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Tank cleaning and disinfection

The Importance of Building System Cleaning and Disinfection – Hospitality

Tank cleaning and disinfection: Legionnaires’ disease, a potentially fatal form of pneumonia caused by Legionella bacteria, first gained notoriety in 1976 following an American Legion Conference in Philadelphia. Since then, it has remained a significant public health concern, particularly in buildings with intricate water systems. Legionella bacteria thrive in water sources, especially when conditions allow for their growth and dissemination. While Legionnaires’ disease cannot be transmitted from person to person, it poses a serious threat, especially to high-risk groups such as males over 45 years old, heavy smokers, alcoholics, and individuals with weakened immune systems or underlying health conditions like kidney disease or cancer.

Statistics suggest that Legionnaires’ disease affects thousands annually, with a significant portion linked to contaminated building water systems. Understanding the causation chain is crucial: Legionella must infiltrate a water system, proliferate under favourable conditions, disseminate in aerosol form, and ultimately be inhaled by susceptible individuals. Factors such as nutrient availability, temperature, and time play critical roles in facilitating Legionella growth and dissemination.

To mitigate the risk, effective cleaning and disinfection of hot and cold water systems are paramount. The Health and Safety Executive (HSG 274 p42) recommends controlling Legionella growth by keeping water systems clean and free from contaminants and corrosion, which can serve as nutrient sources for bacteria. Routine inspections and cleaning of water tanks become imperative, especially upon detecting debris or contamination, to ensure the health and safety of building occupants.

Different water systems require different approaches. Gravity tank-fed systems, frequent in commercial properties, often employ Glass Reinforced Plastic (GRP) tanks. These tanks, while durable, may deteriorate over time, manifesting issues like stress cracking or rusty bolts. Thorough inspection and maintenance protocols become essential in preserving the integrity of these systems.

Cleaning and disinfection methods vary, with chemical disinfection being a primary recommendation. Pre-disinfection may be warranted in certain scenarios, such as the presence of contaminants like dead organisms or pigeon excrement in the tank. Ensuring the thorough distribution of disinfectant to all outlets within the system, including showers and taps, is paramount to achieve comprehensive disinfection and mitigate risks effectively.

Understanding when to clean and disinfect tanks is equally crucial. Regular monitoring and risk assessments should prompt cleaning if the tank contains debris, sludge, scale, or traces of vermin. Tanks storing drinking water should undergo annual cleaning, and any alterations to the tank or pipework systems should prompt thorough disinfection to prevent contamination. Refer to page 26 of the HSG274 for easy to follow guidance https://www.hse.gov.uk/pubns/priced/hsg274part2.pdf

Understanding the Varieties Found Within Buildings

Within the intricate framework of building infrastructure, water systems play a pivotal role in ensuring the smooth functioning of various operations. Understanding the diverse types of water systems found within buildings is crucial for effective maintenance and management.

Systems Fed Directly from the Mains:

These systems draw water directly from the public water supply, providing a convenient and reliable source of water for building occupants.

Gravity Tank-Fed Systems:

Gravity tank-fed systems involve tanks positioned above the outlets, typically located in attic spaces or dedicated tank rooms on the roof. In tall buildings or areas with insufficient mains pressure, gravity tanks ensure a steady flow of water by utilizing gravity to create pressure. Boosted water systems, which employ pumps to strengthen water pressure, are a common feature in gravity tank-fed setups.

GRP Tanks – Glass Reinforced Plastic:

Among the most frequent types of tanks found in commercial properties, GRP tanks boast durability and versatility.

Despite their durability, sectional GRP tanks may develop leaks after being drained and refilled. This occurs due to the water pressure inside the tank, which pushes the seals together. Leaks typically manifest at the mating face between the walls and base panels, requiring prompt attention to prevent water wastage and potential damage.

Managing Tank Deterioration:

Stress Cracking:

An increasing issue observed in Glass Reinforced Plastic (GRP) tanks is stress cracking. These cracks typically manifest internally on the lip of panels and signal the end of the tank’s life cycle. Stress cracking compromises the structural integrity of the tank, leading to potential leaks upon refilling. While tank lining may temporarily address small leaks, the ultimate solution lies in tank replacement to prevent further damage and ensure long-term reliability.

Rusty Bolts:

Rusty bolts within GRP tanks often indicate underlying issues stemming from incorrect installation practices or exposure to disinfectants like chlorine. Incorrect bolt usage, where galvanized bolts intended for dry external flanges are mistakenly used for wetted surfaces, can accelerate rust formation. Additionally, chlorine exposure during disinfection processes can rapidly corrode stainless steel bolts. Thorough rinsing of surfaces above the water line post-disinfection is crucial to mitigate corrosion risks.

Capacity and Design:

Understanding the capacity and design of tanks is fundamental for maintenance personnel. Generic terms like “50-gallon tanks” denote common domestic plastic tanks, which come in various designs, some easier to clean than others. Poorly fitting lids and insulation can exacerbate issues like airlocks, affecting the tank’s functionality. Ensuring accurate measurement of tank capacity and awareness of design nuances are crucial for effective maintenance planning and execution.

At Dantek, we specialize in all Legionella control services, including tank cleaning and disinfection tailored to the hospitality industry. For further inquiries or assistance, please don’t hesitate to contact our sales team at 01454 417920 or via email at sales@dantek.co.uk.

https://dantekenvironmental.co.uk/services/water-hygiene/water-tank-cleaning/

 

 

 

 

The Importance of Annual Cold-Water Storage Tank Inspections

Annual inspections of cold-water storage tanks are not just a regulatory requirement but also a crucial aspect of maintaining water hygiene standards within your establishment. These inspections are vital to ensure both the structural integrity of the tank and the quality of the water it holds, particularly during warmer months when temperature control becomes paramount.

To adhere to these regulations, it is imperative to enlist the expertise of a trained Water Hygiene Technician. These technicians are equipped to thoroughly inspect the cold water storage tank, meticulously documenting its condition in the monitoring log book. Should any discrepancies be found, they follow established protocols, escalating issues as per the chain of command outlined in the control scheme, and executing remedial actions promptly to ensure the tank’s continued functionality within appropriate timelines.

During the inspection process, both the interior and exterior of the tank are inspected, along with the quality of the water it contains. Key points of assessment include ensuring a tightly fitting and undamaged lid, the presence of insect and vermin screens on overflow and warning pipes, proper lagging to maintain water temperature, absence of biofilm or stagnation signs on the water surface, and correct positioning of inlet and outlet to prevent stagnation.

At Dantek, we specialize in conducting comprehensive tank inspections at your hospitality site, whether as a one-time service or as part of a water hygiene monitoring contract. Our process is streamlined through our cloud-based electronic logging system, providing you with easy access to inspection outcomes and recommendations.

Here’s a glimpse of what our inspection entails:

  • External and internal condition documentation through photographs
  • Recording tank dimensions and insulation integrity
  • Verifying proper inlet-outlet positioning
  • Assessing lid tightness and overflow screen adequacy
  • Ensuring sufficient access for maintenance and cleaning
  • Checking operability of isolation valves and inlet valve condition
  • Monitoring water temperatures at different points
  • Evaluating sediment coverage at the base of the tank
  • Detecting the presence of biofilm and ensuring water clarity
  • Identifying any leaks or signs of leakage
  • Verifying correct labeling of the cold water storage tank
  • Providing detailed recommendations for further action, including clean and disinfection if necessary

Our goal is to not only meet regulatory requirements but also to safeguard the health and safety of your guests and staff by maintaining optimal water hygiene standards. Should our inspection reveal the need for clean and disinfection, we are prepared to provide you with a comprehensive quote for the required work.

Contact Us Today!

Do you have any questions or need a quotation? Don’t hesitate to reach out to our friendly sales team today. Give us a call at 01454 417 920 or email at sales@dantek.co.uk. You can also visit our website at www.dantek.co.uk for further details.

Water Supply Safety – RAAC in UK Schools

Water Supply Safety: In the UK, some buildings stand as a testament to the past, serving as reminders of construction techniques that have since become obsolete and hazardous. Among these structures are those built using a type of concrete known as Reactive Aggregate Attack Concrete (RAAC), colloquially referred to as “crumbly concrete.” This outdated building material has raised significant safety concerns, particularly in the realm of education, where hundreds of schools across the UK used RAAC in their construction. In response to fears of potential collapses, some schools have been shut down, and temporary accommodation huts have been erected. Amidst these concerns, Dantek wants to offer guidance and support to ensure the safety of water supply systems in these vulnerable buildings.

School Buildings and Safety Fears

One of the most pressing concerns surrounding RAAC structures in the UK is their prevalence in school buildings. Many educational institutions unknowingly used RAAC in their construction, posing a significant risk to the safety of students and staff. In response to these safety fears, some schools have taken the difficult step of shutting down their facilities, disrupting the education of countless students.

Temporary Accommodation: A Vital Solution

With schools needing to ensure the safety of their students and staff, temporary accommodation huts have become a necessary and practical solution. These huts provide a secure environment for teaching and learning while allowing for essential repairs or reconstruction to take place. However, this is just a temporary measure. The long-term solution lies in the complete overhaul of RAAC-affected buildings.

Dantek: Ensuring Safe Water Supply

One critical aspect of maintaining Water Supply Safety of buildings, whether temporary or permanent, is ensuring the safety of water supply systems. Here at Dantek, we offer trusted water treatment services.

Water Supply Safety – Disinfection: A Necessity

Dantek understands the importance of maintaining clean Water Supply Safety in systems. When dealing with construction projects, disinfection of water supply pipes is a crucial step to ensure that the water is safe for consumption. According to guidelines outlined in BS 8558 and the Water Supply (Water Fittings) Regulations 1999, disinfection is necessary under various circumstances:

  • Installing new supply pipes unless it’s a private dwelling occupied by a single family.
  • Carrying out major extensions or alterations, unless it’s a private dwelling occupied by a single family.
  • Working on underground pipework, excluding localized repairs or insertion of junctions.
  • When a system has not been regularly flushed or used, or when contamination is suspected due to factors like sewage, animals, or human interference.

What you can expect from Dantek’s water treatment services:

Our services encompass a thorough flush and disinfection process that goes the extra mile in ensuring your Water Supply Safety and compliant. The procedure includes a balanced flush of the entire system to displace sediment, scale, and debris towards the outlets, followed by meticulous disinfection of cold-water and domestic hot water pipework to all outlets. To guarantee the effectiveness of the disinfection, we perform repeated flushes using town mains water until disinfectant levels meet the stringent standards outlined in BS8558.

One of the key elements of our service is the assessment of system water quality. We take representative potable water samples and entrust them to a UKAS accredited laboratory for in-depth microbial analysis. The results, which confirm the microbiological quality of the system water, are then compiled into a comprehensive laboratory report and certificate. This documentation serves as tangible proof of the thorough work we’ve carried out, giving you the confidence and assurance that your water supply is both safe and compliant with industry regulations.

Dantek’s Expertise and Reassurance

Our extensive experience in water treatment services is invaluable in these uncertain times. We can provide expert guidance and support to ensure that water supply systems are compliant with regulations and safe for use. Beyond that, we offer reassurance to those responsible for the safety of these buildings, providing peace of mind that they are doing everything possible to protect the people who rely on their water systems.

We’re here to support you in navigating the challenges posed by RAAC structures and to ensure that Water Supply Safety concerns are addressed with the utmost care and expertise

Please feel free to reach out to us if you have any questions or concerns regarding chlorination’s in your school, college, or university. We are here to provide assistance and support. You can contact us at 01454 417 920 or email us at sales@dantek.co.uk.

Water Hygiene and Treatment for Education – Dantek Ltd

Water Hygiene and Treatment for Education: In the diverse world of education, where safety and quality are paramount, ensuring the well-being of students and staff is of utmost importance. From the classroom environment to the water systems that support daily activities, each detail plays a significant role.

Who is Dantek?

We distinguish ourselves as more than just a typical water treatment company. Our unwavering dedication to Water Hygiene and Treatment services throughout the South West and West Midlands region positions us as a reliable ally in maintaining the utmost water safety standards. Our mission is straightforward: to assist educational institutions in complying with ACOP L8 and HSG274 regulations while efficiently managing water systems securely and cost-effectively.

Why Choose Dantek for Education?

In an industry where transparency, compliance, and expertise are crucial, we offer a winning combination that distinguishes us from the rest:

  • Transparent Pricing: Our pricing structure is clear and concise, ensuring that you receive detailed quotes promptly, enabling you to make well-informed decisions swiftly.
  • Legionella Control Association (LCA) Membership: We have been a proud member of the LCA since 2007, ensuring that our clients align with the latest HSE guidelines and industry best practices.
  • Customer-Centric Approach: We don’t just provide a service; we become your partners in water safety. By actively listening to your concerns and requirements, we leverage our extensive experience to offer tailored solutions for common water-related challenges in educational settings.
  • Efficient Scheduling: Our dedicated office team collaborates with clients to schedule service appointments with minimal disruption to educational operations and end users.
  • ISO9001 BSI Accreditation: Our commitment to quality is unwavering. We proudly hold an ISO9001 BSI accreditation, reaffirming our dedication to maintaining the highest industry standards.
  • Expert Technicians: Our field-based technicians undergo an extensive 11-part training program, developed in-house over the last 20 years. This ensures that the professionals handling your water systems are highly skilled and knowledgeable.
  • Elegant Electronic Logbook: Our web-based electronic logbook provides real-time reports of non-compliance. This tool enhances our ability to efficiently manage our contracts while maintaining affordability.

At Dantek, we specialise in delivering water hygiene services tailored specifically for educational settings with a focus on Legionella control. Our comprehensive range of Water Hygiene and Treatment services includes:

  • Legionella Risk Assessments: Drawing upon our wealth of experience, we are experts in conducting Legionella risk assessments for educational facilities. Our assessments encompass detailed asset registers, AutoCAD drawings, system condition evaluations, and actionable recommendations to ensure compliance.
  • Water Hygiene Monitoring: Our highly trained technicians perform regular temperature checks, tank inspections, and other essential assessments to guarantee that your systems consistently adhere to the highest standards.
  • Microbiological Monitoring: We exclusively use UKAS-accredited laboratories and provide comprehensive biological monitoring programs that encompass Legionella testing and potable water testing. Our team of experts not only performs these tests but also analyses the results, offering insights and recommendations.
  • Cleaning and Disinfection: In full compliance with HSE guidelines, our comprehensive cleaning and disinfection packages ensure the cleanliness and safety of your systems. We tailor our approach to the specific needs of your site, employing dedicated professionals and state-of-the-art resources.
  • Showerhead Cleaning and Disinfection: Our experienced team specializes in efficient and thorough cleaning and descaling services for showerheads, ensuring a safe and hygienic environment.

Additional Services: Beyond our core offerings, we provide a range of other services, including calorifier servicing, TMV servicing, water treatment, steam boiler servicing, softener servicing, chlorine dioxide units, and much more, to meet the diverse needs of educational institutions.

Don’t simply take our word for the level of service, expertise, and confidence our team offers. Below, you’ll find three testimonials from educational establishments that share their experiences with us.

5 Star Reviews

I have worked with Dantek on our campus at Birmingham City University for the last Six years. They have been our sole provider of water treatment servicing for the last four years. I cannot recommend them highly enough. They demonstrate to me daily my current compliance across the campus on their own bespoke compliance software which is a huge advantage. The management of the contract is seamless and regular meetings are delivered in a professional and concise manner.

All of the employees have vast knowledge which we have been able to draw on and continually improve the service they provide to us.

To sum up. Thank you Dantek for keeping us compliant and safe.

David Phillips, Estates and Facilities
Birmingham City University
As the Compliance Manager at Dean Close School, I am delighted to share my experience with Dantek. In a word, our experience with their team has been nothing short of amazing.
From the moment we first engaged with Dantek, their commitment to delivering excellent services became evident. The Head of Operations, Carol, stands out as an extraordinary leader. Her unwavering dedication and profound expertise have consistently surpassed our highest expectations. Not only is she exceptionally skilled in her role, but she is also an absolute joy to collaborate with. Within the operations team, particularly Sarah, we find remarkable problem solvers who skilfully navigate the particulars of a live school environment.
The Sales Team’s swiftness in delivering quotes is truly remarkable, showcasing their unwavering dedication to efficiency and responsiveness. This exceptional level of service has significantly optimised our workflows, enabling us to effortlessly arrive at well-informed decisions. Fiona, in particular, excels at ensuring our school stays on top of its requirements and maintaining regular communication to ensure our well-being.
Dantek’s technicians are a remarkable group. They are not only polite but also incredibly knowledgeable and technically excellent. Their expertise in the field is evident, and it’s clear they take pride in their work. We have complete confidence in their ability to address any issue promptly and effectively.
The Senior Leadership Team at Dantek has consistently shown that they have the best interests of their clients at heart. They are responsive, accommodating, and genuinely care about our needs and concerns. It’s reassuring to know that we have such a supportive team working alongside us.
A standout element that has significantly enhanced our compliance management is Dantek’s electronic logbook. It boasts a user-friendly interface and a readily accessible home screen, making it a breeze for us to effortlessly monitor our compliance status. This advancement has greatly streamlined our daily operations, which is essential as we oversee five schools and six nurseries situated across seven dispersed sites.
In conclusion, I would highly recommend Dantek to other educational settings. Their exceptional service, outstanding team, and unwavering commitment to excellence have made a significant positive impact on our operations at Dean Close School. Working with Dantek has been a game-changer, and we look forward to continuing this partnership in the future.
Mick Seamarks Compliance Manager
Dean Close Foundation
Dantek has been our trusted water hygiene partner for an extended period of time. They work with BCU to manage legionella control in a large and varied built estate. We have found Dantek to be an excellent company to work with. The on-site technicians are professional, courteous, and diligent, they take pride in the service they provide when on-site. This approach is also reflected in the service provided by the back office and management team who meet regularly with BCU to collaboratively manage our systems together. They provide a first-class service demonstrating knowledge, customer service and a willingness to always find new ways to improve the services they provide. The data provided by the online portal allows us to ensure we are compliant, and we can respond to any actions that are required in a timely manner.
Having worked with many Water Hygiene companies in my past roles I can say with confidence Dantek is the best company I have encountered in this sector and highly recommend them.
Andy Moseley MIWFM
Birmingham City University

Our dedication to compliance, customer satisfaction, and innovative technology positions us as a valuable partner in creating a safer educational environment. With a dedicated team, a track record of excellence, and a user-friendly electronic logbook, we’re transforming how educational institutions manage water systems. Learn more about our services and how we can enhance the safety of your educational establishment by visiting our website at http://www.dantek.co.uk, sending us an email at sales@dantek.co.uk, or giving us a call at 01454 417 920.

 

Choose Dantek for Water Hygiene Services this festive season!

We hope that you have enjoyed the informative blogs we’ve been sharing for the retail industry since October. From L8 Lite assessments to water hygiene monitoring and microbial sampling, our aim has been to provide valuable insights and guidance to help businesses thrive in the ever-evolving retail Christmas wonderland.

Dantek: Your Water Hygiene Partner

Dantek is not your run-of-the-mill water treatment company. With an unwavering commitment to water hygiene and treatment services across the UK, we are the reliable partner you need to maintain the highest standards for water safety. Our mission is clear: to help businesses comply with ACOP L8 and HSG274 regulations while efficiently managing water systems in a safe, cost-effective manner.

Why Choose Dantek for Retail Water Hygiene Services?

In an industry where simplicity, compliance, and expertise matter the most, Dantek offers a winning combination that sets us apart:

  1. Transparent Pricing: Our pricing structure is straightforward, ensuring you receive detailed quotes in record time, enabling quick and informed decisions.
  2. Legionella Control Association (LCA) Membership: Dantek has proudly been a member of the LCA since 2007. This affiliation guarantees that our clients are aligned with the latest HSE guidelines and industry best practices.
  3. Customer-Centric Approach: We’re not just service providers; we’re your partners in water safety. By actively listening to your concerns and needs, we leverage our extensive experience to offer tailored solutions for the common water-related challenges faced in buildings.
  4. Efficient Scheduling: Our dedicated office team collaborates with clients to ensure service appointments are scheduled with minimal disruption to your operations and end users.
  5. ISO9001 BSI Accreditation: Our commitment to quality is unwavering. Dantek proudly holds an ISO9001 BSI accreditation, reinforcing our dedication to maintaining the highest industry standards.
  6. Expert Technicians: Our field-based technicians undergo a rigorous 11-part training program, developed in-house over the last 20 years, ensuring that the professionals handling your water systems are highly skilled and knowledgeable.
  7. Elegant Electronic Logbook: Managing multiple-site contracts can be complex. That’s why we’ve developed a user-friendly, web-based electronic logbook that offers real-time reports of non-compliance, enhancing our ability to efficiently manage large multi-site contracts while ensuring affordability.

Dantek Services for Retail

At Dantek, we specialize in providing water hygiene services with a focus on Legionella control. Our comprehensive range of retail services includes:

  1. Tailored Legionella Risk Assessments: Our wealth of experience makes us experts in multi-site Legionella risk assessments. We provide detailed asset registers, AutoCAD drawings, system condition evaluations, and actionable recommendations for compliance. Don’t forget we also offer an L8 lite version which is specifically designed for sites without significant plant items like calorifiers and tanks, which are commonly found in larger establishments. This streamlined assessment is particularly valuable for retailers with mains-fed systems.
  2. Water Hygiene Monitoring: Our highly trained technicians conduct regular temperature checks, tank inspections, and more, ensuring that your systems adhere to the highest standards.
  3. Microbiological Monitoring: We offer UKAS-accredited laboratory testing for biological monitoring programs, including Legionella testing and potable water testing. Our experts interpret results and provide actionable insights.
  4. Cleaning and Disinfection: Complying with HSE guidelines, our complete cleaning and disinfection packages guarantee your systems are clean and safe. We utilize site-specific methods, dedicated professionals, and state-of-the-art resources.
  5. Showerhead Cleaning and Disinfection: Our experienced team provides efficient and thorough cleaning and descaling services for showerheads.

Additional services include chlorine dioxide maintenance, softener servicing, calorifier inspections, closed-system water treatment, and much more.

In the dynamic world of retail, where every customer interaction matters, Dantek offers a crucial layer of support through its expert water hygiene and treatment services. Our commitment to compliance, customer satisfaction, and innovative technology positions us as a valuable partner in creating a safer working environment.

This Christmas season, let Dantek be your contractor in ensuring that every aspect of your retail business, including water hygiene, is in top-notch condition. With a dedicated team, a track record of excellence, and a user-friendly electronic logbook, we’re transforming how the retail industry manages water systems.
Learn more about our services and how we can help your business thrive by visiting our website at www.dantek.co.uk, sending us an email at sales@dantek.co.uk, or giving us a call at 01454 417 920.
Wishing you a Merry Christmas and a prosperous New Year filled with joy and success!

Risk mitigation in the sports industry

Coming Soon: Informative Blogs on Legionella Risk Mitigation in the Sports Industry!

Risk mitigation Introduction:

Attention, professionals in the sports industry! We are thrilled to announce some exciting news. Starting next week, we will be dedicating our efforts to the sports industry as part of our quarterly campaign. Our primary focus will be on addressing critical topics related to Legionella risk mitigation in sports facilities. We aim to offer valuable insights and practical advice to assist you in maintaining a safe and hygienic environment for athletes, staff, and visitors.

Managing Legionella poses unique challenges within the sports industry. To cater to these specific needs, Dantek has developed a comprehensive range of specialized water hygiene solutions tailored exclusively for sports clubs and facilities. Our team of expert engineers understands the sensitivity of both athletes and staff, and they possess extensive experience in managing water systems in stadiums, training grounds, and other sport facilities.

Risk mitigation – Why It Matters:

Legionella bacteria can pose serious health risks if not properly managed. By staying informed about the potential hazards and adopting effective preventive measures, you can significantly reduce the likelihood of Legionella contamination in your sports facility. Our blogs will empower you with the knowledge and resources needed to safeguard your facility and maintain compliance with regulatory standards.

What to expect:

In our upcoming blog series on Legionella risk management in the sports industry, we will cover a wide range of essential topics. Our goal is to provide valuable insights and practical guidance to help you effectively manage the risks associated with Legionella in large water systems found in sports facilities. Here are some of the topics we will delve into:

BLOG 1 Chlorine Dioxide: Exploring the benefits and proper use of chlorine dioxide as a disinfectant in water systems to control Legionella growth.

BLOG 2 Irrigation Systems: Understanding the potential risks associated with irrigation systems and implementing preventive measures to mitigate Legionella contamination.

BLOG 3 Recycled Water Systems: Examining the challenges and best practices for managing Legionella and microbial risks in recycled water systems.

BLOG 4 Water Hygiene Monitoring: Highlighting the significance of regular monitoring to detect and address any potential Legionella issues promptly.

BLOG 5 Responding to Positive Legionella Results: Taking Action on Positive Legionella Results: A Guide for the Sports Industry

BLOG 6 Flushing of Infrequently Used Outlets: Understanding the importance of regularly flushing infrequently used outlets to maintain water quality and minimize Legionella growth.

BLOG 7 Legionella Risk Assessments: Discussing the importance of conducting comprehensive Legionella risk assessments to identify potential hazards and develop effective control measures.

BLOG 8 Training and Competence: Safeguarding lives in the sports sector through legionella eductaion

BLOG 9 Record Keeping: Electronic log book, the solution for the busy sports industry

BLOG 10 Ensuring water safety in the sports industry: The importance of a comprehensive written scheme of control

Join us next week as we launch our highly anticipated blog series on Legionella risk management in the sports industry. Stay updated and gain valuable insights by following our LinkedIn page, where we will be sharing these informative blog posts. Don’t miss out on expert advice and practical guidance to help you protect against Legionella contamination in your sports facility’s water systems. Follow us on LinkedIn and stay informed as we explore essential topics.

Contact the Dantek team today https://www.dantekenvironmental.co.uk/contact-us/. You can give us a call at 01454 417 920 or send an email to sales@dantek.co.uk. We’re here to assist you and answer any inquiries you may have.

Children Washing Hands At School

Legionella control case study at a large boarding school

Dantek have provided legionella control services to Marlborough College for a number of years, below is a case study about how we work together to ensure ACoP L8 compliance and the safety of the students and staff.

Since its establishment in 1843 by a group of Church of England clergymen at the Castle Inn at Marlborough, Marlborough College has never been frightened of change. 

In its recent history, numerous academic initiatives have been fostered at the College including, Business Studies, SMP Maths, Combined Science, Pre-U examination syllabuses and the teaching of Arabic and Chinese. In 1968 Marlborough was one of the first of the traditional boys’ boarding schools to admit girls into the Sixth Form.

In 1989, the College became fully co-educational with the admission of girls into the Lower School and with the establishment of the first of the all-girl boarding houses.

Today the College caters for 936 pupils (of which just over 40% are girls) and the great majority of whom (98%) are boarders.  The remaining four “Out-College” houses accommodate 13-16-year-old boys, plus a mixed Sixth Form of both girls and boys.

School size: 201-500 employees

Based at: Marlborough, Wiltshire

The support Dantek provides

As a school, Marlborough College provides care for a large group of students most of which board on site, this means that they must adhere to strict health and safety guidelines. One of these areas is the need to protect students and staff from potential Legionella infection. Dantek has worked with the school for many years ensuring they comply with all regulations thus providing a safe environment for their students to thrive in.

As part of their on-going activity, Dantek engineers monitor the water quality, carry out remedial work and run regular testing and Legionella risk assessments. The College compliance team benefit from using Dantek’s electronic logbook which saves time and helps them keep on top of the various requirements. Dantek has provided a long-standing service to the college and act as part of their team which supports the quality of environment and interaction required by the College.

What does the client say?

We caught up with Kelvin Neale, M&E and Energy Manager at Marlborough College to find out how he views working with Dantek;

How did you hear of Dantek?

I have worked at Marlborough College for 8 months so Dantek were already in place when I joined. However, I did work with Dantek through another employer. I can certainly say that Dantek are known for their sound reputation in the industry.

What are the most important elements you look for in a contractor?

The most important elements for me are timely communication and a conscientious, effective manner. Due to the nature of the work Dantek provide, I also look for clear paperwork and accurate paper trial. We do consider the price, but it is not the only factor. When it comes to compliance, we must make sure we are choosing the right supplier who has the knowledge and systems which we require.

What do you like about working with Dantek?

I am very happy with their work in general. Three things stand up for me in particular:

  1. All engineers are professionals and knowledgeable, DBS checked and employed directly. They will always provide a service that goes beyond their contractual requirements and nothing we ask is ever an issue.
  2. The level of knowledge and expertise the company holds is impressive, they clearly know their stuff. I am also very impressed with the fact that on the rare occasion when they come across something they don’t know; they will go away to research for the right solution. It really demonstrates how competent they are and allows me to trust their advice implicitly.
  3. The electronic logbook is helpful and saves me a lot of time. It means I always have the data I need available to me and we never miss any tests and activities we need to complete.

How do they stand out against the competition?

As mentioned before, Dantek has a strong reputation in the industry. I think the main elements that make them stand out for me are as follows:

  1. The concise and timely completion of every job
  2. The electronic logbook which allows me to stay on top of compliance requirements, documentation and paperwork
  3. The level of knowledge and expertise they demonstrate about water treatment and legionella control
Marlborough College Case Study (PDF)

 

Clean Cold Water Storage Tank

Why is water tank cleaning important for legionella control?

Ensuring the cleanliness of water tanks is essential for maintaining water hygiene standards. Here are three critical reasons why this practice is paramount:

  1. Eliminating Breeding Grounds for Legionella: Water tanks can become breeding grounds for Legionella bacteria if not properly maintained. Accumulated silt, scale, and sediment in tanks provide nutrients for bacteria growth. Additionally, without proper screening, organic matter like leaves or small rodents can contaminate the tanks, further exacerbating the issue. Cold water storage tanks, often overlooked, may harbor these contaminants unseen.

  2. Preventing Water Stagnation: Stagnant water fosters the growth of Legionella bacteria. Scale buildup can trap nutrients and form a biofilm, acting as a barrier to disinfectants. Regular draining and physical cleaning of water tanks help remove scale, sludge, and biofilm, thereby preventing bacterial proliferation.

  3. Meeting Legal Requirements: Compliance with legal regulations regarding the inspection, cleaning, and disinfection of water tanks is mandatory. Maintaining thorough records of these activities demonstrates proactive measures to prevent diseases like Legionnaires’ disease.

At Dantek, we offer comprehensive tank cleaning and disinfection services conducted by our in-house team of trained professionals. Detailed information, including photographs, is meticulously logged in a cloud-based compliance system, provided at no additional cost. This ensures easy access to crucial data concerning the condition of your storage tanks, facilitating prompt action when necessary.

Please contact sales@dantek.co.uk to see how it could work for you.

Recently we carried out a clean and disinfection of a large cold water storage tank, below are photos of before and after the cleaning process.  It is clear in figure 1 there was a high level of sediment visible in the water tank which needed to be removed to reduce the risk of legionella bacteria.

Image of a cold water storage tank before it is cleaned and chlorinated.
Visible sediment prior to cleaning and disinfection.
Before and after photo of a large cold water storage tank being cleaned and disinfected.
after cleaning and disinfection.

http://www.dantek.co.uk

Checking Temperature On A Calorifier

5 key issues to consider about Legionella and care homes

Legionnaires’ disease can cause serious illness and, in some cases, even death if it is not managed correctly.  It is contracted by breathing in droplets of air containing Legionella bacteria.  Legionella bacteria occurs naturally and enters the water system through the mains water supply.  Airborne water droplets are created by water systems such as showers, spa baths, hydrotherapy baths and hot and cold-water services such as spray taps.

While anyone could become infected there are some groups who are more susceptible, and these include the elderly and those with existing underlying health conditions.  Therefore, it is so important for Care Homes to act and put in place a robust management system and practical solutions to protect anyone in their care who may be at risk from the disease.

There are no known cases of Legionnaires’ disease from the natural environment, this is because it is only in man-made water systems where the conditions are right for the bacteria to proliferate.

Earlier this year the private care provider BUPA was fined £3m for failing to prevent and control an outbreak of Legionnaires’ disease when very sadly a resident died. Click on the link below to read more: https://www.healthandsafetyatwork.com/legionnaires-disease/bupa-kenneth-ibbetson

Checking temperature on a calorifier
Checking temperature on a calorifier

Where to start?

Controlling legionella in nursing and residential care homes starts with a legionella risk assessment of the hot and cold-water systems to ensure a scheme is put in place to control the risk.  Temperature is the usual method of control with systems operated at the required temperatures to prevent legionella bacteria from growing.  Hot water must be stored at 60°c and distributed at 50°c or higher to all outlets.  Thermostatic mixer valves may need to be fitted at outlets to prevent scalding.  Cold water must be stored and distributed at 20°c.

Regular checks need to be carried out in accordance with the risk assessment, some of these checks can be carried out by your own trained site staff or alternatively you can choose an experienced water hygiene company to do these on your behalf.  Whichever option you choose a key factor for compliance is the management of the control scheme which includes correct record keeping.

Cold water storage tanks must be visually inspected at least every 6 months and cleaned as required. The temperature of stored water must be checked to ensure it is 20°c or less.  Showerheads and hoses must be cleaned and descaled quarterly.   Calorifiers (hot water cylinders) need to be drained and internally cleaned and inspected annually.

It is also important to reduce the possibility of stagnating water in a system, so a risk assessment will identify dead-legs in the pipework which will need to be removed.  Little used outlets which can include showers and taps must be flushed weekly or removed to prevent stagnation.

Electronic log book

Using a cloud-based log book is one of the best ways to keep on top of all the monitoring tasks which need to be performed.  Dantek has developed an easy to use cloud-based system which we provide for free to all our contract customers.  The system ensures all your data for legionella compliance is held in one place and can be reported on and scrutinised, so you know where any problems are and what you need to do to rectify them.  For a short demo of the system please email info@dantek.co.uk.

5 key points to consider

  1. Do you have an up to date legionella risk assessment and control scheme in place?
  2. Who is the competent person to manage the risks from legionella?
  3. Are your water systems kept clean, with correct temperature controls and no stagnant water?
  4. Are you frequently checking temperatures remain in line with the ACoPL8 HSE guidance?
  5. Do you have accurate records in place to show external agencies?

Dantek is listed on the Legionella Control Association directory of companies who specialise in the prevention and control of legionella bacteria. Do get in touch if you would like to find out more about our legionella prevention and control plans.

Frequently asked questions about Legionella control

Legionella control FAQ’s

What is Legionnaires’ Disease?

Legionnaires’ disease is a potentially fatal pneumonia caused by inhaling legionella bacteria.  Infection is caused by breathing in small droplets of water contaminated by the bacteria in the lungs.

Legionellosis is the term used to describe the diseases caused by legionella bacteria, of which Legionnaires’ disease is potentially fatal.  Pontiac fever and Lochgolihead fever are the less serious conditions but none the less avoidable if the correct cause of actions is taken.

Who can catch Legionnaires’ disease?

Everyone is potentially susceptible to infection, but some people are at higher risk e.g. those over 45 years of age, smokers and heavy drinkers, those suffering from chronic respiratory or kidney disease, and people whose immune system is impaired.

Where is legionella found?

Legionella bacteria (legionella pneumophila) are common in natural water courses such as rivers and ponds.  Since legionella are widespread in the environment, they may contaminate and grow in man-made water systems such as cooling towers and hot and cold-water services.  Spa baths, Jacuzzi’s and hot tubs are also provide a potential breeding ground for legionella bacteria as they provide optimum conditions for the bacteria to grow and multiply to sufficient numbers for a system to be colonised.

The bacteria thrive at temperatures between 20 and 45 degrees, particularly if there is a supply of nutrients such as rust, sludge, scale, algae and other bacteria.

The risk of legionnaires’ disease is increased if water droplets are produced and dispersed in aerosol form for example in a shower or spa bath.

It is possible to reduce the risk by removing exposure to water droplets and aerosol and by removing the nutrients on which the legionella bacteria feed.  This can be done by keeping water systems clean by cleaning and disinfecting cold water storage tanks and showerheads.

How do I comply with latest HSE guidance?

The current HSE guidance documents for the legionella control are the L8 Approved Code of Practice and the HSG274 Legionella technical guidance.

 

The first thing to do is a Legionella Risk Assessment, to consider the risks from legionella that may affect your staff or members of the public, and then take suitable precautions to control and prevent the risk.

Is it a legal requirement to have a legionella risk assessment?

There is a legal duty for employers and landlords to consider the risk legionella bacteria in buildings under your control or management. You must identify and assess the source of risk i.e carry out a legionella risk assessment. Manage the risk. Put in place measures to control or prevent any risks.  Keep good records to prove you are taking the appropriate action and to show to external agencies you are following the HSE guidance for legionella control.

What can be used to control legionella bacteria?

Temperature is usually used in hot and cold-water systems, by keeping hot water at above 60 degrees and ensuring it is above 50 degrees at the outlets. Cold water should be kept at below 20°c.

There are other methods which can be used if temperature is not an option, such as copper/silver ionisation and chlorine dioxide.  Cooling towers / systems are often treated with biocides.  There are other treatment strategies available such as ultra violet (UV) irradiation.

Do I need to take Legionella samples?

This depends on the risk assessment and control methods being used.  In some circumstances it will be required, however it needs to be done at a UKAS accredited laboratory and will require specialist help.  Dantek can provide advice on sample frequency and locations, and what to do if Legionella is detected.

Routine Legionella testing however is not a requirement in domestic hot and cold-water systems.  It would only be recommended in hot and cold-water systems due to exceptional circumstances where typical control measures are not working.  A full legionella risk assessment would identify the best course of action to reduce the risk.

To get an indication about whether microbial control is being achieved taking a TVC sample (total viable count) will allow the system to be monitored.  TVC samples are normally carried out for cooling towers and spa pools.  For other systems the risk assessment will identify is sampling is recommended.

Where can I get more information?

  • Order a copy of the Approved Code of Practice and guidance Legionnaires’ Disease: The control of legionella bacteria in water systems L8 here »
  • Contact the Water Management Society (WMS) http://www.wmsoc.org.uk/
  • Check out the LCA legionella control association directory of Water Hygiene companies
  • Call Dantek for free expert advice and support about all legionella control issues

What will a legionella risk assessment cost?

The cost will depend on what assets are on your site and how many buildings.  For large sites or multi-site portfolios a site visit by one of our team is the best way to establish exactly how much a risk assessment will cost. However, we are often able to provide a guide price if you know roughly the size and type of building.  For example, how many floors, what it is used for, whether there are any cold-water storage tanks, number of calorifiers and if there are any cooling towers. An asset register of plant and equipment can be very helpful in determining how long the on-site assessment will take and therefore the cost.

One of our team would be happy to talk through on the phone any requirements and enquiries.

What do Landlords need to do about Legionella control?

The law clearly states if you are a Landlord and rent out your property then you have a duty under Health and Safety Law to consider the risk posed by Legionella bacteria. The ACoP L8 (3rd edition) also states Landlords must assess the risk from exposure to legionella to their tenants.

In most cases the risk assessment is simple and straight forward, however for more complex systems or if the Landlord is not able / competent to carry out the assessment they can use a specialist Water Treatment Company like Dantek, to carry out the legionella risk assessments and advise on any actions required.

A simple risk assessment will identify if a system is considered a low legionella risk and no further actions are required other than to review the assessment regularly in case anything changes which may affect the risk for example the water system in the building changes.

Examples of low risk systems include;

  • A small building occupied by people not considered at risk from legionella bacteria.
  • Where there is enough usage of water per day to ensure the entire system is changed at least once.
  • Mains fed cold water supplies the entire system, so there are no cold-water storage tanks.
  • Hot water is fed from combi boilers/ instantaneous heaters or low volume water heater where the hot water is supplied at no less than 50°c
  • The only outlets at the property are toilets and wash hand basins with no showers present on site.

http://www.hse.gov.uk/legionnaires/legionella-landlords-responsibilities.htm

What is meant by the term water system?

A water system includes all plant and equipment for example all the pipework, pumps, cold water storage tanks, valves, showers, water softeners, chillers, heat exchangers, cooling towers, calorifiers, little used outlets and dead legs, humidifiers, air washes, car washes, indoor fountains and water features.

How do I choose a water hygiene company?

Choosing a water hygiene company with the knowledge and skills to manage and control the risk of legionnaires’ disease at your site is made easier with the help of the Legionella Control Association.  The LCA hold a register of members who have met their requirements on an annual basis and have passed their annual audit of systems.

A key factor should be the training of site staff to carry out water hygiene work competently.  A provider will be able to demonstrate how their employees are trained and audited to ensure continual compliance with current standards.

The LCA code of conduct sets out the standard of service a client should expect from a water hygiene provider.  The code requires a Service Provider to set up an appropriate management system for the control of legionella complying with the latest HSE guidance for the control of legionella bacteria.

How many cases of Legionnaires Disease were there last year?

The figures for 2017 are not available yet however in 2016 according to a report by Public Health England, there were 359 cases of Legionellosis cases reported to the National Surveillance Scheme for Legionnaires’ disease in England and Wales.  70.4% of these cases were male and 29.6% female.  With 60% of the cases were reported in people over the age of 60.

57% of cases are thought to have been infected by the organism in the community, with 41% of cases relating to travel abroad and 2% relating to healthcare premises.  Three quarters of those who were diagnosed already had an underlying health condition making them more susceptible to legionnaires’ disease.

The HSE take the view that all these deaths were preventable as it was a man-made system which allowed the bacteria to grow and proliferate to cause an outbreak.  As such the HSE take the view that all businesses should consider the risk from Legionella bacteria and follow the AcoPL8 and HSG274 guidance on the best way to prevent and control it.

Contact us today sales@dantek.co.uk or call 01454 417 920. We are here to help!

 

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