Safety Technology Exchange Edition: Daily Question (2016.8.9)

Thread Content

This post was last edited by 68589544 on 2016-8-17 01:45. Promotion of activities: 1. The Safety Edition is conducting a campaign to collect advanced practices from the field, http://bbs.hcbbs.com/thread-1602995-1-1.html. 2. The Environmental Protection Edition is carrying out the “Share a Blue Sky” campaign, http://bbs.hcbbs.com/thread-1602605-1-1.html. 3. The Petrochemical Division is holding a voting campaign titled “I’m Saving Energy – Where Are You?”; my vote number is 22, so don’t forget to vote for me, http://bbs.hcbbs.com/thread-1606794-1-1.html. Daily question (single-choice): 1. Which of the following is the correct procedure for conducting a boiler hydrostatic test? ____A. Slowly increase the pressure to the test pressure and maintain it for at least 20 minutes to check for any leaks or abnormalities. B. Slowly increase the pressure to the test pressure, maintain it for at least 20 minutes, then slowly reduce the pressure to the operating pressure for inspection. C. Slowly increase the pressure to the operating pressure to check for leaks or abnormalities; then continue to increase the pressure to the test pressure, maintain it for at least 20 minutes, and finally slowly reduce the pressure back to the operating pressure for inspection. D. Slowly increase the pressure to the operating pressure to check for leaks or abnormalities; then continue to increase the pressure to the test pressure for inspection, maintaining it there for at least 20 minutes. 2. When a pressure vessel experiences overpressure or overheating, which of the following emergency measures is correct? ____ A. Stop feeding the material; for toxic, flammable, and explosive substances, open the vent pipe to discharge the material to a safe location. B. Stop feeding the material and close the vent valve. C. Gradually reduce the flow of material fed in, while closing the vent valve. D. Gradually reduce the flow of material fed in; for toxic, flammable, and explosive substances, open the vent pipe to discharge the material to a safe location. C; A