In construction engineering, plant and machinery are the heartbeat of the job. Excavators, telehandlers, dumpers, rollers, generators, compressors, and specialist attachments keep programmes moving and margins intact. When plant goes down, you do not just lose the machine—you lose time, labour efficiency, subcontractor coordination, and sometimes the contract itself.
Plant insurance (often arranged as Contractors’ Plant & Machinery insurance, hired-in plant cover, or as part of a wider construction engineering insurance programme) is designed to protect you financially when something goes wrong. But insurers also look closely at how preventable a loss was. Better controls can reduce claims frequency, improve renewal terms, and make it easier to secure cover for higher-risk operations.
Below are the top 10 plant insurance claims seen across construction engineering, plus practical prevention steps you can implement on real sites.
What happens: Plant is stolen overnight, during breaks, or when a site is left unsecured. Drive-away theft is common with telehandlers, excavators, and dumpers—especially when keys are left accessible.
Why it is costly: Stolen plant can halt critical path activities. Replacement lead times can be weeks, and hire costs spike at short notice.
How to prevent it:
Layered site security: fencing, locked gates, lighting, and CCTV where feasible.
Key control: a strict “keys off, keys locked” policy; no keys stored in cabs.
Immobilisers and trackers: Thatcham-approved trackers and immobilisers reduce theft risk and can improve insurer appetite.
Plant parking strategy: park machines close together, bucket down, against barriers, and away from public access.
Out-of-hours checks: security patrols or remote monitoring for higher-value sites.
What happens: Buckets, breakers, augers, grabs, and specialist attachments are stolen because they are easy to move and often left unsecured.
Why it is costly: Attachments are expensive and often critical to specific tasks. A missing attachment can stop a job even if the base machine is still available.
How to prevent it:
Secure storage: lockable containers or cages for attachments.
Marking and identification: asset marking, serial number recording, and photographic logs.
Chain and lock systems: heavy-duty chains and ground anchors for high-value attachments.
Inventory discipline: daily “end of shift” plant and attachment checks.
What happens: Machines collide with structures, vehicles, or site infrastructure. Overturn incidents occur on slopes, soft ground, or when lifting loads beyond safe limits.
Why it is costly: Repairs can be significant, and the incident may trigger third-party liability exposures too.
How to prevent it:
Competent operators: verify tickets/competence (e.g., CPCS/NPORS) and provide site-specific inductions.
Traffic management: segregated routes, banksmen, one-way systems, and clear signage.
Ground assessment: check bearing capacity, voids, and slope stability—especially after heavy rain.
Lift planning: for telehandlers and cranes, follow a documented lift plan and load charts.
Near-miss reporting: treat near misses as leading indicators and act quickly.
What happens: Hired equipment is returned damaged, or the hire company alleges damage occurred during your hire period. Disputes can arise around “fair wear and tear” versus damage.
Why it is costly: You may face repair charges, loss of hire, and admin costs. If the contract terms are unfavourable, you could be liable even when fault is unclear.
How to prevent it:
Pre-hire inspection: document condition with photos/video and a signed checklist.
Daily checks: record operator checks and defects.
Clear responsibility: ensure supervisors understand who is accountable for reporting damage.
Contract review: check hire terms, excesses, and any “indemnity” clauses.
What happens: Engines, hydraulics, transmissions, and cooling systems fail due to missed servicing, contaminated fuel, or ignored warning signs.
Why it is costly: Insurers may scrutinise maintenance records. Some policies exclude wear and tear or gradual deterioration.
How to prevent it:
Planned maintenance schedule: follow manufacturer intervals and keep records.
Daily pre-start checks: fluids, leaks, hoses, tyres/tracks, warning lights.
Defect reporting culture: make it easy to report issues without blame.
Quality consumables: correct oils/filters and clean fuel storage.
What happens: Fires start from electrical faults, fuel leaks, hot exhausts, debris build-up, or hot works nearby. Battery-related incidents are increasing with newer equipment.
Why it is costly: Fire can total a machine and spread to other plant, materials, or structures.
How to prevent it:
Housekeeping: remove debris, oil-soaked rags, and combustible build-up.
Hot works controls: permits, fire watch, and separation distances.
Fire suppression: consider onboard suppression systems for high-risk plant.
Extinguishers and training: correct extinguisher types and operator training.
Charging safety: designated charging areas and inspection of cables/chargers.
What happens: Plant is damaged by floodwater, deep excavations filling, burst water mains, or working near rivers and coastal sites.
Why it is costly: Water damage can destroy engines, electronics, and hydraulics. Drying and decontamination are time-consuming.
How to prevent it:
Weather monitoring: plan for heavy rainfall and storm warnings.
Site drainage: pumps, channels, and maintained silt control.
No-go zones: mark flood-prone areas and enforce restrictions.
Storage elevation: keep generators and smaller plant off the ground where possible.
What happens: Machines are damaged while being loaded onto low-loaders, during transit, or when straps fail. Road traffic collisions can also occur.
Why it is costly: Transport damage often involves multiple parties (haulier, principal contractor, plant owner), which complicates claims.
How to prevent it:
Competent loading: trained personnel and correct ramps/angles.
Proper securing: rated chains/straps, edge protection, and documented checks.
Route planning: consider height/weight restrictions and site access.
Handover documentation: condition photos before and after transport.
What happens: Sites are targeted for vandalism—broken windows, damaged wiring, contaminated fuel tanks, or deliberate fire-setting.
Why it is costly: Even “minor” vandalism can immobilise plant and cause knock-on delays.
How to prevent it:
Security presence: visible deterrents (lighting, cameras, signage).
Fuel security: lockable caps and protected fuel storage.
Rapid repairs: fix breaches quickly to avoid repeat incidents.
Community engagement: where appropriate, reduce local hostility with clear site communications.
What happens: Misfuelling (petrol into diesel), overloading, incorrect attachments, or unsafe lifting causes damage.
Why it is costly: Misuse can void warranties and may lead to policy disputes if negligence is extreme.
How to prevent it:
Standard operating procedures: simple, site-ready SOPs for common tasks.
Fuel management: colour-coded fuel containers and locked fuel points.
Supervision and spot checks: especially for new starters and agency operators.
Refresher training: short toolbox talks on recurring issues.
Create a plant register with values, serial numbers, photos, and tracker details.
Implement key control and a written end-of-day shutdown routine.
Review site security and upgrade the weakest link (often gates and lighting).
Start daily inspection logs and enforce defect reporting.
Audit maintenance compliance against manufacturer schedules.
Refresh traffic management and banksman coverage.
Standardise hire-in inspections with photo evidence.
Run a monthly toolbox talk focused on one claim type at a time.
Plant insurance can cover:
Theft and attempted theft damage
Accidental damage
Fire, flood, and storm damage
Transit risks (depending on policy)
Hired-in plant (if included)
Common friction points include:
Security conditions not followed (e.g., keys left in plant, no immobiliser where required)
Wear and tear versus sudden damage
Poor maintenance records
Unclear hire contracts and liability assumptions
A good broker will help you align your risk controls with policy conditions, so you are not surprised at claim time.
Plant claims are not just an insurance issue—they are a programme, cost, and reputation issue. By tightening security, improving operator competence, documenting condition, and maintaining equipment properly, you can reduce the most common losses and put yourself in a stronger position when arranging construction engineering insurance.
If you want a quick review of your plant exposures—owned plant, hired-in plant, attachments, and transit—get in touch for a tailored construction engineering insurance quote and risk checklist.
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