Electricity – General Safety Provisions – Green World Group: International course provider like NEBOSH IGC, IOSH MS and OSHA 30 hrs

1. Electric supply lines and apparatus, shall be of sufficient ratings, mechanical strength and so constructed, installed, protected, worked and maintained to ensure safety of human being, animals and property. IS and National Electrical Code shall be followed (R.29).

2. Supplier and consumer, both, will take due precautions to avoid danger from service lines and apparatus on consumer’s premises (R.30).

3. Suitable cut-outs (e.g. fuse) in fireproof receptacles shall be provided in every service line (other than earth lines) at consumer’s premises (R.31).

4. Earth and neutral conductors shall be identified to distinguish from live conductor and position of switches and cut-out shall be safe (R.32).

5. Earth connection (terminal) shall be provided near the point of start of supply and the consumer shall take steps to protect it from mechanical damage (R.33).

6. Bare conductors should be inaccessible with readily accessible switches to cut off power supply (R.34).

7. Danger notice in Hindi, English or local language with a sign of skull and bones (IS-2551) and the words ‘danger’ and ‘ volts’ is necessary near medium and higher voltage installation (i.e. above 250V). (R.35).

8. For the safety from supply lines and apparatus, earthing of lines, PPE to workers (gloves, rubber shoes, safety belts, ladders, earthing devices, helmets, line testers and hand lines, for protection from electrical and mechanical injury), and authorised working on live lines are necessary (R.36).

9. Voltage cut off switch (in one operation) is a must in every electric vehicle, crane, etc. and the metal rails, if any, should be electrically continuous and earthed (R.37).

10. Flexible cables to portable apparatus should be heavily insulated and well protected from mechanical damage. For single phase line the cable should be of 3 core and for 3 phase line, it should be of 4 core type with the distinguished ground connection. Metal covering, if any, should be earthed (R.38).

11. Insulating or protecting material of electric line should not be of such material that may produce noxious or flammable gases on excessive heating (R.39).

12. Street boxes should be free from influx of water or gas. They should be inspected regularly for that (R.40).

13. Different circuits should be distinguished from each other (R.41).

14. Voltage should not exceed the limits and AC-DC circuits should not come into contact with each other when live (R.42).

15. Fire extinguishers for electric fire, fire buckets with clean, dry sand, first-aid boxes, two or more gas masks to be used in the event of fire or smoke are necessary (R.43).

16. Notice of instructions to restore person from electric shock and an artificial respirator (resuscitation) necessary (R.44).

17. Fatal accident should be reported within 24 hours and non-fatal accident, in Annex-XIII, in 48 hours (R.44A).

18. Electric work shall be carried out by licensed electrical contractor under direct supervision of a competent person and a person holding permit by the State Government. Unauthorised work shall not be energised (R.45).

19. Inspection of installation at every 5 years by the Inspector. Annex-IXA is an inspection report Form (R.46).

Chapter-V (R.47 to 59) gives general conditions relating to supply and use of energy. Rule 51 for medium, high and extra high voltage installations should be referred.

Chapter-VI (R.60 to 62) for low and medium voltages (upto 650V) and Chapter-VII (R.63 to 73) for high and extra high voltage (more than 650V) provide for insulation resistance test, earth connection, ELCB, testing, operation and maintenance, condensers and supply to high voltage installation including X-ray unit, etc.

Chapter-VIII (R.74 to 93) gives important safety clearances (see Part 4.4 of Chapter-11) above ground and between conductors and provisions for material strength, stresses, joints, guarding, earthing, safety and protective devices (R.91 for safety of line when it breaks, unauthorised entry near overhead lines) etc.

Chapter-IX (R.94 to 108) is for electric traction, and provides for voltage supply to vehicle, insulation of lines, returns and sections, current density (less than 1.4 Amp/cm2) in rails, height of trolley-wire (more than 5.2 m high) etc.

Chapter-X (R.109 to 132) is regarding safety precautions while working in mines and oil-fields. They include plans, notices, lighting, communications, fire precautions, earthing, protective equipment, voltage limits (Hand lamp or electric interlocking 30V, portable apparatus 125V, at surface or in open 250V), safety with gas supervision etc.

Chapter-XI (R.133 to 142) gives relaxation and penalty provisions.


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