Case Study

University Hospital Waterford (UHW):
Upgrade of Ventilation, AHU & Ductwork

Between 2010 and 2014, Sirus upgraded the old ventilation system supplying air to University Hospital Waterford replacing 5 AHUs in separate projects:

  • Operating Theatre 8 in 2010
  • Sterile Store in 2011
  • Operating Theatre 7 in 2013
  • Operating Theatre 3 and 05 in 2014

The ventilation system supplying air to Operating Theatre 8 was over 15 years old when Sirus was first awarded the HVAC maintenance contract for all of the operating theatres on the site. Theatre 8, in particular, needed considerable upgrade work to bring it up to the standards required by the HSE, according to the HTM-03-01 document.

Theatres 3 and 7 were served by the same AHU and needed to be separated and upgraded to bring one of the two theatres up to HTM-03-01 standards.

The Solution

Sirus provided a ‘turnkey solution’ for University Hospital Waterford. Our HVAC specialists proposed a new configuration of the supply and return ducting, new Air Handling Units (AHU) with the facility for heat recovery and humidification, and optimised controls for variable air supply and energy management.

This project involved:

  • Supply and installation of new AHU (HTM 03-01)
  • Ductwork modifications
  • BMS design and supply
  • Theatre balancing and validation
  • HEPA filters testing
  • Water commissioning & balancing.

The Result

The system installed fully meets with the HTM 03-01 requirements allowing for energy recovery and for easier inspection & maintenance. The Duty/Standby arrangement on the supply and return fans, including duplicate VSD’s means that the theatres have full redundancy and can be relied upon to be available at all times, except during planned routine maintenance.

The combined skills within Sirus – HVAC, Energy, BMS, Commissioning and Project Management – made this an ideal project for our company. The need for multiple sub-contractors was also negated for the HSE leaving them to deal with just one vendor with full project delivery responsibility.

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