cleaning an abused boil kettle

[smokkin]

i let my buddy borrow my converted keg so he could do his first full 5 gal boil, on the condition that he cleans it and takes care of it. just got to his house to find it rusting and a nice layer of solidified PBW on the bottom. i plan on scrubbing it with a stainless scrub pad, and his carboy is going to get a nice surprise before i leave. any suggestions on fixing this keg/kettle?

[Triple Freak]

Buy some BKF & use it.

[Ozbrewer]

i nice soak in some caustic soda will fix it with out to much effort

[hotrod38]

TSP Trisodium phosphate, or TSP substitute work well too. All paint stores and home improvements stores carry it.

[Ziggy-san]

Dude, not cool.

If you scrub it, make sure to passivate it again to prevent further rust. Palmer has some stuff on brewing metallurgy at:

http://www.howtobrew.com/appendices/appendixB.html

with the specifics on passivating stainless steel here:

http://www.howtobrew.com/appendices/appendixB-1.html