Why it matters
Without AI, proximity planning risks inadequate clearance, unplanned outages, permit gaps, and ineffective safety controls, leading to unsafe work, utility interference, and failing contractor audits.
From design to safety
Design
AI informs planning constraints
The system reads topography, line positions, clearance standards, and permits, deciding required work methods, equipment, and buffing margins. It cross-checks with BS 3998 and BS 5837, material take-offs, and client brief to lock project scope and environmental mitigation measures before approval.
- overhead line survey data
- clearance planning workbook
- permitted work window
- risk assessment template
Build
Plan and mobilise with AI checks
The AI validates approach routes, equipment needs, and TMP positioning against line proximity rules and outage schedules. It models temporary works, crane lifts, and vehicle routes, recording boom reach limits and ground protection requirements for signing off by the supervisor.
- temporary works plan
- site access manifest
- conductor spacing chart
- meWP access plan
Operation
Monitor proximity in real time
Field sensors feed AI about line sag, weather, and worker positions to enforce dynamic clearance boundaries. It also tracks tool positions, escape routes, and turbine or distribution center proximity, updating margins as conditions evolve.
- live-line detector
- distance-to-line laser
- vegetation clearance log
- crew coordination app
Maintenance
Inspect and recalibrate proximity rules
AI flags drift in line location data, sensor calibration, and permit validity during routine checks. It logs calibration events, conducts periodic redundancy checks, and aligns with LOLER and BS 3998 maintenance cycles.
- sensor calibration log
- permit validity tracker
- line position records
- field equipment maintenance log
Safety
Ensure safety and regulatory compliance
The system triggers aerial rescue readiness, public protection buffers, and operator outages while recording all sign-offs. It integrates with LOLER inspections, emergency plans, and utility notification protocols.
- aerial rescue kit
- public protection plan
- outage liaison contact
- LOLER inspection record
Part by part
- 1
live-line detector
- Watch for
- unexpected voltage presence detected, sensor fault, or drift in proximity readings.
- AI action
- flag proximity breach and trigger safe exclusion zone, and notify supervisor.
- 2
distance-to-line laser
- Watch for
- exceeding setback threshold due to line motion, sag, or misalignment.
- AI action
- recalculate safe envelope and alert team, and log event.
- 3
temporary works plan
- Watch for
- incomplete TMP or incorrect setup, missing lane closures, or unsuitable barriers.
- AI action
- generate corrective action request, rescope personnel routes, and update TMP plan.
- 4
permit validity tracker
- Watch for
- expired permits, missing paperwork, or permit conditions not met for current task.
- AI action
- pause operations, request re-issue, and record reason in the log.
- 5
line position records
- Watch for
- line displacement, routing changes, or survey error affecting proximity model.
- AI action
- update proximity model, notify planning lead, and archive change.
- 6
outage liaison contact
- Watch for
- outage window changes, conflicts with planned work, or forecasted outages.
- AI action
- pull latest outage status, adjust work window, and log decision.
Worked example
Catching a clearance breach before line contact
Illustrative scenario with sample data.
A tree surgeon team plans a prune near a 11 kV span; AI checks outages, permits, and clearance with the utility liaison.
Signal in
siteID: TH-27; lineGP: 11kV; clearance: 3.5m; permits: PTW-2026-081; outageWindow: 09:00-12:00; weather: light rain; team: 4 climbers, 2 groundsmen; terrain: sloped access; boom reach: 12m; MPD: 75%
System out
alert: proximity breach detected 2m within line; action: pause work, request alternate access, notify utility liaison, issue updated PTW and revised TMP; record: incidentID: INC-00123
Human sign-off: Contracts manager reviews outage feasibility and approves revised work plan with site supervisor sign-off.
How to roll it out
Phase 1
Weeks 1 to 4: Baseline
Install proximity sensors, connect to site manager tablet, and test data feeds against current line maps.
Phase 2
Weeks 5 to 8: Field validation
Run live trials on two sites, validate door-to-line clearance logic, and tune AI thresholds with utility input.
Phase 3
Weeks 9 to 12: Operational rollout
Scale to full project portfolio, integrate with PTW and TMP, and automate outage communications.
Where people stay in charge
- All decisions involving line proximity and expulsion of workers must be signed off by a qualified person from the utility liaison team or a certified supervisor.
- The AI can propose changes but cannot override legally binding permits, outage windows, or mandatory safety procedures.
- Sensitive decisions affecting public protection or aerial rescue readiness require a senior manager's explicit approval before execution.
Questions owners and crews ask
What data does AI read to plan line proximity for a job?
AI reads line location data, clearance standards, outage schedules, permits, weather, and site access information to define safe work envelopes and trigger alerts, with recorded audit trails and sign-offs.
Who approves AI-generated proximity plans?
The signed-off authority is the site supervisor in conjunction with the contracts manager and the utility liaison, validating permits and safety constraints, and recording the approval in the project log.
How are outages incorporated into planning?
AI pulls the latest outage window from the utility liaison and recalculates the safe working envelope, updating TMP and PTW accordingly, with change notifications to the site team.
What happens if a sensor fails on site?
The system flags the anomaly, escalates to the supervisor, and reverts to manual proximity controls and standard operating procedures, logging the incident for audit.