The circular metal cover/lid of the oil pump's shaft on 3.1L V6 engine, leaking? on 1995 Chevrolet Lumina

Chevy Lumina 95 3.1L V6 engines do not use iginition distributor and its shaft, so there is a circular cover on top the engine on the driver side, near the ridge between the two cylinder heads. Also there seems to be a screwed-in metal plate that locks this lid!

Can this circular metal lid/cover leak out engine's oil, if not installed well?

Thanks for your responses!

Asked by for the 1995 Chevrolet Lumina