19Maintenance#
19.1General#
The equipment and enclosures shall be designed to simplify installation and maintenance. All components shall be modular and able to be replaced or repaired within 15 minutes of maintenance staff arriving on-site.
19.2Maintenance plan#
The Contractor shall prepare an ITS maintenance plan that describes as a minimum:
- a) how to respond to device and/or system failures
- b) what resources shall be maintained
- c) programmed maintenance including calibration or recalibration of sensors and instruments
- d) call-out response times
- e) maintenance personnel contacts, and
- f) spares.
Where the Contractor performs maintenance during the defects liability and/or maintenance phase(s):
- a) all work shall be performed in accordance with the maintenance manual and/or maintenance plan
- b) Points of Failure, causes of failure and a complete replaced components list shall be recorded, and
- c) the maintenance records shall be filed in the maintenance manual including Points of Failure, Causes of Failure.
Programmed maintenance shall reflect the manufacturer's recommendations; specific requirements described in the Technical Specification, and additionally, draw upon the Contractor's experience.
The programmed maintenance shall detail (as a minimum):
- a) maintenance schedules
- b) maintenance procedures, and
- c) specific maintenance record sheets including Points of Failure and Causes of Failure.
The ITS maintenance plan shall comply with all requirements of the Contract for maintenance plans.
19.3Spare components#
The Contractor shall prepare a schedule of spare components for retention for service and/or fault maintenance purposes. Where the Contract includes a maintenance phase, the Contractor shall maintain a stock of such items during that phase. The Contractor shall guarantee that such spare components will be available for a minimum of 7 years after Practical Completion.
If any component is determined to be safety-critical through risk analysis or other assessments, the Contractor shall ensure that sufficient spares are provided to avoid unnecessary lead times that could compromise safety or operational continuity. The Contractor must liaise with the Administrator to confirm the classification of safety-critical components and the required stock levels.
19.4Failure response maintenance#
The Contractor shall classify equipment and/or system failures as either: critical, urgent or minor.
The failure and remedial action shall be documented with reference to the manufacturer's instructions and/or recommendations and included in the maintenance plan.
Symptoms of the fault, Points of failure, causes of failure and a complete list of replaced components shall be recorded.
Where a failure does not clearly align with the definitions below, and/or the device / system is different from those initially provided under the Contract, then the classification shall be negotiated between the Contractor and the Principal.
All hardware which has failed and been replaced within the contracted warranty period shall be made available to the Principal for examination prior to its return to the Supplier. The Contractor shall provide within one month a report on the reasons and conditions for the failure. The report shall also include any risks and/or maintenance issues that may impact on the overall Contract where similar components are used.
19.4.1Critical failure#
A critical failure is a failure that causes:
- a) complete failure of a defined device and/or system, and/or
- b) incorrect operation of a defined, safety critical device and/or system.
For example, failure of power supply, traffic sensor or Field Processor at a defined Site.
19.4.2Urgent failure#
An urgent failure is a failure that causes incorrect operation of the defined device and/or system.
For example, sensor drift outside acceptable performance limits.
19.4.3Minor failure#
A minor failure is a failure that causes occasional disruption to the correct operation of the defined device and/or system. For example, intermittent problems with telecommunications channels.
19.5Maintenance records#
19.5.1Log books#
The Contractor shall maintain log books that record:
- a) engineering information related to any Site maintenance Works undertaken, and
- b) performance documentation of the devices and systems.
The log books shall record technical interpretations of performance observations of the system and details of any performed programmed or non-programmed maintenance.
The log books shall be made available for viewing by the Administrator upon request.
19.5.2Maintenance record sheets#
The Contractor shall develop and utilise maintenance record sheets as part of the maintenance system for all equipment.
The sheets shall be completed by the same members of the Contractor's maintenance staff who actually performed the maintenance, so as to accurately record the specific Works completed.
Each maintenance record sheet shall be signed, dated and filed into the respective section of the Contractor's maintenance manuals on completion.
Symptoms of the fault, points of failure, causes of failure and a complete list of replaced components shall be recorded.
Those record sheets shall be passed to the Principal upon completion of the maintenance Contract.