Lightning Protection System Maintenance Checklist

Use this Lightning Protection System Maintenance Checklist for annual LPS inspection of air terminals, earth electrodes, bonding, and surge protection devices.

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Lightning Protection System Maintenance Checklist



Pre-inspection Preparation

1. Previous inspection reports, LPS design drawings, and risk assessment documents are available for reference.


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2. Any changes to the building structure, rooftop equipment, or services since the last inspection are noted and assessed for impact on LPS coverage.


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3. Access arrangements for all roof areas, plant rooms, and external ground-level earth electrode locations are confirmed.


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4. PPE appropriate for work at height and rooftop inspection is worn.


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Air Terminals (Lightning Rods And Strike Receptors)

1. All air terminals are present at the locations shown on the LPS design drawings.


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2. Air terminals are securely fixed and correctly orientated with no signs of loosening or movement.


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3. Air terminal tips are undamaged and free from corrosion, deformation, or blunting.


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4. Bases and fixings are free from corrosion, cracking, or deterioration.


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5. No new structures, plant, or rooftop equipment has been installed that falls outside the protected zone of the existing air terminals.


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Down Conductors

1. All down conductors are present, correctly routed, and continuous from air terminals to earth electrodes.


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2. Down conductors are securely fixed to the building structure at the correct intervals with no sagging or detachment.


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3. All conductor joints and clamp connections are tight, corrosion-free, and showing no signs of mechanical damage.


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4. Test clamps or inspection joints are present at ground level on each down conductor for earth resistance testing.


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5. Conductors passing through the building fabric are correctly protected and sleeved.


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6. No down conductor shows signs of melting, burning, or severe corrosion that would indicate a previous strike has compromised it.


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Earth Electrodes And Grounding System

1. Earth electrode locations match the LPS drawings.


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2. Test pit covers or access chambers are present, accessible, and in good condition.


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3. Earth electrode connections are tight, free from corrosion, and protected where required.


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4. Earth electrode resistance is measured at each test point using the appropriate method and results are recorded.


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5. Total earth resistance of the LPS meets the standard required by applicable design specifications (typically 10 ohms or less).


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6. Where multiple electrodes are installed, the interconnecting ring or mesh conductors are intact and correctly bonded.


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Bonding Connections

1. All metallic structures on or within the building that require bonding to the LPS are connected (rooftop plant, pipework, structural steelwork, HVAC equipment, cable trays).


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2. Bonding conductors are the correct size and type per the LPS design.


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3. All bonding connections are tight, corrosion-free, and mechanically sound.


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4. Equipotential bonding at service entry points (gas, water, electrical) is present and in good condition.


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Surge Protection Devices (SPDs)

1. SPDs are installed at the locations specified in the LPS design (service entry points, distribution boards, sensitive equipment).


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2. SPD status indicators show normal operation (no fault, replacement, or alarm signals active).


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3. SPD enclosures are undamaged and free from moisture ingress.


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4. SPD disconnects are in the closed/on position.


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5. Any SPDs that have operated or show end-of-life indication are flagged for replacement.


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Post-inspection Documentation

1. All inspection findings, measurements, and test results are recorded in full.


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2. Defects are categorised by severity and remedial actions are recommended with suggested timeframes.


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3. Photographs of defects, connections, and test points are captured as evidence.


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4. The completed inspection report is signed by the inspector and provided to the building owner or facilities manager.


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5. Date of next recommended inspection is confirmed and recorded.


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Checklist by GoAudits.com – Please note that this checklist is intended as an example. We do not guarantee compliance with the laws applicable to your territory or industry. You should seek professional advice to determine how this checklist should be adapted to your workplace or jurisdiction.

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