MEP Means Coordination Jason Richards Peter Martin MEP Means - PowerPoint PPT Presentation

MEP Means Coordination Jason Richards Peter Martin

MEP Means Coordination

Western Link, Hunterston & Flintshire Bridge  £1 billion project bringing renewable energy from Scotland to England and Wales.  Project will play a key role in helping the UK meet its renewable energy targets.  Project includes DC subsea and underground cables, incorporating a converter station at each end.

Marine Cable  Marine cable is 385km long.  Longest 2,200MW capacity high voltage direct current cable in the world.  First subsea link to use a DC voltage level of 600,000 volts.  Sufficient electricity to meet the needs of around 2,000,000 people.

Converter Stations  Stations convert DC electricity to AC to allow use in existing National grid system.  Equipment had to be located internally to protect from the coastal salt damaging environment.  Design for the converter stations was undertaken using Revit.

Federated Model  Multi-discipline design involving Architects, Structural, MEP and client appointed specialist engineers.  Multiple buildings were spread across two sites so shared coordinates had to be agreed and published to maintain alignment.

Thermal Modelling – Internal Environment  Electrical equipment has very high heat gains.  Natural ventilation was preferred but unachievable due to extreme external design conditions.

Thermal Modelling – Occupant Comfort Project Engineering Challenges Lessons Learnt/Benefits    Large Residential regeneration Site wide electrical demand could not CIBSE TM52 criteria used to assess project – First development site; 6 exceed existing. overheating risk. blocks consisting high-rise,   Emphasis placed on passive design External solar shading devices maisonettes and extra care facility. features to reduce the need for modelled in IES to mitigate use of cooling; hence lower electrical cooling. demand.

Plantrooms  Subsequent to thermal modelling natural ventilation was ruled out.  All air mechanical ventilation system  Large ducts to coordinate in small plant space.  Revit enables detailed solution that would be impossible in 2D.

Air Handling Units  Very large Air handling units had to be accommodated.  4no. units 9.3m (L) x 6.5m (W) x 3m (H), 33 tonnes each supplying 42m 3 /s.  Early collaboration with Structures in order to accommodate air handling units in model.

2D Problem  Coordination of services with sensitive electrical equipment clearance zones.  Any outages are business critical and would have serious implications.  Clearance requirements based on record 2D sectional drawings.

3D Solution  Created 3D Spheres in order to provide a visual aid and a means of clash detection.  Real time model fly through presented to other disciplines to demonstrate coordination.

MEP Model Demo  Valve Hall – Ductwork drops coordinated around clearance zones, ductwork sizes,  AHU plantroom duct external – had to get all fresh air intakes to one side and exhaust on other side to prevent cross contamination of air.  AHU plant room internal – provide internal 3D view of plantroom, any visible space left is retained for maintenance and access requirements of the air handling units.