In January 2020, Deepwater Corrosion Services was contracted by Kelly Slater Wave Company (KSWC), one of the nation's newest and most advanced wave park operators, to conduct a corrosion survey of the the Surf Ranch facility in Lemoore, California. Taking 2 days to complete, all metallic supports and assets were inspected to throughly gauge structural integrity. As a result of the corrosion survey, Deepwater engineers recommended a variety of CP systems to maintain the corrosion protection in the facility.
Background and Scope:
The Surf Ranch is an artificial wave pool created in 2015 in Lemoore, California, to provide the perfect wave for surfing activities. As observed in Figure 1, the pool is about 2,000ft long and 250ft wide, chemical treatment is performed to maintain the water cleanliness and at a neutral pH; however, the treatment, using sulfuric acid 93% (10ppm dosage), polymer with aluminum chloro hydrate 40-50%,and sodium hypochlorite or hypochlorite acid(0.5-1.2ppm of Cl-), creates an acidic environment resulting in corrosion of metallic structures immersed in the water. The resulting corrosion products have a direct impact on the water quality, and the corrosion extent may affect the mechanical integrity of the metallic supports.
The scope of work of this site visit comprised performing a corrosion survey on the following structures: net piles, vehicle supports, and walkway gratings. The goal was to inspect and assess all submerged metallic supports as indicated below:
Piles, I-beams, Gratings, Platform Piles, and Foil tanks
The above assets include the anchor bolts, nuts, and all the tension wires supporting the net posts.