N2 line valves at the hydrogenation unit service station
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May I ask if a dual valve is required for the N2 line (0.6 kg) at the on-site service station of the hydrogenation unit? Here, the N2 line has dual valves, while the other steam lines, fresh water lines, and unpurified air lines all have single valves. What is the purpose of such a design?
Prevents suffocation caused by nitrogen leaks to ensure safety?