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Hello, I'm Dr. Branch, thanks for using JustAnswer. I'm reviewing your question now, and will respond back to you soon.
A louder than normal pop would suggest there was increased pressure in the can, which could be due to many reasons, but as long as the beans appear normal, I wouldn't be concerned. I would just try eating one to make sure it tastes alright, and if so, I would consider them safe to eat.
I hope that helps, please let me know if you have any other questions about that, and I would be glad to discuss it with you further.