In most industrial facilities, the Lightning Protection System (LPS) gets installed during construction - and then never thought about again. It sits on the roof, aging quietly, while the plant around it changes and grows. New structures go up. Building extensions are added. Equipment layouts shift. And the LPS that was "compliant at installation" becomes progressively inadequate - without anyone noticing.
Recent field assessments by Zing Enterprises reveal that LPS adequacy and coverage are becoming a serious, and frequently overlooked, safety concern in factories across India.
Why Lightning Risk Is Underestimated
Lightning is what engineers call a "low-frequency, high-consequence" risk. It doesn't happen often. But when it does, the consequences are severe:
- Fire and explosion hazards - lightning strike energy in a poorly protected facility can ignite flammable materials instantly
- Damage to electrical systems and instrumentation - surge energy travels through earthing systems and destroys sensitive control equipment
- Production downtime - weeks or months of lost production following a major strike
- Risk to human life - step potential and touch potential hazards during a strike can be fatal
Because these events are infrequent, many plant managers consider them unlikely enough to ignore. This is the wrong calculation.
What Zing Enterprises Has Found in Field Assessments
Across multiple recent industrial facility assessments, our team has documented the following common gaps:
- Improper placement of air terminals (lightning arresters) - often installed in positions that leave large areas of the structure outside the protection zone
- Inadequate coverage of critical zones - process areas, control rooms, and hazardous material storage with insufficient protection
- Poor or deteriorated earthing systems - corroded connections, high earth resistance, broken conductors
- Incorrect down conductor routing and jointing - creating high impedance paths that redirect energy unpredictably
- Non-uniform or physically damaged conductor laying - compromising the path of least resistance
- Absence of periodic inspection and testing - no record of when, or whether, the system has ever been validated since installation
The Critical Insight: Installing an LPS Is Not Enough
The most important takeaway from our assessments is this: an installed LPS is not necessarily a functioning LPS.
Effectiveness depends on four things working together:
- Correct initial design with proper coverage zones
- Intact and low-resistance earthing system
- Validated protection coverage for the current building footprint and layout
- Periodic inspection and testing on a defined schedule
Any change in structure height, building footprint, or major equipment layout demands a fresh reassessment of protection zones. A factory that was compliant in 2018 may have significant coverage gaps today simply due to extensions or new buildings erected since then.
The Right Way Forward
- Re-evaluate your LPS design against the current plant structure and risk profile
- Measure and verify earthing resistance and conductor continuity
- Validate coverage zones against current building layout
- Establish a periodic inspection and testing schedule
- Integrate LPS into your broader electrical safety audit program
At Zing Enterprises, our team assesses, redesigns, and validates Lightning Protection Systems to ensure true protection - not just the appearance of compliance.
When did you last validate your LPS? Contact our electrical safety team for a comprehensive LPS assessment.