It depends on what has failed. Lids, neck plugs, castors, racking, level and temperature monitoring, hoses and phase separators are all serviceable parts and replacing them is routine. A vessel with one of those faults is not a failed vessel.
Loss of vacuum in the annular space is different. On most laboratory storage vessels the vacuum jacket is not designed to be re evacuated in the field, and a vessel that has lost it will run at a consumption rate that makes it unsafe to rely on for sample storage. In that case the sensible route is to move the samples to a known good vessel first, then replace. Never leave samples in a vessel with a rising consumption trend while a decision is pending.
If you are unsure which case you are in, the consumption log usually answers it.
