I really appreciate all the replies I have received. The buffing is complete now and is going to be sent to penske in spart sc to go thru the passivation process. By the way it was buffed with scotch brite pads, no shavings were present, will be wiped down before passivation, their process...
it was loaded at a 2ppm and has a transit time of 25hrs. customer used to not test, but new accts desire Fe under 30ppm. The tank was entered and had no foreign debris. Just extremely burnt,(more than usual). This specific tank has successfully pulled these loads before with no problem...
nitric acid was starting to raise in iron. noticed extra char on 412 316ss acid trailer that has handled many loads before. In the process of getting tank buffed. Will it need to be pickled or passifyed after the buff job if we intend on hauling more nitric acid and nitrating acid mixtures...
