Question 3210 Deck General

The correct answer is B) shale shaker. On a MODU (Mobile Offshore Drilling Unit), the shale shaker is the best location to install air movers (bug blowers) to dilute the concentration of H2S (hydrogen sulfide) gas during well drilling. This is because the shale shaker is where the drilling mud, which may contain H2S, is processed and circulated back into the well. Placing the air movers at the shale shaker helps to effectively dilute and disperse any H2S that may be present, reducing the risk of exposure to personnel. The other options, A) pipe rack and C) crown block, are not the optimal locations for the air movers as they are not directly involved in the circulation and processing of the drilling mud, where the H2S is most likely to be encountered.