Safety Technology Zone “One Question per Day” 01.06 (Issue 3)
Thread Content
This post was last edited by ythchxch on 2012-1-7 23:13. 1. Heinrich summarized the causal chain process of accidents into five elements, and used dominoes to illustrate this causal relationship in accidents. The five elements are (D). A. Human errors, unsafe behaviors of humans or unsafe conditions of objects, accidental release of energy, accidents, injuries B. Genetic and social factors, human errors, failure of shielding mechanisms, accidents, injuries C. Human errors, management deficiencies, unsafe behaviors of humans or unsafe conditions of objects, accidents, injuries D. Genetic and social factors, human errors, unsafe behaviors of humans or unsafe conditions of objects, accidents, injuries 2. There are various methods for achieving intrinsic safety in machinery. For example, (A) reducing or eliminating the number of times operators come into contact with dangerous parts of the machine ； (B) Provide protective devices or personal protective equipment ； (C) Eliminate the causes of the hazardous condition ； (D) Make it difficult for personnel to access the dangerous parts of the machine. According to the principles of mechanical intrinsical safety, the priority order of the above four methods is (A). A. (C) - (A) - (D) - (B) B. (A) - (B) - (C) - (D) C. (D) - (C) - (B) - (A) D. (C) - (D) - (A) - (B) Notes: 1. Please hide the answer when responding; editing after posting is invalid! All items that are not hidden will be deleted: For details on how to hide them, see the post at http://bbs.hcbbs.com/thread-492556-1-1.html. 2. Deadline: January 7, 2012, at 10:00. 3. Please try to provide reasons when answering questions; spam is not allowed! 4. Scoring criteria: Moderators assign scores based on the accuracy of the answers; 1 wealth participation prize for all wrong answers, and 5 wealth rewards for all correct answers ； If there are two questions and only one is answered correctly, the score is 3 wealth ； 5. The answer key will be released in the next issue! 6. Each event will be summarized on http://bbs.hcbbs.com/viewthread.php?tid=951374&extra= Topic for Issue 2: http://bbs.hcbbs.com/thread-951570-1-1.html Answers for Issue 2: 1.D 2.B
1. Heinrich summarized the causal chain process of accidents into five elements, and used dominoes to illustrate this causal relationship in accidents. The five elements are (d). 2. There are various ways to achieve mechanical intrinsical safety. For example, (A) reducing or eliminating the number of times operators have to de-energize hazardous parts of the machine ； (B) Provide protective devices or personal protective equipment ； (C) Eliminate the causes of the hazardous condition ； (D) Make it difficult for personnel to access the dangerous parts of the machine. According to the principle of mechanical intrinsic safety, the priority order of the above four methods is (b).
1.B 2.D !!!!!!
CD replied 1# ythchxch
Reply 1# ythchxch C,A
Reply 1# ythchxch D, D