Copper-Nickel Heat Exchangers Removal for Water and Wastewater Facilities

Copper-Nickel Heat Exchangers removal context in Water and Wastewater

Copper-nickel alloys, particularly CuNi 90/10 (UNS C70600), are extensively used for heat exchangers in shipbuilding, offshore, and desalination applications due to their excellent resistance to uniform corrosion, localized corrosion in chlorinated seawater, and biofouling. Installed removal from a water or wastewater facility also depends on the actual process, residual service, isolation status, surrounding systems, and facility access described in the water and wastewater evidence record.

The removal plan must be based on the submitted unit and site. This page does not imply a local crew, permit authority, preapproved lift, guaranteed pickup, or unconditional service availability.

Isolation and residual-service record

Before commercial or logistics commitments, document how both exchanger sides were isolated, drained, cleaned, released, and separated from the water and wastewater system. Unknown conditions should be identified as unknown.

• Maintenance logs showing chemical descaling history.
• Records of struvite and vivianite removal.
• Evidence of routine mechanical cleaning.
• Install strainers to prevent introduction of solid matter.
• Avoid stagnant conditions in seawater with suspended particles.
• Flush with clean seawater and keep dry during shutdown.

Dismantling, loading, and freight planning

The physical plan should connect the copper-nickel heat exchangers configuration to verified dimensions, weight, lifting points, access, staging, carrier profile, and responsibility boundaries.

• Install strainers to prevent introduction of solid matter.
• Avoid stagnant conditions in seawater with suspended particles.
• Flush with clean seawater and keep dry during shutdown.
• Maintain minimum flow rate of 1 m/s in seawater with suspended matter.
• Requires proper isolation from biological and chemical processes.
• Residual sludge and scaling must be addressed.
• Specialized lifting equipment needed due to heavy fouling weight.

Written scope before work

Dismantling, rigging, loading, freight, scheduling, and payment are conditional project functions. A written scope must identify responsible parties, safety release, access rules, exclusions, equipment boundaries, carrier requirements, and commercial terms before performance.

Copper-Nickel Heat Exchangers Removal for Water and Wastewater Facilities condition and logistics record

For copper-nickel heat exchangers removal for water and wastewater facilities, record observable condition, installation state, dimensions, weight, current location, site access, loading capability, and timing constraints before requesting commercial review.