This is a very technical question about repairing a petroleum product pipeline leak. Let's answer it in detail. How do you repair a gasoline or diesel main pipeline leak?
A main pipeline leak is an emergency and must be handled according to strict safety procedures and a professional repair plan. The basic process is as follows:

🧿Step 1: Emergency Response and Safety Preparation

1. Immediate Reporting: Immediately report the leak location, volume, and on-site conditions to the dispatch center and control room.

2. Activate the Emergency Plan: Immediately activate the appropriate emergency plan, evacuate nearby personnel, establish a cordoned-off area, and prohibit all sources of ignition (such as open flames, cell phones, sparks, and vehicle stalls).

3. Processing: The dispatch center will remotely or instruct on-site operators to perform process operations, typically including:

Pump Stop: Stop pumping.

Pressure Reduction: Isolate the leaking pipeline section using upstream and downstream valves, open the pressure relief valve, and divert the oil in the section to an emergency tank or vent it to minimize the pressure in the pipeline. This is the prerequisite for all subsequent repair operations. 4. Environmental Protection: Use materials such as oil booms, oil absorbent felt, and sand to prevent the spread of oil, especially into sewers, rivers, or soil.

🧿Step 2: Leak Treatment and Repair:

After ensuring the pressure in the pipeline has dropped to ambient or very low pressure, choose different repair methods based on the leak's size, shape, pipe material, and pressure rating:

1. Clamp Plugging (Clamp Plugging, Emergency Repair Joint): This is one of the most common and fastest methods, and oil-resistant emergency repair joints are one such method. They are suitable for holes, cracks, and other areas.

Operation: Clean the anti-corrosion coating and dirt from the surface of the leak to expose the metal. Wrap the leak with a split or sleeve-type emergency repair joint, secure it with high-strength bolts, and insert sealing material (such as an oil-resistant rubber gasket) between the emergency repair joint and the pipe to create a new seal.

2. Pipeline Replacement:

If the pipeline is severely corroded or the damage is extensive, the damaged section will be cut and replaced with a new, intact section. This is the most thorough repair method, but also the most labor-intensive and time-consuming.

3. Pipeline Sealing Adhesive:

For temporary, very small leaks, special sealing adhesives (such as metal cement and sealing tape) are sometimes used to temporarily seal leaks, buying time for subsequent permanent repairs. However, they should not be used as a permanent repair solution for the main pipeline.

Benefits of Using Oil-Resistant Repair clamps

Oil-resistant repair joints (also known as leak-sealing fixtures or repair clamps) are one of the most widely used and comprehensive methods for emergency repairs of oil and gas pipelines. Their benefits are primarily reflected in the following aspects:

1. High Safety
No Hot Work: No welding is required, fundamentally eliminating the significant safety risks associated with hot work in flammable and explosive environments. This is crucial for repairs of gasoline pipelines, which are highly volatile and have low explosion limits.
Pressure Sealing: Although it requires low pressure, it can be installed without completely draining the pipeline and maintaining a slight positive pressure, reducing oil release and environmental pollution. 2. Fast and Efficient Repairs
Easy to Operate: Typically constructed of two halves or a sleeve, fastened with high-strength bolts, installation is quick. Preparation and installation typically take hours, significantly faster than shutting down, purging, welding, and testing, which typically take days.
Greatly Reduced Production Downtime: Rapid repairs mean the pipeline can resume oil flow as quickly as possible. For the continuously operating petrochemical industry, every hour of downtime avoided can avoid significant economic losses.
3. Reliable Sealing and High Strength
Integral Pressure-Bearing Capacity: Modern repair joints are typically designed as a monolithic structure. This not only seals leaks, but also distributes the hoop stress within the pipeline, restoring or even enhancing the original pipeline's pressure-bearing capacity.
Excellent Sealing: The built-in, specialized oil-resistant rubber gasket (such as NBR or HNBR) resists dissolution and corrosion from gasoline and diesel, creating a long-term, stable seal under bolt preload. 4. Wide Applicability
Various Damage Types: Effectively repairs holes, cracks, corrosion thinning, thread leaks, and other defects.
Various Working Conditions: Suitable for a variety of pipe fittings, including straight pipes, elbows, tees, and flanges. Baoshuo offers specialized designs. We offer straight pipe repair fittings, elbow repair fittings, tee repair fittings, and flange repair fittings.
Various Pipe Materials: Suitable for pipes made of various materials, including steel and cast iron.
5. Economical
While the cost of a single repair fitting may be higher, considering its advantages, such as reduced safety risks, shorter production downtime, and reduced labor and equipment investment, the overall repair cost is often far lower than traditional welding or pipe replacement.

The following is a Baoshuo brand oil-resistant repair fitting, made of nitrile rubber (NBR). You can also choose from stainless steel oil-resistant repair joints, 3.0 MPa (30 kg pressure) oil-resistant repair joints, and 15.0 MPa (150 kg pressure) oil-resistant repair joints, depending on the specific situation.

Summary

When leaks occur in gasoline and diesel main pipelines, using oil-resistant repair joints is the preferred method for modern pipeline repair operations. They perfectly meet the core repair requirements of safety, speed, reliability, and economy, minimizing risks, minimizing losses, and protecting the environment. They are key technologies and equipment for ensuring the safe and unobstructed operation of energy arteries.

Important Note: All pipeline repair operations must be performed by professional, trained maintenance teams in accordance with strict operating procedures. Unauthorized personnel are strictly prohibited from operating them.