UV Equipment Servicing

⁠⁠⁠ Purpose

1. The purpose of the Specification is to detail the minimum requirements for UV Equipment maintenance for Central Highlands Regional Council.

2. This Specification must be read in conjunction with the Council Goods and Services Contract and the Water Utilities – General Specification which outlines all general requirements for works being conducted for the Utilities Department on utilities infrastructure.

3. The Contractor must adhere to these requirements unless agreed otherwise in writing by Council during acceptance of the offer.

Scope

1. The services described in this Specification are referred to as the Works in this Specification.

2. This Specification provides the requirements for:

a. Application for Permit to Work (2) weeks in advance of undertaking works

b. UV Equipment servicing requirements

c. Provide service report, defects report and site photo’s

Relevant Contract

1. The Works will be performed under Council’s Goods and Services Contract.

2. All work shall be completed in accordance with the Goods and Services Contract as well as the requirements outlined in the Water Utilities – General Specification and this Water Utilities – UV Equipment Servicing Specification.

 Mandatory Requirements

The Contractor and their staff must be qualified and experienced in the maintenance of UV systems for drinking water supply. Although not mandatory, a unit of competency such as NWPTRT053 – Operate and Control UV Processes or equivalent is preferred.

 Scope of Work for Contractor

1. The Works comprise the supply of suitably qualified contractor to perform annual servicing on all Central Highlands Regional Council UV equipment.

2. Council has UV disinfection installed at the Sapphire Water Treatment Plant.

3. The Contractor must:

a. Be qualified and understand the relevant content of Australian Standard AS/NZS 3497 and ANSI/NSF 55 relating to treatment and disinfection systems for potable water supply.

b. Staff attending site must be inducted to site and registered in Council’s Linksafe system and load relevant trade and safety qualifications into Linksafe.

c. Review all information made available by Council relating to the UV disinfections systems.

d. Perform the following maintenance as a minimum:

e. UV System – Evoqua SX-225-8

• Inspect and replace UV lamps (4 off) (approx. every 9,000 hours of operation as per manufacturerschedule).

• Full service of UV chamber as per OEM

• Replace Quartz thimbles (6 off), 2 yearly

• Clean quartz or Teflon sleeves to remove deposits.

• Ensure pre-filters are clean and functioning.

• Assess requirement to conduct acid clean in place and conduct if required.

• Replace wiper rings or clean quartz sleeves if wiper system not installed.

• Check and calibrate UV intensity sensors.

• Inspect and clean temperature and UV sensors

• Check chamber seals and gaskets for wear

• Replace ballasts, gaskets, and sensors if performance drops.

• Update firmware/software on control panel.

UVT Analyser – Realtech M3000

• Replace UV lamp and ribbon cable

• Conduct visual inspection

• Change Dehumidifier as required

Critical Spare Parts Supply for Maintenance and Breakdowns – Sapphire Water Treatment Plant

• UV Lamp 2.5kW MP Ballast- W3477147

• W2T874179 Quartz Thimble (Lamp) – QTH-49X455

• W2T874166 Quartz Thimble (Lamp) – QTH-36X455

• UVSX-225-8 Service Kit

• UVT-060020 UV Lamp (UVT Analyser)

• UVT – 126030 Ribbon Cable (UVT Analyser)

• Other parts for the UV System and UVT Analyser as required

f. Site cleanup and disposal of debris or replaced parts on completion of works.