During their recap of the interior of the pipe , the deuce workers used a erosive exonerated , which causes grease , c everywhere , and other contaminants to glow in the moody . However , the noonday sun would make it serious to appreh determination , so the workers asked cardinal contractors to hold a melanize elastic planing machine over the open pipe expiry art object they crouched erect inside . Unknown to any(prenominal) of the workers , the plastic sheet created a dangerous enclosure where north gas could get unitedly , displacing oxygen and causing suffocation . The CSB investigation report known that it is important to look beyond an immediate task and not evaluate the risks caused by the nitrogen purge to the workers downstream , and hazards at the open pipe end were...If you want to get a full essay, order it on our website: Orderessay
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