Special places refer to those places with extremely high safety requirements, which may lead to serious consequences in the event of a fire, such as nuclear power plants, petrochemical enterprises, large data centers, subway tunnels, etc. The cable and pipeline systems in these places are one of the main ways for fire to spread. Therefore, effective fireproof plugging of cables and pipelines in these places is a key measure to ensure the safety of the places.
In my country, many national standards and specifications have made requirements for fireproof plugging and fireproof plugging materials, such as “Building Fire Protection Design Code” (GB50016), “Cable Fireproof Plug Application Technical Specifications” (GB/T 19687), Fireproof Plug Materials (GB23864), etc.
In special places, the problems faced by cable and pipeline penetration plugging are also more prominent. On the one hand, the large number of cables and pipelines and their complex distribution bring certain difficulties to the plugging work; on the other hand, the environmental conditions in special places are relatively harsh, such as high temperature, high pressure, corrosive gases, etc. These factors will affect the performance and construction quality of the plugging materials.
Difficulties in plugging cables and pipelines in special places
(I) High temperature and high pressure environment
Take the petrochemical industry as an example. Many production processes involve high temperature and high pressure reactions. In such an environment, traditional fireproof plugging materials may deform and melt due to insufficient high temperature resistance, resulting in plugging failure. For example, ordinary fireproof mud will gradually lose its viscosity and structural strength under long-term high temperature baking, and cannot effectively block the spread of flames. At the same time, the high pressure environment may also squeeze the plugging material and destroy its integrity.
(II) Working in narrow spaces
The cable shafts, pipeline shafts and other parts of high-rise buildings and underground rail transit are often narrow. This brings great difficulties to the construction of fireproof plugging. It is difficult for construction personnel to lay, install and compact materials in a limited space, and it is easy to cause loose plugging. Moreover, narrow spaces are not conducive to ventilation and heat dissipation. When a fire occurs, high temperature accumulation may accelerate the damage of the plugging material.
(III) Dense intersection of multiple pipelines
In special places, cables and various pipelines (such as water pipes, oil pipes, and gas pipes) are often densely distributed and cross-distributed. Different pipelines have different materials, diameters, and operating conditions, which makes the design and construction of fireproof plugging extremely complicated. For example, at the intersection of cables and oil pipes, it is necessary to consider fire prevention and prevent oil leakage from corroding the plugging materials, while ensuring that the normal operation and maintenance of cables and oil pipes are not affected.
(IV) Corrosion by corrosive gases
There are a large number of corrosive gases in petrochemical parks and some industrial plants, such as hydrogen sulfide and sulfur dioxide. These gases can corrode fireproof plugging materials, reducing their fireproof performance and service life. For example, fireproof boards, fireproof mud, fireproof bags, etc. that are exposed to hydrogen sulfide environments for a long time may experience surface corrosion and reduced strength, and thus cannot play the proper barrier role in fire.
Disadvantages of traditional fireproof plugging
1. The gaps between bundled cables cannot be completely sealed.
Traditional fireproof plugging materials, such as fireproof mud, fireproof boards, fireproof coatings, etc., cannot completely seal the gaps between bundled cables, which easily leaves fire hazards. In addition, as time goes by, the plugging materials will age, resulting in reduced plugging effect.
2. Each performance is single, and it is difficult to meet multiple requirements at the same time.
Traditional plugging materials have single performance, good fireproof performance but poor sealing performance, good sealing performance is greatly affected by temperature, and poor vibration resistance is less affected by temperature, etc., which makes it difficult to meet the fireproof, waterproof, dustproof, shockproof, corrosion-resistant, and rodent-proof requirements of special places at the same time.
3. Later transformation is difficult, and the workload of adding and reducing cables is large.
Regardless of which traditional plugging method is used, later transformation is difficult, and the workload of adding and reducing cables is large. In actual applications, with the development and changes of business, the increase and decrease of cables is common. This shortcoming of traditional plugging materials has brought great inconvenience to actual use.
New tool for fireproof plugging of cable and pipeline penetrations
In the fireproof plugging of cable and pipeline penetrations in special places, it is crucial to choose the right plugging material. It is necessary to comprehensively consider the fireproof performance to ensure that the fire can be effectively prevented from spreading when a fire occurs; high temperature resistance to adapt to the high temperature environment that may occur; corrosion resistance to cope with various complex chemical environments; at the same time, construction convenience is also an important factor, so as to efficiently complete the plugging work under different construction conditions.
There are many commonly used plugging materials, but their shortcomings are also obvious. For example: fireproof mud has good plasticity and can fill gaps of various shapes, but it is difficult to completely seal the gaps of bundled cables. Fireproof board can provide a certain mechanical strength, but its installation is relatively complicated. Fireproof bag is easy to construct, but the sealing performance is poor.
TST CABLES modular cable and pipe penetration sealing system has many advantages. First of all, the high safety performance makes it excellent in fireproof, waterproof, dustproof, vibration-proof and other aspects, providing reliable protection for cables and pipes in special places. It has strong weather resistance and uses high-performance materials such as EPDM rubber and 304/316 stainless steel, which can adapt to various complex climate environments and chemical corrosion environments. The characteristics of easy installation and maintenance reduce construction and operation costs. In terms of environmental performance, the use of non-toxic and halogen-free materials complies with the EU RoHS Directive and its revised directives, which is conducive to protecting the environment. At the same time, the system can also optimize the operating environment, such as reducing noise and improving energy efficiency. As a domestic product, it has cost advantages and can replace imported products, providing high-quality solutions for fire blocking in special places in my country.
As a domestic brand that focuses on providing modular cable and pipe penetration and sealing systems for users in various industries, TST CABLES Technology can provide all solutions for cable and pipe penetration for customers in various industries around the world. It has passed the certification of multinational classification societies and provided more than 3,000 sets of domestically produced cable and pipe penetration and sealing solutions for well-known companies such as 1,000+ listed groups, state-owned enterprises, and central enterprises around the world. Its high-level fire protection and sealing performance can meet the safety needs of ships and their charging facilities in different environments. In the future, TST CABLES will rely on high-quality products and considerate and comprehensive services to ensure fire safety in special industries.
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