ASA 130th Meeting - St. Louis, MO - 1995 Nov 27 .. Dec 01

4pNSa6. Methods of group evaluation of noise load in industry.

Alexander A. Menshov

Mark V. Levin

Dept. of Physical Factors, Inst. for Occupational Health, 75 Saksagansky St., Kiev, Ukraine 252033

Methods of evaluation and regulation of individual noise load for the analysis of its interrelation with quality, labor productivity, and emergency situations at production areas have been elaborated in detail. It is much more difficult to evaluate noise load for the whole group of workers even within the boundaries of one technological zone. For the production area attestation, from the viewpoint of the noise factor, it was proposed that the noise load of a group of workers should be evaluated as a percent ratio of the number of persons whose noise load is higher than the standard, to the total number of workers in the evaluated group. This index can be called the ``coefficient of noise attestation'' (CNA). For the analysis of the interrelation between quality, labor productivity, emergency situations at the production areas, and the noise load, it is proposed that the latter be evaluated as a quotient from the division of the sum of the noise load excesses for each of the workers by the number of workers in the evaluated group. This second index can be called the ``coefficient of noise load on workers'' (CNLW). These coefficients are used in new standards of Ukraine (N 2325 ``Noise. Terms and definitions,'' 1993), in a draft standard of Ukraine (``Noise. Methods of definition of noise load of workers,'' 1995), and in the analysis of the interrelation between emergency situations at thermal power plants of Russia and Ukraine and the noise load on the workers (1979--1989), while attesting working places at the enterprises of building materials in Kiev (1992--1994).