Marine Environments

Killybegs Immersed Pier Legs

The application of ZINGA on the pier legs at Killybegs Harbour was done in the summer of 2000.

The customer, the Irish Department of Marine and Natural Resources, and the contractor, SAR Marine & General, waited a full year before giving any official comment on the performance of the ZINGA coating.

Based on regular controls, they confirmed that the ZINGA is performing very well.

The fishing pier, which supports the factory buildings, is held up by 309 mild-steel hexagonal shaped legs, all approx. 600 mm in diameter.

These pier legs have been in the sea for 25 years and due to the salt and the sulphate reducing bacteria present in the sea water, they were losing up to 2 mm per year of their thickness. The waters around Killybegs are unique because they have the highest rate of corrosion in Europe.

The height from the concrete deck to the water level at low tide is approx. 3 to 4 meter.

At high tide, 1,5 to 2 meter of each pile is totally submersed in seawater.

The piles were prepared by UHP water-jetting and blasting to SA 2.5 with Rz 40 to 60 µm.

The application happened under severe surveillance of SGS Axa-Med, because it was a very difficult and delicate application as they had to take into account the tidal movement of the water and the constant contact with sea water. SGS Axa-Med had prescribed a dry film thickness of ZINGA of 25 + 40 + 40 + 40 µm = 145 µm, but in the end an average of 300 µm was measured.

Inspections in 2003, 2006 and 2009 confirmed that ZINGA is protecting the steel members very well in these harsh conditions.

In March 2014, the pier legs were hydro-blasted during an inspection. The shellfish/barnacles on the surface of the ZINGA layer have grown more than 100 mm in thickness in places, but the ZINGA underneath is still in perfect condition.


PSA Lighting Masts

PSA (Port of Singapore Authority), is the 4th largest port in the world and the second busiest after Rotterdam. ZINGA was selected to be coated on 30 lighting masts.
Each lighting mast measures 45 meters in height within minimum DFT of 120 microns.
At this moment 90% of the light masts in this harbor are protected with ZINGA . The first light masts were treated in 2002.
Being at the container area, most of the lighting masts (previously protected by hot-dip) were installed near to the sea coast and were found to be quite rusty.

Lamu Port Rebars

The Kenya Lamu Port is the gate way for Southern Sudan -Ethiopia Transport Corridor (LAPSSET). This is also known as the Lamu Corridor. It is a transport and infrastructure project in Kenya that , when completed, will be the country’s second Transport Corridor. Kenya’s other transport corridor is the Kenya Mombasa Port which connects Uganda, Rwanda, Burundi, Sudan and other landlocked countries through Nairobi to the coast of Kenya.

ZINGA is applied at 40 µm DFT on the rebars in all reinforced concrete structures.

Pacific Grain Elevator

In 1998 the company ‘Pacific Elevators LTD’ decided to refurbish their grain elevator in Vancouver.
After consulting with the consulting engineers from ‘Villholth Jensen and associates’ it was decided that ZINGA would be used on the 200 ton structure.

ZINGA was used on all the larger -non-mobile-parts of the structure.

Shell Tanks

Since 2006, 4 huge storage tanks for hydrocarbon products that are property of Shell have been repaired using a system based on ZINGA.

The biggest of these storage tanks measured 16 meters in height and 20 meters in diameter and has been repaired in November 2007. This storage tank (together with another one that was treated in August 2006) is located in Mohammedia.

In October 2009 a storage tank was Zinganised in Agadir and in March 2010 a storage tank was treated in Tan-Tan.

This repeated use of the system based on ZINGA proves the quality delivered (even in marine environments).

ZINGA has been overcoated with Zingalufer (sealer) and a local PU topcoat.