Which code is appropriate for the layout of liquefied C4 olefin spheres?

My colleague said that it depends on which category the project falls into; one should use the standards required for that category. For example, if a project is in the petrochemical industry, then petrochemical regulations must be followed, and construction regulations need not be considered! Is that the case? I feel uneasy

Reply 2# show*umouse is like this. The project should first determine the standards to be used and understand their scope of application, as there are many similar standard specifications in our country, and inconsistencies exist among them.

It should be arranged in accordance with the regulations on liquefied hydrocarbons in the petroleum codes; C4 also belongs to liquefied hydrocarbons, so it is not appropriate according to the construction codes!

Mixed C4 (LPG) Hazard classification: Category 2.1 – Flammable gas. Route of exposure: Inhalation. Health hazards: This product has **effects**. Acute poisoning: symptoms include dizziness, headache, excitement or drowsiness, nausea, vomiting, and a slow pulse ； In severe cases, the patient may suddenly collapse, experience urinary incontinence, lose consciousness, and even stop breathing. It can cause frostbite to the skin. Chronic effects: Prolonged exposure to low concentrations may lead to headaches, dizziness, poor sleep, easy fatigue, mood instability, and autonomic nervous system disorders. 　　 Environmental hazards: It is harmful to the environment and can pollute water bodies, soil, and the atmosphere. Fire and explosion hazard: This product is flammable and has ** properties. Skin contact: Seek medical treatment if frostbite occurs. Inhalation: Quickly move to a place with fresh air. Keep the airway clear. If there is difficulty breathing, administer oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention. Hazardous properties: Highly flammable; can form explosive mixtures when mixed with air. There is a risk of combustion and explosion in the presence of heat sources and open flames. It undergoes violent chemical reactions when in contact with fluorine, chlorine, etc. Its vapor is heavier than air, allowing it to spread over considerable distances at lower levels; it will catch fire and reignite when exposed to a source of flame. Harmful combustion products: carbon monoxide, carbon dioxide. Fire extinguishing method: Cut off the gas supply. If the gas supply cannot be cut off, it is not allowed to extinguish the flame at the leak site. Use water spray to cool the container; if possible, move the container away from the fire to an open area. Extinguishing agents: fogged water, foam, carbon dioxide. Emergency response: Quickly evacuate people from the area contaminated by the leak to an upwind location, isolate the area, and strictly restrict access. Cut off the source of fire. It is recommended that emergency responders wear self-contained positive-pressure breathing apparatus and anti-static work clothing. Do not come into direct contact with the spill. Seal the source of leakage as much as possible. Cover areas such as sewers near the leak site with industrial coverings or adsorbents/sorbents to prevent gases from entering. Ensure proper ventilation to accelerate diffusion. Dilute with spray water. Leaking containers must be properly handled, repaired, and inspected before being used again. Operational precautions: Perform operations in a closed environment with thorough ventilation. Operate in a closed environment with good natural ventilation. Operators must receive specialized training and strictly adhere to operating procedures. It is recommended that operators wear filtered gas masks (half-masks) and anti-static work clothing. Stay away from sources of fire and heat; smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent gas from leaking into the workplace air. Avoid contact with oxidizers and halogens. During transfer, gas cylinders and containers must be grounded and bonded to prevent the generation of static electricity. Handle with care during transportation to prevent damage to the cylinders and accessories. Equipped with fire-fighting equipment of appropriate types and quantities, as well as emergency response equipment for leaks. Storage precautions: Store in a cool, well-ventilated warehouse. Keep away from flames and heat sources. The storage temperature should not exceed 30°C. It should be stored separately from oxidizers and halogens; mixed storage is strictly prohibited. Use explosion-proof lighting and ventilation facilities. The use of mechanical equipment and tools that can generate sparks is prohibited. The storage area should be equipped with emergency equipment for dealing with leaks. Appendix 2-1: Table of Occupational Exposure Limits. Occupational exposure limits: China’s MAC (mg/m3): 1000; Former Soviet Union’s MAC (mg/m3): No standard established. TLVTN: ACGIH – 1000 ppm, 1800 mg/m3. TLVWN: No standard established. Monitoring method: Gas chromatography. Engineering controls: Enclosed production processes and comprehensive ventilation. Provide good natural ventilation. Respiratory protection: In environments with high concentrations, it is recommended to wear a filtered gas mask (half-mask). Eye protection: No special protection is generally required, but chemical safety goggles can be worn in cases of high-concentration exposure. Body protection: Wear anti-static work clothes. Hand protection: Wear general-purpose protective gloves. Other protections: Smoking is strictly prohibited at the work site. Avoid inhaling high concentrations. When entering tanks, confined spaces, or other areas with high concentrations, supervision must be provided. Appendix 2-2: Table of Physical and Chemical Properties. Appearance and properties: colorless gas or yellow-brown oily liquid, with a distinctive odor. pH value: Melting point (°C): No data Available. Relative density (water = 1): No data available. Boiling point (°C): No data available. Relative vapor density (air = 1): No data available. Octanol/water partition coefficient: No data available. Flash point (°C): -74. Ignition temperature (°C): 426–537. Upper explosive limit: 33. Lower explosive limit: 5. Solubility: Main uses: Used as a raw material in the petrochemical industry; can also be used as a fuel. Stability: Stable. Incompatible substances: Strong oxidizing agents, halogens. Conditions to avoid contact: Polymerization hazards: Does not polymerize. Acute toxicity: LD50: No data available; LC50: No data available. Other harmful effects: This substance is harmful to the environment; special attention should be paid to preventing contamination of surface water, soil, air, and drinking water. Waste disposal method: Relevant ** and local regulations should be consulted prior to disposal. Incineration is recommended as a disposal method. Hazardous goods code: 21053 UN number: 1075 Packaging mark: Flammable gas ； Toxic gas. Packaging category: O52. Packaging method: steel gas cylinder. Transportation precautions: For railway transportation of this product, it must be shipped in tank cars provided by the enterprise that handles pressurized liquefied gas, and approval from the relevant authorities is required prior to shipment. Cylinders containing liquefied petroleum gas (i.e., propane cylinders) are prohibited from railway transport. When transporting cylinders, it is necessary to wear the safety cap on the cylinder. Gas cylinders should generally be placed flat, with their openings facing the same direction; they must not be crossed ； The height must not exceed the vehicle’s guardrail, and it should be secured with wooden blocks to prevent it from rolling. Transport vehicles should be equipped with fire-fighting equipment of the appropriate type and quantity during transportation. The exhaust pipes of the vehicles used to transport this item must be equipped with flame arrestors, and the use of mechanical equipment and tools that may generate sparks for loading and unloading is prohibited. Mixing or transporting it with oxidizers, halogens, etc. is strictly prohibited. During summer, transportation should take place in the early morning or late evening to avoid exposure to sunlight. When making stops en route, stay away from sources of fire and heat. When transporting by road, follow the designated routes and do not stop in residential areas or densely populated zones. Sliding is prohibited during railway transportation.

Either building codes or petrochemical industry codes can be used; the key is that the overall layout must be planned in accordance with a single set of standards. It’s not acceptable to apply petrochemical industry codes in some areas and building codes in other areas.

Generally, storage and transportation projects are classified under the petrochemical industry, allowing for layout planning in accordance with GB 50160. Moreover, the general layout can be designed in accordance with Class 1 specifications.

1 Chemical hazards: Propylene has ** and asphyxiant effects; when mixed with oxygen, it exhibits ** effects. When mixed with air, its asphyxiant effect is greater than its ** effect. Inhaling propylene can cause loss of consciousness. Working in high-concentration environments can cause dizziness, fatigue, general discomfort, and difficulty concentrating; in some individuals, it may also lead to gastrointestinal disorders. 2 Protection, First Aid, and Leak Handling 2.1 Protection When working in tank areas and other areas with high concentrations, supervision is required ； Wear protective glasses, protective gloves, and anti-static clothing during the operation ； When exposed to high concentrations, wear a self-contained breathing apparatus. 2.2 First aid: In case of inhalation, quickly leave the scene and go to an area with fresh air upwind. Give oxygen when experiencing difficulty breathing, and seek medical attention. 2.3 Leak handling: Evacuate the area contaminated by the leak promptly, move people to the upwind side, and extinguish any sources of fire. Emergency responders wear self-contained breathing apparatus and fire protection suits. Dilute with spray water and ensure good ventilation.

It is recommended to use GB 50160-2008, the latest **standard. Reason: **Standards should be the minimum requirements that companies should meet; it’s just my personal opinion.**

Only the petrochemical regulations can be used, as the general provisions of the building codes clearly specify the areas where those codes do not apply.

According to GB50160, there are no issues with implementing this in liquefied hydrocarbon storage areas