Hello, everyone! I'm Steve, thanks for such a great community over here at homebrewtalk, I've been lurking for a long time and decided to sign up. So in my never ending quest to put together a single tier rims system as inexpensive as possible I came across a guy who will give me a 15.5 keg that he once used as a gas tank. Do you guys all think it would be safe to use cleaned? Will it be completely cleanable? Any ideas on how to clean it? Let me know what you all think. Thanks!