【Daily Question No. 35】April 2, 2017
Thread Content
When working in confined spaces, entry is prohibited when the oxygen level in the area is below ( ), to avoid suffocation accidents. Correct answer: 18%. The Petrochemical Advanced Processing edition – the event for sharing pictures of chemical equipment has started! A vast amount of wealth, along with HaiChuan coins, is waiting for you to claim! http://bbs.hcbbs.com/thread-1760733-1-1.html Summary post for the Petrochemical Deep Processing section’s [Daily Question] – updated daily by the moderator. http://bbs.hcbbs.com/thread-1496481-1-1.html Summary post of Q&A sessions~~~ Continuously being updated. http://bbs.hcbbs.com/thread-1761172-1-1.html Summary post of weekly topics for the Petrochemical Deep Processing section~~~ Continuously being updated! http://bbs.hcbbs.com/thread-1751483-1-1.html Petrochemical Zone—New Ideas for Energy Savings: The “Creative Thinking” Campaign http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones await you
When working in confined spaces, entry is prohibited if the oxygen level in the area is below 18%, to avoid suffocation accidents
19.5%-23.5%