Mechanical: ETCS(SS) May.

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#5. Bench grinder---63.6% Bench grinders showed evidence that the wheel was used to grind nonferrous material. Hazard: The build up of this material on the wheel can cause wheel imbalance and possible disintegration while in use. Solution: Don't use the ship's grinder to grind non-ferrous materials. The use of a dressing tool helps eliminate grinding wheel imbalance. REF: OPNAVINST 5100.19E D0804 g.3.f

#4. Steam kettle--66.7% submarines had not accomplished the hydrostatic test of the steam jacket and discharge line (36 months) and either have not conducted annual relief valve testing or the identification tags were missing. REF: MIP …