Originally Posted by Engine Serang
"replacing 284 hull valves"
2 inspection of ship side valves is a surveyable item at 5 yearly intervals, hence their removal for inspection.
False news or alternative facts?
Perhaps lost in translation. Although being the RN/MOD I must admit there's every possibility they'll just remove and replace rather than inspect/overhaul and replace, especially after the shambles with Endurance.