Recommend anchor bolts for 12% Soduum Hypochlorite tank
Recommend anchor bolts for 12% Soduum Hypochlorite tank
(OP)
Hello Everyone,
I need to select some type of anchor bolt to attach a polyethylene tank to a concrete foundation inside a secondary containment basin. The tank holds a 12% solution of Sodium Hypochlorite. I plan to paint the secondary containment basin with a Vinyl Ester coating to protect the concrete. I'd like to anchor the tank with bolts that will resist a Sodium Hypochlorite spill. Can I use galvanized steel anchor bolts or SS304 bolts or something else? Any suggestions would be greatly appreciated.
Thanks in advance.
I need to select some type of anchor bolt to attach a polyethylene tank to a concrete foundation inside a secondary containment basin. The tank holds a 12% solution of Sodium Hypochlorite. I plan to paint the secondary containment basin with a Vinyl Ester coating to protect the concrete. I'd like to anchor the tank with bolts that will resist a Sodium Hypochlorite spill. Can I use galvanized steel anchor bolts or SS304 bolts or something else? Any suggestions would be greatly appreciated.
Thanks in advance.





RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
Thanks for your reply. Duration is hard to say. The power plant may not fix leaks in the pumps or piping system in a timely manner. At this point in my design, I'd just like to digest all the comments I receive and make an educated best guess.
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
We have various polyethylene sodium hypochlorite storage tanks for bio-treatment of our discharge water at several of our power plants and the tanks are supported by carbon steel supports in a concrete containment. Never had an issue with failure of the legs or even corrosion from exposure to sodium hypochlorite solution. The legs are painted to protect from atmospheric corrosion.
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
Thanks for your reply. The tanks you describe sound similar to mine. I have several tanks, ea. 2,500-gal, supported on elevated steel (painted) supports. For now, I plan to use SS 316 anchor bolts (with nuts & washers) to connect the painted steel frame to the foundation. I know that I have potential galvanic action between the SS 316 anchor bolts and the painted base frame so I also plan to install PVC insulating washers between the painted steel base frames & the SS 316 washers. I think that if there is a future spill, the foundation & anchor bolts will still be good. But if the painted steel base frame is damaged, then the plant can easily just purchase another support from the tank Manufacturer.
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
Steve
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
If the painted steel frame is suitable for this service, a coated steel fastener also should be suitable. I recommend a resin-bonded PTFE coating for the bolt, which has good chemical and corrosion resistance.
Some potential coatings are Xylan from Whitford and Fluorokote from Metal Coatings Corp.
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank
It is a lot easier to spot corrosion on these and repair them than to identify a SS bolt that is about to snap from SCC.
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Plymouth Tube
RE: Recommend anchor bolts for 12% Soduum Hypochlorite tank