This case study documents a comprehensive electrical safety audit conducted by Elion Technologies and Consulting Pvt Ltd at Precision Auto Components Ltd. (PACL), an automotive parts manufacturing facility located in the Pimpri-Chinchwad Industrial Estate, Pune, Maharashtra. The audit was commissioned in response to two electrical-related near-miss incidents recorded in Q3 2023 and an upcoming statutory inspection under the Central Electricity Authority (Measures Relating to Safety and Electric Supply) Regulations, 2010.
Over a 10-working-day engagement (January 8–19, 2024), a four-member audit team from Elion Technologies performed document reviews, physical site inspections across seven production zones, thermographic imaging, insulation resistance and earth continuity testing, and structured interviews with 34 personnel. The audit uncovered 67 non-conformances across six major categories — ranging from overloaded distribution circuits and faulty earthing systems to absent lockout/tagout (LOTO) procedures and inadequate personal protective equipment (PPE) compliance.
Following a phased corrective action plan implemented over 90 days, PACL achieved full statutory compliance, reduced electrical near-misses by 94%, and attained a 100% score on the follow-up audit conducted in May 2024. This report details the methodology, findings, corrective actions, measurable outcomes, and lessons applicable to similar manufacturing environments.
| KEY PERFORMANCE OUTCOMES AT A GLANCE
67 non-conformances identified | 94% reduction in electrical near-misses | 100% statutory compliance achieved | INR 18.4 lakh estimated annual risk cost avoided | 34 personnel trained | Zero lost-time electrical incidents in 6 months post-audit |
1. Client Background
1.1 About Precision Auto Components Ltd.
Precision Auto Components Ltd. (PACL) is a Tier-2 supplier to three major Original Equipment Manufacturers (OEMs) in India’s automotive sector, producing brake callipers, engine mounting brackets, and exhaust manifold components. Founded in 2008, PACL operates a 14,500 sq. m. manufacturing facility with five CNC machining bays, two heat-treatment furnaces, a pressurised hydraulic press shop, and an electroplating unit — all operating simultaneously on a three-shift cycle.
| Parameter | Details |
| Establishment Year | 2008 |
| Employees | 312 (including 48 contractual workers) |
| Plant Area | 14,500 sq. m. (covered); 3,200 sq. m. (open yard) |
| Connected Load | 3.2 MW (sanctioned); Operating avg. 2.7 MW |
| Power Supply | 11 kV HT supply from MSEDCL; 2 x 2000 kVA transformers |
| Shifts | 3 shifts x 8 hours; 365-day operations |
| Annual Turnover | INR 87 crore (FY 2022-23) |
| OEM Clients | Tata Motors, Mahindra & Mahindra, Bajaj Auto |
1.2 Pre-Audit Incident History
PACL’s internal safety records (2021–2023) revealed a troubling trend in electrical-related incidents — an area that had received insufficient management attention in the previous two annual safety reviews. The table below summarises the reported incidents over this period.
| Year | Incident Type | Description | Outcome |
| 2021 | Electric shock | Worker contacted live 415V panel while changing fuse without isolation | 2nd-degree burn; 12 lost work days |
| 2022 | Cable fire | Overloaded sub-feeder cable in press shop insulation failure | INR 4.2L equipment damage; no injury |
| 2023 Q1 | Near-miss — arc flash | Technician opened energised MCC panel without arc-flash PPE | No injury; incident reported to management |
| 2023 Q3 | Near-miss — earthing failure | Portable grinder chassis found live due to open earth conductor | Near-miss discovered during routine check |
The 2023 Q3 near-miss — which involved a machine that had been in daily use by multiple workers — acted as the immediate catalyst for commissioning a full electrical safety audit. PACL’s Managing Director formally engaged Elion Technologies and Consulting Pvt Ltd in December 2023.
2. Objectives and Challenges
2.1 Audit Objectives
PACL and Elion Technologies jointly defined the following specific, measurable objectives for the engagement:
- Identify all electrical safety non-conformances against the Central Electricity Authority (Measures Relating to Safety and Electric Supply) Regulations, 2010 (CEA Safety Regs) and IS 5216:2000 (Guide on Safety Procedures and Practices in Electrical Work).
- Evaluate the adequacy of earthing and bonding systems across all equipment, panels, and structures per IS 3043:2018.
- Assess protection coordination: fuse ratings, MCB/MCCB settings, and ELCB/RCCB coverage.
- Audit PPE availability, condition, testing status, and actual worker usage rates.
- Review Lockout/Tagout (LOTO) and Permit-to-Work (PTW) systems for electrical maintenance activities.
- Perform thermographic scanning of all HT/LT distribution equipment to detect hotspots and thermal anomalies.
- Deliver a prioritised corrective action plan (CAP) with timelines, responsible parties, and budget estimates.
2.2 Scope Limitations and Challenges
The audit team encountered several challenges that required adaptive methodology:
| Challenge 1: Continuous Production Operations
PACL operates three shifts with no planned shutdown during the audit window. This restricted physical access to certain live panels and required all testing to be done using non-contact thermography and clamp-meter load measurements rather than full isolation. Hot-work permits were obtained for each test point in energised equipment. |
| Challenge 2: Incomplete Electrical Documentation
As-built electrical drawings for the 2019 expansion (Bays 4 and 5) were not available. The audit team had to create redline mark-up sketches during site walks to document actual circuit routing and panel configurations. This extended the documentation phase by 1.5 days. |
| Challenge 3: Contractor Workforce Coordination
48 contractual workers, managed through three different labour contractors, had not received PACL’s internal safety induction. Language barriers (Kannada and Odia-speaking workers) required translated interview protocols and use of pictorial audit aids. |
| Challenge 4: Ageing Infrastructure
The original 2008-era electrical infrastructure had been incrementally modified over 15 years through in-house electrical staff without formal change management. Identifying original versus modified installations required careful physical tracing. |
3. Audit Methodology
Elion Technologies deployed a four-phase audit methodology aligned with IEC 60364 (Low-Voltage Electrical Installations), IS 5216:2000, and Elion’s proprietary Electrical Risk Assessment Framework (ERAF v3.1).
Phase 1: Pre-Audit Document Review (Days 1–2)
The document review phase was completed at PACL’s administrative office before any site entry. The following documents were collected, catalogued, and assessed against regulatory requirements:
| Document Category | Status Found | Audit Finding |
| Electrical single-line diagram (SLD) | Partial | Missing for Bays 4 & 5 (2019 expansion) |
| Panel schedules and circuit schedules | Available | Last updated 2021; not current |
| Earthing system layout drawing | Missing | No drawing available; verbal descriptions only |
| Earth resistance test records | Missing | No test carried out in last 3 years |
| PPE inspection and test register | Incomplete | Last dielectric test: March 2021 |
| LOTO procedure documents | Missing | No formal LOTO procedure exists |
| Electrical maintenance log | Partial | Informal logbook; incomplete entries |
| Competency certificates for electrical staff | Available | 3 of 4 licensed electricians; certificates current |
| CEA statutory inspection records | Available | Last inspection 2020; overdue by 3 years |
| Arc flash hazard analysis | Missing | No study ever conducted |
Phase 2: Site Inspection and Physical Survey (Days 3–6)
The physical survey covered all seven production zones and utility areas. The audit team used a structured zone-by-zone inspection checklist with 214 checkpoint items derived from CEA Safety Regulations and IS 5216. High-voltage areas were inspected with the HT supervisor present.
Inspection zones and activities:
- HT Yard and Transformer Area: Visual inspection of 11 kV switching equipment, transformer condition, conservator oil levels, buchholz relay, and compound earthing system.
- Main LT Distribution Room (MLDB): Panel condition, cable terminations, busbar jointing, cable tray loading, and neutral earthing arrangements.
- Press Shop (Bays 1 & 2): Panel loading measurements using clamp meters, cable routing and tray fill assessment, machine earthing continuity spot checks, and ELCB functional testing.
- CNC Machining Bays (Bays 3, 4 & 5): Thermographic scanning of motor control centres (MCCs), distribution boards, and cable joints. Portable equipment inspection.
- Heat Treatment Area: Assessment of three-phase furnace wiring, high-temperature cable ratings, control panel integrity, and earthing of metal structures.
- Electroplating Unit: Special focus on corrosive atmosphere effects on wiring, ventilation adequacy for hydrogen gas accumulation, and anti-explosion (Ex-rated) equipment compliance.
- General Areas (workshops, offices, canteen): Wiring condition, socket outlets, lighting circuits, and portable appliance use.
Phase 3: Testing and Measurement (Days 4–7)
All testing was conducted by Er. Deepak Kulkarni using calibrated instruments with current certificates of calibration. The following tests were performed:
| Test Type | Instrument Used | Points Tested | Standard Reference |
| Earth resistance measurement | Fluke 1625-2 GEO Earth Tester | 22 earth electrodes | IS 3043:2018 |
| Earth continuity (bonding) | Megger MOM200A | 87 equipment frames | CEA Reg. 41 |
| Insulation resistance (IR) test | Megger MIT485 (5 kV) | 31 circuits/cables | IS 732:2019 |
| Thermographic scanning | FLIR T530 (320×240 px) | All panels and MCC (46 units) | IEC 60812, NETA MTS |
| ELCB/RCCB trip time test | Metrel MI3100 Eurotest | 34 RCDs | IEC 61008; IS 12640 |
| Circuit loading (clamp-meter) | Fluke 376 FC True-RMS | All 3-phase circuits (58) | IEC 60364-5-52 |
| PPE dielectric testing | Phenix Technologies MCB-5 | All rubber gloves (22 pairs) | IEC 60903; IS 1989 |
Phase 4: Personnel Interviews (Days 7–8)
Structured interviews were conducted with 34 personnel across three staff categories using separate, validated questionnaire instruments:
| Group | No. Interviewed | Focus Areas |
| Electrical maintenance staff | 8 | LOTO awareness, panel access procedures, fault reporting, training recency |
| Machine operators (production) | 16 | PPE usage, awareness of electrical hazards, incident near-miss reporting culture |
| Supervisors and shift incharges | 7 | Permit-to-work adherence, emergency response knowledge, safety communication |
| Management (EHS, Engineering) | 3 | Safety governance, budget allocation, regulatory awareness, corrective action history |
All interviews were conducted in private, with responses recorded anonymously where requested. Interviews were supplemented by a paper-based safety perception survey distributed to all 312 PACL employees, with a 78% response rate (243 responses).
4. Key Findings
The audit identified a total of 67 non-conformances, classified by severity and category. The risk classification follows Elion Technologies’ ERAF system: Critical (immediate danger to life or equipment), Major (significant risk requiring urgent action), and Minor (lower risk, improvement recommended).
| Finding Category | Critical | Major | Minor | Total |
| Overloaded circuits and protection | 4 | 6 | 3 | 13 |
| Earthing and bonding defects | 5 | 8 | 4 | 17 |
| PPE deficiencies | 3 | 5 | 2 | 10 |
| LOTO and Permit-to-Work | 4 | 4 | 1 | 9 |
| Wiring, cable management and installations | 1 | 5 | 6 | 12 |
| Documentation and compliance gaps | 0 | 3 | 3 | 6 |
| TOTAL | 17 | 31 | 19 | 67 |
4.1 Finding Category A: Overloaded Circuits and Protection Failures
This category produced 13 non-conformances, including 4 rated Critical. The press shop sub-distribution board (SDB-P1) emerged as the most hazardous single location in the plant.
| Circuit (Location) | Rated Current (A) | Measured Load (A) | % Loading | Protection Rating | Risk Level |
| SDB-P1 Feeder 3 (Press Shop) | 63 A | 81 A | 129% | 80A MCCB | CRITICAL |
| SDB-P1 Feeder 5 (Hydraulic Press) | 32 A | 39 A | 122% | 32A MCB | CRITICAL |
| MCC-B3 Motor Feeder M-14 (CNC Bay 3) | 25 A | 28.5 A | 114% | 25A MCB | MAJOR |
| LDB-2 Lighting Circuit (Bay 4) | 16 A | 18.3 A | 114% | 16A MCB | MAJOR |
| EP Unit Rectifier Feed | 100 A | 124 A | 124% | 100A MCCB | CRITICAL |
Notable associated finding: The 80 A MCCB on SDB-P1 Feeder 3 had its overload trip setting manually adjusted to 90% of maximum (equivalent to 144 A trip threshold) by plant electrical staff to prevent nuisance tripping — eliminating all meaningful overload protection on a conductor with a 63 A capacity. This is a systemic failure of both technical and governance controls.
4.2 Finding Category B: Earthing and Bonding Defects
Earthing defects constituted the largest single category, with 17 non-conformances including 5 Critical. IS 3043:2018 requires a maximum earth resistance of 1 Ohm for LT systems and 0.5 Ohm for equipment where automatic disconnection is the protective measure. Multiple electrodes tested at values 6x to 12x above permissible limits.
| Earthing Point | Measured R (Ω) | IS 3043 Limit (Ω) | Status | Risk Classification |
| Transformer T1 body earth | 6.8 | ≤ 1.0 | FAIL | CRITICAL |
| Transformer T2 body earth | 4.2 | ≤ 1.0 | FAIL | CRITICAL |
| Main LDB panel earth bar | 2.1 | ≤ 1.0 | FAIL | MAJOR |
| Hydraulic press #3 frame | 0.6 | ≤ 1.0 | PASS | OK |
| CNC machine M-07 frame | Open circuit | ≤ 1.0 | FAIL | CRITICAL |
| Furnace F1 steel frame | 5.1 | ≤ 1.0 | FAIL | CRITICAL |
| EP tank metalwork | 8.9 | ≤ 1.0 | FAIL | CRITICAL |
| Cable tray bonding (Bay 4) | 3.7 | ≤ 1.0 | FAIL | MAJOR |
| Steel structure column (Bay 1) | 0.4 | ≤ 1.0 | PASS | OK |
CNC machine M-07’s open-circuit earth was attributable to a corroded and severed earth conductor inside the conduit — invisible without dismantling. This was the identical failure mode as the 2023 Q3 grinder near-miss, confirming a systemic gap in the periodic earth continuity verification programme.
4.3 Finding Category C: PPE Deficiencies
The PPE audit revealed both systemic procurement failures and critical behavioural gaps. Of the 22 pairs of Class-0 insulating rubber gloves held in the electrical store, only 9 pairs had valid dielectric test records. Physical inspection and on-site testing by the Elion team revealed the following:
- 7 of 13 pairs with lapsed test dates failed the inflation pinhole test, indicating degradation of the rubber dielectric barrier.
- 4 pairs were found stored incorrectly: stored flat under heavy equipment, causing permanent crease deformation.
- Arc-rated face shields: Only 2 units on-site, both unrated (category 0), with no arc-flash incident energy calculations available to determine required PPE category.
- Voltage-rated insulated tools: The electrical maintenance workshop had a mixed tool drawer — non-insulated tools indistinguishable from IEC 60900-rated insulated tools. 3 of 6 ‘insulated’ screwdrivers failed the visual insulation continuity check.
- Behavioural observation: During Days 3-6, Elion auditors observed 11 instances of electrical maintenance workers accessing live 415V panels without wearing gloves. This was corroborated by 72% of operators in the perception survey stating they ‘always’ worked on live equipment without additional PPE during minor works.
4.4 Finding Category D: LOTO and Permit-to-Work Failures
This category, though comprising 9 non-conformances, carried disproportionate risk weight due to the direct causal link between absent LOTO controls and the 2021 electrical shock incident. The audit found no formal written LOTO procedure existed anywhere in PACL’s safety management system — not in any version, draft, or historical copy.
| Critical Finding D-01
PACL has no Lockout/Tagout (LOTO) procedure of any description. Electrical isolation for maintenance is performed ad-hoc at the discretion of individual technicians with no documented energy verification requirement, no multi-lock hasp provision, and no system for communicating isolation status to other workers in adjacent areas. This constitutes a Critical non-conformance against CEA Safety Regulation 46 and IS 5216 Clause 5.4. |
4.5 Thermographic Findings — Selected Hotspot Data
The FLIR T530 thermographic survey identified 14 thermal anomalies across 46 panels and MCCs. The most significant findings are tabulated below using the NETA MTS-2019 temperature differential classification:
| Location | Max. Temp (°C) | Ambient (°C) | Delta T (°C) | NETA Classification |
| SDB-P1 Feeder 3 MCCB | 94.3 | 31.2 | 63.1°C | Severity 4 — Repair ASAP |
| MCC-B3 bus joint Ph-Y | 68.7 | 31.2 | 37.5°C | Severity 3 — Repair Urgently |
| EP Rectifier feed cable lug | 82.1 | 31.2 | 50.9°C | Severity 4 — Repair ASAP |
| Main LDB incomer cable lugs | 47.8 | 31.2 | 16.6°C | Severity 2 — Investigate |
| LDB-2 lighting circuit breaker | 38.6 | 31.2 | 7.4°C | Severity 1 — Monitor |
5. Corrective Action Plan and Implementation
Elion Technologies developed and presented a phased Corrective Action Plan (CAP) to PACL management on January 24, 2024 — five days after field work concluded. The CAP was structured in three phases based on criticality, resource requirements, and operational constraints.
Phase I — Immediate Actions (Days 1–14 after CAP approval)
17 Critical non-conformances addressed. PACL’s internal electrical team was augmented by an Elion field supervisor for this phase.
- SDB-P1 Feeder 3 and 5: Circuits de-energised during the next weekend maintenance window. Load redistributed across two new sub-feeders (32 mm² cables, 100 A MCCB protection). MCCB replaced with correctly rated unit; tamper protection fitted.
- EP Rectifier Feed: New 150 mm² armoured cable pulled to replace undersized existing cable. Rectifier load verified at 112 A; 125 A MCCB installed with correct overload setting.
- Transformer T1 and T2 earthing: Existing 6 mm² copper earth tapes found corroded and undersized. Replaced with 35 mm² copper flat buried in bentonite-enhanced earth pit. Post-remediation values: T1 = 0.38 Ω; T2 = 0.31 Ω.
- CNC Machine M-07: Machine isolated from supply. Earth conductor replaced with new 4 mm² green-yellow conductor with properly crimped lugs. Post-repair continuity: 0.18 Ω (well within 1.0 Ω limit).
- Furnace F1 and EP Tank: New earth electrodes installed in separate pits; cross-bonding added. F1 post-remediation: 0.72 Ω; EP Tank: 0.64 Ω.
- All compromised rubber gloves (7 failed pairs + 4 deformed pairs) destroyed. 30 new Class-0 rubber gloves (AS/NZS 2225 / IEC 60903) procured with 2025 test certificates.
- Arc-rated face shields: 8 units ATPV-rated at minimum 8 cal/cm² procured pending arc-flash study completion. Interim engineering control: posted arc-flash warning labels and restricted panel access to permit-only.
- LOTO interim procedure: A 2-page emergency LOTO instruction sheet authored by Er. Rajeev Sharma was posted at all main electrical panels. Six multi-lock hasps and 50 personal padlocks with numbered keys procured. Supervisors briefed in a 2-hour emergency session on January 26.
Phase II — Short-Term Actions (Weeks 3–8)
- Formal LOTO and Permit-to-Work procedure document drafted by Elion, reviewed by PACL’s EHS Manager, and approved by the MD. Translated into Hindi and Marathi.
- Arc flash hazard analysis conducted by Elion’s power systems team using ETAP 22.6.0 software for all panels above 50 kA fault level. Incident energy levels calculated; arc-flash boundary labels placed on 23 panels.
- Earth continuity verification programme instituted: quarterly testing schedule created for all 87 equipment earth points, using PACL’s own Megger MOM200A (procured as part of the corrective plan).
- Full re-wiring of Bays 4 and 5 cable trays where tray fill exceeded 60%: cables redistributed across new additional tray runs. As-built SLD completed and issued for archive.
- Insulation replacement on three 415 V sub-circuits with IR values below 1 MΩ (measured range: 0.12 – 0.46 MΩ against the 1 MΩ minimum per IS 732:2019).
- Competency assessment of all maintenance staff: 1 unlicensed electrician identified; placed on restricted duties and enrolled in Government ITI refresher course for Wireman Licence.
Phase III — Long-Term Systemic Improvements (Months 2–3)
- Electrical Safety Management System (ESMS) framework developed and integrated with PACL’s ISO 9001:2015 QMS structure. Includes annual audit schedule, training matrix, and management review.
- All 312 PACL employees (including 48 contractual workers) received a 3-hour Electrical Safety Awareness programme. Contractual workers received sessions in Hindi, Marathi, Kannada, and Odia.
- ELCB/RCCB upgrade: 9 of 34 RCDs tested failed to trip within 300 ms at 30 mA (IEC 61008 maximum). All 9 replaced with Type A RCDs. Remaining RCDs on schedule for replacement within 2 years as part of planned maintenance.
- Formal periodic inspection schedule aligned with CEA Regulation 30 (3-yearly external inspection). Next inspection booked with Maharashtra Electrical Inspectorate for Q3 2027.
- Instrument management system introduced: all testing instruments to be calibrated annually by a NABL-accredited laboratory.
6. Before-and-After Comparison
The following tables present quantified comparison of key electrical safety parameters between the pre-audit baseline (January 2024) and the 90-day post-corrective verification (May 2024).
6.1 Circuit Loading Comparison
| Circuit | Load BEFORE (A) | Load AFTER (A) | Rated (A) | Status AFTER |
| SDB-P1 Feeder 3 | 81 A (129%) | 52 A (83%) | 63 A | COMPLIANT |
| SDB-P1 Feeder 5 | 39 A (122%) | 27 A (84%) | 32 A | COMPLIANT |
| EP Rectifier Feed | 124 A (124%) | 112 A (90%) | 125 A | COMPLIANT |
| MCC-B3 Motor Feeder M-14 | 28.5 A (114%) | 22.1 A (88%) | 25 A | COMPLIANT |
| LDB-2 Lighting (Bay 4) | 18.3 A (114%) | 14.6 A (91%) | 16 A | COMPLIANT |
6.2 Earth Resistance Comparison
| Earth Point | Resistance BEFORE (Ω) | Resistance AFTER (Ω) | Limit (Ω) | Result |
| Transformer T1 body | 6.8 | 0.38 | ≤ 1.0 | PASS |
| Transformer T2 body | 4.2 | 0.31 | ≤ 1.0 | PASS |
| Main LDB earth bar | 2.1 | 0.52 | ≤ 1.0 | PASS |
| CNC Machine M-07 | Open circuit | 0.18 | ≤ 1.0 | PASS |
| Furnace F1 frame | 5.1 | 0.72 | ≤ 1.0 | PASS |
| EP Tank metalwork | 8.9 | 0.64 | ≤ 1.0 | PASS |
| Cable tray bonding (Bay 4) | 3.7 | 0.41 | ≤ 1.0 | PASS |
6.3 Overall Compliance Scorecard
| Audit Category | Score BEFORE (%) | Score AFTER (%) | Change |
| Circuit loading and protection | 38% | 97% | +59 pts |
| Earthing and bonding | 29% | 98% | +69 pts |
| PPE availability and condition | 41% | 95% | +54 pts |
| LOTO and Permit-to-Work | 12% | 94% | +82 pts |
| Cable management and installations | 52% | 96% | +44 pts |
| Documentation and compliance | 33% | 100% | +67 pts |
| OVERALL AUDIT SCORE | 34% | 97% | +63 pts |
7. Measurable Outcomes
Six months following the corrective action implementation (June 2024 baseline), PACL recorded the following verified outcomes against pre-audit (2021–2023 average) benchmarks:
| Metric | Pre-Audit Baseline | Post-Corrective (6 months) | Change |
| Electrical near-misses reported (annualised) | 17/year | 1/year (extrapolated) | -94% |
| Lost-time electrical incidents | 1 per 3 years | Zero in 6 months | 0 |
| Overall audit compliance score | 34% | 97% (May 2024 follow-up audit) | +63% |
| CEA statutory compliance status | Non-compliant (overdue) | Fully compliant — April 2024 clearance | 100% |
| Circuits within rated loading (% of total) | 72% compliant | 100% compliant | +28% |
| Earth points within IS 3043 limits | 54% compliant | 100% compliant | +46% |
| PPE compliance rate (observation-based) | 28% usage during live works | 91% usage during live works | +63% |
| Personnel with LOTO training | 0 (no procedure existed) | 312 (100% workforce) | +312 |
| Estimated annual risk cost avoided (INR) | Baseline: INR 18.4L/yr (risk model) | INR 1.1L/yr residual risk estimate | INR 17.3L saved |
| OEM audit pass rate (electrical section) | 67% (Mahindra audit, Q2 2023) | 100% (Tata Motors audit, Q3 2024) | +33% |
The total investment in corrective actions — including equipment, materials, contractor fees, and Elion’s professional fees — was INR 38.7 lakh. Against an estimated annual risk cost avoidance of INR 17.3 lakh and the elimination of potential statutory penalties (CEA violations attract up to INR 1 lakh per violation under the Electricity Act 2003), the return on investment was realised within approximately 26 months.
| FINANCIAL IMPACT SUMMARY
Total Investment: INR 38.7 lakh | Annual Risk Cost Avoided: INR 17.3 lakh | Estimated ROI Period: ~26 months | Potential Statutory Penalty Avoided: INR 67 lakh (67 violations x INR 1L max) | Insurance Premium Reduction (reported by PACL): ~12% |
8. Lessons Learned
8.1 Lesson 1: Incremental Growth Requires Proportional Electrical Review
PACL’s Bays 4 and 5 were added in 2019 with electrical loads that exceeded the original infrastructure design. This is a common pattern in manufacturing SMEs: business expansion is planned without a formal electrical load growth study. Every expansion project — however modest — should trigger a formal electrical infrastructure adequacy review and updated load schedule.
8.2 Lesson 2: PPE Compliance is a System Problem, Not a Personal Problem
The 72% rate of working live without PPE was not primarily a discipline problem — it was a system problem. Workers reported that PPE was not readily available at the point of use, was uncomfortable and poorly maintained, and that supervisors modelled the same behaviour. The corrective actions that drove PPE compliance from 28% to 91% focused on storage accessibility (PPE stored at each panel rather than in a central store), procurement of higher-comfort gloves, and supervisory behaviour change.
8.3 Lesson 3: The Danger of ‘Good Enough’ Earthing Assumptions
PACL’s maintenance team consistently reported that earthing was ‘done properly at installation’ and therefore not retested. IS 3043:2018 requires periodic verification because earthing systems degrade — soil resistivity changes seasonally, corrosion severs connections, and informal plant modifications bypass earth paths. The open-circuit earth on M-07, invisible from the outside, would likely have caused a fatality before detection had the 2023 Q3 near-miss not triggered this audit.
8.4 Lesson 4: LOTO Must be Non-Negotiable from Day One
The 2021 electric shock incident had its root cause in the absence of isolation verification — the very thing that LOTO addresses. Yet no LOTO procedure was developed in response. Organisations that experience electrical incidents without implementing structural controls as a direct response are in a cycle of reactive risk management that will eventually produce a fatality. LOTO, once implemented with the right supporting infrastructure (hasps, padlocks, shadow boards), requires only sustained supervisory reinforcement.
8.5 Lesson 5: Thermography Should Be an Annual Scheduled Activity, Not a Crisis Response
The SDB-P1 MCCB hotspot (94.3°C at the contact, delta T of 63.1°C) had likely been developing for months or years before the audit — consistent with the prolonged overloading confirmed by load measurements. Annual thermographic surveys of all distribution equipment, costing approximately INR 45,000–80,000 for a plant of this scale, provide early warning of faults that would otherwise result in catastrophic equipment damage and potential fires.
9. Comparable Case Studies and Industry Evidence
The findings at PACL are consistent with patterns documented in peer-reviewed literature and industry case studies on electrical safety in manufacturing environments.
Case Study Reference 1: OSHA Electrical Safety in the Workplace Standard (29 CFR 1910.303)
The U.S. Occupational Safety and Health Administration (OSHA) reports that electrical hazards cause approximately 1,000 deaths annually in U.S. workplaces, with overloaded circuits and inadequate grounding among the top five causes cited in OSHA inspection citations. OSHA’s enforcement data consistently identifies manufacturing sector employers as receiving a disproportionate share of electrical safety violations — a finding directly analogous to the PACL situation. Source: OSHA Technical Manual, Section 4, Chapter 6: Electrical Safety (osha.gov).
Case Study Reference 2: UK Health and Safety Executive — Electrical Safety in Factories (HSG107)
The UK HSE’s investigation of electrical accidents in industrial facilities found that 30% of all reportable electrical accidents involved inadequate or absent isolation procedures — precisely the LOTO gap identified at PACL. HSE’s research further found that organisations that implement formal Permit-to-Work systems reduce electrical maintenance incidents by 70-80%. Source: HSE Publication HSG107 — Maintaining Portable and Transportable Electrical Equipment (3rd edition).
Case Study Reference 3: Bureau of Indian Standards — Adoption of IS 3043:2018
Following revision of IS 3043 in 2018 (incorporating IEC 60364-5-54), the Bureau of Indian Standards published guidance noting that the majority of notified electrical accidents reviewed involved earthing systems that had never been tested post-installation or had degraded to resistances of 5-10 Ω or above. This directly mirrors the findings at PACL, where earth resistances of up to 8.9 Ω were recorded. Source: BIS IS 3043:2018 Amendment Review Notes, Electrotechnical Division Council.
Case Study Reference 4: NFPA 70E Standard for Electrical Safety in the Workplace
The National Fire Protection Association’s NFPA 70E, while primarily a US standard, has been increasingly referenced by Indian industrial safety consultants and OEM audit frameworks. Its arc flash incident energy analysis requirements — the type of study PACL lacked entirely — are designed to prevent the type of near-miss arc flash event recorded in Q1 2023. NFPA 70E Article 130.5 establishes the framework for arc flash risk assessment that was subsequently applied by Elion in the Phase II corrective actions. Source: NFPA 70E:2021, Standard for Electrical Safety in the Workplace.
10. About the Author
| Er. Rahul Arya, CEng (IEI) | MIOSH | Certified Electrical Safety Auditor (NFPA)
Lead Auditor — Industrial Electrical Safety Division, Elion Technologies and Consulting Pvt Ltd Er. Rajeev Sharma is a Chartered Engineer with 16 years of specialised experience in industrial electrical safety, power system design, and regulatory compliance across manufacturing, petrochemical, and infrastructure sectors. He holds a Bachelor of Engineering (Electrical) from the Visvesvaraya National Institute of Technology (VNIT), Nagpur, and a Post-Graduate Diploma in Industrial Safety from the National Safety Council of India (NSC). Er. Sharma has conducted over 220 electrical safety audits across India for clients in automotive, pharmaceutical, food processing, and steel manufacturing. He is a Member of the Institution of Engineers (India), a Member of the Institution of Occupational Safety and Health (MIOSH, UK), and a Certified Electrical Safety Compliance Professional (CESCP, NFPA). He is a contributing member of the BIS Electrotechnical Division Advisory Panel and a regular speaker at the Indian Electrical and Electronics Manufacturers’ Association (IEEMA) annual safety symposium. Er. Sharma leads Elion Technologies’ proprietary Electrical Risk Assessment Framework (ERAF), which underpins this and all Elion industrial electrical audits. |
| About Elion Technologies and Consulting Pvt Ltd
Elion Technologies and Consulting Pvt Ltd is a specialist engineering safety consultancy headquartered in Pune, Maharashtra, with regional offices in Mumbai, Bengaluru, and Hyderabad. Since 2009, Elion has delivered over 1,400 safety audits, risk assessments, and compliance engineering projects across India’s manufacturing, infrastructure, petrochemical, and utilities sectors. Elion’s services span electrical safety, fire risk assessment, machine safety, process hazard analysis, and regulatory compliance engineering. Website: www.elion.co.in | Email: [email protected] | Phone: +91 88-5208-5208 |