via an operational means 22 fig7 as will be described further cover portions 18 20 further include a semi circular overlapping lip portion 19 which would engage the outer surface of housing sidewall 14 when in the closed position as seen in fig1 as illustrated in fig2 the system 10 is illustrated as housing 12 which in reality would be in the preferred embodiment and a section of external casing having a wall thickness of approximately one half inch which would define the housing space 16 therewithin as illustrated housing 12 is positioned atop the end portion of a bell nipple 28 with housing 12 including the circular wall sidewall 14 including a floor portion 32 which in reality would be a plate welded to the bottom end of wall portion 14 and extending inwardly to overlap the ends of bell nipple 28 there would be further included an annular wall member 25 secured to the lower face of floor portion 32 the diameter of annular portion 25 such that it would slidingly engage over the end of bell nipple 28 as indicated in fig2 so that floor portion 32 supporting housing 12 would rest upon the bell nipple as illustrated the inner surface of floor portion 32 would include an outwardly curling lip member 30 rising above the floor portion 32 of housing 12 lip member 30 would include a plurality of ports 31 along floor 32 to drain off fluids and.