Repairing of Building Services Engineering Systems Rak Repair Methods of Structures, exercise (4 cr) Esko Sistonen

Some basics...  Demolition work from the top downwards; HVAC repair vice versa  Ventilation: from negative pressure to overpressure  Cleanliness of bag filter and heat exchanger: supply, exhaust, outside, and waste air duct  Technical systems: ground loop heat pump systems,..

Some basics...  Planning before repair action Header Sound absorber Cold (blue) and warm (red) water supply Sewer pipe Pipes (white) from boiler and ground loop heat pump Floor heating pipes Technical room

Water leak of wall sump Re-insulated water pipes Dirty exhaust outlet Water leak of storm water drainage from flat roof

Water shut off valves -> asbestos, mould District heating system

Water leak of cast iron drain pipe Heat distribution room Insulation groove in suspended ceiling Inspection panel of waste sump

Minor water leak of old drain pipe Water leak of hot water heating system

HVAC Repair Works duct work machinery installations insulation work terminal installation control and monitoring work non-sewers floor drains the heat distribution room pipe installation heating coil installation water and sewer fitments

Installation of lining hose into air shaft of natural ventilation From natural ventilation to exhaust ventilation

-Bathrooms made of metal plates -Repair of plastic drain pipes

Alternative water and sewer pipe repair methods *renewal of the whole piping system -requires the demolition work of structures (structures of channels) -takes-6mths – interference for users (water breaks, toilets, showers, common areas or containers) -dust, noise -the end product is known: the pipes are new *pipe coating -tube in tube coating with epoxy -fast – a bit interference (takes up only 2 days) -no noise -durability of app. 20 years of experience in Western Europe, for a longer time period -Insurance companies does not necessarily give an age reduction -the coating is also possible for a warm and cold water pipes

Several internet links and some key words nZEB_Kurnitski-1.pdf *Condition survey manuals (at least in Finnish) *HVAC (Heating, Ventilation, and Air Conditioning) *Building Services Technology (in Finland)

Several standards…  SFS-EN ISO (October 2010). Classification and information on design of plastics piping systems used for renovation (ISO 11295:2010).  SFS-EN ISO (2011). Plastics piping systems for renovation of underground nonpressure drainage and sewerage networks - Parts  SFS-EN ISO (2011). Plastics piping systems for renovation of underground water supply networks - Parts 1-3.  SFS-EN (Mars 2013). Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 4: Specific functional requirements for renovation.  SFS-EN (December 2001). General requirements for components used for renovation and repair of drain and sewer systems outside buildings.

Several standards…  SFS-EN (2003). Plastics piping systems for renovation of underground non-pressure drainage and sewerage Networks - Parts 1-7.  SFS-EN (January 2011). Classification and characteristics of techniques for renovation and repair of drains and sewers.