Awarded

PCO/217 - Provision of Medium Voltage Sub Station Maintenance at Maynooth University North Campus.

Descriptions

The annual service will be carried out to OEM & ESB requirements, and will include but is not restricted to the following. •Provision of ‘Method Statement/Risk Assessment’ before works commence. •Injection testing of protection relays, both over-current & earth fault and verification of design consequence. •Supply, install and commission 2no. OC / EF relay - Main Supply.•Operation testing of local protection on transformers, i.e. alarm and trip circuits on over-temperature and pressure relays. •Checking MV cable terminations for evidence of heating or discharge. •Checking of ‘DC APSU’ for ‘stand by’ and operation of local alarms and trips. Checking of main LT connections at transformer end of cable run. •Exercising, lubrication and proving of mechanical operation of MV Circuit Breakers. •Exercising, lubrication and proving of mechanical operation of MV ‘isolator and/or racking mechanisms. •Exercising, lubrication and proving of mechanical operation of MV ‘earth switches. •Visual inspection of ‘circuit breakers’ for gas leaks and/or mechanical damage. •Replacement of saturated desiccant. •Cleaning down of switchgear insulating surfaces, voids, and bushings. •Cleaning down of transformer insulating surfaces, voids, and bushings. •Visual inspection of ‘ONAN’ transformers for oil leaks and/or mechanical damage. •Inspection of MV accommodation/plant-rooms for availability of accessories, safety equipment and safe access. •Make recommendations to bring installation up to industries current ‘best practice’. •Advise on condition of 20 No. replacement PSU Batteries. Replace where necessary •The oil transformers can be subjected to ‘Dissolved Gas Analysis’ (DGA). Take samples and have them analysed for DGA and Oil quality. •Organise and schedule an (upstream) ESB isolation to facilitate the works. The cost of this attendance to be included in the quotation. •A full report on the overall condition of all associated equipment, control s