![\"\"](\"https:\/\/nuflow.net\/wp-content\/uploads\/2022\/06\/Steel-pipe-corroded-by-acidic-condensation.jpg\")
<\/figure><\/li>![\"\"](\"https:\/\/nuflow.net\/wp-content\/uploads\/2022\/06\/Inside-steel-pipe-corroded-by-acidic-condensation.jpg\")
<\/figure><\/li><\/ul>Corrosion to the steel pipes<\/figcaption><\/figure>\n\n\n\n <\/p>\n\n\n\n
In the past, the team at the power station had replaced the damages with stainless steel pipes, but the final elbow of the gas path before it enters the burner is difficult to replace. It would have taken about a week to swap just one out, and they were looking at 6 replacements. With the costs of labour, materials, scaffolding, and other miscellaneous add-ons, they would have been looking at a minimum of 6 weeks work, costing them tens of thousands of dollars.<\/p>\n\n\n\n
With the power station closing in 3 to 5 years, this expense was just not viable, but hoping the pipes would hold up wasn\u2019t an option either. Left as is, they would undoubtedly corrode through, a safety issue the team wanted to avoid given the high-pressure gas within the pipes. <\/p>\n\n\n\n
Senior Mechanical Engineer, Rachelle, knew they needed a natural gas line repair solution that would be a timelier, more cost effective alternative to a full replacement. When she looked into it, she discovered Nuflow\u2019s pipe relining technology, leading her to reach out to the team.<\/p>\n\n\n\n
HTAR resin gets pipes into top quality condition<\/h2>\n\n\n\n
Rachelle explained the situation to Nuflow Wellington owner, Simon, who assessed the best possible solution. The external surface of the elbow closest to the HRSG was about 90\u00b0C, and the exhaust gases themselves were 530\u00b0C, so Simon knew the solution would have to withstand high temperatures.<\/p>\n\n\n\n
He was familiar with HTAR (high temperature, acid resistant) resin, but since it had never been used for this kind of job, he wanted to be sure it was the best option. He contacted Nuflow\u2019s head office and had a chat to the chemist in charge of developing the resins, who was confident that HTAR resin was more than up to the task. So, Simon let Rachelle know that Nuflow had the answer to her problem. <\/p>\n\n\n\n
The power station had an annual shut down period in June when all necessary maintenance could be done. Simon and lead installer, Greg, travelled down during this time get the relining sorted. It took a total of two days on site to get all 6, 80ml steel pipe bends relined with the HTAR resin.<\/p>\n\n\n\n
![\"\"](\"https:\/\/nuflow.net\/wp-content\/uploads\/2022\/06\/HTAR-relining.jpg\")
The HTAR relining process.<\/figcaption><\/figure>\n\n\n\n In fact, there was only around 3 to 4 hours of work within this time, the bulk of which was on the first day during the installation of the HTAR resin. Day 2 was simply a matter of removing the bladder and trimming it up, leaving the relined gas pipes as good as new. \u00a0<\/p>\n\n\n\n
![\"\"](\"https:\/\/nuflow.net\/wp-content\/uploads\/2022\/06\/HTAR-relined-pipe.jpg\")
Completely relined pipe.<\/figcaption><\/figure>\n\n\n\n <\/p>\n\n\n\n
Another Nuflow client left satisfied<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h2>\n\n\n\n
Rachelle and the whole team at the power station couldn\u2019t have been happier with Nuflow\u2019s gas pipe repair. All maintenance was completed within the shutdown period, and the cost was significantly lower than it would have been for full replacements. <\/p>\n\n\n\n
Rachelle even sent through a photo of the gas pipes months after Simon and Greg left, and the relining looked as good as the day it was installed. The power station was seeking something that would have lasted 3 to 5 years, and instead were delivered a solution that will stand the test of time well after the power station shuts down.<\/p>\n\n\n\n
This permanent solution meant yet another happy Nuflow customer, who has complete peace of mind that the newly relined pipes won\u2019t be an issue again. \u00a0\u00a0<\/p>\n\n\n\n
Need a similar solution? Nuflow\u2019s here to help.<\/strong><\/h2>\n\n\n\n