Maintenance and Repair

Hamon has a wide experience in cooling tower maintenance, natural draft or mechanical draft.

Drift Eliminators

• Mechanical cleaning (avoiding use of chemicals)
• Prevention of legionnaire disease
• Avoid gasp or holes
• Efficiency increase
• Selection of most appropriate type (wave or cellular - pitch)

Heat Exchange Media

• Mechanical cleaning (without chemical doubles expected life)
• Partial or full replacement
• Efficiency increase
• Replacement of asbestos cement sheets with PP grids or plastic film fill
• Selection of most appropriate type depending on the water quality

Air Inlet Louvers

• Modification of design of existing tower for subsequent installation of louvers
• Addition of louvers or screens to prevent water loss and legionella

Noise Attenuation

• Baffles in air ibnlet
• Noise attenuators integrated in fan stacks
• Slanted sheets in basin

Fan stacks

• Replacement of concrete or wooden stacks by FRP
• Addition of diffusers to reduce the energy consumption

Motor / Fan Group 

• Replacement of fan blades or adjustment of pitch angle
• Transmission shaft: replacement of steel with composite materials or of a bearing shaft with one in one piece
• Installation of walkways above the drift eliminator to make access to the motor/fan group safe and easier

Distribution 

• Replacement of a distribution network with flumes by a network with tubes if the water treatment has been improved. Replacement of wooden flumes by FRP ones
• Modification of the network to facilitate the cleaning with removable tube ends.
• Partial or complete repair of an existing AC by PVC elements

Structure 

• Partial or complete replacement (whatever the material) 
• Replacement of primary and secondary beams
• Partial or replacement of structural fixations 
• Removal and replacement of upper part of cell 
• Replacement of roof and casing 
• Design of guide plans for civil work

During the lifetime of a chimney or steel stack, a number of routine maintenance issues such as inspection, ultrasonic thickness testing, painting and coating, need to be continually addressed.

Hamon Custodis offers a full spectrum of on-site inspection, maintenance, and repair services. We provide comprehensive services for major maintenance issues including temporary stacks. We perform engineering evaluations on existing chimneys and stacks and engineer necessary repairs for a life extension program.

We have regional offices and crews familiar with your facility and experienced in all facets of our services that can offer quick emergency responses at reduced mobilization costs.