Collection Occupational hygiene, Issue 26, 1990 year
Hygienic characteristics of various methods of blade preservation
L. M. Krasnokutskaya, T. K. Korolenko
doi
Kiev Research Institute of Occupational Hygiene and Occupational Diseases
In order to evaluate the most hygienically favorable method of preserving the blades, studies were carried out in production conditions. In this case, it was envisaged to evaluate three types of inhibitors used for the preservation of blades (TAL-3, IKB-2-2 and BMEA), as well as various methods of preservation, both by direct processing of the blades with a preservative solution using TAL-3 and IKB-2-2, and packing the blades in anti-corrosion paper based on BMEA.
Inhibitors TAL-3 (Mannich base based on condensation products of 2-aminoethyl-2-alkenylimidazoline, paraform and industrial alkylphenols), IKB-2-2 (salt of 1-aminoethyl-2-alkenylimidazoline and tall oil fatty acids) belong to derivatives imidazoline, BMEA'-monoethanolamine benzoate is a benzoic acid derivative.
As a result of our hygienic research with the above methods of preserving blades and the types of equipment used, insignificant air pollution of the working area was revealed: when using IKB-2-2 and BMEA - from traces to 0.1-0.7 mg / m3, TAL-3 —1.4 mg / m3, which is lower than the recommended values (table). The estimated value of OBUV for TAL-3 and IKB-2-2 is 2 mg / m3 (aerosol); approved MPC BMEA - 5 mg / m3 (aerosol - vapor).
Contamination of the unprotected surfaces of the skin of workers' hands was noted throughout the process of preserving the blades only when they were treated with TAL-3 and IKB-2-2 inhibitors.
From our point of view, heating of the working solution, stirring it manually, drying the blades after removing them from the baths without centrifugation, and the presence of inhibitor residues on the blades themselves lead to air pollution of the working area and the skin of the hands of the working TAL-3 and IKB-2-2. When using anti-corrosion paper, BMEA was not found in the washes. When comparing two methods of preserving blades according to the degree of contamination of the skin of workers, it was found that from the standpoint of occupational health, the method of packing in inhibited paper is more rational.