Cleaning a 55 gal drum

[s_kelley]

Ok guys I need some advice yet again. Im picking up a 55 gallon food grade barrel tomorrow. Im told it has clam broth remnants in it and there are only two "bung" openings on it. I have no idea how big these are.
I know a bunch of you guys use these for RO/DI and thats what im hoping to do also. What did you guys use to clean yours and how did you do it?
Are the openings big enough to get my arm in and scrub the inside or do I cut larger openings into it?
Any suggestions?
Thanks,
Shane

 

[Cherokee_Dude]

You could use a powerwasher (No soap) on the inside without cutting and a couple of quick vinegar soaks, rinse and air dry should do it!

 

[s_kelley]

Would the vinegar do anything to the water quality after it dries?