Does the 1000m3 oxygen storage tank constitute a major source of danger?

The critical amount of oxygen is not listed in "GB18218-2000 Identification of Major Hazardous Sources". There is no critical amount of oxygen in OSHA PSM. The critical amount of oxygen is given in the Seveso Directive as 200/2000 tons.

I don’t know much about this, so I’ll try to answer it.: If it is a separate oxygen storage tank, I think it should not pose a major source of danger under normal pressure. Oxygen is not a flammable substance and is safe under normal pressure and is not prone to explosion.

There are no relevant provisions in the "Identification of Major Hazard Sources" and the "Guiding Opinions on the Supervision and Management of Major Hazard Sources". I personally believe that the 1000m3 oxygen storage tank does not constitute a major hazard source.

Pressure vessels that meet one of the following conditions: (1) Class III pressure vessels with extremely, highly or moderately hazardous media toxicity ； (2) Pressure vessels (groups) for flammable media, with maximum working pressure ≥ 0.1MPa and PV ≥ 100 MPa×m3. Therefore, the 1000m3 oxygen storage tank does not constitute a major source of danger.

I haven’t seen it in the relevant regulations, so I guess it’s not the case.

I really don’t know about this, but oxygen has combustion-supporting and oxidizing properties, and a large leakage will also pose a threat to human life. And the 1000m3 oxygen storage tank is not small, even if it cannot reach major danger sources, it is still dangerous.

Oxygen does not belong to the substances specified in GB18218-2000 "Identification of Major Hazard Sources" and does not constitute a major hazard source.

If according to* * According to the "Guiding Opinions on the Supervision and Management of Major Hazardous Sources" issued by the Work Safety Supervision Bureau No. 56, it should be considered as a pressure vessel, but its medium, oxygen, belongs to Category 2.2 non-flammable gas. It is neither a medium with extreme, high or moderate toxicity, nor a flammable substance, so it does not constitute a major source of danger for pressure vessels.

Looking at the pressure level of the storage tank, I personally think it can be regarded as a major hazard source for the enterprise.

Whether it constitutes a major hazard source shall be based on GB18218.

According to GB18218 and Document No. 56, it does not belong!

"Identification of Major Hazard Sources" and "Guiding Opinions on Carrying out Supervision and Management of Major Hazard Sources"* * There are no oxygen provisions in the Work Safety Supervision Bureau's No. 56 document, so the oxygen tank does not pose a major source of danger.

From the perspective of relevant regulations and standards, oxygen storage tanks do not constitute a major hazard source and are not within the scope of major hazard source declarations. Since this is stipulated in this way, it should be implemented in accordance with it. But I think that some of the current concepts and content about major hazard sources are a bit confusing, with no prominent focus and no classification requirements. A 1,000 cubic meter ethanol tank is definitely much more dangerous than a 50 cubic meter ethanol tank, but they are all major hazard sources and do not reflect the characteristics of light, heavy, slow and urgent. They need to be revised, and national standards and regulations must be consistent and not compete with each other. The frame should be unique. For example, the national standard for ammonia production sites has a critical mass of 40 tons (hazardous substances), while the critical mass in the major hazardous source declaration scope is 2 tons (combustible gas). The national standard refers to liquid ammonia storage tanks, and the regulations refer to ammonia gas storage tanks. I am confused and have to explain it in person. If I understand it, it is OK, but what should I do if I don’t understand it? It is a dilemma.

It’s great that everyone has a good grasp of laws, regulations and opinions. I just learned about the Work Safety Bureau’s No. 56 “Guiding Opinions on the Supervision and Management of Major Hazardous Sources” today. I wonder how you remember these laws and regulations? hehe

Pressure vessels that meet one of the following conditions: (1) Class III pressure vessels with extremely, highly or moderately hazardous media toxicity ； (2) Pressure vessels (groups) for flammable media, with maximum working pressure ≥ 0.1MPa and PV ≥ 100 MPa×m3. Therefore, the 1000m3 oxygen storage tank does not constitute a major source of danger.

This is something we often use in our daily work. It’s just a basic skill, just like an oil seller.: There is no such thing as this, only your hands are familiar with it

This also depends on the local regulatory authorities. Some provinces only recognize GB18218-2000 and do not adopt Document No. 56.

Not included in GB18218, not considered a major hazard source

To check whether it is a major hazard source, you should check "GB18218-2000 Identification of Major Hazard Sources". The critical amount of oxygen is not listed in it, so it should not be the case.