What every UK pub needs to know about gas detection

Gas detection highlighted as safety priority in UK hospitality

Crowcon has reported that pressurised CO₂ and mixed-gas systems used in pubs, restaurants, and breweries present an ongoing safety risk.

The company explained that gas leaks in these environments have been linked to both fatal and non-fatal incidents.

It added that one such case occurred in 2010, when a hotel worker died after being overcome by CO₂ while taking in a delivery of beer kegs.

Crowcon stated that the hospitality sector faces elevated risks because gas systems are often located in confined and poorly ventilated areas.

It noted that these conditions can allow odourless and colourless gases to accumulate undetected.

Statements from Crowcon on industry risks

Ed Clapham, Product Manager at Crowcon Detection Instruments, said: “In the hospitality and brewing industries, gas detectors play a vital role in protecting everyone involved in day-to-day operations, from frontline staff and delivery drivers to gas cylinder suppliers, MRO teams, cleaning contractors, and even customers.

“Regardless of whether they’re employed directly by the business, a gas leak can pose a serious risk to anyone on-site.

“This is why gas detectors are vital in areas where there is a higher risk of CO₂ exposure. The air we normally breathe contains around 20.9% oxygen.

“If there’s a gas leak, oxygen levels can drop below 19.5%, the threshold for an unsafe atmosphere. Even a slight drop can cause dizziness, reduced alertness, and poor coordination.

“People may not immediately realise they’re impaired, which makes the situation even more dangerous.

“The lower the oxygen level and the higher the CO₂ concentration, the more life-threatening the exposure becomes.

“In one such case in 2006, a brewery technician died after being overcome by CO₂ during routine maintenance.”

Health and safety obligations

Crowcon stated that CO₂ is heavier than air, meaning leaks can accumulate at floor level and displace oxygen.

It explained that this can cause unconsciousness or death if unchecked.

The company said that the Confined Spaces Regulations 1997 classify cellars as confined spaces because of the potential for hazardous atmospheres.

It reported that employers must test air quality before entry, monitor it while occupied, and ensure portable gas detectors are provided.

It added that the Health and Safety Executive lists CO₂ as a substance hazardous to health under COSHH regulations.

According to Crowcon, this places obligations on employers to assess hazards, provide ventilation and detection, and train staff.

It noted that legal duties under the Health and Safety at Work etc. Act 1974 and related regulations include ensuring gas detection is in place where risks exist.

The role of portable gas detectors

Crowcon explained that portable gas detection equipment offers real-time monitoring for workers in cellars, basements, and confined areas.

It reported that wearable devices can raise immediate alarms when leaks occur, helping staff evacuate safely.

The company added that these devices fill a gap left by compliance frameworks by giving direct, individual protection to users.

It stated that in practical use, portable detection can help prevent incidents from escalating and support continuity of operations.

It commented that this capability provides an additional safeguard alongside existing regulatory requirements.

Safety during peak trading seasons

Crowcon reported that as the hospitality sector moves into Halloween and Christmas, proactive safety measures are increasingly necessary.

It said that portable gas detection allows operators to demonstrate safety responsibility while protecting staff.

The company stated that portable devices help ensure confidence for workers each shift.

It added that detectors support business continuity and signal duty of care to regulators, insurers, and customers.

It noted that this positions portable detection as a practical option for operators during busy trading periods.

Relevance for fire and safety professionals

The use of portable gas detection in hospitality venues highlights the role of personal protective technology in confined environments.

The case studies referenced by Crowcon illustrate how undetected leaks have led to fatalities in the past.

For fire and safety professionals, this demonstrates the importance of regulatory compliance and real-time monitoring when advising or supporting businesses.

It also shows how portable detection devices can supplement fixed systems in complex, high-risk sites.

Gas detection highlighted as safety priority in UK hospitality: Summary

Crowcon has reported that CO₂ and mixed-gas systems used in hospitality pose ongoing risks.

It said that past incidents have included fatalities caused by CO₂ leaks.

The company explained that leaks are particularly dangerous in confined or poorly ventilated areas.

Ed Clapham of Crowcon said that gas detectors play a role in protecting staff, contractors, and customers.

He added that exposure can reduce oxygen levels below safe thresholds, impairing alertness and coordination.

Crowcon said that UK regulations classify cellars as confined spaces, requiring testing and monitoring.

It reported that COSHH regulations identify CO₂ as hazardous and place obligations on employers.

The company explained that portable gas detectors provide real-time monitoring for individuals working in confined areas.

It added that detectors support compliance, evacuation, and operational continuity.

Crowcon said that portable detection becomes particularly relevant in busy trading periods.

It concluded that portable devices provide staff with confidence and demonstrate safety responsibility.