【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 085
Thread Content
【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 085: Briefly describe the methods for dealing with a failure of the cold high-pressure cut-off valve ①② Change the boundary control valve to manual mode; refer to the on-site glass liquid level gauge to maintain a stable cold high-level boundary and liquid level. ③ Contact the instrumentation team for handling. ④ Once the fault is resolved, switch back to automatic control. ⑤ Check whether the boundary level is tracking properly. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
First, check the DCS curve to identify a previously reasonable valve opening value, and then contact the instrumentation team immediately to take action. At this time, attention can be paid to the opening degree controlled by the cold high-level liquid level, or to the changes in the liquid level. A large increase in the opening degree may indicate that the level is too high, while a decrease in the opening degree may suggest that the level has dropped to zero. Make appropriate adjustments.
Reduce the drainage flow, send someone to check the liquid level on site, make adjustments accordingly based on the actual level, and contact the instrumentation team promptly for assistance
Close the cold high-acidity water discharge valve, send the water to the cold low-pressure section, use the cold low-pressure section for water separation, and notify the instrumentation team promptly to calibrate the instruments.
①Change the boundary control valve to manual mode； ②Refer to the liquid level of the on-site glass level gauge to stabilize the cold high-temperature interface level and liquid level ； ③Contact the instrument handler ； ④Once the fault has been resolved, switch back to automatic control ； ⑤Check whether the observation level is tracking normally.
Change the boundary control valve to manual mode； Check the on-site liquid level ；
①Change the boundary control valve to manual mode； ②Refer to the liquid level of the on-site glass level gauge to stabilize the cold high-temperature interface level and liquid level ； ③Contact the instrument handler ； ④Once the fault has been resolved, switch back to automatic control ； ⑤Check whether the observation level is tracking normally.
①Change the boundary control valve to manual mode. ② Refer to the glass liquid level gauge on site to maintain a stable level at the cold high-pressure boundary and the liquid level. ③ Contact the instrumentation team for handling
①② Change the boundary control valve to manual mode; refer to the on-site glass liquid level gauge to maintain a stable cold high-level boundary and liquid level. ③ Contact the instrumentation team for handling. ④ Once the fault is resolved, switch back to automatic control. ⑤ Check whether the boundary level is tracking properly.
①② Change the boundary control valve to manual mode; refer to the on-site glass liquid level gauge to maintain a stable cold high-level boundary and liquid level. ③ Contact the instrumentation team for handling. ④ Once the fault is resolved, switch back to automatic control. ⑤ Check whether the boundary level is tracking properly.
①② Change the boundary control valve to manual mode; refer to the on-site glass liquid level gauge to maintain a stable cold high-level boundary and liquid level. ③ Contact the instrumentation team for handling. ④ Once the fault is resolved, switch back to automatic control. ⑤ Check whether the boundary level is tracking properly.