GRRR
Chemical
- May 27, 2003
- 1
We are in design process of for a large tank farm (4-tanks, 300K gallons each, one spare), for use in RCRA waste tank farm on a fast-tracked project. Tanks will be insulated and heated to maintain fluid temperature of 100F.
Waste will contain less than 10% NaOH, water, and less than 40% organic, some of which (5-10% total) will separate out in an upper layer during storage.
Waste may be stored from several months to 2 years before disposal facility can be constructed. Iron contamination for one of the potential treatment processes is an issue.
Organics will consist of a relatively large-chained mercaptan, Ethylmethyl Phosphonic Acid (EMPA), Methyl Phosphonic Acid (MPA), relatively large-chained disulfide, and other organics of small concentration. Tanks will have nitrogen blanketing.
Designer is recommending a epoxy lining (Plasguard 9052) concern has been raised about epoxy coating failures with respect differences in thermal expansion of the coating versus underlying carbon steel (tank diameter is 42 ft), coating rigidity, and/or acceration of epoxy coating adhesion loss with respect to "hot water" acceration.
I am interested in hearing from someone with experience with coating large tanks storing similar materials.
Thanks![[dazed] [dazed] [dazed]](/data/assets/smilies/dazed.gif)
Waste will contain less than 10% NaOH, water, and less than 40% organic, some of which (5-10% total) will separate out in an upper layer during storage.
Waste may be stored from several months to 2 years before disposal facility can be constructed. Iron contamination for one of the potential treatment processes is an issue.
Organics will consist of a relatively large-chained mercaptan, Ethylmethyl Phosphonic Acid (EMPA), Methyl Phosphonic Acid (MPA), relatively large-chained disulfide, and other organics of small concentration. Tanks will have nitrogen blanketing.
Designer is recommending a epoxy lining (Plasguard 9052) concern has been raised about epoxy coating failures with respect differences in thermal expansion of the coating versus underlying carbon steel (tank diameter is 42 ft), coating rigidity, and/or acceration of epoxy coating adhesion loss with respect to "hot water" acceration.
I am interested in hearing from someone with experience with coating large tanks storing similar materials.
Thanks
![[dazed] [dazed] [dazed]](/data/assets/smilies/dazed.gif)