Daily Question, June 7, 2016 – Catalysis Section: Conditions for entering manholes for work
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True or False: As long as the tower is steamed within the specified time and the manhole is opened, a permit can be obtained to proceed with the work. Correct answer: After the device has been purged and the tower has returned to normal temperature, gas sampling and analysis should be conducted at the manholes located in the middle and lower sections of the tower to determine whether it is safe to work inside the tower. Promotion of petrochemical-related activities: ☛Notice on the launch of the large-scale event “I’m saving energy; where are you?” in the petrochemical area: http://bbs.hcbbs.com/thread-1579199-1-1.html (Source: Haichuan Chemicals Forum). This event offers awards in both text and image categories. When there are over 200 entries, an additional grand prize will be awarded, worth 600 Haichuan coins; if there are more than 300 entries, the grand prize value increases to 1,000 Haichuan coins, and for 500 entries it rises to 1,500 Haichuan coins. First prize: 3 Haichuan commemorative water cups; second prize: 5 winners, each receiving 120 Haichuan coins; excellence awards: several winners, each receiving 200 Haichuan coins. --------------------------------------------------------------------------------------------------------- ☛“My facility, my home” – Photo competition (10 Haichuan coins per photo): http://bbs.hcbbs.com/thread-1495069-1-1.html (Source: Haichuan Chemicals Forum). --------------------------------------------------------------- ☛Haichuan Freelancers’ large-scale “public welfare” event is now underway! http://bbs.hcbbs.com/thread-1576975-1-1.html (Source: Haichuan Chemical Industry Forum) Looking forward to your participation
Wrong; a permit for working in confined spaces should only be issued after it is confirmed that the sampling meets the requirements
Detection of combustible gas levels, toxic gas levels, and oxygen content
As long as the tower is steamed at the specified time and the manhole is opened, a permit can be obtained to proceed with the work. (X)
Wrong,×~~~~~~~~~
Error； Strict compliance with the five regulations for working in confined spaces is mandatory; the temperature inside the tower behind the vaporizer must be reduced to an appropriate level, gas detection and analysis must show satisfactory results, necessary protective measures as well as emergency response preparations must be in place, and supervisors must be on site ； Additionally, for some equipment, it is necessary to prevent ferrous sulfide from self-igniting after the manhole is opened.