CoatingsPro Magazine

MAR 2018

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

Issue link: https://coatingspromag.epubxp.com/i/947223

Contents of this Issue

Navigation

Page 57 of 84

COATINGSPRO MARCH 2018 57 "Even though we saw flash rust after surface preparation, there was no need to re-do the blasting as we used to do with other products. Instead, after high-pressure water washing, EonCoat can be sprayed directly onto the steel surface where rust is present." e EonCoat works as a two-part surface treatment coating. e A side is the acid side, which brings the iron out in the steel to cause the chemical reaction. e EonCoat needs to physically touch the metal in order to alloy it. Meanwhile, the B side is the outer shell of the coating, which creates the ceramic-like outer layer. Because it is a two-part coating, the system requires using both a plural-component spray machine and a two-part gun, which applicators are shown during the training sessions. e machine from the electronics parts factory included two hoppers and two pumps. Holding the spray gun perpendic- ular to the substrate at a distance of 60 to 75 cm (24‒30 inches), the crew sprayed the exterior with the machine set at a working pressure of between 10.3 MPa (1,500 psi) and 12.4 MPa (1,800 psi). A separate line is hooked directly to the spray gun with a pressure of 0.20 MPa (30 psi) to 0.27 MPa (40 psi). e clear coating was sprayed at an average of 508 microns (20.0 mils) of wet film thickness (WFT), which serves as its standard applica- tion thickness level. "W hen you spray, the wet or dry film thickness [DFT] is near identical because EonCoat is 95 percent solids," A lpert explained. If applicators are in very windy conditions, they could spray at a target 635 microns (25.0 mils), he said — but conditions were largely calm on the week-long application at Ningbo. e crew inspected the EonCoat after spraying to ensure there were no spots, which would indicate a lack of sufficient bonding. Because the system cures quickly and dries to the touch within 15 to 20 minutes, applicators can tell quickly whether there are problems. On this job, there fortunately were no such issues. "If there is a flaw, it would show right away, allowing immediate fix and repair," Zhijun said. e third and final step of the application process involves spraying down a decorative topcoat. e EonCoat system is compatible with a range of topcoats, and on this project, the client wanted red for the cannons and white for ancillary pipeline equipment and storage containers beneath. To accom- plish that, the PSX 700 siloxane coating from PPG was the client's topcoat of choice, sprayed on at ~127 microns (5 mils). e coating, known for its color and gloss retention, was a natural fit for a high-visibility project such as this one. "In this case, the topcoat was for cosmetic appeal," A lpert said. "is was a huge new installation, where everything is top shelf." And with the addition of the topcoat to each section of the site, the three-step process was effectively complete, and the assets were turned back over to the client! ough the 1,394 m² (15,004.9 sq. ft.) job required about a week 's work in total, including the setup of scaffolding equipment and surface preparation works, each section of the terminal site was completed very quickly thanks to the rapid curing time of the EonCoat and its reduced blasting requirements. "It can be handed over to a client one hour after spray- ing, which greatly reduces the difficulty of construction and improves the construction efficiency," Zhijun said. Training Pays Off In this case, the client gave rave reviews to both the contractor and manufacturer for their collaborative work. ough the job was only completed a few months ago, the terminal representa- tive is optimistic based on what he's seen thus far. "I believe its lasting effect will provide lifelong protection to our equipment," Fanglei said. e manufacturer's representative noted improvement from the crew's efficiency within days and sometimes hours at the terminal, while also complimenting their willingness to ask questions and attend all requisite training sessions. "Like anything else, the more these folks do, the better they get," A lpert said. "You just see how the hours someone sprays directly relates to the quality." Most importantly for the client, the tower is fully functional in 2018 and providing benefits both structurally and aesthetically. "ose towers are supposed to be functional and be able to put a fire out, and they are also supposed to indicate a sense of confidence," A lpert said. "It's meant to show people that if something happens here, they're ready to respond. Instead, it was this big rusted metal tower, a huge eyesore due to its proximity to salty, brackish water. But now, it looks great, and it's holding up." "We do a lot of AST [aboveground storage tank] work around the world, but we don't get to do a lot of unique struc- tures," A lpert added. "is is just such a cool, unique structure that people are looking at, and I couldn't be more excited with how the job went." CP Chinese Oil Terminal VENDOR TEAM Anhui Jingde County Electronics Parts Factory Equipment manufacturer 22 Hedong Middle Rd. Jingyang, Xuancheng, 242600 China (86) 56-3860-3378 EonCoat Coating manufacturer 551 Pylon Dr., Ste. D Raleigh, NC 27606 (754) 222-4919 www.eoncoat.com PPG Industries Coating manufacturer 3800 W 143rd St. Cleveland, OH 44111 (216) 671-0050 www.ppg.com Shandong Binzhou Anhui Rope & Netting Group Co. Safety equipment manufacturer 1 Jiangzhong Rd. Jianglou, Huimin 251700 China (86) 54-3589-1172

Articles in this issue

Links on this page

Archives of this issue

view archives of CoatingsPro Magazine - MAR 2018