🧾 DETAILED NOTES
1️⃣ Introduction
Electrical systems in mines—including transformers, substations, pumps, cables, switchgear, and drilling machines—pose significant hazards. Accidents caused by shock, arc flash, fire, short circuit, or equipment failure can be fatal. DGMS mandates immediate intimation (reporting) of all electrical accidents to ensure investigation, corrective action, and statutory compliance.
2️⃣ Types of Electrical Accidents
- Electric shock
- Arc flash / arc blast
- Fire due to electrical fault
- Cable failure
- Transformer explosion
- Earthing failure
- Contact with live conductor
3️⃣ Legal Framework for Accident Intimation
| Reference | Description |
|---|---|
| The Mines Act, 1952 – Sec. 23 | Notice of accidents |
| CMR 2017 – Regulation 131(1) | Reporting of electrical accidents and dangerous occurrences. (Note: Reg 132 in prompt, but 131 is also highly relevant to electrical safety installations). Reg 9 covers general reporting. |
| MMR 1961 – Regulation 9 | Notice of accidents. |
| Indian Electricity Rules – Rule 44A | Accidents to be reported to Electrical Inspector and DGMS. |
| DGMS Circular 2 of 2014 | Standard format and time limits for intimation. |
4️⃣ What is “Intimation of Accident”?
It means officially reporting an electrical accident to DGMS and other authorities within prescribed time limits. This includes: Fatal accidents, Serious injuries, Shock incidents, Electrical fires, Dangerous occurrences, and Near-miss events involving electricity.
5️⃣ Time Limit for Intimation
- Fatal accidents: Immediately / within 24 hours
- Serious injuries: Within 24 hours
- Other electrical incidents: Within 24 hours (as dangerous occurrences)
Telephonic / email intimation must be followed by written notice in the prescribed form.
6️⃣ Forms Used
- Form IV – Notice of accident (Fatal/Serious)
- Form V – Notice of Dangerous Occurrence (e.g., electrical fire, cable burst)
7️⃣ Who Must Be Notified?
DGMS requires the mine management to notify:
- DGMS Regional Office
- Chief Inspector / Electrical Inspector (State/CEA)
- Local Police Station (in case of fatality)
- Owner / Agent
8️⃣ Responsibilities
| Role | Duty |
|---|---|
| Manager | Ensure immediate intimation & preserve the accident site. |
| Electrical Engineer | Inspect failure, isolate circuit, submit technical report. |
| Safety Officer | Conduct accident analysis & maintain registers. |
| DGMS Inspector | Investigate, analyze, and recommend safety measures. |
9️⃣ Preventive Measures
- Use flameproof and intrinsically safe apparatus in gassy mines.
- Maintain earth continuity and insulation resistance tests.
- Follow Lockout/Tagout (LOTO) before maintenance.
- Conduct monthly inspection by electrical supervisor.
- Display Danger Notices and provide earthing pits.
- Ensure compliance with DGMS Circular 1/2018 for isolation and testing.
⚙️ QUICK ONE-LINERS (Revision)
- Sec. 23 Mines Act – accident notice.
- Electrical accidents reported within 24 hours.
- Form IV (Fatal/Serious) or Form V (Dangerous Occurrence) is used.
- DGMS + Electrical Inspector must be informed.
- No equipment should be disturbed until DGMS inspection.
- Arc flash, cable fire also reportable as Dangerous Occurrence.
- CMR Reg. 131/132 cover electrical safety & reporting.
- Manager responsible for intimation.
- Preserve accident site.
- Investigation must include RCA & preventive measures.
🧩 DESCRIPTIVE MODEL QUESTION & ANSWER
Q. Explain the procedure for intimation and reporting of electrical accidents in mines as per DGMS and statutory provisions.
Answer:
As per Section 23 of the Mines Act, 1952, and Regulation 9 of CMR 2017, every electrical accident causing death or serious injury must be intimated to DGMS within 24 hours. As per Rule 44A of IE Rules, it must also be reported to the Electrical Inspector.
The Manager must send the notice in Form IV and preserve the accident site. For dangerous occurrences like electrical fires (even without injury), notice is sent in Form V. DGMS Circular 2/2014 provides the standard format. Failure to report is a punishable offense.
🧮 25 DGMS-Based MCQs (5 Options Each)
Q1. Section of Mines Act dealing with accident intimation:
Q2. Electrical accident notice must be sent within:
Q3. Form for accident intimation (Fatal/Serious):
Q4. Who must be notified in case of fatal electrical accident?
Q5. Electrical incident reporting falls under:
Q6. Which is a notifiable accident/dangerous occurrence?
Q7. Site of accident should be:
Q8. DGMS intimation done by:
Q9. A near-miss involving electricity (e.g., flashover with no injury) is reported as:
Q10. Technical report prepared by:
Q11. Accidents must also be reported to:
Q12. Serious electrical injury intimation time:
Q13. Form V is used for:
Q14. Common cause of electrical fatality:
Q15. Arc flash leads to:
Q16. Accident register maintained by:
Q17. Which equipment causes electrical accidents?
Q18. Earthing system prevents:
Q19. Electrical fire is:
Q20. DGMS investigates:
Q21. Failure to report accident leads to:
Q22. Shock without injury:
Q23. Electrical accident investigation includes:
Q24. DGMS circular for electrical safety reporting format:
Q25. Purpose of intimation:
🔗 INTERNAL LINKS
| Related Topic | Read More On... |
|---|---|
| Electrical Safety | Electrical Safety & Accident Investigation |
| LOTO | Lockout/Tagout (LOTO) Procedures |
| Grounding | Grounding Regime for Power Supply |
| Accident Reporting | Criteria to Determine Accidents (Statistical/Non-Statistical) |
⚡ Report Electrical Accidents Promptly – Save Lives, Stay Compliant!
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