Quote Originally Posted by Riccardo View Post
Does anyone knows which kind of inspection needs the foundation of tank and with which frequency?

Does exist any norms with this kind of indications?

Many thanks

Riccardo
I'm not sure but I guess "APPENDIX I-UNDERTANK LEAK DETECTION AND SUBGRADE PROTECTION" from

[link Point to another website Only the registered members can access]
I believe when using any leak detection system, an inspection at least once a week could be enough

Regards