Car Parks are More Dangerous Than You Think

Road vehicles can emit a number of harmful gases through exhaust fumes, the most common being carbon monoxide (CO) and nitrogen dioxide (NO₂). Whilst these cause gases are an issue in open air environments, there is particular cause for concern in more confined spaces such as underground and multi-storey car parks.

Why are car parks of specific concern?

The gases emitted through exhaust fumes are absolutely an issue regardless of where they are being emitted, and contribute to a wide variety of issues including air pollution. However, in car parks any dangers these gases cause are exasperated due to the high number of vehicles in a small, confined area and the lack of natural ventilation to ensure that these gases do not reach dangerous levels.

What gases are present in car parks?

Vehicles emit a variety of exhaust gases including carbon dioxide, carbon monoxide, nitrogen dioxide and sulphur dioxide. Carbon monoxide and nitrogen dioxide are the most common and are also of particular concern due to the potential negative impacts on human health that exposure to these gases can have.

What are the dangers of gases in car parks?

Out of the two most common gases in car parks, carbon monoxide poses the more significant threat to human health. It is an odourless, colourless and tasteless gas making it almost impossible to detect without some sort of detection equipment.

Carbon monoxide is dangerous as it negatively impacts the transport of oxygen around the body which can cause a wide range of health problems. Breathing low levels of CO can cause nausea, dizziness, headaches, confusion and disorientation. Regularly breathing low levels of CO may cause more permanent health issues. At very high levels carbon monoxide can cause loss of consciousness and even death, with around 60 deaths attributed to carbon monoxide poisoning in England and Wales every year.

Breathing in nitrogen dioxide also has negative health impacts including breathing and respiratory issues as well as damage to lung tissue. Exposure to high concentrations can cause inflammation of the airways and prolonged exposure can lead to irreversible damage to the respiratory system

What regulations are there?

In 2015, a new European Standard (EN 50545-1) was introduced, specifically relating to the detection of toxic gases such as CO and NO₂ in car parks and tunnels. EN 50545-1 specifies requirements for remote gas detectors and control panels to be used in car parks. The goal of the standard is to increase the safety of gas detection systems in car parks and prevent the use of inadequate systems. Th standard also the alarm levels to be used for gas detection in car parks, shown in the table below.

	Alarm 1	Alarm 2	Alarm 3
CO	30 ppm	60 ppm	150 ppm
NO₂	3 ppm	6 ppm	15 ppm

Crowcon Park System

Crowcon have recently launched a new range of fixed detectors and control panels designed specifically for gas detection in car parks.

The SMART P set of detectors, consisting of the SMART P-1 and SMART P-2 can detect CO, NO₂ and petrol vapours, with the SMART P-2 offering simultaneous detection of both CO and NO₂ in a single detector. The MULTISCAN++PK control panel can manage and monitor up to 256 detectors. Every product in the range has been designed to fulfil the requirements of the European Standard EN 50545-1.

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Our Partnership with Hans Buch A/S

Providing the full package from sale to maintenance is crucial for service providers. Combining this with marked experience, product knowledge and expertise, ensures customers are provided safe, reliable and suitable equipment.

Background

Hans Buch A/S is an engineering and trading company located in Albertslund in Denmark. With more than 100 years in the industry, Hans Buch A/S are specialised in preparing the highest knowledge and the most optimal solutions in areas such as instrumentation, Meteorology, Data measurement and data collection, Air quality and Gas detection. Over many years, Hans Buch A/S have established a wealth of specialist knowledge in their core areas as well as a wide product range with leading suppliers. All this combined enables Hans Buch A/S to always prepare the sharpest solutions for their customers.

Views on Gas Detection

Gas detection is recognised as a piece of equipment that is required for safety and is a crucial and potential lifesaving piece of equipment for those who work in hazardous environments. Therefore, supplying the right solution for the job plus the understanding in how to use the equipment correct is an essential part of the dialog with Hans Buch A/S when buying.

In addition to selling lifesaving equipment, Hans Buch A/S provide information on the importance of regular maintenance and calibration of the equipment.

Working with Crowcon

Hans Buch A/S has worked with Gas detection for 20 years and began working with Crowcon in 2016. A 6-year partnership with continuous growth has allowed Hans Buch A/S to supply and meet their customer’s needs for gas detection in various sectors. “Crowcon supply to many industries, with variety of detectors and gas ranges, presenting themselves at the forefront of the industry when it comes to technology, quality and ease of use. Excellent technical support and sales support is crucial when challenges arise or when special demands allow us to provide new developments to meet customer’s needs.” Through our training academy, Hans Buch Service engineers are certified to calibrate and service Crowcon equipment.

For more information visit Hans Buch A/S or email.

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A brief history of gas detection

The evolution of gas detection has changed considerably over the years. New, innovative ideas from canaries to portable monitoring equipment provides workers with continuous precise gas monitoring.

The Industrial Revolution was the catalyst in the development in gas detection due to the use of fuel that showed great promise, such as coal. As coal can be extracted from the earth through either mining or underground mining, tools like helmets and flame lights were their only protection from the dangers of methane exposure underground that were yet to be discovered. Methane gas is colourless and odourless, making it hard to know it’s presence until a noticeable pattern of health problems was discovered. The risks of gas exposure resulted in experimenting with detection methods to preserve the safety of the workers for years to come.

A Need for Gas Detection

Once gas exposure became apparent, miners understood that they needed to know whether the mine had any pocket of methane gas where they were working. In the early 19th century, the first gas detector was recorded with many miners wearing flame lights on their helmets to be able to see while they were working, so being able to detect the extremely flammable methane was paramount. The worker would wear a thick, wet blanket over their bodies while carrying a long wick with the end lit on fire. Entering the mines, the individual would move the flame around and along the walls looking for gas pockets. If found, a reaction would ignite and be noted to the crew while the person detecting was protected from the blanket. With time, more advanced methods of detecting gas were developed.

The Introduction of Canaries

Gas detection moved from humans to canaries due to their loud chirps and similar nervous systems for controlling breathing patterns. The canaries were placed in certain areas of the mine, from there, workers would check on the canaries to care for them as well as see if their health had been affected. During the work shifts, miners would listen to the canaries chirp. If a canaries began to shake its cage, that was a strong indicator of a gas pocket exposure in which it has started to affect its health. Miners would then evacuate the mine and noted that it was unsafe to enter. On some occasions if the canary stopped chirping all together, miners knew to make a swifter exit before the gas exposure had a chance to affect their health.

The Flame Light

The flame light was the next evolution for gas detection in the mine, as a result of worries about animal safety. Whilst providing light for the miners, the flame was housed in a flame-arrestor shell which absorbed any heat and captured the flame to prevent it from igniting any methane that may be present. The outside shell contained a glass piece with three incisions running horizontally. The middle line was set as the ideal gas environment while the bottom line indicated an oxygen-deficient environment, and the top line indicated methane exposure or an oxygen-enriched environment. Miners would light the flame in an environment with fresh air. If the flame lowered or started to die, it would indicate that the atmosphere had a low oxygen concentration. If the flame grew larger, the miners knew that methane was present with oxygen, both cases indicating that they needed to leave the mine.

The Catalytic Sensor

Although the flame light was a development in gas detection technology, it however, was not a ‘one size fits all’ approach for all industries. Therefore, the catalytic sensor was the first gas detector that has a resemblance to modern technology. The sensors work on the principle that when a gas oxidises, it produces heat. The catalytic sensor works through temperature change, which is proportional to the concentration of gas. Whilst this was a step forward in the development of the technology required for gas detection, it still initially required manual operation in order to receive a reading.

Modern Day Technology

Gas detection technology has been developed tremendously since the early 19th century in which the first gas detector was recorded. With now over five different types of sensors commonly used across all industries, including Electrochemical, Catalytic Beads (Pellistor), Photoionisation detector (PID) and Infrared Technology (IR), along with the most modern sensors Molecular Property Spectrometer™ (MPS™) and Long-Life Oxygen (LLO2), modern day gas detectors are highly sensitive, accurate but most importantly reliable, all of which allow for all personnel to stay safe reducing the number of workplace fatalities.

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Our Partnership with CSL

Background

CSL is one of the largest providers of gas detection in the Irish market and the leading provider of plant and supporting services to the water, wastewater, environmental and industrial sectors. With headquarters in County Carlow, Republic of Ireland, CSL provide 24 hours, 7 days a week, 365 days a year maintenance and support to their customers nationwide through their network of engineers and support personnel located across the country. CSL is a customer-focused company providing a one-stop-shop to their clients. With over 30 years of experience, CSL delivers effective gas detection solutions for the long term. CSL supplies a wide range of gas detection products, from portable devices to complete fixed gas detection systems and customised installations in many sectors.

Views on gas detection

As a critical safety issue, CSL put the design, equipment selection, long-term maintenance, and clarity of the alarm system to the forefront of our gas detection solutions. “We understand that there is always a balance between investment and striving for the highest level of gas safety. Still, from our point of view, safety wins every time as cutting costs in an area as vital as gas safety is a false economy. This is one of the main reasons we work very hard to develop the relationship and partnership and promote the Crowcon Gas Safety product range. When we meet with our clients and discuss their gas safety challenges, the conversation inevitably discusses costs. Because of the sizeable Crowcon product range, we always have a solution that will meet their budget and safety requirements.”- Peter Nicholson, Head of Marketing.

Working with Crowcon

A 30-year partnership and continued communication have allowed CSL to supply their customers with gas detection solutions. “Providing fixed and portable solutions ensures a gas safety package that will work for any company or organisation that depends on high-quality gas detection and related equipment.” – Peter Nicholson, Head of Marketing. We’re thrilled to be working alongside CSL to provide gas detection to the Irish market and support with services to the water, wastewater, environmental and industrial sectors. With over 30 years of experience, CSL delivers effective gas detection solutions for the long term through the supply of our portable devices and fixed gas detection systems.

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Our Partnership with Shawcity

Background

Established in 1976, Shawcity was one of the first companies to introduce specialist gas detection devices to the UK and Irish markets from leading manufacturers around the world. For over 45 years, they have focused on providing the latest monitoring technology in partnership with leading manufacturers to customers across the UK and Ireland.

Shawcity supports those working in health and safety, occupational hygiene and environmental applications who rely on achieving the highest levels of performance. With instruments available to hire or buy, Shawcity has the capacity to ensure each order is tailored to meet individual project demands. Their portfolio offers an extensive range of monitoring detection including fixed gas detection, potable gas detection and air quality.

Views on Gas Detection

As the focus on workplace health continues to develop, a better understanding of the ways workers can be impacted is leading to changes in legislation and an increasing responsibility for employers to protect their employees at work. Gas detection, in particular, is critical in terms of potential safety and can, in some cases, involve an immediate threat to life. Ensuring the correct equipment is provided and maintained is one of the key responsibilities that health and safety officers have.

The latest technology also means that effective monitoring on a personal, area or environmental level has never been easier to achieve. Shawcity works with every customer to ensure the right equipment is supplied for the job every time and also offer free product training.

Working with Crowcon

The partnership between Crowcon and Shawcity provides an unbeatable combination of industry knowledge and expertise. The two companies work closely together on fixed gas detection projects across many sectors to provide the complete package, from site surveys, planning and design through to installation, commissioning and ongoing service and maintenance.

Now supplying our portable range, Shawcity now can support an even wider range of new markets and sectors. “Shawcity is an official Trusted Partner. Crowcon and Shawcity collaborate at every stage of the gas detection process – from product development through to technical support – to deliver the best possible service to customers” – Nathan Marks, Fixed Gas Detection Manager at Shawcity.

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Our Partnership with Guardsman

Background

Guardsman Ltd. are one of the leading suppliers of Personal Protective Equipment and Workwear in the UK, based centrally in Leicester with their Sales and Distribution Centre. Guardsman have been a part of Bunzl PLC, a global £9.2 billion FTSE 100 company, who specialise in the supply of Personal Protection Equipment (PPE), Cleaning and Hygiene Supplies and Contractors’ Site Equipment, for 9 years. Although Guardsman has been supplying safety equipment, workwear and PPE to major industrial customers and utilities for over 45 years. During this time, they have followed their simple philosophy “To provide the correct protection at a competitive price, through friendly and efficient staff with flexible supply arrangements.” throughout this time they have built a substantial portfolio of blue-chip clients across all sectors of industry, where they now supply to 27 countries across 5 continents. Guardsman’s customers are striving for excellence in their fields and expect to receive excellence from Guardsman as a supplier.

Views on Gas Detection

With the Personal Protective Equipment at Work Regulations 2022 scheduled for amendment with the 1992 Regulations being extended to employers’ and employees’ duties in respect of PPE to a wider group of workers. These changes will mean that employers will now have duty to concern the provision and use of personal protective equipment (PPE) at work.

With these scheduled changes leading to a shift in who is responsible for workplace PPE, Guardsman have in response to this begun developing conversations with existing relationships in gas detection to identify the pains their customers may have and to allow the easiest way to provide correct equipment.

Working with Crowcon

Through continuous communication Crowcon will allow Guardsman to extend the safety they provide. Our partnership has also allowed for the enhanced understanding of gas detection and its importance in certain industries, all of which allow for Guardsman to provide gas detection products within the industries they provide, such as manufacture and automotive. “Our partnership with Crowcon now offers a solution to our customers that we were unable to offer previously, thereby enhance our specialism in providing PPE to existing and future customers.”

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Our Partnership with Frontline Safety

The Safety Distribution Industry has transformed a great deal in the last few years, as companies rely more on the use of the Internet to gather information about products, applications and pricing.

Background 

Founded in 2003 and headquartered in Glasgow, Frontline Safety is a global supplier of gas detection, environmental monitoring and occupational safety equipment. Frontline has over 30 years of experience in the service of gas detection systems, providing tailored support working with individuals and organisations of varying degrees and sizes across various sectors, including oil and gas, energy, general process, chemical, pharmaceutical, and environmental.

Views on Gas Detection

Due to industrial environments having the possibility to house a range of gases for commercial production purposes, a variety of gas detectors may be required, including both portable, multi-gas detectors and fixed detectors, both being an essential part of health and safety requirements. Therefore, providing the most appropriate equipment and service that will meet both the needs of the customer and HSE requirements.

Working with Crowcon

“As Gas detectors are at the forefront of Frontline Safety’s product offering, our partnership allows Frontline to provide the highest quality possible. Our Partnership with Crowcon allows us to give our customers access to a well-recognised brand. Their extensive gas detection range complements our existing product range and enables us to produce the required equipment to reduce injury to workers within the oil and gas, energy, general process, chemical, pharmaceutical, and environmental industries as well as helping the environment.” As a Crowcon partner, Frontline Safety UK is fully trained and authorised in the use, calibration, servicing, and repair of Crowcon equipment.

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What is Purge Testing and when should I be doing it?

Purge testing is vital when installing, replacing or maintaining a natural gas pipeline or storage tank, or filling new pipework with flammable gas. This process uses an inert gas to clear the enclosed environment of flammable gases prior to air being introduced thereby preventing air and flammable gas mixing. Such mixtures could of course lead to explosive combustion.

What is Purge Testing?

Purge testing is a key part of the process of making a working environment safe prior to entering it to carry out work. Analysis of the atmosphere in the pipe or enclosure shows the starting point – usually 100% flammable gas. Purge testing is the measurement and reporting of the atmosphere as an inert gas is introduced. As the flammable gas declines to a safe level well below concentrations that would be dangerous in air, the atmosphere is continually analysed, and the flammable gas concentration reported. Once a low concentration has been achieved, air may be introduced. During this phase the flammable gas concentration is analysed to check it remains low, and oxygen concentration is measured to indicate when the atmosphere becomes breathable. Work may then commence – all the while protected by the measurement of flammable gas and oxygen concentration. If, as is likely, the purge testing is being carried out via suction of atmosphere through a sample tube, then this sample tube must at all times and all along its length be held above the flash point of the flammable gas in the tank. This is vital to both your safety and the safety of those working with you.

Purging removes or displaces hazardous gases from the tank or pipework to prevent them from mixing with the air you need to introduce into the tank to carry out the inspection or maintenance task. The most used and preferred purge gas is Nitrogen, due to its inert properties. After conducting the inspection or maintenance task the reverse process is carried out, reintroducing the inert gas and reducing the oxygen level to near zero prior to allowing natural gas to re-enter. Often a service valve on the line with a standpipe or diffuser attached is cracked to release the venting gas or nitrogen. Purging systems are generally designed to redirect additional gases away from the work area preventing them from remixing with the gas within the tank or pipework.

Why Conventional Gas Detection isn’t enough

Traditional gas detection systems are not designed to work in oxygen-deprived environments. This is because they are primarily designed as safety equipment with the specific purpose to detect small traces of target gases in otherwise normal breathable environments. Gas detection equipment designed for use in purge testing activities must be able to function in low oxygen environments and with all contaminants likely to be found in tanks and pipes being purge tested. If sensors can be poisoned by the contaminants present or if there isn’t enough oxygen in the air to enable the selected sensor technology to be used, it may lead to the sensors on the device producing inaccurate results, posing a threat to those working within that environment. An additional point to note to note is that certain gas combinations, concentrations and corrosive liquids may damage the gas detection equipment, rendering it useless. For these reasons, Infrared technology or thermal conductivity is usually chosen as the measurement technology of choice for purge tests. Crowcon uses infrared technology in these applications. A fortunate by-product of that design decision is better accuracy than required over the full sensing range.

More about Purge testing

Purge Testing is essential for workers as some may be breathing in toxic gases without even realising it if the sensors on their detection equipment have become defective, don’t measure the required gas type or don’t measure over the required gas range, or environmental range present. Toxic or asphyxiant gas exposure can lead to respiratory issues, significant injury, even death.

Workers cannot merely rely on a standard confined space gas detection instrument to adequately test for safe conditions during this process, as the high gas level may overwhelm or damage an LEL (Lower Explosive Limit) sensor depending upon type. Or the sensor may not function in an oxygen-depleted atmosphere leading to an unreported dangerous condition.

What products do we offer?

Our Gas-Pro TK is a specialised tank monitor that is perfect for customers who want to purge, free, or maintain storage and transportation tanks due to its integrated auto switching dual range IR sensor technology. Other sensors in the product, for example the H2S (Hydrogen Sulphide) sensor option cover other potential risks if gases vent during purging.

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The Future of Connected Safety

Connected safety is becoming a popular phrase in health and safety settings generally, and gas detection in particular. That’s a good thing – because it’s no overstatement to describe connected safety as an evolutionary step in gas monitoring and protection, and it’s a field that is developing all the time.

In this post we’ll establish exactly what connected safety means for anyone monitoring gas hazards, and find out why it pays to take note of developments in this area.

What is Connected Safety?

In gas monitoring terms, connected safety refers to using the internet of things (IoT) to connect gas detection devices (for example, portable gas monitors) to software that pulls the gas exposure information and other data stored on the detector (the identity of the user for any given session, the extent to which the device was used correctly, etc.), analyses it and presents it in useful forms.

By wirelessly connecting each gas monitor – and the data it collects during each work session – to a specialist software package, you can spot patterns of gas exposure, patterns of use and misuse of detectors and automatically store all of the information you need to quickly prove regulatory and legal compliance.

When this information is scaled up across entire device fleets, naturally the data it produces also scales up and can be aggregated. And if that data is acted upon, it can improve safety across your business and drive better, more informed decisions.

That is, in a nutshell, how our Crowcon Connect solution works.

How does Crowcon Connect work for Connected Safety?

Crowcon Connect is Crowcon’s own software, which works with all current (manufactured from 2004 onwards) and future Crowcon portable gas detectors. Because we own and develop the software, we are constantly upgrading it in light of customer feedback and can make customised versions where required (although it’s also really easy for users to configure the standard dashboard to suit their own needs).

Quick User Assignment easily links devices, events and people

For each work session, anyone who needs a portable detector simply scans in their ID (for example, their work ID badge) and is allocated a device. If they don’t like that device (for example, if it’s not suitable for the job in hand) they can simply re-scan their badge to be assigned another detector.

When the user returns the detector to its dock at the end of the work session, the dock transfers the data to the Crowcon Connect portal while simultaneously un-allocating the device, ready for the next user.

The data transferred to the portal includes details of the user and the device, exposure and alarm information and a full range of gas data. Once that data reaches the portal, Crowcon Connect can crunch the numbers and work its magic.

Connected Safety streamlines processes, improves outcomes

The Crowcon Connect user interface is very intuitive and easy to customise, which means every user can see precisely the information that matters to them, whenever and wherever they need it.

For example, it becomes very straightforward to prove regulatory compliance when real-time data is available, and easy to spot potentially dangerous areas when alarm data begins to cluster. Mundane tasks – such as flagging those detectors that are due for calibration and/or maintenance – can be automated, which saves time and reduces the risk of human error.

Of course you can also aggregate fleet-wide, site-wide and/or team-wide data, which lets you to spot patterns (for example, of exposure events or device losses) and make relevant changes. This helps you to improve your site and workforce safety, and you can always locate detectors (and any workers attached to them) in real time.

Is Connected Safety the way of the future?

In a word, yes. We live in a data-driven world and the use of information is driving improvements in all sectors, gas detection included. Our increasing (and increasingly widespread) reliance on technology is only going to amplify that.

After all, data can do much to offset the shortcomings of human management. Data is objective, not driven by assumptions or bias, and gives an honest reflection of what is actually happening in the field, rather than what is intended to happen. If you’ve ever worn a fitness tracker for a while, you’ll get this idea!

However, data analytics are only useful if they are based on top quality, current information – and that’s where connected safety comes in. Connected safety applications collect information accurately and in real time. If you manage gas monitoring, with data straight from the device you will be operating on the basis of objective, trustworthy information. What is more, you can use that information to make people safer – and even save lives.

We’ll be sharing some more posts about connected safety in the coming weeks, so please come back to this page for those. In the meantime, why not have a look at our white paper on connected safety for more detailed information, or check out our Crowcon Connect pages?

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Why HVAC professionals are at risk from Carbon Monoxide – and how to manage it

Carbon Monoxide (CO) is an odourless, colourless and tasteless gas that is also highly toxic and potentially flammable (at higher levels: 10.9% Volume or 109,000ppm). It is produced by the incomplete combustion of fossil fuels such as wood, oil, coal, paraffin, LPG, petrol and natural gas. Many HVAC systems and units burn fossil fuels, so it’s not hard to see why HVAC professionals may be exposed to CO in their work. Perhaps you have, in the past, felt dizzy or nauseous, or had a headache during or after a job? In this blog post, we’ll look at CO and its effects, and consider how the risks can be managed.

How is CO generated?

As we have seen, CO is produced by incomplete combustion of fossil fuels. This generally happens where there is a general lack of maintenance, insufficient air – or the air is of insufficient quality – to allow complete combustion.

For example, the efficient combustion of natural gas generates carbon dioxide and water vapour. But if there is inadequate air where that combustion takes place, or if the air used for combustion becomes vitiated, combustion fails and produces soot and CO. If there is water vapour in the atmosphere, this can reduce the oxygen level still further and speed up CO production.

What are the dangers of CO?

Normally, the human body uses haemoglobin to transport oxygen via the bloodstream. However, it is easier for the haemoglobin to absorb and circulate CO than oxygen. Consequently, when there is CO around, danger arises because the body’s haemoglobin ‘prefers’ CO over oxygen. When the haemoglobin absorbs CO in this way, it becomes saturated with CO, which is promptly and efficiently transported to all parts of the body in the form of carboxyhaemoglobin.

This can cause a range of physical problems, depending on how much CO is in the air. For example:

200 parts per million (ppm) can cause headache in 2–3 hours.
400 ppm can cause headache and nausea in 1–2 hours, life threatening within 3 hours.
800 ppm can cause seizures, severe headaches and vomiting in under an hour, unconsciousness within 2 hours.
1,500 ppm can cause dizziness, nausea, and unconsciousness in under 20 minutes; death within 1 hour.
6,400 ppm can cause unconsciousness after two to three breaths; death within 15 minutes.

Why are HVAC workers at risk?

Some of the most common events in HVAC settings may lead to CO exposure, for example:

Working in confined spaces, such as basements or lofts.
Working on heating appliances that are malfunctioning, in a poor state of repair, and/or have broken or worn seals; blocked, cracked or collapsed flues and chimneys; allowing products of combustion to enter the working area.
Working on open-flued appliances, especially if the flue is spilling, ventilation is poor and/or the chimney is blocked.
Working on flue-less gas fires and/or cookers, especially where the room volume is of inadequate size and/or the ventilation is otherwise poor.

How much is too much?

The Health and Safety Executive (HSE) publishes a list of workplace exposure limits for many toxic substances, including CO. You can download the latest version free of charge from their website at www.hse.gov.uk/pubns/books/eh40.htm but at time of writing (November 2021) the limits for CO are:

Workplace Exposure Limit

Gas	Formula	CAS Number	Long Term Exposure Limit (8-hr TWA Reference Period)	Short Term Exposure Limit (15-min Reference period)
Carbon monoxide	CO	630-08-0	20ppm (parts per million)	100ppm (parts per million)

How can I stay safe and prove compliance?

The best way to protect yourself from the hazards of CO is be wearing a high quality, portable CO gas detector. Crowcon’s Clip for CO is a lightweight 93g personal gas detector that sounds at 90db alarm whenever the wearing is being exposed to 30 and 100 ppm CO. The Clip CO is a disposable portable gas detector that has a 2-year lifespan or a maximum of 2900 alarm minutes; whichever is sooner.

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