Should a toxic gas alarm detection point be installed for the dilute nitric acid tank system?
Thread Content
Dear everyone: I would like to ask whether it is necessary to install toxic gas alarm detectors in the dilute nitric acid tank area, and whether there are any specific requirements regarding this in safety inspections. Anyone with relevant information please let me know!
It is necessary to install toxic gas alarm detection points within the dilute nitric acid tank system. When dilute nitric acid evaporates, it releases corrosive and toxic gases, such as nitrogen dioxide. To ensure the safety of workers and enable timely handling of emergencies such as leaks, it is recommended to install toxic gas detection and alarm systems in the relevant areas. Safety inspections usually lay out clear requirements for the installation of such safety facilities. It is recommended to refer to local safety regulations when making configurations. .
Are there any clear requirements or regulations on this in existing standards? Industry *best practices can also be referred to.
Generally, dilute nitric acid is not required at low temperatures, but it is needed at higher temperatures. The decomposition temperature of nitric acid is about 86℃
Where does the decomposition temperature of nitric acid at 86°C come from?
Personally, I don’t think it’s necessary. From a safety perspective, surveillance systems can be installed to detect issues promptly, but the effectiveness of alarm systems is uncertain
Concentrated nitric acid begins to decompose slowly at 0°C, and the same is true at room temperature; the decomposition rate increases significantly at higher temperatures. When the temperature reaches 86 degrees, nitric acid gas is distilled out. Actually, speaking of the nitric acid decomposition temperature isn’t entirely precise, but at this temperature there is a significant increase in NOx formation; therefore this describes it
We set up the alarm devices mainly to monitor leaks based on NOx levels