittings
FLP fittings

11. Lighting in the safe area

12. Two isolation transformers are used to give power supply to safe area lighting.
30 KVA,
415/415 Volts,3 phase,50 Hz
Dyn11
Lighting system is operating at 230 V ,50 Hz
Safe area lighting includes bunk houses , security hut, flood lights etc.

13. Different fittings
Son fitting Non metallic tube light
fitting

14. Components USED Plugs, Sockets and Cables:
1.Appleton plug and sockets(20A, 250 V)
2. BCH plugs(DS1) and sockets.(DS-2),16A,415/240
volts)
3. 3x 1.5 sqmm, EPR insulated, CSP Sheathed cable is used for
lighting.
4. Double compression cable glands for glanding of the cables for
the light fittings.
5. MCCB – 100A,125 A
6. RCBOs 20 Amps , 300 mA.

15. BRIEF Summary Importance of lighting in a drilling rig
Various areas of lighting in a drilling rig
Single line diagram
Various light fittings
Equipment and components used

16. Thank You