12
Tasks scheduled
AI-ASSISTED
This schedule was generated from the Output 02 Task Sequence and Output 03 Hazard-Risk-Control Matrix using Built AI's PPE and plant knowledge base. Inspection and calibration dates have been verified by a competent person against current certification records. Plant marked DUE or OVERDUE must be re-certified before mobilisation.
6
Plant items required
12
Equipment items listed
1
Item DUE — action required
PPE matrix — task by PPE type
REQ — required PPE for the task · ADD — additional PPE if conditions trigger it · OPT — not required for this specific task
Task
Hard hat
EN 397 Class E
EN 397 Class E
Safety boots
EN 20345 S3 SRC
EN 20345 S3 SRC
Eye protection
EN 166
EN 166
Hearing
SNR ≥ 25 dB
SNR ≥ 25 dB
Hi-vis
EN 20471 Class 2
EN 20471 Class 2
Arc-rated
EN IEC 61482-2 Cat 2
EN IEC 61482-2 Cat 2
HV gloves
EN 60903 Class 2
EN 60903 Class 2
Insulating overshoes
EN 50321
EN 50321
RPE
FFP3 / cartridge
FFP3 / cartridge
Voltage detector
Calibrated, in-date
Calibrated, in-date
T01 · Site arrival & inductionArrival, induction, PPE issue and check.
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T02 · LV safe isolationLock-off / tag-off of LV supplies, prove dead.
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T03 · HV switching operationsAuthorised switching to isolate transformer 11 kV side.
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T04 · Earth applicationApplication of portable earths to confirm dead status.
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T05 · Transformer inspectionVisual inspection, gauge reading, oil sampling.
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T06 · Buchholz relay testingFunctional check of Buchholz relay, oil temp gauges.
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T07 · Bushings clean & inspectClean HV bushings, inspect for tracking, ceramic damage.
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T08 · Cable termination checkTermination torque check, thermography review.
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T09 · Earth removalRemoval of portable earths in reverse sequence.
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T10 · Re-energisationAuthorised switching to re-energise, post-energisation checks.
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T11 · Oil sample dispatchSealing samples, packaging, courier dispatch to lab.
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T12 · Final reportingReport write-up, fault list, sign-off.
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Plant schedule — major plant with inspection currency
HV PlantMobile elevated work platform (MEWP)Scissor lift · 8m platform height
HV-PT-01Category
Boom-type · IPAF 3a
Working load
230 kg max + tools
Operator
IPAF 3a card holder · in-date
Pre-use inspection
Daily — supervisor signed
LOLER thorough exam
Within 6 months · current
Inspection status
CURRENT
HV PlantEarth application / removal trolleyPortable earth application rated 25 kA / 1 s · 11 kV system
HV-PT-02Category
HV portable earth — 11 kV class
Capacity
25 kA short-time withstand · 1 second
Operator
Senior Authorised Person (HV) only
Pre-use inspection
Visual and continuity test before each use
Periodic test
Annual electrical test · current
Inspection status
CURRENT
HV PlantHot-stick / live-line tools1.2 m insulated rod for switch and earth operation
HV-PT-03Category
HV insulated tool · 11 kV class
Storage
Dry tube · climate-controlled van
Operator
SAP-HV only
Pre-use inspection
Wipe-down, visual, dry test before each use
Periodic test
6-monthly dielectric test · within window
Inspection status
DUE WITHIN 30 DAYS
HV PlantInsulating mat / mattingSwitch room access matting — 11 kV class
HV-PT-04Category
Insulating mat · IEC 61111 Class 2
Coverage
Full footprint of switching position
Operator
Set up by SAP before any HV ops
Pre-use inspection
Visual for tears, contamination
Periodic test
Annual dielectric test · current
Inspection status
CURRENT
HV PlantOil sampling kitSealed glass vials, sampling syringes, dispatch packaging
HV-PT-05Category
Sampling consumable + tooling
Capacity
6 × 250 ml samples per visit
Operator
HV technician — competent
Storage
Sealed kit in vehicle · ambient OK
Periodic test
Lab calibration of sampling rig — annual
Inspection status
CURRENT
HV PlantThermal imaging cameraFLIR T540 — for termination scan and post-energisation check
HV-PT-06Category
Calibrated infrared camera
Range
-20°C to +1500°C
Operator
Level 1 thermography minimum
Pre-use inspection
Battery, lens, cal-cert verified before use
Periodic test
Manufacturer calibration · 12-monthly
Inspection status
CURRENT
Equipment list — smaller items, instruments and consumables
Item
Specification
Inspection / calibration
Status
Voltage detector — HVCapacitive proving unit — 11 kV class
SAP-HV
Calibrated annually
Cal-cert · in-date · 14·11·2026
Voltage detector — LVTwo-pole tester for LV proving
Authorised Person (LV)
Calibrated annually
Cal-cert · in-date · 22·08·2026
Lock-off & tag kitMulti-padlock hasp + numbered tags
All authorised persons
Visual inspection per use
Visual — current
Torque wrenchCable termination torque verification
Senior technician
Annual calibration
Cal-cert · 03·02·2027
Multi-meterHV-rated digital multimeter — Cat IV 1000 V
Authorised technician
Calibrated annually
Cal-cert · 09·06·2026
Insulation tester5 kV digital insulation resistance tester
HV technician
Calibrated annually
Cal-cert · 18·09·2026
First aid kitSubstation-spec kit including burns dressing
Site supervisor
Inventoried monthly
Last check · 14·04·2026
Fire extinguishersCO2 (electrical fire) and dry powder
Site supervisor
Annual service
Last service · 03·01·2026
Emergency eye-wash500 ml saline solution
Site supervisor
Inventoried monthly · expiry checked
Expiry · 11·2026
Vehicle defibrillatorAED kept in supervisor vehicle
Site supervisor
Battery + pads checked monthly
Last check · 14·04·2026
Portable lighting100 W LED floodlight on tripod
Any operative
Pre-use functional check
Working order
Spill kitOil-spec absorbent pads, drain bungs, bunding
Site supervisor
Inventory after each use
Restocked · 02·05·2026
Operator competency — who is qualified to do what
For HV substation works the competency stack is non-negotiable. No operative steps onto the work area without their authorisation in date and logged against this schedule.
Role
Required competency / training
Scope of authority
Min. on site
Senior Authorised Person (HV)Critical
BPN HV authorisation in date · ENA TS 41-1 trained · annual refresh
All HV switching, earth application, isolation
2 minimum
Authorised Person (LV)Critical
BPN LV authorisation · BS 7671 18th Edition
LV isolations, supplies, controls
1 minimum
HV TechnicianRequired
C&G 2391-52 / 18th Edition · 5+ years HV experience
Inspection, sampling, termination check
2 minimum
Site SupervisorRequired
SMSTS · Competent Person register · BPN-approved
Daily control of works, permits, briefings
1 minimum
IPAF 3a OperatorRequired
IPAF 3a in date
MEWP operation
1 minimum (could be HV technician)
First AiderRequired
FAW 3-day · in date
First aid response
1 minimum
ThermographerRequired
Level 1 thermography minimum
Termination thermal scan
1 minimum
Pre-mobilisation action
HV-PT-03 (Hot-stick / live-line tools) is due for its 6-monthly dielectric test within the next 30 days. The test must be completed and certificate filed before the planned outage on Sun 17 May, or a substitute set must be sourced. This is a hard mobilisation gate — no mobilisation without test certificate.
Schedule prepared by — Built AI
Author confirmation
I confirm this schedule has been prepared from the approved task sequence, hazard-control matrix and current plant / equipment certification records. Inspection and calibration dates verified at preparation. The schedule supports the wider RAMS pack for issue.
Author + role Signature + dateApprover — Senior Authorised Person (HV)
Approval for issue
As Senior Authorised Person for HV operations on this site, I confirm the PPE matrix, plant schedule, equipment list and competency matrix are appropriate for the planned scope of works. Approved for issue subject to closure of the pre-mobilisation action above.
SAP-HV name + authorisation no. Signature + date of approval