QCH HV Remediation Audit

• Document No.

• Audit Title

• Client / Site

• Conducted on

  Date

• Prepared by

• Location
  Address

• Personnel

• HV REMEDIAL MAINTENANCE REPORT

INSPECTION DETAILS

• DATE OF INSPECTION

  Date

• NAME OF PERSON CONDUCTING MAINTENANCE

• NAME OF FACILITY

• LOCATION OF MAINTENANCE - ROOM NUMBER

SCOPE SUMMARY

• CHECKED AND ADJUSTED DAMPERS IN Tx PROTECTION CB

• CLEANED AND REMOVED ALL OLD GREASE FROM MOVING PARTS IN THE ISOLATORS, EARTH SWITCHES AND PROTECTION CIRCUIT BREAKER. REGREASED ALL MOVING MECHANICAL PARTS

• CHECKED AND CLEANED ALL LV AND HV TERMINATIONS IN THE RMU AND Tx.

• INSTALLED EARTH COLOUR CODING ON THE DRAINS AND SHIELDS OF THE HV CABLES AT THE RMU END

• VACUUMED AND WIPED CLEAN ALL CUBICLES OF DUST AND REINSTATED COVERS

• NEW TEMPERATURE CONTROLLER AND PT100 THERMISTORS INSTALLED AND COMMISSIONED.

FORWARD SWITCHING

• RECORD LOW VOLTAGE CHANGEOVER TIME

• WERE THERE ANY ABNORMALITIES WITH THE FORWARD HV SWITCHING?

  Yes

  No

  N/A

• PLEASE PROVIDE MORE DETAIL

MAINTENANCE TASKS

RMU ISOLATORS AND EARTH SWITCHES

RMU ISOLATOR

• WHAT IS THE ISOLATOR DESIGNATION?

• REMOVE ANY OLD GREASE

• CONFIRM ALL ACCESSIBLE FASTENERS ARE FIRMLY TIGHTENED

• GREASE MOVING PARTS/AREAS OF FRICTION WITH LITHIUM GREASE

• CHECK ELECTRICAL CONNECTIONS (PLUGS/TERMINATIONS ETC)

• INSPECT ALL CABLES/ELECTRICAL CONNECTORS FOR MECHANICAL DAMAGE.

• IS THERE A SPRING CHARGE MOTOR

  Yes

  No

  N/A
SPRING CHARGE MOTOR

SPRING CHARGE MOTOR

• VERIFY SPRING CHARGE MOTOR IS OPERATIONAL AND MOVES FREELY - MANUALLY CHARGE SPRING, OPERATE AND CHECK FOR RESISTANCE OF MOVEMENT

• MANUALLY OPERATE USING BREAK ARM AND CHECK FOR RESISTANCE TO MOVEMENT.

• CHECK FUNCTION OF LIMIT SWITCHES AND VERIFY CONDITION

• WERE THERE ANY ABNORMALITIES IDENTIFIED WHILST SERVICING THIS ISOLATOR?

  Yes

  No

  N/A

• PROVIDE FURTHER DETAILS

• PROVIDE PHOTOS

  Media
RMU EARTH SWITCH

• WHAT IS THE EARTH SWITCH DESIGNATION?

• REMOVE ANY OLD GREASE

• CONFIRM ALL ACCESSIBLE FASTENERS ARE FIRMLY TIGHTENED

• GREASE MOVING PARTS/AREAS OF FRICTION WITH LITHIUM GREASE

• INSPECT ALL CABLES/ELECTRICAL CONNECTORS FOR MECHANICAL DAMAGE.

• CONFIRM EASE OF MOVEMENT OF ALL MECHANICAL PARTS. MANUALLY CLOSE AND OPEN HV EARTH SWITCHES UNDER AP TO CONFIRM MECHANICAL EASE.

• WERE THERE ANY ABNORMALITIES IDENTIFIED WHILST SERVICING THIS EARTH SWITCH?

  Yes

  No

  N/A

• PROVIDE FURTHER DETAILS

• PROVIDE PHOTOS

  Media

TRANSFORMER PROTECTION CIRCUIT BREAKER

• WHAT IS THE CIRCUIT BREAKER DESIGNATION?

• REMOVE ANY OLD GREASE

• CONFIRM ALL ACCESSIBLE FASTENERS ARE FIRMLY TIGHTENED

• GREASE MOVING PARTS/AREAS OF FRICTION WITH LITHIUM GREASE

• CHECK ELECTRICAL CONNECTIONS (PLUGS/TERMINATIONS ETC)

• INSPECT ALL CABLES/ELECTRICAL CONNECTORS FOR MECHANICAL DAMAGE.

• INSPECT ALL PARTS FOR SIGNS OF UNUSUAL OR EXCESSIVE WEAR

• CHECK DAMPER IS CORRECTLY POSITIONED AND SECURED IN PLACE, CLEANED AND GREASED.

• RECORD CYCLE COUNTER

SPRING CHARGE MOTOR

• VERIFY SPRING CHARGE MOTOR IS OPERATIONAL AND MOVES FREELY - MANUALLY CHARGE SPRING, OPERATE AND CHECK FOR RESISTANCE OF MOVEMENT

• MANUALLY OPERATE USING BREAK ARM AND CHECK FOR RESISTANCE TO MOVEMENT.

• CHECK FUNCTION OF LIMIT SWITCHES AND VERIFY CONDITION

• WERE THERE ANY ABNORMALITIES IDENTIFIED WHILST SERVICING THIS PROTECTION CIRCUIT BREAKER?

  Yes

  No

  N/A

• PROVIDE FURTHER DETAILS

• PROVIDE PHOTOS

  Media

LV COMPARTMENT

• VISUALLY INSPECT ALL TERMINATIONS AND CONFIRM THEY ARE TIGHT

• CONFIRM THAT CONTROL CABINET HAS BEEN CLEANED. VACUUMED AND WIPED.

• TAKE PHOTO OF SF6 GAS GAUGE

  Media

• INSPECT ALL CABLES AND ELECTRICAL CONNECTORS FOR DAMAGE

• WERE THERE ANY ABNORMALITIES IDENTIFIED WHILST SERVICING THIS PROTECTION CIRCUIT BREAKER?

  Yes

  No

  N/A

• PROVIDE FURTHER DETAILS

• PROVIDE PHOTOS

  Media

CABLE ZONES

• THOROUGHLY CLEAN - VACUUM AND WIPE

• CONFIRM THE COLOUR CODING OF THE HV CABLES SCREENS (YELLOW/GREEN)

• CONFIRM CABLE CLAMP TIGHTNESS

• WERE THERE ANY ABNORMALITIES IDENTIFIED WHILST SERVICING THIS PROTECTION CIRCUIT BREAKER?

  Yes

  No

  N/A

• PROVIDE FURTHER DETAILS

• PROVIDE PHOTOS

  Media

COMPLETED FULL TEST OF TEMPERATURE CONTROLLER AND THERMISTOR CHECK, INCLUDING CALIBRATION TO ENSURE THAT FANS, ALARM AND TRIP OCCUR WITHIN TOLERANCES OF AS/NZS 60076-2:2013. REPORT WILL SHOW THAT THE TEMPERATURE CONTROLLER TOLERANCE WAS WITHIN 1%.

• CONFIRM FANS SWITCH ON AT 50 DEG C

• CONFIRM THAT CONTROLLER ALARMS AT 60 DEG C

• CONFIRM TRIP AT 100 DEG C

GENERAL CHECKS

• TIGHTNESS CHECKS ON ALL Tx HV TERMINALS

• TIGHTNESS CHECKS ON ALL Tx LV TERMINALS

• VISUAL INSPECTION IN Tx CAGE ENSURING ALL MATERIALS AND EQUIPMENT REMOVED AND ACCOUNTED FOR

• MEN CHECK - CONFIRM UPGRADE OF LV MEN TO PARALLEL 120 SQMM CABLES

• THERMISTOR CHECK - CONFIRM UPGRADE OF THERMISTORS AND CHECK TIGHTNESS OF TERMINATIONS

• TAKE PHOTO OF UPGRADED MEN

  Media

• TAKE PHOTO SHOWING NEW THERMISTORS

  Media

CLEANED TRANSFORMER ROOM

• HEPA VACUUMED ALL SURFACES WITHIN THE Tx CAGE AND ROOM

• WIPED DOWN ALL SURFACES IN THE Tx CAGE AND OUTSIDE REMOVING ALL DUST

• RELAMPED ALL THE LIGHT FITTINGS WITH IN THE ROOM

• TAKE PHOTO SHOWING CLEANED ROOM

  Media

GENERAL COMMENTS

FURTHER INFORMATION

• FURTHER INFORMATION

• ADD FURTHER PHOTOS IF NEEDED

  Media

REVERSE SWITCHING

• RECORD LOW VOLTAGE CHANGEOVER TIME

• WERE THERE ANY ABNORMALITIES WITH THE REVERSE HV SWITCHING?

  Yes

  No

  N/A

• PLEASE PROVIDE MORE DETAIL

• END OF AUDIT