The Nuclear Navy has the most unforgiving standards in safety and technical proficiency. I’m only surprised that they’re not bringing him up on UCMJ charges.
You can’t really bring the CO up on NJP/UCMJ charges - unless he knew about or covered up the false logs. Not knowing about falsified logs isn’t a court martial offense, after all, the logs were being faked to hide an offense. The ELT’s were the ones guilty.
The LPO, MPA, Eng should have seen it the first (or second) day: if this were reactor water samples (and the writer is either not able to tell us, or doesn’t know enough to tell the difference between SG water CL samples and primary water samples!) the EOOW and EWS will have noted the lineup changes.
HIS job was to make sure it didn’t happen - rather, to make sure that the logs AND (more importantly!) the daily reactor water samples WERE TAKEN and taken safely and the reactor was operated safely.