Gas Detection in Water and Wastewater Treatment

Su sanitasyonu ve atık su yönetiminde en sık karşılaşılan gazlar methane (CH4), ammonia (NH3), chlorine (Cl2), ozone (O3), carbon dioxide (CO2) and is nitrogen (N2). Many serious gas accidents occur around the world every year. Therefore, several water purification gas detection units It is highly recommended to install and use .

Water PURIFICATION gas detection

4 gas detectors

This is primary It is a 4 gas detector and in wastewater treatment plants sanitation for It is the most widely used device . At the same time methane ( CH4 ), hydrogen sulfide (H2S), carbon monoxide (CO) and lack of oxygen (O2) follows. It is also recommended during training for water and wastewater treatment workers.

Ammonia detection

When drying waste sludge (inversion and destocking) release of highly toxic concentrations of ammonia (NH3) and hydrogen sulfide (H2S) gas may occur . For this purpose, for the health and safety of employees It is essential to install NH3 and/or H2S gas detection devices.

Chlorine and ozone detection

Her water purification Tertiary treatment consists of removing residual phosphorus, chemical or biological micropollutants from treated water. Purification techniques can be physical (sieving, microfiltration) or chemical, usually chlorine (Cl2) or ozone via (O3).

Water and wastewater treatment respiratory protection

Emergency escape breathing apparatus – EEBD –

Escape breathing apparatus, open air emergency evacuation It is a special respiratory protection device . This is a half mask or hood equipped with an ABEK-specific filter. It is designed to protect against organic, inorganic (except carbon monoxide), acidic substances, ammonia and sulfur compounds with an autonomy of 15 minutes (evacuation time).

Self-saving mask -SCSR

self-saving mask, especially Designed for emergency evacuation in unbreathable environments It is a respiratory protective equipment . It is recommended during confined space training for any wastewater treatment workers as it is the safest emergency escape device.

Limited Space Training

Any wastewater treatment worker entering a potentially confined space is required to receive confined space training, depending on the level of work.

With local education (in France CATEC® training, indoor certification in the UK or US OSHA such as indoor training), students learn more about safe working practices, appropriate control measurements, and what the regulations say regarding safety in the workplace. After receiving training, water treatment workers become aware of confined space hazards and understand the importance of implementing appropriate control measures and necessary emergency procedures.

Our choice of gas detectors for wastewater treatment

Our gas detectors are ideal for measuring oxygen levels and monitoring concentration levels of methane, hydrogen sulfide, chlorine, ozone and carbon monoxide, which are toxic gases found in sewage and wastewater treatment environments.

Escape masks and self-rescue masks for water purification and sanitation

Our leak masks and self-rescuers are designed for use in tight spaces and emergency evacuations. They guarantee respiratory safety for those working in water treatment and sanitation environments.

Lone Worker Protection PASS

Alone an employee's status is often misunderstood. Despite this, lone workers represent 10% of workers today, some of whom are affected for a short or one-off period in their working lives.

It is essential to be aware of the risks and take the necessary precautions to prevent accidents, discomfort or aggression towards lone workers. The location of the person concerned makes it possible to trigger and organize quick assistance.

Lone worker protection: Definition

What is a lone worker? Labor law describes the situation in a risky area, far from any help, with no possibility of being visible or audible. Therefore, a person who is cut off from all human contact is considered an isolated worker.

Lone Worker Protection And PASS – Personal Alert Safety System PASS – Personal Alert Safety System

Lone Worker Protection System why ? It is a set of measures taken to protect an isolated employee. The company has a legal obligation to provide a protective solution adapted to each hazard an employee may encounter when out of sight and hearing.

PASS is a warning device! It is an integral part of the Lone Worker Protection System.

Functioning of the Personal Alert Security System

PASS has two basic functions:

  • Warning : When PASS detects a fall, device removal, immobilization, or the presence of toxic gas, it emits a buzzer signal, either manually or automatically by the employee. The responsible third party receives the signal and sends help in case of an alert.
  • Geolocation : For devices with location functionality, send the employee's location using GPS coordinates or data transmitted by a passing flare. It can also detect the employee's last location via login badges.

Applications related to the Lone Worker Protection PASS

Some sectors of activity are more concerned about lone worker device use than others:

  • Cleaning companies: Cleaning staff in companies often have to be on their own outside of working hours in the morning or evening.
  • Construction: Workers, maintenance personnel, craftsmen, technicians and site managers may be alone in a risky environment.
  • Hotels: Night watchman, maintenance worker, handyman, gardener and cleaner; They are people who work alone in the hotel without being seen or heard by anyone.
  • Courier, salesman, road carrier, dismantling worker: Whether short or long distance, they are all left with a single means of communication.
  • Home care: The presence of the person receiving home care is not taken into account because they may not have the capacity to call for help.
  • Farmers, foresters, gardeners: In the wild, they are often out of reach of other people.

What are the risks of someone working alone?

Regardless of the field of activity, the lone worker is always likely to encounter multiple hazards. Therefore, good Personal Protective Equipment To choose, it is necessary to identify all risks before placing a person in hazardous working conditions.

A comprehensive medical risk analysis is required. Existing medical conditions may effectively prevent the employee from performing their duties under these conditions. Moreover, in order to anticipate future problems, it is important to consider that the stress associated with isolation or any other psychological manifestation can lead to a more or less crippling state: symptoms of anxiety or anguish, dizziness, epileptic seizures or even heart problems.

physical risk It includes both verbal and physical abuse. It is essential to consider all possible situations the employee may encounter. Without a witness around, an individual will feel freer to act as he wishes and may engage in practices that could harm the lone worker. Domestic helpers, delivery workers, home repair workers and sales representatives are most affected by such risks.

Some people enjoy working alone, while others experience anxiety, thoughtlessness, abandonment, and frustration. Personal Protective Equipment can help prevent drift, such as drinking alcohol, at work. Because, psychological risks A regular meeting with the employee is recommended to determine whether .

Choosing the right Lone Worker Protection PASS

When a lone working situation is observed, the employer employee safety It is necessary to take various precautions. Therefore the most suitable Lone worker Personal Alert Security System select .

  • Change the organization to reduce the time the employee is isolated.
  • Examine the potential physical, psychological, and medical risks an isolated employee may face (see previous paragraph).
  • Adapt equipment and workstation.
  • Adapt equipment and workstation.
  • “Dead man” device, can detect the employee's abnormal position, immobility, or loss of verticality, or both (“smart” detection).
  • SOS button It is confidential and allows the employee to raise the alarm quickly. Jewelers, banks and small shops are often equipped with them.
  • Fall detector, It is triggered when the employee falls. It quickly turns off the pre-alarm if it is a wrong move or if the employee can return to work.
  • Involve employees in Lone Worker Device selection. As key players in wearing this protective device, they can identify risks based on the work area. Additionally, this gives them significant recognition.
  • Provide training to relevant staff on risk prevention, lone workers, members of the CSE (Social and Economic Committee) and those responsible for calling for help on how to use PASS correctly.

Besides the above-mentioned functionalities, choosing a good PASS for safe stand-alone operation depends on the environment and its features.

Different mobile devices carried by a single employee:

  • Smartphone: The most commonly used PASS. A simple Bluetooth connection allows instant detection of the isolated person's location. Locating a device or phone can also alert an employee to distress.
  • GSM phone : Takes the form of a mobile phone or smartphone. It provides different emergency alerts by detecting danger or inactivity (dead man device for isolated workers). The GSM network allows sending signals from the SIM card to a relay antenna. Since the response is very approximate, an external GPS must be added to this geolocation system.
  • Connected clock: Sends alarm in case of workplace aggression
  • Radio : Radio solution to report and explain the situation
  • Lone Worker Protection App : By connecting to a GSM phone or connected watch, it ensures security by immobilizing the victim and informing him of his location.
  • DECT (Digital Enhanced Cordless Telecommunications) phone: same principle as cordless phone. It has special functions for the protection of a lone worker, transmits an alarm and adjusts the position of the worker.
  • ATEX Lone Worker Protection System : ATEX is a warning device specially designed for explosive areas.

Organizing the implementation of the Personal Alert Security System

In order to distribute aid quickly and effectively, it is essential to define some elements: target, elimination of doubt, geographical location, risks, means of access, persons responding, rescue.

The employer must check the correct use of the protection device throughout the year and ensure that it is in working order at all times.

Lone Worker Protection PASS Its installation is a must as soon as the situation of an isolated employee is identified. This system requires strict regulations for employee protection that the employer must comply with. He is obliged to protect his employees and must take the necessary precautions when he detects dangerous tasks within the company. While tracking the location of lone workers in real time may seem restrictive and misinterpreted, it allows help to be deployed quickly if an accident, attack, or illness occurs.

CO2 Hazards in Wineries and Breweries

CO2 risk in winemaking It is a great danger. Indeed, during alcoholic fermentation of wort 1 liter of wine will produce 44 liters of CO2 ! Other secondary compounds such as ethanol, glycerol, succinic acid and aromatic compounds (esters) will also be released. The danger of SO2 during the last step, sulfation, is another important risk…

Danger of CO2 in winemaking

wine making The greatest danger during the process (pressing, wort fermentation, devatting, tank cleaning) carbon dioxide It is related to the release. This dangerous gas is both suffocating and poisonous. CO2 (carbon dioxide) – carbonic gas Also known as – is a colorless and odorless gas that is heavier than air.

Decrease in oxygen content, It is not a reliable indicator of the presence of CO2 in the air. It is indeed possible to have a sufficient oxygen content of 19% and a dangerous – or lethal – CO2 concentration level of 10%. Monitoring this gas with a CO2 monitor, especially for wineries must . This device can be a portable gas detector (as personal protective equipment) or a fixed CO2 gas detector installed in wineries.

SO2 danger in sulfidation

Sulfur dioxide It is used in various stages of winemaking. Its antiseptic properties prevent the production of harmful microorganisms such as bacteria. Its presence in bottles prevents a second wine fermentation or vinegar production. Sulfur dioxide is also an antioxidant that prevents wine from taking on a cider taste.

Sulfur dioxide (SO2) It is most commonly used in the final step – bottling. During this process, many precautionary principles should be adopted. Sulfur dioxide, which is also corrosive and harmful, is above all an R23 and R24 toxic gas. This means it is toxic when inhaled and causes respiratory irritations and burn injuries.

CO2 danger in the brewery

One of the biggest dangers in the fermented beverage industry is entering a confined space filled with gases produced or accidentally released during brewing. Leaks can also release other harmful gases, such as ammonia used in cooling systems.

Risk of CO2 poisoning for brewery workers, It persists throughout the beer-making process. During fermentation, brewer's yeast converts sugar into alcohol and releases carbon dioxide. CO2 can cause discomfort even at low concentrations.

Before entering a tank or other enclosed space in breweries, the CO2 concentration should be measured using an appropriate CO2 monitor. This is the only reliable method of checking whether the CO2 concentration is truly at a safe level. CO2 must then be completely removed, especially in beer fermentation tank rooms.

Both portable and fixed CO2 detectors can be used for CO2 monitoring to improve brewery safety. In some countries, CO2 hazards in the beer industry are regulated by associations and official government bodies. Like OSHA brewery regulations that ensure the safety of breweries and brewery workers in the US.

Ethanol and alcoholic fermentation

Fermentation converts grape juice into ethanol (ethyl alcohol) is a natural chemical process where it is converted into . This process results from the reaction of the sugar in the grape pomace and the yeast found in the grape seed skin. Since ethanol (C2H6O) vapors can explode , they pose a potential explosion risk in case of leakage. Therefore, in order to reduce the dangers of ethanol, we must prevent the presence of this gas. Monitoring with a flammable gas detection device is highly recommended.

Winemaking and brewery gas detection equipment

For the winemaking and brewing industries, a portable CO2 detector It is essential to use one every day for this crash test is necessary. For larger structures, a CO2 fixed system should be installed along with any necessary warning devices…

Asbestos Respiratory Protection

Asbestos is a poisonous and dangerous dust

Asbestos It is not a gas, it is a tiny and extremely volatile It is a powder composed of filaments. Used in pipes, corrugated sheets, connectors, insulation, coating, flocking, etc. can be found. Any work done on these materials extremely thin hazardous materials has the possibility of spreading.

Once inhaled, fire-resistant fibers are deposited deep into the lungs (pulmonary alveoli). In case of chronic exposure, this dust serious respiratory diseases why could it be . larynx or lung with exposure to asbestos cancer risks The causality between them has been confirmed by IARC (International Agency for Research on Cancer). These diseases occur 10 to 20 years after chronic exposure to the substance.

The European Union now estimates that approximately 80% of occupational cancers are asbestos-related. In 2019, 70,000 people died due to exposure to this toxin.

Asbestos regulations and removal

The decree of 7 March 2013 concerns the selection, maintenance and verification of PPE used during operations that involve a risk of exposure for employees and freelancers. The decree, published in the Journal Officiel dated March 14, 2013, requires employers to provide respirators that protect against asbestos.

In the field of safety, when working with this fiber (asbestos removal works), three categories of dust in workplaces need to be taken into account, which means rating the tools to be applied in order to choose the right product.

  • Level 1 : Exposure to asbestos below occupational exposure limit value* (OELV)
  • Level 2 : Exposure to asbestos above OELV and below 60 times OELV
  • Level 3 : Asbestos exposure 250 times OELV or less

Current VLEP on asbestos exposure as of 1 July 2015 per liter Reduced from 100 fibers to 10 fibers.

The European Commission wants to expand the standard set by France throughout the EU. Many professionals planning to renovate nearly 3 million buildings by 2030 are likely to face health risks. New standards will provide equal protection in all countries

Asbestos respiratory protection equipment

Depending on the amount of particulate matter present in the air (and hence the degree of danger), there are three product categories specializing in asbestos masks as reusable respiratory protection:

  • Level 1 (lowest): Gas mask respirators or negative pressure masks. Profile 40 like half mask or Sari or Vision like full mask , With P3 asbestos filter  (filter against fine dust, aerosol, viruses or bacteria) equipped
  • Level 2 (middle): Proflow 2SC Asbestos One or more motorized air purifying masks with a flow rate of at least 160 l/min, such as with P3 filter Equipped . Lightweight and compact, it offers optimum comfort and is perfectly suitable for long-term asbestos removal operations
  • Level 3 (high concentration): From compressed air network or compressed air cylinders (breathing air cart) ( RAS Asbestos etc.) supplied air breathing system (mask with valve). It can be associated with a connection system for a breathing air supply hose and a connection device for an RD40 filter cartridge.

Due to this fiber, a wide range of security systems are available depending on the dust degree and risk analysis of workplaces. For the lowest levels, simple masks ( such as ffp dust masks), motorized air purifying masks ve en yüksek seviyeler için to air supply systems We can find everything.

Numerous accessories, such as high-seal valves or clothing accessories, improve the performance of these respirators.

Asbestos protective clothing

Hazmat suits are PPE suits that offer a waterproof seal to prevent contact between skin and particles . Disposable coveralls help prevent dust from spreading to other clothing. A type 5 disposable garment manufactured according to standard EN 13982-1 is suitable for protection against airborne asbestos dust. Hooded clothing that closes around the neck, ankles and wrists is preferred. Since asbestos removal work often takes a very long time, the material chosen must be breathable and easy to move around in.

Depending on the type of application, you can choose a single garment or a kit that includes all the accessories you need to protect yourself from this powerful fiber. Indeed, the use of waterproof gloves, goggles, appropriate footwear (safety boots or disposable shoe covers) or a special helmet for certain workplaces may be indispensable. This is the perfect complement to a P3 or FFP3 filter mask.

Some professionals also use Alfa bags specifically designed to handle small amounts of asbestos dust, which comply with standards that authorize the removal of asbestos waste.

Which sectors are most affected?

The construction industry is the sector most exposed to asbestos. Professionals working in asbestos removal, whether homes or offices, need this type of equipment.
Waste management workers are the second most exposed sector.

Some industries have secondary contact with asbestos:

  • Plumbers, electricians, heating engineers, air conditioners
  • Mechanics for light and heavy vehicles
  • kitchen installers

All companies that work with asbestos-containing materials have a process to remove all traces of fibers from their clothing. SAS decontamination system should use . Asbestos masks can also be used in building painting jobs. The stock of this PPE is always replenished to meet the needs of the relevant companies, ensuring its safety.

Our range of asbestos respiratory protection equipment

Various depending on dust levels asbestos respiratory protection equipment: from the classic asbestos respirator for level 1 to the powered air purifying respirator for level 2 and asbestos-fed air respirator systems for level 3.

Security Solutions for Limited Area Air Monitoring Devices and Limited Area Entrances

In closed areas

limited space , is a partially or fully enclosed structure that is not designed to be permanently occupied by workers. Working inside ( limited area entry ) must remain exceptional: during their construction, servicing (especially during cleaning) or maintenance (periodic inspection, repair).

Scope of application

  • Wastewater treatment: chlorination, ozonation
  • Crawl spaces, sewers, drains, pipes
  • Mines, long and thin galleries
  • Cisterns, tanks, containers
  • Wells, sinks, pits, silos and cellars

Limited area entry

Major dangers in confined spaces

Most of the accidents (often serious or fatal) that occur at confined space entrances are due to lack of oxygen, toxic gas or vapor existence and explosion or from fire It originates from . These are therefore the first hazards to watch for when anticipating intervention in this type of area.

  • suffocation , anoxy or hypoxia : temporary or definitive lack of oxygen, which can lead to death
  • Poisoning : Poisoning results from inhaling or absorbing a toxic substance ( hydrogen sulfide, carbon monoxide, hydrogen cyanide ) that can lead to death.
  • explosion and fire : The presence of flammable gases (natural gas, butane, propane, hydrocarbon vapors) or dust may cause fire and explosion.

Risk prevention at closed area entrances

Without entering any closed area feasibility and necessary prevention tools first. organized in advance It is highly recommended that you do so. To classic PPE (helmet, gloves, safety shoes, boots…) in addition, it is recommended to use 4 gas detectors (flammable gas, lack of oxygen, carbon monoxide and hydrogen sulfide) for the confined space and to have a self-rescue breathing apparatus for emergency evacuation. Good prevention also requires proper functioning of devices. Therefore, a daily crash test for portable gas detectors is recommended before each use.

Limited field training

All workers who may work in a confined space environment, such as construction workers, HVAC technicians, or firefighters, are required to receive appropriate confined space training depending on the risk level of their activities.

Confined space awareness courses are designed to help students learn more about safe working practices, the use of appropriate gas monitoring equipment, and what occupational safety regulations include.

Thanks to local education (in the U.S. OSHA confined space training in France CATEC® training and different indoor certification in other regions), employees who thrive in these environments are informed about their legal responsibilities under indoor regulations and other relevant legislation. They also understand how to prevent and respond to various risks. After receiving training, employees become aware of the dangers of working in confined spaces and understand the importance of implementing appropriate control measures and necessary emergency procedures.

Portable gas detectors and space gas monitoring devices for tight spaces

The most commonly used indoor air monitoring device is a 4-gas indoor air meter that simultaneously monitors flammable gas (CH4), oxygen (O2), carbon monoxide (CO), and hydrogen sulfide (H2S).

HVAC Refrigerant Leak Detector For Residential Area

In the event of a leak in an HVAC system, air conditioner refrigerant gas could potentially cause asphyxia. This type of gas cannot be detected without a suitable HVAC leak detector. Refrigerants are odorless, colorless and heavier than air. If an AC refrigerant leak occurs, the gas will accumulate from floor to ceiling, reaching dangerous concentrations. It will displace oxygen in the air and cause asphyxia in people in the room, office or other living area affected by the leak.

Autonomous HVAC refrigerant – freon gas detector

MVR 300 is a self-contained HVAC refrigerant leak detector. This refrigerant gas detector is suitable for all types of electrical installations and requires no additional work to ensure protection. Because Freons are heavier than air, the detector must be mounted near the ground to detect any refrigerant leaks.

With its sensitive measuring range and low alarm value set at 500 ppm, the MVR 300's sensor will detect dangerous freon gas concentration before possible anoxia.

Thanks to its unobtrusive design, the MVR300 fits anywhere and can be installed in any occupied space: hotel rooms, offices, shops or even to detect freon leaks in houses and apartments…

The MVR300 HVAC freon leak detector is more discreet than a smoke detector. It allows monitoring of any possible danger in case of air conditioning malfunction. This is the solution chosen by luxury hotels in France and around the world, such as Hilton Hotels.

Air conditioning systems inspection regulation:

Installation and maintenance of AC systems EN378 standard Edited by . Since January 2017 the standard has been improved to promote some refrigerants over others. Some HFOs may have a long-term positive impact on climate change It has excellent environmental properties.

Article 1 states that air conditioner owners should regularly check their air conditioning installations. The maximum time interval between two reviews is determined in clause 4. Thanks to a refrigerant gas detector for residential areas such as the MVR 300, this control is permanent and the risks from freon leakage are reduced. This solution is also cheaper than involving an external company to continue the review.

Breathalyzer And Drug Test

electronic breathalyzer

Dräger's portable DA3820 And DA5820 The advanced design of the breathalyzer allows professionals to perform breath alcohol measurements quickly and easily. The testing process with these devices is designed for hygienic use and provides highly reliable results. These devices can also monitor alcohol concentrations in ambient air without using a mouthpiece (passive method).

Dräger DA3820 and DA5820 breathalyzers from Dräger 30 million breath alcohol tests per year performer to the french police It uses the same sensor technology as the professional breathalyzer devices it provides.

Ignition interlock device

Ignition interlock device or IID in public transport It is a regulated unit used in . Buses carrying children - including school buses - are increasingly required to be equipped with interlock breathalyzers worldwide. This arrangement tends to extend to every bus. Additionally, more and more companies are using this technology in their vehicles.

Alcohol interlock systems are automatic systems that require drivers to blow into a breathalyzer built into their vehicle. They can be adjusted to comply with different limits according to any country's legislation, but generally the vehicle can only be started if alcohol is not detected. Transportation safety experts have hailed this technology as a key component in reducing road deaths.

Breathalyzer calibration

In many countries, personal disposable breathalyzers are now controversial due to ethanol reagent toxicity. Their disposal should be done outside of classical recycling circuits. This does not apply to electronic breathalyzers because they are reusable (except for the plastic mouthpiece). They only need calibration every six months to ensure consistently accurate measurements.

Disposable breathalyzer calibration gas Our cylinders (non-refillable) are certified and have many advantages:

  • Ideal for low volume applications
  • Extreme portability and ease of use
  • Long 60 months shelf life
  • Automatically issued certificates of analysis
  • fast delivery

Ethanol (C3H6O) calibration gas cylinders are made of aluminum. These disposable cylinders are filled with precise and known concentrations (usually 260 ppm). Calibration gas cylinders are mixed gravimetrically under the ISO6142 standard, ensuring accuracy, stability and maximum shelf life.

Drug testing and analysis

In addition to our range of electronic alcohol breathalyzers, we also offer drug testing devices for the following substances: cocaine, opioids, marijuana, amphetamines and methamphetamines. This system consists of a saliva drug test strip unit and a cassette filled with reagent fluids.

Depending on the measurement accuracy, the test time is set between 3 and 5 minutes. When an item is not detected, a line facing the category is clearly displayed. Such devices are certified as a medical unit in the EU – regulation 98/79/IEC – and can be used for professional applications.

Headspace Gas Analyzer For Modified Atmosphere Packaging

The main purpose of modified atmosphere packaging and headspace gas is to extend the life of the product . This process often changes the oxygen concentration (O2) inside the packaging to include oxidation (chemical reaction) and other gases that will slow down microbe growth and development.

To obtain the most effective protection for each type of food It has its own modified atmosphere. For example, the modified atmosphere recommended for apples is 5% oxygen, 5% carbon dioxide and 90% is set to nitrogen . For red meat, the ideal modified atmosphere for retail consists of 70% oxygen and 30% carbon dioxide. It is essential to use a headspace gas analyzer to ensure packaging compatibility, safety and accurate measurements. Such detectors require regular calibration.

Benefits of the Headspace gas analyzer

Portable Oxybaby® protective atmosphere analyzer A lot It has the advantage:

  • Very small gas sample required – does not change the composition of the protective atmosphere – no risk of degradation
  • Automatic controlled flow with alarm event in case of sampling needle obstruction
  • Measurement data history can be accessed via the device and previous results can be compared
  • Large backlit display for easy reading in any situation
  • Easy transportation thanks to rechargeable battery
  • Shockproof plastic case for the harshest environments

Our certified gas mixtures for Headspace gas analyzer calibration come in disposable, non-refillable calibration gas cylinders .

  • Ideal for low volume applications
  • Easily portable and easy to use
  • 60 months shelf life
  • Certificates of analysis are automatically provided
  • Fast supply and delivery

Gas mixtures are mixed gravimetrically using ISO6142 standard requirements. They ensure accuracy, optimum stability and maximum shelf life.

Parking lot gas detection systems

Parking lots are generally poorly ventilated enclosed spaces. Steady flow of vehicles, carbon or nitrogen oxides It expels combustion gases that are particularly harmful to health, such as. These hazardous emissions are even higher in vehicles operating in cold weather. To secure these enclosed areas there is usually a car parking garage gas detection monitor Recommended for use (when not required).

Parking lot gas detection

The main harmful gases found in car parks are carbon monoxide (CO) and nitrogen oxides (NOX), such as nitric oxide (NO) and nitrogen dioxide (NO2). In electric or hydrogen vehicles LPG Other gases such as (liquefied petroleum gas) and hydrogen also exist (potential release of hydrogen during charging).

Relays will be activated if gas is present at dangerous concentration levels. Thus, the parking lot ventilation system or visual and audible alarms can be triggered for evacuation. These safety devices are all connected to the gas detection controller with preset actions.

Car park ventilation system and smoke extraction

Most parking lots risks associated with toxic gas It is equipped with air extractors to prevent Although efficient, these units fail because ventilation systems operate at fixed or random times, regardless of toxic gas concentrations. energy intensive...

By constantly monitoring concentrations, gas detection controllers for car parks security provides. Also, because they activate ventilation systems and smoke extractors only when needed. They are also cost efficient. Continuous monitoring optimizes the efficiency of ventilation systems, reducing operating costs.

Our parking gas detection control devices:

In many countries around the world, gas detection systems (in parking lots with more than 500 spaces) It is mandatory to install fixed gas detectors and control devices.

Tunnel And Underground Gas Monitoring

Grand Paris project, gas detection in tunnels It is a perfect example of its importance. around Paris transportation network This massive project, aimed at improving and expanding, includes the construction of many new tunnels.

There have been five deaths and several serious accidents since work began, making The Grand Paris Express has once again revealed the major safety challenges at its construction sites. This , gas detection tools , sufficient to security devices and emphasizes the need for continuous employee training .

Workers in these fields toxic and explosive gases And limited working conditions It faces high risks such as . Therefore, to ensure their safety and prevent serious accidents. multi-gas detectors , tracking signs or like OXY SR Self-rescuers are a must.

A confined space is an enclosed volume, and most serious or fatal accidents that occur during work in these environments are related to the presence of explosive, toxic or asphyxiating substances (lack of oxygen). These will be the first risks to be assessed when developing a working procedure for safety with devices for detecting gaseous emissions in tunnels.

Which gases need to be monitored in tunnels?

Chronic exposure to exhaust gases can lead to significant neurological disorders (headache, dizziness, irritability, drowsiness, convulsions), bronchial irritation and sometimes lung cancer. Therefore, in road or railway tunnels mean values ​​(VME) and limit values ​​(VLE) of exposure to detect gaseous products measure and continually monitor It is mandatory:

  • Carbon monoxide
  • Carbon dioxide
  • Nitrogen oxides (nitric oxide and nitrogen dioxide)
  • Sulfur dioxide
  • Volatile organic compounds (VOCs), including benzene
  • lack of oxygen

Sensors for gaseous substances in tunnels

Multiple gas detector and area monitoring sign

personal protection Regarding , multi-gas detector continues to be essential PPE, as does 4-gas detector. You can also secure one or more work areas with field gas monitors to better define the safety perimeter. For very long tunnels, we recommend communication solutions as shown below…

LENS Wireless technology

Particularly suitable for tunnels LENS™ Wireless technology , is a new approach to safety on a construction site. With this solution, a gas detector or field tracking beacon, When an alarm is triggered following a toxic product hazard, a “man in distress” alarm, or a panic situation, all persons in the connected group will immediately know about the danger.

⇒ More about LENS Wireless technology 

Gas detection – protection for TBM operators

The most commonly used (and cheapest) model for operations performed in confined spaces It is a portable 4 gas detector (explosive gases, O2, CO and H2S). But if you want to be more relevant for tunnels, you can use CO – CO2 – NO – NO2 – O2 You can choose a multi-gas sensor that is ideally configured to detect cells. Some can monitor up to 6 gases simultaneously. Available in a diffusion version or with a remote sampling pump, this sensor is perfectly suitable for hazardous areas, environments that are potentially explosive, toxic, suffocating or contain VOCs (volatile organic compounds).

One of the most reliable tunnel work transmitters Dräger's X-am 5000 portable detector Dräger's X-am 5000 portable detector personal tracking device, potentially explosive gases and vapors, Detects oxygen deficiency and toxic gas concentrations. Generally clip pump , sampling hose and comes with accessories such as workplace beacon .

To guarantee safe operation, sensors in the tunnel industry need to be checked regularly. Companies find themselves doing a calibration or process to check the operation of that sensor. Equips with crash test station.

Whether in France or Europe, people working in tunnels have masks and detection devices, etc. Respiratory protection equipment must be used.

Area gas monitor – X-zone 5500

X-am 8000 portable multi-gas detector

G7 EXO geolocated area gas monitoring

Field gas monitor – Radius BZ1

Respiratory protection and self-rescue mask

Ocenco's M20.2 Self-rescuing masks, such as , are used in non-breathable, oxygen-poor, highly smoky or extremely toxic environments where the filter device would be ineffective or even dangerous. emergency escape specially designed for are respiratory protection devices . They were originally designed for emergency evacuation during work in mines, large tunnels or confined spaces. They are easy to use and guarantee worker safety.

Escape hood, It is particularly suitable for fire protection in a tunnel. Vapors, particles and toxic industrial gaseous substances It offers 15-minute resistance against and allows users to withdraw from the danger zone, for example during smoke evacuation.strial gaseous substances.

to gas emissions In addition, tunnels are prone to fires, floods, chemical emissions and are places where collapses can occur . Because SCBA equipment Wearing it is not enough. The company responsible for the work must establish a security perimeter and an escape route inside the tunnel is essential. The second should open into a passage under the path leading outside.