Attenuation of outside noise by shotblasting helmets

• Autorzy: Żera J. , Młyński R.
• Języki publikacji: EN

Abstrakty

EN

Abrasive blasting is a technological process in which forcibly propelling a stream of abrasive material is used to clean or prepare a surface. Among various physical and chemical hazards related to this process a shotblasting operator is exposed to high levels of noise. Regardless of the fact that there are no requirements to measure and report the attenuation of high level of blasting noise, manufacturers often face a question to which extent shotblasting helmets protect the operator from noise. Currently the well developed method for measuring the noise attenuation of shotblasting helmets is neither given in EN 271 standard dealing with the construction of helmets nor in EN 458 series of standards dealing with requirements for hearing protective devices. The purpose of this paper is to present the method of measurements of the noise attenuation provided by the shotblasting helmet.

Słowa kluczowe

EN

noise attenuation; measurements on subjects; measurements on dummy head and torso; shotblasting helmets.

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2004
• Tom: Vol. 29, no. 2
• Strony: 347--358
• Opis fizyczny: Bibliogr. 9 poz., fot., rys., wykr.

Twórcy

autor

Żera J.

• Central Institute for Labour Protection - National Research Institute, Czerniakowska 16, 00-701 Warszawa, Poland

autor

Młyński R.

• Central Institute for Labour Protection - National Research Institute, Czerniakowska 16, 00-701 Warszawa, Poland

Bibliografia

• [1] BLAIR A. W., Abrasive blasting protective practices study – field survey results, American Industrial Hygiene Association Journal, 745–751 (1975).
• [2] IRVING F., Exposure of shotblasting operators to noise in heavy fabrication industries and the requirements for reducing such exposure, Inter Noise 95, Newport Beach CA, USA, 823–826 (1995).
• [3] PATEL J., IRVING F., Measuring the noise attenuation of shotblasting helmets, Ann. Occup. Hyg., 43, 7, 471–484 (1999).
• [4] SUSSEL A., TUBBS R., Occupational exposures during abrasive blasting removal of lead-based paint on a highway bridge, Applied Occupational and Environmental Hygiene, 7, 8, 497–499 (1983).
• [5] EN 271, Respiratory protective devices – Compressed air line or powered fresh air hose breathing apparatus incorporating a hood for use in abrasive blasting operations – Requirements, testing, marking.
• [6] EN 24869-1, Sound attenuation of hearing protectors. Part 1: Subjective method of measurement.
• [7] PN-N-01307:1994, Noise – Permissible values of noise in the work place – Requirements relating to measurements [in Polish], 1994.
• [8] prEN-ISO/DIS 11904-1, Acoustics – Determination of sound immissions from sound sources placed close to the ears – Part 1: Real-ear technique (REAR).
• [9] prEN-ISO/DIS 11904-2, Acoustics – Determination of sound immissions from sound sources placed close to the ears – Part 2: Technique using a manikin (manikin-technique).