DESCRIPTION OF WORK TO BE PERFORMED: Per Specifications 1. Demolition and removal of all existing weld fume hoods, fans, filters, supports, controls, power etc. to remove the existing system and prepare the building for new systems. ACM will take the existing system once it is removed and will dispose of it per the college’s guidelines. 2. Furnish and install two (2) new weld fume extractor systems. a. One system will serve twelve (12) existing weld booths utilizing new weld fume extractor arms at each booth connected to a central recirculating weld fume extractor fan with spark arrestor, cartridge style collector with compressed air pulse filtering system, duct silencer and return/recirculation ductwork. The exhaust collector will be installed exterior to the building on an angle iron frame and be protected from damage by steel/concrete parking bollards. b. The other System will be a non-recirculating type extractor system which will consist of new weld fume extractor arms, connected to an exterior mounted utility fan set with a separate duct system. This system will be used to weld stainless steel material and recirculating the exhaust from this system is not permitted. 3. Furnish and install duct systems as shown between the weld fume extractor arms and the fume collectors/fans. Provide all required supports, hangers, connectors, miscellaneous steel and general construction required to mount and support the systems as shown. 4. Furnish and install a new compressed air system complete with a new air compressor, compressed air piping, controls, power, etc. to provide a dedicated compressed air system for the new recirculating collector. 5. Furnish and install all new power and control wiring necessary to power and control the systems as indicated for complete fully functioning systems. 6. Furnish and install all general construction required to properly hang and support the equipment, piping and ductwork, as well as general construction required to protect the exterior mounted equipment and systems.
