Experts in Corrosion, Metallurgy
and Engineering
POWER
CORROSION (CONSULTANTS) LTD
| ▼Home▼ | ▼Services▼ | ▼Boilers▼ | ►Condensers◄ | ▼Turbines▼ | ▼Site Incidents▼ |
POWER CORROSION
(CONSULTANTS) LTD.
Ashby de la Zouch
Leicestershire
United Kingdom
Email: support@powerccl.co.uk
Tel: +44(0)1530 412418
Web: www.powerccl.co.uk
Last Updated: 20-Oct-20
Scaling
Biofouling
These will occur in condenser tubes and on tube plates if the cooling water is not correctly chemically conditioned. We investigated this incident and advised that the circulated water had been at too low pH.
Pitting
Cupro-nickel condenser tubes were pitted by deposits on the cooling water side. We advised on the required maintenance of the condenser waterside to protect against deposition and corrosion.
Sacrificial anode
Galvanic corrosion
Passivation
Cupro-nickel and brass condenser tubes require a period of exposure to a steady flow of clean aerated seawater to form a passive layer to resist corrosion. This condenser was fitted with sacrificial anodes fabricated in the wrong material. The passivation process failed local to the anodes and corrosion initiated
Erosion-corrosion
Particle erosion
It is good practice to epoxy coat the tube plates of condensers. This will protect against general corrosion, galvanic corrosion, erosion-corrosion and particle erosion. It is important that the correct epoxy formulation is used and suitably applied. We can advise on this.