Noise and Vibration Best Practice Update: Summer 2011
Record Breaking Formula One Fan Noise Control Red Bull choose our fan noise control technology to solve extract system noise problems
Making Noise Assessment and Control Self-Financing
Audit the control options rather than assess; use digital noise assessment templates
Acoustic Camouflage - from regular to less than zero complaints...
Innovative, low cost psychological silencing techniques you can use to eliminate noise complaints
Hand-Arm Vibration - New HSE Report Casts Doubt on Manufacturers' Data...
Issues with both supplier declared values issues and correlation with real world field data
New Construction / Demolition / Infrastructure Noise + Vibration Course
Record Breaking Formula One Fan Noise Control Problem: an extract system fan drone causing a noise problem. Solution: engineering source control instead of silencers - in keeping with the ethos of Red Bull Technology.
The conventional technique used to reduce fan noise is a large silencer that can reduce the system efficiency and may also require lagging and regular cleaning to maintain performance. Moreover, fitting silencers seemed a long winded process to a company used to the pace of change in Formula One. Red Bull looked for an alternative and found it in our aerodynamic noise control technology.The "magic" inserts were designed, made and installed inside the fan casing inside a pit-stop window of a few hours to dramatic effect. The 218Hz low frequency tone was reduced by a factor of around 1000 (a new record for the technique), completely eliminating the problem at source for the lifetime of the fan, without maintenance and without affecting fan efficiency.
“We felt that there had to be a better way to reduce the fan noise other than by compromising the system efficiency and creating additional long term maintenance” said Terry Brice of Red Bull Technology.“The INVC technique not only produced a fantastic result, but it’s also very satisfying as an elegant engineering solution”.
This is the best available technology for a wide range of fan noise control problems. It is not only faster and substantially lower cost than silencers, but it is usually self-financing due to the improvements in efficiency and reduced energy use compared with conventional silencing.More on fan noise reduction without silencers - or - contact us for more information
Making Noise Assessment and Control Self-Financing
Do you actually need another noise assessment? Would it just tell you what you already know - that you have a noise problem - that is exactly this big...? It is a regulatory requirement that you are not allowed to use PPE long term unless you can prove that noise control is not practical. get an audit of your noise control and risk management options by taking advantage of the very latest technology instead of repeating that assessment - it will be an investment that should pay for itself. More on the Noise Control Audit - or -contact us for more information
If you do need an assessment (big changes or inadequate previous assessments), then use our Digital Noise Assessment (DNA) template to save time and resources and to set a benchmark quality standard for the future. This replaces conventional paper reports with a searchable multi-media resource that is used for all future updates, cutting the time a resources required to keep your assessments up-to-date. More on noise DNA assessment - or - contact us for more information
Acoustic Camouflage reduces complaints to less than zero!
This is an exciting, innovative and low cost solution to a range of difficult environmental noise problems where sound with “character” could cause complaints. Based on research into the subjective response of people to noise characteristics, the Psychological Silencing system uses speakers to generate a diffuse sound field with a sculpted signature that “camouflages” the nuisance features in the noise from the perception of potential complainants. It's a strange experience to encounter sound that you don’t consciously hear making those you found annoying disappear... Installed at Edgware Road tube station during nighttime track maintenance work, it didn't just help to reduce complaints to zero, it also elicited emails from previous complainants complimenting the company on the effectiveness of their noise management. This innovative technique has wide application both for long term or temporary environmental noise problems. Contact us for more information - or - download the technical note here [215kb pdf]
Hand-Arm Vibration - New HSE Report Casts Doubt on Manufacturers' Data...
A new report just issued by the HSE shows that the vibration emission data provided by manufacturers under EN 60745 is generally well below those obtained by HSL for the types of tool assessed. Moreover, the data is also poorly correlated with real world field vibration values. This is further confirmation what everyone ought to know already - that you have to be very careful using supplier data for risk assessment. We know of a number of techniques that suppliers could use to reduce their declared vibration values by as much as 50% whilst still following the test protocols - it's not as if there isn't any commercial pressure to publish low values....
You can download a copy of the paper herehttp://www.hse.gov.uk/research/rrhtm/rr868.htm
We intend to produce a simple summary and guide shortly -contact us here to book a copy
New Construction / Demolition / Infrastructure Noise and Vibration Training Courses
A practical and pragmatic guide to best practice in environmental noise and vibration management from sites and operations that includes the latest techniques and technology. "Great course, very useful for understanding the levels of noise that cause disturbance and for our role in managing environmental issues..." More on training - or - contact us for more information
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noise problem - that is exactly this big...? It is a regulatory requirement that you are not allowed to use PPE long term unless you can prove that noise control is not practical. get an audit of your noise control and risk management options by taking advantage of the very latest technology instead of repeating that assessment - it will be an investment that should pay for itself.
(DNA) template to save time and resources and to set a benchmark quality standard for the future. This replaces conventional paper reports with a searchable multi-media resource that is used for all future updates, cutting the time a resources required to keep your assessments up-to-date.
