In the petrochemical industry, safety protection in high-risk areas is the key to ensuring production safety and personnel life. The storage, transportation and production equipment of flammable and explosive media often face extreme risks such as fire and explosion. The penetration sealing system is the core component of pipelines and cables passing through firewalls and explosion-proof walls. Its performance is directly related to the effectiveness of regional safety barriers. With its excellent fire resistance, explosion resistance, sealing and environmental adaptability, TST seal penetration sealing module provides innovative solutions with optimized design for high-risk areas in petrochemicals.

01Special challenges and protection needs in high-risk areas in petrochemicals

In petrochemical plants, oil storage tanks, reaction devices, pipeline systems and other facilities are concentrated, and the media are mostly flammable and explosive gases or liquids. Once a leak occurs, it is very easy to cause fire and explosion when exposed to open flames or high temperatures. Traditional penetration sealing materials (such as stuffing boxes and fireproof mud) are prone to aging and failure in high temperature and corrosive environments, resulting in sealing failure, medium penetration, and even becoming a channel for explosion propagation. Therefore, high-risk areas have strict requirements for penetration sealing systems: not only must they have a high fire resistance level, but they must also withstand explosion impact, long-term environmental corrosion, and ensure electrical safety and medium isolation.

02 Technical advantages of TST seal penetration sealing system
TST seal penetration sealing module is deeply optimized for petrochemical scenarios, and its core features provide comprehensive protection for high-risk areas:
Multi-level fireproof barriers, building a solid safety bottom line

The system meets the FTP rule A-0, A-60 fire resistance level, complies with the EN45545-2 standard HL3 hazard level, and passes the GB23864 2h/3h fireproof certification and CUTR 2h test. When a fire occurs, the module can continue to maintain structural integrity in a high temperature environment, preventing flames and toxic smoke from penetrating, and buying valuable time for personnel evacuation and emergency response.

Double explosion-proof certification to resist explosion shock
According to the IEC 60079 standard, the TST seal penetration sealing module reaches the Ex EПC Gb and ExEⅡCGc explosion-proof grades and can be used in flammable gas environments. Its unique structural design can withstand 1.8MPa explosion shock, effectively prevent the propagation of explosion shock waves, and avoid chain explosion accidents. This feature is particularly critical in the isolation of oil tank areas and petrochemical units.
High-pressure sealing performance to prevent medium penetration

For the high-pressure characteristics of petrochemical media, the TST seal penetration sealing system can achieve watertight and airtight sealing at a pressure level of 0.3~0.5MPa. Whether it is liquid hydrocarbons or gaseous media, zero leakage can be achieved through the sealing structure, ensuring the sealing integrity of the pipeline penetration and reducing environmental risks.

Full environmental adaptability, long-term and stable operation

Using EPDM low-smoke halogen-free material, it can withstand extreme temperatures from -52℃ to 90℃, and has acid, alkali, salt and oil corrosion resistance. Combined with dynamic variable diameter technology and reserved expansion space design, the system can automatically compensate for the thermal expansion and contraction of the pipeline, and maintain a service life of 30 years without subsequent maintenance. This feature greatly reduces the maintenance cost and replacement frequency in high temperature and corrosive environments.

Electromagnetic compatibility and environmental safety
According to the GB/T12190-2006 standard, 14kHz~18GHz broadband electromagnetic shielding efficiency (42~63dB) is achieved to ensure the stability of the electrical system signal. At the same time, the product complies with the EU RoHS 2.0 and IEC61249-2-21 non-toxic and halogen-free standards to avoid the release of harmful substances in the event of a fire, taking into account both environmental protection and safety.

03 Application practice of fireproof plugging module in typical scenarios
The optimized design of TST seal penetration sealing system in high-risk areas of petrochemicals has been implemented in multiple scenarios, significantly improving safety performance:

1. Explosion-proof wall penetration sealing in oil tank area

In a large oil storage tank project, the explosion-proof wall needs to penetrate the fire pipeline and monitoring cable. The TST seal fireproof plugging module has an Ex EⅡCGc explosion-proof rating and 1.8MPa explosion-proof performance, ensuring that the explosion impact will not spread through the penetration point; its IP68 protection rating and corrosion-resistant coating effectively resist oil vapor corrosion and rainwater penetration. Dynamic variable diameter technology supports later pipeline expansion and avoids secondary construction risks.

2. Cable tray sealing in the chemical plant unit area

In the vinyl chloride production unit area, the cable tray must take into account both fire resistance and signal transmission safety when penetrating the firewall. The A-60 fire resistance rating of the TST seal penetration sealing system ensures smooth power communication during fire, the electromagnetic shielding performance prevents electrical interference, and the halogen-free material reduces the secondary hazards of fire. The reserved expansion space design solves the problem of thermal displacement of high-temperature pipelines and achieves long-term stable sealing.

3. Pipeline penetration protection in the liquefied gas tank area

The pipeline penetration seal of the liquefied gas storage tank needs to deal with high-pressure media and explosion risks. The TST seal fireproof plugging module has passed the 0.5MPa airtight seal and Ex EПC Gb explosion-proof certification, combined with the automatic compensation thermal expansion and contraction structure, to ensure that the seal does not fail in low-temperature storage and high-temperature environments in summer, greatly reducing the risk of leakage.

04. Benchmark project: The actual results of the TST seal solution
The TST seal cable and pipeline penetration sealing system has demonstrated outstanding results in benchmark projects in the fields of refining, oil fields, and petrochemicals with its modular design, efficient sealing, and multi-scenario adaptability.

Case 1
ZHY Refining Phase II Project

The TST seal modular penetration sealing system is applied to the pipeline penetration of the entire plant area of ​​the ZHY Refining Phase II project. Its sealing and fireproof performance effectively solves the pain points of traditional solutions. The project saved 35% of labor costs during implementation, and the installation cycle was shortened, bringing the production plan forward by two weeks. Customers commented: “The modular design greatly improves efficiency and creates considerable economic benefits for the company.”

Case 2
CEPI platform project in an oil field

For the complex environment of the CEPI platform in an oil field, the TST seal fireproof plugging module is applied to the tank area (to prevent oil and gas leakage and explosion), the control room wall (to isolate fire and electromagnetic interference), and the offshore platform (to resist salt spray corrosion and wave impact), ensuring the long-term stable operation of the tank, control system and cable, and improving the safety and reliability of the platform.

Case 1
New petrochemical project of an energy company in Hebei

The TST seal penetration sealing system builds a “safety wall” for the cable penetration of the cabinet room and instrument control room of an energy company in Hebei, effectively isolating explosion shock waves, fire, smoke, toxic gases, radiation, chemicals, water, electromagnetic radiation and rodents, comprehensively ensuring the safety of personnel and equipment, and building a multiple protection barrier.

In high-risk areas of petrochemicals, the optimized design of explosion-proof penetration sealing systems is the core link in building safety barriers. The TST seal penetration sealing system provides a reliable solution for the industry with multi-dimensional technical breakthroughs such as fire resistance, explosion protection, sealing, and environmental adaptability. In the future, with the integration of intelligent and standardized technologies, its application will further reduce regional risks and help the petrochemical industry develop in a safer and more sustainable direction.