Looks like those stupid bolt extractors have a use after all.
https://www.grainger.com/product/5VUC4?gucid=N:N:PS:Paid:GGL:CSM-2295:4P7A1P:20501231&gclid=EAIaIQobChMI8JHLvOby_AIVBpfICh1Mlg2vEAQYBSABEgJ-ovD_BwE&gclsrc=aw.dsMight need some fancier drills for superalloy bolts. I bet they could not drill into it or something. Bet its seized superalloy. Might not be so easy to repair. But its bad if the super glue is just there for cosmetic reasons, meaning its either extremely light load bearing, or it was covering up a problem that had a redudent screw holding it together (i.e. cosmetic).
But given that this occured in drydock................................. no excuse. Every goddamn problem with a nuclear reactor has something to do with coolant.
So they should have removed the bolt, inspected the bore with a boroscope and measured it to determine if it made to spec, and if a meeting decided it was reasonable and the threads are not otherwise strained, put a new bolt, or drilled and reamed a new hole, threaded it and inspected it and logged the repair...
I can see that some explosives accident with a torpedo, a shock wave damages the cooling pipes that are not supported and then there is a reactor problem and adios muchachos.
But also, those contractors are stupid as hell. That kind of repair can add hours to a repair time bill, if they were smart with the contract. Pretty involved to determine if a threaded hole is proper. Might be as simple as a non coated bolt was used and seized, meaning if it was investigated properly they might have found manufacturing/engineering/spec problems that caused the situation in the first place and uncovered a larger issue, or it was drilled in the wrong place and there was a slight alignment issue, or that it was threaded wrong, or there is incompatible materials. Rushing simple job = information fail.
If you want your contractor company to look good, don't focus on the cheaper price, because maintenance is also inspection/monitoring and it feeds back to quality. If you want your engineering company to look good, then listen to the maintenance workers that find problems.
https://knowledge.faro.com/Hardware/FaroArm_and_ScanArm/FaroArm_and_ScanArm/Measuring_Threaded_Holeshttps://flexiblemeasuring.com/measure-external-internal-thread-pitch-diameter/