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Noise and ventilation

This chapter deals with occupational noise and ventilation procedures. [Pg.87]

All employees exposed at or above an 8-hour TWA of 85 dBA (action level) or more are covered by this regulation (OSHA-1910.95— Noise Exposure). When you include all human senses, only vision has a higher rate of information transfer. We know that sound is the propagation, transmission, and reception of waves in some medium, usually air. Sound waves may have a single frequency or might be a combination of frequencies. Short-duration noise pulses, which can occur one time or may be repetitive, are known as impulse noise. [Pg.87]

The many effects of noise on individuals can lead to several kinds of hearing loss. High frequencies are more damaging when compared with low frequencies, supporting the fact that a continual noise is more of a problan that intermittent noise problems. [Pg.87]

The purpose of the noise section is to provide protection against the effects of noise exposure through noise monitoring, audiometric testing, determination of threshold shifts, hearing protection, employee training, and record keeping. Determination of the dBA should be computed in adherence to 1910.95 Appendix A—Noise Exposure Computation. [Pg.87]

Developing a Safety and Health Program, Second Edition [Pg.88]


Occupational noise and ventilation are occupational environmental problems that have to be dealt with. Chapter 11 gives guidance about responsibilities and procedures to deal with these problems. [Pg.154]

I oise Transmission Reduction in HVACSystems. One common use of sound-absorbing treatment is to reduce noise transmission in heating, ventilating, and air-conditioning (HVAC) systems (6). The treatments ate used to reduce the transmission of fan noise and air turbulence noise through ducts into occupied spaces. Noise transmission reduction in duct systems is described in terms of insertion loss, the difference in sound power level or sound pressure level measured at a given location before and after installation of the treatment or sound attenuation, the reduction in sound power between two locations affected by a sound source. The units ate decibels. [Pg.313]

Does the employer comply with 29 CFR, Subpart G (OSHA standards for ventilation, noise, and ionizing and nonionizing radiation) [OSHA Reference. 120(g)(l)(iv)]... [Pg.262]

Ventilation noise and the annoyance effects which may result have been a recurring question in recent years for researchers, occupational health services, and various aurhorities. In spite of this, there are still major shortcomings in our knowledge about the links between human effects and exposure to ventilation noise. Current regulations and recommendations are thus based on uncertain principles in certain respects. [Pg.346]

Landsrrom, U., Kjellherg, A., and Soderberg, L. (1991). Spectral character, exposure lei fcls and adverse eft ects of ventilation noise in offices. /. Low frequency Noise and Vibration 10(,i i. [Pg.353]

Landstrom, U., Soderberg, L., Nordstrom, B., and Kjellberg, A. (1994). Measure., against ventilation noise—Which tone frequencies are least and most annoying. /. Low Irequenc, - Noise and Vibration 13(3). [Pg.353]

Landstrom, U, Kjellberg, L., Soderberg, L., and Nord.strbm, B. (1991). The effects ot broadband, tonal and masked ventilation noise on performance, wakefulness and annoyance. /. Low Frequency Noise and Vibration 10(4). [Pg.353]

Normally there is some connection between the airflow rate and noise and vibration generation. This could modify the building construction either to prevent spreading or to diminish the levels of noise and vibrations from the air-handling units. This naturally includes all parts of these units, i.e., fans, pumps, and valves (see Chapters 5 and 9). The demands on noise insulation also include the noise and vibrations from the process equipment, which often has a higher level of noise and vibration than the ventilation system. [Pg.408]

In factories, air movement can be generated by unsophisticated equipment, since there is generally reasonable scope for equipment location and noise levels are often not critical. In offices and public spaces, the space, esthetic, noise and air movement criteria tend to be much tighter, and additional natural ventilation above that already provided by windows is normally impractical. The ventilation rate needed can still be calculated using equation (28.6),... [Pg.428]

The ventilation direction is highest at 10 m according to the noise and sonic pressure level, and lowest in the direction of the door where there is a the double wall. At 10m from the storage shed, the A characteristic impulse level is llOdB, and the Flat impulse level is not over 120dB. At 30m, the A characteristic impulse level is lOOdB, and the Flat impulse level is not over HOdB. [Pg.300]

This book provides an advanced level of study of industrial hygiene engineering situations with emphasis on the control of exposure to occupational health hazards. Primary attention is given to industrial ventilation, noise and vibration control, heat stress, and industrial illumination. Other topics covered include industrial water quality, solid waste control, handling and storage of hazardous materials, personal protective equipment, and costs of industrial hygiene control. [Pg.683]

Good ventilation, lighting, temperature and suitable noise and dust pollution, the working environment. 35 6 4 3 2... [Pg.622]

Better plant environmental qualities, such as less noise and heat, and better ventilation and lighting... [Pg.89]

Ver, Istvan L., and Leo L. Beranek, eds. Noise and Vibration Control En neering Principles and AppUcor tions. 2d ed. Hoboken, N.J. John Wiley Sons, 2006. Details sound absorption, passive silencers, enclosures, vibration isolation and damping, machinery and heating, ventilation, and air-conditioning (HVAC) noise control, and active noise suppression. [Pg.1304]

Mandates the minimum requirements for an elevated safe work platform Mandates engineering controls of physical hazards such as ventilation for dusts, control of noise, and control of ionizing and non-ionizing radiation... [Pg.445]


See other pages where Noise and ventilation is mentioned: [Pg.87]    [Pg.89]    [Pg.91]    [Pg.95]    [Pg.97]    [Pg.87]    [Pg.89]    [Pg.91]    [Pg.95]    [Pg.97]    [Pg.313]    [Pg.402]    [Pg.349]    [Pg.350]    [Pg.1120]    [Pg.313]    [Pg.594]    [Pg.402]    [Pg.2296]    [Pg.199]    [Pg.402]    [Pg.34]    [Pg.621]    [Pg.61]    [Pg.218]    [Pg.78]    [Pg.327]    [Pg.424]    [Pg.1042]    [Pg.402]    [Pg.157]    [Pg.620]    [Pg.94]   
See also in sourсe #XX -- [ Pg.87 , Pg.88 , Pg.89 , Pg.90 , Pg.91 , Pg.92 , Pg.93 , Pg.94 , Pg.95 , Pg.96 , Pg.97 ]




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