Introducing Smoke Shaft Testing

Smoke shafts systems are commonly installed as part of a fire-engineered approach to safety in high rise buildings. Smoke shafts are an important element of a smoke control system; therefore, the air tightness performance of the shaft is paramount, so the smoke shaft/s need to pass an air test.

If the smoke shaft doesn’t meet the air tightness target (usually 3.8m3/hr/m2) it can have a negative impact to the overall system and cannot be signed off by the fire system contractor and/or Building Control.

Smoke shafts come in all heights; however, the floor print of the shaft is usually stays the same, approx. 1m x 1.5m. heights however can range from 2 stories to over 20 stories.

Diagnostic Smoke Shaft Test Service
We have a massive amount of experience testing all sizes of smoke shafts, we also offer a diagnostic service where the shaft has failed the smoke shaft air test using both smoke testing and thermal imaging to identify air leakage paths within the smoke shaft envelope. On previous projects where the smoke shaft has failed with massive amounts of air leakage, we have used smoke testing and thermal imagining to identify air leakage paths within the envelope of the smoke shaft.

The findings our smoke shaft surveys are collated into a detailed air leakage report, which then allows the client to undertake targeted remedial sealing works resulting in a test pass during the following visit.

Also, Air Pressure Testing is one of the few companies that is both UKAS and ATTMA Level 2 accredited for undertaking air tightness testing to buildings, as well as specialising in smoke shaft air testing. If you would like more information on our smoke shaft (AOV) testing and/or you would like to download our smoke shaft checklist, please contact us at: www.aptsoundtesting.co.uk

Here at APT we have been undertaking AOV smoke shaft testing throughout London and the South-East, on many prestigious projects such as Battersea Power Station, The Imperial War Museum and Claridges and Berkeley Hotel.

What can we do to help you pass your test ?

>>> Smoke shaft survey visits
>>> A UKAS and ATTMA Level 2 testing company
>>> Smoke shaft air test certification
>>> The latest high-powered fan equipment
>>> UKAS calibrated equipment
>>> Smoke testing in the event of an air test failure
>>> Thermal Imaging in the event of an air test failure
>>> Same day quotation
>>> Experienced test engineers
>>> Thousands of air pressure tests undertaken
>>> Fantastic customer satisfaction score

Smoke Shaft Testing Services

Our experienced engineers at Air Pressure Testing have over 10 years in the field of smoke shaft testing, so we know how to help clients to pass their testing and achieve smoke shaft signoff.

For more information on our smoke shaft test services, please contact APT on 07775 623464, or email us at info@airpressuretesting.net.

Comprehensive Noise Assessment Services

If you’ve received a planning condition mandating a plant noise survey in accordance with BS4142, APT Sound Testing is here to assist. Our expertise ensures that industrial noise considerations are thoroughly addressed, helping you navigate the complexities of planning permissions and environmental regulations.

The Growing Importance of Noise Control

Industrial noise is increasingly scrutinized by planning authorities, particularly as the Central Government’s initiatives to redevelop brownfield sites lead to closer proximity between industrial and residential areas. This proximity often raises concerns about noise levels and operating hours affecting the amenity and quality of life for residents.

Local authorities typically regulate noise emissions through planning conditions, requiring effective noise insulation for plant and machinery. Achieving and maintaining sound pressure level limits at site boundaries or nearby sensitive receptors is crucial. Our role involves setting noise level guidelines, ensuring compliance, and recommending mitigation measures when necessary.

Our Methodology

Baseline Noise Assessment

When a new noise source is being introduced to your project, we begin by measuring the existing ambient noise levels in the area over a 24-hour period. This baseline data helps us predict the potential impact of the new noise source. For existing noise sources, we conduct a 24-hour noise measurement with and without the noise source operational to determine its specific impact.

BS4142 Compliance

BS4142 is the standard method for assessing industrial noise in residential areas. It involves measuring the background noise level (LA90) – the level exceeded for 90% of the time – at different times of the day if necessary. Our consultants are well-versed in the procedures and requirements of BS4142, ensuring accurate and reliable assessments.

Detailed Survey and Reporting

We provide comprehensive survey reports that include:

1. Noise Measurement Data: Detailed recordings of noise levels using state-of-the-art Norsonic acoustic equipment.
2. Impact Predictions: Analysis and predictions of the new noise source’s impact based on the baseline data.
3. Mitigation Strategies: Recommendations for noise reduction and insulation measures. These may include noise mapping to visualize the effectiveness of proposed measures in real-life scenarios.

Our assessments cover a wide range of industrial noise sources, including:

• Extraction systems
• Air conditioning units
• Industrial machinery
• Refrigeration units
• General industrial activities

Why Choose APT Sound Testing?

• Expertise: Our team comprises seasoned professionals with extensive experience in BS4142 assessments and industrial noise surveys.
• Advanced Equipment: We utilize the latest acoustic measurement technology to ensure precise and reliable data.
• Comprehensive Services: From initial measurements to detailed reporting and mitigation planning, we offer end-to-end noise assessment solutions.
• Regulatory Compliance: We ensure that your project meets all necessary noise regulations and planning conditions.

Understanding BS4142 Noise Assessments

Introduction to BS4142

BS4142 is a standard methodology used to assess noise from industrial and commercial premises. The assessment focuses on the impact of noise on people living in nearby residential areas, helping to ensure that industrial activities do not significantly harm residents’ quality of life.

Assessment Procedure

The BS4142 assessment involves several key steps:

1. Background Noise Measurement: This is measured using the LA90 parameter, representing the noise level exceeded 90% of the time over a specified period.
2. Operational Noise Measurement: Noise from the industrial source is measured while it is operational. This may involve on-site measurements or modeling based on operational data.
3. Comparison and Analysis: The operational noise level is compared to the background noise level to determine the impact. Adjustments are made for tonal, impulsive, or intermittent noise characteristics.
4. Rating Level Determination: The operational noise level is adjusted to reflect its characteristics and compared to the background noise level to determine a rating level.
5. Impact Assessment: The difference between the rating level and the background noise level indicates the potential impact. A higher difference typically signifies a greater impact on residential amenity.

Mitigation Measures

When the assessment indicates a significant impact, mitigation measures may be necessary. These measures can include:

• Acoustic Barriers: Installing barriers to block noise paths.
• Enhanced Insulation: Improving the sound insulation of buildings or machinery.
• Operational Adjustments: Changing operational hours or procedures to reduce noise during sensitive times.
• Noise Control Devices: Implementing silencers, mufflers, or other noise-reducing devices on machinery.

Reporting and Compliance

The final report details the findings of the noise assessment and any recommended mitigation measures. This report is crucial for demonstrating compliance with planning conditions and ensuring that industrial activities do not adversely affect local residents.

Benefits of Professional Noise Assessment

• Accurate Data: Professional assessments provide accurate and reliable noise data, essential for making informed decisions.
• Regulatory Approval: Demonstrating compliance with noise regulations can facilitate smoother planning approvals.
• Community Relations: Effective noise management helps maintain good relations with the local community by minimizing disruptions.
• Operational Efficiency: Identifying and addressing noise issues can improve overall operational efficiency and reduce the risk of future complaints or legal issues.

Challenges of Industrial Noise Management

At APT Sound Testing, we are dedicated to helping you navigate the challenges of industrial noise management. Whether you are introducing a new noise source or managing existing ones, our comprehensive BS4142 noise assessments provide the data and insights needed to ensure compliance and protect residential amenity.

Reach out to us today to discuss your noise assessment needs and how we can support your project. Our expert team is ready to assist you in achieving your noise management goals.

Contact APT Sound Testing:

• Phone: 01525 303905
• Email: info@aptsoundtesting.co.uk

Let us help you ensure that your industrial activities coexist harmoniously with the surrounding community, fostering a sustainable and noise-conscious environment.

Air Tightness Testing: An In-Depth Examination

Understanding Air Tightness Testing

Air tightness testing is a critical process used to measure the extent of air leakage through a building’s envelope. This test quantifies the amount of conditioned air that escapes or infiltrates through gaps and various leakage pathways in the building fabric. The significance of air tightness testing lies in its impact on energy efficiency: the tighter a building is, the less energy is wasted, resulting in lower carbon emissions.

Additionally, effective air tightness reduces the burden on mechanical and ventilation systems, ensuring optimal performance and energy conservation. Conversely, poor air tightness can lead to up to 50% of heat loss from within a building to the outside atmosphere.

The Utility of Air Tightness Testing

The primary tool used in air tightness testing is the blower door test, which measures the airflow into or out of a building and the corresponding pressure difference across the building envelope. The insights gained from this test are multifaceted:

1. Energy Consumption and Savings: Air leakage necessitates the conditioning of replacement air, either through heating or cooling. By understanding the rate of air leakage, one can estimate energy losses during different weather conditions. This data is crucial for equipment sizing and forecasting operating energy consumption.
2. Identification of Leakage Paths: Often, air leakage occurs through unexpected pathways. Through blower door and smoke testing, it is possible to pinpoint these leakage areas accurately. While some leaks may be large and obvious, many are small but collectively significant. Experienced air tightness engineers can efficiently identify and document these paths during the test.
3. Occupant Comfort: Draughts can significantly affect the comfort of building occupants, whether in residential dwellings or commercial offices. Cold, damp air entering a building can be particularly uncomfortable in extreme weather conditions. There have been instances where workers refused to occupy buildings due to excessive air leakage. For example, a building tested with an air leakage rate of 25m³/hr/m² saw a drastic improvement after sealing identified leakage areas, achieving a rate below 5m³/hr/m², thus resolving occupant complaints.
4. Condensation and Health Issues: Excess air leakage can lead to condensation, as air passing through walls, floors, and ceilings often contains water vapor. These uncontrolled leaks can result in condensation, mold, and rot, posing health risks to occupants. Therefore, it is vital to quantify air passage through the building envelope to control air quality and minimize condensation.
5. Pollutant Ingress: Significant air leakage can introduce polluted outdoor air into a building, especially in areas near main roads, fuel garages, or waste disposal sites. Knowing the extent of air infiltration helps in assessing the risk of outdoor pollutants entering the building. A robust air barrier is essential to control and minimize these pollutants within the building enclosure.

Preparing for Air Tightness Testing

To ensure a successful air tightness test, thorough preparation is crucial. The following criteria should be met:

1. Completion of the Building Envelope: All walls, floors, and ceilings should be fully constructed.
2. Doors and Windows: These must be properly installed and capable of sealing tightly.
3. Electrical Installations: All electrical fittings should be installed and functional.
4. Mechanical Installations: Mechanical systems should also be installed and operational.
5. Sealing Gaps: Any gaps within walls and floors must be sealed.
6. Service Penetrations: All penetrations through the building envelope should be sealed.
7. Kitchen and Bathroom Fittings: These areas should be fully fitted with sealed service penetrations.
8. Ventilation Systems: All mechanical ventilation should be turned off, and grilles should be sealed.
9. Trickle Vents: Vents in windows and doors should be sealed.
10. Fireplaces: These should be sealed.
11. Soil Pipes: Ensure that water is present in soil pipes.
12. Power Supply: A 240V power supply must be available on-site.

Partnering with Experts for Successful Air Tightness Testing

APT Sound Testing possesses extensive experience in understanding the requirements of Approved Document L and conducting successful air tightness tests across various developments in London and the UK. Achieving the desired air tightness target, which is becoming increasingly stringent, requires careful planning and execution.

Design and Construction Guidance

To avoid the risk of a failed air tightness test, early consideration of the air leakage line design within a project is essential. APT Sound Testing offers expert advice and guidance throughout the design and construction stages. By collaborating with clients from the project’s inception, we provide practical solutions to prevent air leakage and ensure compliance with air tightness standards.

Air tightness testing is an indispensable tool for enhancing a building’s energy efficiency, occupant comfort, and indoor air quality. By identifying and addressing air leakage pathways, buildings can achieve significant energy savings and reduce their carbon footprint. Proper preparation and expert guidance are key to a successful air tightness test, ensuring that buildings meet stringent standards and deliver optimal performance.

Working with APT Sound Testing
In is our ongoing policy to listen to our clients’ needs and present them with practical, cost-effective solutions which also takes into account buildability considerations. This means that we offer acoustic consultancy solutions, which encompasses acoustic design and precompletion testing in one easy package.

We use the latest acoustic testing and survey equipment which is UKAS calibrated to the highest standards. By investing in both our personnel and equipment it allows us to offer a more efficient service.

APT Sound Testing strive to provide our clients with a guaranteed quality service every time they decide to get in touch. Our team would love to hear about your latest project, so please get in touch now by telephoning: 01525 303905 or visit our website.