Title Page
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Site conducted
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Conducted on
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Prepared by
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Location
- CIRCUIT BREAKERS, ISOLATORS, EARTH SWITCHES, CTs, VTs, etc
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Perform TEV Testing
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Circuit Breaker/Switch Make, Type and Serial Number
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Check operating handles are present and in good condition
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Check HV neon indicators and test probes for proving dead
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Carry out HV End Box Inspection if Isolated
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Check for oil, gas or compound leaks`
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Check springs charged where appropriate
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Check bushing oil levels
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Check correct engagement of isolators
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Check for damage and signs of arcing or local heating to insulators, connections and contacts
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Check pressure gauges and SF6 indicators
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Check SF6 pressure pump running time and number of operations
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Check surge arrester connections and diaphragm
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Check circuit labels, phase plates and locks
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Check main and earthing connections
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Report on excessive rust / need for repainting
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Check mechanism boxes, marshalling kiosks, etc. Check fit of doors and covers, operation of heaters. Check heaters
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Record no of ops & shots in hand (if applicable)
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Ensure warning notice fitted in switchrooms with vacuum switchgear
CONTROL AND RELAY PANELS
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Check for flag operation; log and reset
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Check voltmeters. ammeters all working
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Check / replace indication lamps
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Check healthy trip circuits
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Check inside for verdigris or dampness
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Check heaters
BATTERIES
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Inspect and check operation of battery charger
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Test Batteries
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Number of Failed Cells and cell type
LV AC BOARDS
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Check for local heating / discharge
NERs and NEUTRAL SWITCHGEAR
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Check for internal debris/dirt
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Check heater operation (if present)
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Report missing weather shield (if present)
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lubricate linkages/hinges
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Check general condition, correct locks fitted, indicator glasses not cracked, crazed or discoloured, labels fitted and legible etc
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Report on excessive rust / need for repainting
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Check earthing
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Check for oil and compound leaks
TRANSFORMERS, AUXILIARY TRANSFORMERS, REGULATORS, REACTORS
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Record tapchanger counter readings, write in logbook
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Recorded in Log book
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Check tap position indicator indicating correctly, Check off load t/c are locked off
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Check winding temperature indicators record maximum readings
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Check oil temperature indicators, record maximum readings
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Recorded in Log book?
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Check silica Gel
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Silica Gel Replaced?
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Check operation of pumps and fans
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Check for oil and compound leaks
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Check transformer, tapchanger and bushing oil levels, transparency of site glasses
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Check Buchholz for gas accumulation
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Check insulators or arcing horns for damage, signs of arcing or local heating
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Check explosion diaphragm, Qualitrols & PRV's for signs of operation
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If necessary, lift out sump pump assembly, clean probes. Clean debris from pump inlet. Dispose of accumulated oil; investigate source. Check pump working. Check alarms
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Check bund walls intact and generally free from water
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Record transformer and feeder MDI & reset
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Report on excessive rust / need for repainting
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Check for abnormal levels of noise
CABLE SEALING ENDS
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Check insulators, oil levels, oil leaks
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Check general condition including cleating
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Check earthing
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Check labelling / phase plates
Thermography
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Use TIC to check for hotspots on transformer cable connections
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Use TIC to check for hotspots on Busbar connections
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Use TIC to check for hotspots on switchgear
SITE
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Check stored materials do not restrict access or compromise security or safety clearances
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Complete security inspection. Check walls, fences, windows etc
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Check for rubbish, weeds, etc.; remove or report
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Report need for grass cutting
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Check floodlights
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Check ditches
BUILDINGS
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Check operation of all doors (main and emergency). Check secure
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Check for signs of cracking to brickwork, loose masonry etc
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Visually check condition of pitched roofs (from ground level), missing tiles, etc
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Check gutters, downpipes and gulleys
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Check for water leaks internal to buildings
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Check any windows for breakages water ingress or security
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Check lighting (main and emergency)
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Replace any defective bulbs or tubes
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Check all heaters are working and the substation environment is adequate
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Check telephone operates correctly ( if present)
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Check trench covers and access covers are in place, complete and level. Check for water or vermin infestation
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Check basements for ingress of water and correct operation of water pump
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Check plumbing, toilet, wash basins, toilet paper, brush, cleaner, soap, paper towels and water heater. Replace sundries
STEPS AND LADDERS
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Check tags. Inspect and date if out of date by next inspection
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Check locked secure
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Report if missing
GENERAL
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Danger Label Emergency contact
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SF6 Label Posted on Entrances
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Substation Name Fitted on Entrances
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Electricity at Work Act Sign
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Resuscitation Poster
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HV Line Diagram
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Inspection recorded in site log book?
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Sign
LV SWITCHGEAR DETAILS
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Check ACB'S are in good condition
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Check ACB relays for flag operation
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Check fuse ways are in good condition with no signs of blown fuses
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Check for signs of overheating
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Check LV labelling is correct
