Airport Construction and Aircraft Monitoring example application – CR:243/1 case study
Courtesy of Cirrus Environmental
In this application a number of noise monitors were installed to measure the noise from a new international airport both during the construction and also when the airport opened. The noise monitors were located on buildings, in and around the centre of a large city. The Invictus Permanent Noise Monitor was chosen as each location was different and each installation needed custom designed hardware.
The measurement functions and performance provided by the system are the same as for the Semi-Permanent and Portable Noise Monitoring unit.
- Permanent installation in an urban environment
- Proven technology with long term stability & reliablility
- No standard telephone lines available
- Remote data download over GSM to allow for reporting & data analysis
- Low power consumption to minimise running costs
- Ease of access for calibration and servicing
- Invictus Noise Monitor
- MK:426A Outdoor Microphone
- Automatic calibration
- GSM Cellular Modem for remote data download
- Customised installation for each location
- NoiseHub software with automatic data download & reporting
Short-term noise monitoring with DELTA - Case Study
Acoustical expert, DELTA expanded its noise measurement capabilities by subscribing to Bruel & Kjaer`s Noise Sentinel On Demand service. DELTA - one of the leading acoustical consultant companies in Denmark - accepted a project to measure airport noise. Making actual noise measurements and calculating how changes in air traffic affect the propagation of noise can be time consuming and expensive. It is often more efficient for airports to estimate both the noise impact and how changes in air traffic or other...
Everything You Need To Know About Festival Noise Monitoring
Festival Noise Measurement Accomplishing a good balance between the needs of event organisers and compliance bodies, such as local authorities, and nearby affected communities can be a challenging task when monitoring and managing the noise at large music events or festivals. Noise monitoring is essential anywhere where high noise levels could be in breach of the stipulated event conditions. There are many areas within the festival environment that need consideration including fields, car parks, warehouses and...
Invictus noise monitor on the right track- Case Study
An international acoustic consultancy was engaged by contractor Balfour Beatty on behalf of the end client Network Rail in this landmark project that is revolutionising transport across London.The Project:The new rail link will help cut journey times to the heart of the capital by two thirds in some cases, passing through 37 stations and running 118km from Maidenhead and Heathrow in the west, through new twin-bore 21km (13 miles) tunnels to Shenfield and Abbey Wood in the east. It will increase the overall...
Tips To Buy Best Conveyor Belt Cleaning Machines
Choosing the right conveyor belt cleaning machines ensures top performance and long life of conveyor belts. Similarly, choosing the right machines to clean the belts also ensures efficient performance of the machines. If a conveyor belt breaks down during the peak business hour, it can cause all kinds of chaos. It is advisable to use the best conveyor belt cleaning machines to keep the belts in best of condition. Here are some tips to find the best machines: Find a suitable machine There are many types of...
Indoor air quality can be improved by employing plants as walls
The practice of planting ivy to climb up the walls of buildings has existed for centuries. Now, the trend towards sustainability and green building practices can lead to the development and use of living walls as a means of filtering and improving a building’s indoor air quality. Green walls are a living, breathing, regenerating type of cladding that can be as simple as a living art installation or as complex as a biological air filter. The first category of living walls is simply a vertical garden with all the...
Innovative Technology Provides Real Time Flow Data Management in Indianapolis
This paper presents the program developed by the City of Indianapolis for managing its sewer flow data and describes how it is making real-time information available to several groups that have a stake in the City’s environmental management programs. These groups include United Water, the contract operator for the City’s collection system and its two WWTPs, the Capitol Improvement Program managers, the Clean Stream Team, engineering consultants conducting wet weather RDII studies, administrators who perform...
Enhanced Reductive Dechlorination (ERD) and In Situ Chemical Reduction (ISCR) using EHC®
CH2M HillUnited States Marine Corps Site, North Carolina Summary Site groundwater was impacted with chlorinated volatile organic compounds (CVOCs) at concentrations as high as 80,000 ppb. A total of 24,100 lbs of EHC was injected into areas of elevated CVOC concentration to yield enhanced in situ chemical reduction (ISCR). Six months after the EHC injection, TCA levels had decreased by 94% and TCE levels had decreased by 84 to 90% at the targeted areas, without generation of problematic catabolites. The...
Study on traffic noise level of sylhet by multiple regression analysis associated with health ...
Noise is unacceptable level of sound that creates annoyance, hampers mental and physical peace, and may induce severe damage to the health. Along with the increasing degree of air and water pollution, noise pollution is also emerging as a new threat to the inhabitants of Sylhet City. Exposure to high level of noise may cause severe stress on the auditory and nervous system of the city dwellers, particularly the children. Motorized traffic is one of the major sources of noise pollution in urban areas. Frequent...
Tunneling Under Austin, Protecting the Environment, and Preserving the Peace
ABSTRACTFor over a decade, an existing 42-inch wastewater interceptor has plagued the Austin Water Utility (Utility) with higher than usual maintenance demands. Located in the Walnut Creek flow line, this interceptor is partially exposed with manholes rising several feet above the creek bed due to years of erosion. The interceptor suffers from external erosion and is victim to debris floating down the creek during rain events. On two separate occasions, the Utility designed a new parallel interceptor to replace...
Road traffic noise in downtown area of Tehran
Noise pollution is by now worldwide recognized as a major problem for the quality of life in urban areas. Vehicular traffic is the most important source of the environmental noise pollution in these areas (Zennin et at., 2001; Suksaard et at., 1999; Arana and Garcia. 1 998. The increasing in the population and in the number of circulating vehicles has led to an increase in the noise pollution but the noise pollution has been considered less than other contaminants in the environment. The need for studies regarding...
Noise Mapping in Lille
Lille, with a population of 1091 million inhabitants is the 4th largest agglomeration in France after Paris, Lyon, and Marseille. Situated at the heart of a network of 464 km motorways connecting six European cities (Brussels, Bonn, the Hague, London, Luxembourg and Paris), the metropolis of Lille also has the densest railway network of France after Paris. Pascal Thomas and his team of 8 people are in charge of collecting and analyzing data from traffic, parking, and noise in the urban community of Lille....
Urban Noise Monitoring in Madrid
Dynamic mapping helps Madrid improve the quality of life for her citizens and visitors alike. With its 3 000 000 inhabitants and 2500 km of streets, Madrid is an excellent example of what can be done to improve human comfort related to urban noise. Since the late 60s, Madrid City Council has been working on noise problems. During this period, global environmental analysis has focused on how to evaluate and combat noise and other pollutants. A good evaluation of an existing situation is a crucial step towards...
Low-noise Parking at Madrid Airport
With over 34 million passengers, and handling over 360 000 flights annually, Madrid Barajas Airport, Spain is the fifth largest airport in Europe. It is owned by AENA (Aeropuertos Espaoles y Navegacin Area), who manage over 60 airports throughout Spain and Latin America and handle over 160 million passengers each year. On experiencing a growing number of complaints from the neighbouring community due to ground noise caused by aircraft in the parking area, Madrid Barajas Airport introduced night restrictions...
Case Study: Glastonbury Festival - Noise Monitoring At Glastonbury Festival
In 1970, an entrance fee of just 1.00 would have permitted you, and about another 1500 `free spirits` to enjoy a weekend of listening to the likes of Quintessence, Marc Bolan and T-Rex, while at the same time savouring the undoubted `delights` of free raw milk!! Almost three decades later, and at slightly greater expense, you and over 100,000 other people can now enjoy the delights and unique atmosphere of Europe`s premier outdoor music event with over 250 acts performing on ten stages, as well as many other...
Current Trends in Environmental Noise Monitoring in Europe
Introduction This paper briefly describes the state of the art of environmental noise monitoring development in Europe, including the needs, standards, legislation, data, technology, techniques and tools. This paper will concentrate on the following areas: • How Imagine and the development of ISO 20906 and ISO 1996 affect noise monitoring systems • The need and role of professional databases and the move towards noise management • How modern technology affects the design of state-of-the-art noise...
Noise Monitors and Meters
Sound level meters Description and ApplicationsThe sound level meter is a lightweight instrument for the measurement of sound pressure level (SPL) in decibels. All ANSI-approved meters meet minimum requirements that include an A-weighted network, a slow-response meter characteristic, and a fully graduated scale with measurements ranging from 80 to 130 dBA. The Type II meter is most frequently used. Applications are in worker exposure and noise evaluations. Octave Band AnalyzerSome sound level meters may have...
Definitions Threshold and criterion levels The threshold level is the A-weighted sound level at which a personal noise dosimeter begins to integrate noise into a measured exposure. For example, if the threshold level on a sound level meter is set at 80 decibels (dB), it will capture and integrate into the computation of dose all noise in the employee`s hearing zone that equals or exceeds 80 dB. Sound levels below this threshold would not be included in the computation of noise dose. The criterion level is the...
Using phase-state modelling for inferring forecasting uncertainty in nonlinear stochastic decision ...
The paper introduces the use of phase-state modelling as a means of estimating expected benefits or losses when dealing with decision processes under uncertainty of future events. For this reason the phase-space approach to time series, which generally aims at forecasting the expected value of a future event, is here also used to assess the forecasting uncertainty. Under the assumption of local stationarity the ensemble of generated future trajectories can be used to estimate a probability density that represents...
Introduction The ability to hear sounds is a sensory function vital for human survival and communication. However, not all sounds are wanted. `Unwanted sounds`, for which the term `noise` is normally used, often have their origin in human activities (mainly transport, industry and households). This article addresses environmental noise also referred to in the scientific literature as community, or residential, noise. Environmental noise is the noise experienced by people generated outside households. Noise...