28 PROJECT
limitations posed logistical challenges , particularly for accommodating the required pipe routing . While the initial design accounted for technical requirements like centrally placed steam , hot water , and potable water main piping to streamline piping placement — a critical factor in the maintenance strategy of the ICU environment - on-site realities often presented unforeseen obstacles ."
The project also grappled with energy efficiency challenges , particularly in humidification during winter . " To manage energy consumption effectively , we integrated a steam-to-steam humidifier . This innovative approach leverages existing hospital infrastructure , such as boilers , to minimise additional electrical load ," says Ndlala . PA
Ndlala recounts one such challenge : " A misplaced pipe required careful coordination among contractors to ensure minimal disruption . However , the main issue was a face brick wall that initially hindered airflow from the plant room to the ICU . Fortunately , once removed , internal installations proceeded smoothly ."
The HVAC stuff Healthcare facilities need an accurate and higher air change rate even if they are similar to other structures . Healthcare facilities need air circulation that is preferably free of contaminants . If the air is appropriately positioned and filtered where necessary , it can be regarded as being free of contaminants .
" We opted for hybrid air handling units with a three-stage filtration system ,” says Ndladla regarding the HVAC system . “ This includes primary , secondary , and tertiary ( HEPA ) filters to ensure the air is free from contaminants , especially crucial in an ICU environment . We also installed Variable Refrigerant Flow ( VRF ) units to aid in the conditioning of the air ."
Designation Owner Managing agent Architect QS Main Contractor Wet Services Engineer Plumbing Contractor
Suppliers
Name Chris Hani Baragwanath Academic Hospital University of Witwatersrand GAPP Architects KDM GVK Siyazama
Maninga Engineering
Masangu Plumbing Cobra Geberit Wilo Dab Grundfos Pipeco Heat Transfer Engineering
www . plumbingafrica . co . za @ plumbingonline @ plumbingonline @ PlumbingAfricaOnline October 2024 Volume 30 I Number 8