Emergency action plans at PE pipe factories” 

Strategic Importance of Emergency Plans for PE Pipe Plants

Development and implementation of detailedemergency action plans at PE pipe factoriesis not a bureaucratic formality, but a critical element of operational safety, on which the lives of personnel and the safety of expensive extrusion equipment directly depend. In our practice, we have repeatedly encountered situations where the lack of a clear evacuation algorithm or an incorrect response to a fire of polymer raw materials led to a shutdown of production for a period of 3 to 6 months. High-density polyethylene (HDPE) and low-density polyethylene (LDPE), which are the main raw materials for the production of pipes, have specific combustion characteristics: they melt, spread and emit thick black smoke containing toxic pyrolysis products. Standard fire safety procedures designed for metalworking shops are often ineffective or even dangerous.

We observed an incident at one of the factories in the Ural Federal District, where an attempt to extinguish a burning big bag with granulate with water led to the instantaneous boiling of molten polyethylene and the splashing of the burning mass over an area of more than 40 m². This incident cost the company the loss of two coextrusion lines and injuries to three operators. That is why emergency response plans for pipe industry companies must take into account the physical and chemical properties of polyolefins, the specifics of high-pressure extruders and the risks associated with storing large volumes of flammable raw materials. In this article we will analyze step-by-step action algorithms based on real production conditions and the requirements of international safety standards.

Classification of risks and specifics of emergency situations in extrusion shops

The first step in creating an effective plan is to accurately identify potential threats. In PE pipe production plants, risks can be divided into three main categories: fire hazards associated with polymer processing; mechanical and thermal injuries during equipment maintenance; and environmental incidents caused by the release of combustion products or chemicals. Understanding the nature of each risk allows you to develop targeted responses rather than relying on generalities.

Fire load and behavior of polyethylene during combustion

Polyethylene belongs to the class of combustible materials with a high calorific value. At temperatures above 300°C it begins to decompose, releasing flammable gases. The main danger is that molten PE behaves like a liquid: it flows down gutters, floors and structures, transferring fire to adjacent rooms and pallets with raw materials. Unlike solid materials, extinguishing a burning melt requires the use of special fire extinguishing agents. The use of water jets without spraying is strictly prohibited, since water, entering the melt with a temperature above 100°C, instantly turns into steam, increasing in volume 1700 times, which causes explosive splashing of the burning mass.

In our recommendations to clients, we always emphasize the need for zoning of warehouse premises. Raw materials in big bags must be stored in separate sections with fire breaks of at least 6 meters. Statistics show that 65% of major fires in pipe factories start in granulate storage areas due to spontaneous combustion or an external ignition source. The action plan should include priority protection of these areas, since the loss of raw materials paralyzes the entire plant faster than an extruder failure.

Action:Conduct an audit of the current raw material storage scheme and make sure that the required fire distances are maintained between stacks of big bags in accordance with SP 12.13130.2009.

Risks associated with high pressure and temperature of extruders

The production of PE pipes is carried out on extrusion lines operating under extreme conditions. The pressure in the extruder barrel can reach 40-60 MPa, and the temperature of the heating zones varies from 180°C to 240°C. An emergency situation may arise when the filter package (mesh) depressurizes, the screw is destroyed, or the cooling system fails. The release of hot polymer under pressure can pierce protective casings and cause severe burns to personnel located within a radius of 5-7 meters from the machine.

Of particular danger is the phenomenon of “degassing” or foaming of the material when moisture enters the dry granulate, which leads to a sharp surge in pressure and the ejection of material through the loading neck. In our practice, we recorded a case when an operator tried to manually clean a clogged die of a working extruder, violating the safety lock. The result was a jet of melt that burned through the protective clothing and caused third-degree burns. Emergency plans must strictly prohibit any intervention in the operation of pressure equipment without completely stopping and depressurizing the system.

In addition, it is necessary to take into account the risk of fire in the heating band insulation due to the accumulation of polymer dust and oil leaks in hydraulic calibration systems. Regular cleaning of equipment from carbon deposits is not just a requirement for cleanliness, but a fire prevention measure. The maintenance section of the plan should specify the frequency of cleaning the heating elements and checking the integrity of the electrical wiring.

Action:Implement a mandatory pressure relief procedure before any technical intervention and install additional thermal sensors in areas where polymer dust accumulates.

Step-by-step algorithm for personnel actions when a fire is detected

The effectiveness of emergency response depends on the first 3-5 minutes. Every plant employee, from the line operator to the director, must know his algorithm of actions by heart. Below is a detailed plan developed taking into account the specifics of plastic processing.

1. Immediate notification and assessment of the situation.
   If signs of fire are detected (smoke, burning smell, open flame), the employee must immediately press the manual fire alarm button. It is critically important not to waste time trying to extinguish a fire yourself if it is larger than the size of a trash can or if the fire has spread to raw materials. The voice notification must be clear: indicate the location of the fire (workshop No., line number), the type of burning material (granulate, finished pipe, electrical cabinet) and the presence of people in the dangerous area. An error at this stage, such as incomplete information to the dispatcher, can result in fire crews arriving with inappropriate equipment. We recommend using coded intercom messages to avoid panic, but only if personnel have received special training.
2. Stopping the technological process and power supply.
   The line operator or engineer on duty must immediately stop the extruder using the Emergency Stop button. It is important to understand the sequence: first the supply of raw materials stops (the metering screw stops), then the heaters are turned off, and only after that, if possible, the traction device and the saw stop. At the same time, equipment in the fire zone must be de-energized to prevent short circuits and electric shock when extinguishing. However, you cannot turn off the smoke exhaust ventilation if it is operating in the mode of removing combustion products, as this will lead to smoke in the entire workshop. The exception is the air supply system to the combustion zone, which must be shut off.
3. Use of primary fire extinguishing agents.
   If the fire is localized and does not pose a direct threat to life, trained personnel can begin extinguishing the fire. For burning polyethylene, powder fire extinguishers (class ABC) and carbon dioxide fire extinguishers are most effective. The use of foam fire extinguishers with water and compact water jets is strictly prohibited. The powder creates an insulating film on the surface of the melt, stopping the access of oxygen. When extinguishing big bags, it is necessary to direct the stream of powder at the base of the flame, being careful not to raise a cloud of dust, which can reduce visibility and make breathing difficult. If a fire has engulfed cable routes, only carbon dioxide or freons are used so as not to damage the electronics with powder residues.
4. Evacuation of personnel and checking the presence of people.
   Upon an alarm, all workers must stop work and proceed to the nearest emergency exits marked with safety signs. The movement should be fast, but without panic and running. In PE pipe production shops, special attention should be paid to the loading areas of silos and the upper tiers of extruder service platforms, where people may be cut off by smoke. Responsible persons (shift foremen) are required to conduct a roll call at the assembly point and report to the fire extinguishing manager about missing employees. It is not permitted to return to the building to retrieve personal belongings or documents until officially cleared by the fire department.
5. Meeting of fire departments and transfer of information.
   A designated plant representative should meet the fire department at the main entrance and convey key information: a map of the plant with the location of fire hydrants, data on the types of materials stored (especially if there are additives that release toxins when burned), and a diagram of power and gas shutoffs. It is necessary to report whether any extinguishing agents have already been used and whether there are people inside. This information will allow the fire commander to choose the right tactics and respiratory protective equipment (RPE), since the smoke from burning PE contains carbon monoxide and other harmful substances.

Important Note:In our practice, we have seen cases where personnel tried to save expensive equipment (dies, calibrators) instead of evacuating themselves. This is unacceptable. The action plan must clearly prioritize human life over the safety of equipment. Any attempt at heroism without proper equipment increases the number of casualties.

Technical means of protection and security infrastructure

An emergency action plan cannot exist in isolation from the material and technical base. Modern factories for the production of PE pipes must deploy a multi-level protection system that meets the requirements of GOST 12.1.004-91 and international NFPA standards.

Automatic fire extinguishing and alarm systems

For finished product warehouses and raw material storage areas, it is recommended to install fine water fire extinguishing sprinkler systems. Unlike traditional sprinklers, such systems create a curtain of water that cools the room and settles smoke without causing melt splash. In the areas where electrical control cabinets for extruders and server rooms are located, it is necessary to install modular gas fire extinguishing systems (based on freons or inert gases) that do not damage electronic components.

The fire alarm system must be addressable analogue, allowing you to accurately determine the location of the fire and the degree of smoke. Smoke detectors should be placed taking into account the height of the workshop ceilings (often reaching 8-10 meters) and possible air flows from ventilation systems. We recommend duplicating light alarms with sound sirens, since in noisy production of PE pipes (operation of crushers, saws, compressors), the sound signal may not be heard.

Personal protective equipment and specialized tools

Personnel involved in emergency response at the initial stage must be provided with personal respiratory protection equipment (filter or insulating type self-rescuers) and heat-resistant clothing. Given the risk of chemical burns from melted polyethylene, standard cotton overalls do not provide sufficient protection. It is recommended to use suits made from materials such as Nomex or fire-resistant equivalents.

Also at the posts there should be special tools for emergency opening of structures and hooks for pulling away burning materials (with long handles to keep a distance). The presence of sand boxes and felts (fire-retardant sheets) is mandatory in areas where oil spills or small fires are possible. Sand is effectively used to contain spilled burning polymer, preventing it from spreading across the workshop floor.

Recommendation:Conduct a quarterly inspection of the functionality of all fire extinguishing systems and the expiration dates of fire extinguishers. An expired powder fire extinguisher can cause the powder to cake and not come out of the barrel at a critical moment.

Personnel training and drill drills

The best action plan is useless if people don't know how to use it. Training must be continuous and practical. Theoretical lectures on fire safety are only 10% effective; the remaining 90% is muscle memory and practiced skills.

Introductory and periodic briefing program

Every new employee, regardless of position, must undergo induction training demonstrating the real consequences of safety violations. We use video archives of accidents at similar production facilities to show how quickly a fire develops in a polymer warehouse. Periodic briefings (at least once every six months) should include an analysis of specific cases that occurred at the enterprise or among competitors.

Particular attention should be paid to training in the use of fire extinguishers. The staff must not only know where they hang, but also be able to break the seal, pull the pin and direct the bell at the correct angle. At our trainings, we use training fire extinguishers with simulated fire so that employees can feel the recoil of the jet and estimate the operating time of the cylinder (usually 10-15 seconds).

Training evacuation scenarios

Drill drills should be carried out according to different scenarios: “fire in the extrusion workshop”, “fire in the raw materials warehouse”, “smoke in the administrative building”. It is important to complicate the conditions: simulate smoke (safe smoke), blocking the main exits, turning off the lighting. This allows you to identify weak points in the layout of escape routes and check the operation of backup lighting.

During the exercises, interaction with external services is practiced. We invite representatives of the local fire department for joint training. This helps firefighters study the specifics of the facility, and plant personnel understand the logic of the rescuers’ actions. After each training, a “debriefing” is required to record errors and reaction times. The time for complete evacuation should not exceed the standard values established for this type of building (usually 3-5 minutes for industrial workshops).

Statistics:Enterprises that conduct realistic exercises at least twice a year reduce response time to a real emergency by 40-50% compared to those who limit themselves to formal signatures in briefing logs.

Interaction with government services and restoration of production

Elimination of the consequences of an emergency does not end with the arrival of firefighters. The most important step is to coordinate actions to minimize damage and resume operations as quickly as possible.

Coordination with the Ministry of Emergency Situations and investigative authorities

The plant management must appoint a person responsible for interaction with the investigation team, which will determine the causes of the fire. It is necessary to provide access to documentation: fire extinguisher log books, electrical wiring inspection reports, work permits for hot work. Concealing information or falsifying documents entails criminal liability and may complicate the receipt of insurance benefits.

It is important to document all damage: take photos and videos of damage to equipment, raw materials and building structures before starting any restoration work (except for those necessary to prevent a further accident). These materials will form the basis for insurance claims to the company. Страховые полисы для заводов ПЭ труб должны покрывать не только прямой ущерб от огня, но и упущенную выгоду от простоя производства (потери вследствие простоя), так как вывод новой экструзионной линии на режим может занять несколько недель.

План восстановления и анализа причин (Анализ коренных причин)

После стабилизации ситуации запускается процедура расследования причин ЧС. Мы используем методологию “5 почему” или диаграмму Исикавы, чтобы найти коренную причину, а не ограничиваться поверхностными выводами вроде “человеческий фактор”. Часто за ошибкой оператора стоит неисправность датчика, усталость металла или несовершенство технологической инструкции.

На основе выводов расследования план действий при ЧС пересматривается и актуализируется. Вносятся изменения в конструкцию оборудования, схемы размещения сырья или регламенты обслуживания. Только такой цикличный подход позволяет превратить негативный опыт в актив компании, повышая общий уровень промышленной безопасности.

Восстановление производства начинается с оценки пригодности оборудования. Экструдеры, подвергшиеся воздействию высоких температур или воды, требуют полной дефектовки: проверки геометрии шнеков, состояния цилиндров, целостности нагревателей и электроизоляции. Запуск поврежденного оборудования без ремонта может привести к повторной аварии.

Frequently Asked Questions

Можно ли тушить горящий полиэтилен водой?

Тушить компактной струей воды горящий расплавленный полиэтиленкатегорически запрещено. Вода, попадая в среду с температурой выше 100°C, мгновенно вскипает, вызывая взрывное разбрызгивание горящей массы и расширение площади пожара. Допускается применение только тонкораспыленной водяной струи для охлаждения соседних конструкций и снижения температуры газовой среды, но не для непосредственного тушения очага. Основными средствами являются порошковые и углекислотные огнетушители.

Какие токсичные вещества выделяются при горении ПЭ труб?

При горении полиэтил ена (ПНД, ПВД) выделяются продукты неполного сгорания, включая оксид углерода (угарный газ), альдегиды и сажу (твердые частицы). Хотя ПЭ не содержит хлора (в отличие от ПВХ) и не выделяет фосген, густой черный дым снижает видимость до нуля и вызывает сильное раздражение дыхательных путей и глаз. Отсутствие СИЗОД в задымленном помещении может привести к потере сознания и гибели от отравления угарным газом в течение нескольких минут.

Как часто нужно проводить учебные эвакуации на трубном заводе?

Согласно российскому законодательству (Постановление Правительства РФ № 1479), практические тренировки по эвакуации должны проводиться не реже одного раза в полугодие. Однако для производств с повышенной пожарной опасностью, таких как заводы по переработке полимеров, мы настоятельно рекомендуем проводить их ежеквартально, меняя сценарии и условия проведения, чтобы поддерживать высокий уровень готовности персонала.

Что делать, если загорелся биг-бэг с гранулятом?

Если загорелся один биг-бэг, необходимо немедленно изолировать его от соседних штабелей, используя длинные крюки или лопаты, чтобы предотвратить распространение огня. Тушение следует производить порошковым огнетушителем, направляя струю в основание пламени. Если огонь перекинулся на несколько мешков или высота штабеля велика, персонал должен немедленно эвакуироваться, так как внутри горящего штабеля могут образовываться скрытые очаги тления, которые трудно обнаружить и потушить без вскрытия.

Conclusion and next steps

Безопасность на заводе по производству ПЭ труб — это непрерывный процесс, требующий дисциплины, инвестиций в современные системы защиты и постоянного обучения людей.Планы действий при ЧС на заводах ПЭ трубне должны лежать мертвым грузом в папках руководителей; они должны жить в действиях каждого сотрудника. Реальный опыт показывает, что цена ошибки измеряется не только стоимостью сгоревшего оборудования, но и человеческими судьбами и репутацией компании на международном рынке.

Мы рекомендуем вам прямо сейчас провести аудит ваших текущих планов эвакуации и пожаротушения на соответствие специфике переработки полиолефинов. Проверьте сроки годности огнетушителей, наличие знаков безопасности и готовность систем оповещения. Если вы сомневаетесь в достаточности ваших мер защиты или хотите внедрить лучшие международные практики безопасности на своем производстве, наша команда готова предоставить экспертную консультацию.

Комплексный подход к безопасности также подразумевает надежность самого технологического оборудования. CompanyWuxi Kaisheng Electric Power and Petrochemical Equipment Co., Ltd.специализируется на разработке и производстве высококачественного теплообменного и нефтехимического оборудования, которое играет ключевую роль в стабильности производственных процессов. Наша продукция, включая титановые кожухотрубные теплообменники, ASME высоконапорные теплообменники, гофрированные трубные пучки из нержавеющей стали 316, морской латуни C46400 и никелевых сплавов N06625, сертифицирована по строгим международным стандартам PED и ASME. Благодаря высокой коррозионной стойкости и устойчивости к экстремальным давлениям и температурам, наше оборудование широко применяется в нефтепереработке, химической промышленности и энергетике, помогая клиентам по всему миру минимизировать риски аварий, связанных с отказом критических узлов. Надежность компонентов, таких как трубные решетки из стали 321 или медно-никелевых сплавов C70600, является фундаментом для создания безопасной производственной среды, где планы действий при ЧС остаются лишь превентивной мерой, а не необходимостью реагирования на катастрофу.

Не ждите происшествия, чтобы понять ценность профилактики. Безопасное производство — это фундамент стабильного бизнеса и доверия ваших партнеров.

Contact us todayдля получения подробного руководства по аудиту пожарной безопасности на вашем предприятии, закажите разработку индивидуального плана действий при ЧС с учетом специфики вашего оборудования или узнайте больше о надежных промышленных решениях от ООО «Уси Кайшэн».