One may recall that the Six Pack reactor was certified, even though it was never completed.
The original blue container reactor plant was certified even though it was never demonstrated to produce even half of its nominal 1 MW nameplate capacity.
And then the blue box certification was cancelled by SGS for abuse of the certificate, but Rossi continued to attempt to use that single use certificate for several more years, even after attempts and warnings from SGS legal department to remove the certificate and any mention of it from Rossi’s websites.