[Noise-induced hearing loss excess risk: indicators and criteria the problem of choosing].

Introduction: The optimal indicators and adequate criteria for the quantitative assessment of hearing loss excess risk with noise exposure above 80 dBA is urgently needed determination.

Methods: The technology for calculating hearing thresholds according to the model of the third edition of the ISO 1999.3:2013 standard, depending on gender, age, length of service and noise exposure, based on MSExcell tables, for population percentiles 1÷99% in 1% steps has been developed.

[Contemporary methodic approach to evaluation of acoustic load on civil aircraft crew members.].

The article characterizes occupational factors including acoustic ones that influence work conditions of civil aircraft crew members, presents methodic basis to evaluate parameters of aviation noise inside cabin, with consideration of additional load from aviaheadsets. To specify scientifically based method for calculating acoustic load on civil aircraft crew members in cabins, the authors measured noise parameters inside cabins of aircrafts used at present in Russia, and noise-proof properties of domestic and foreign aviaheadsets. Normalized values suggested: equivalent level of A sound over a month (LA,,m), over a year (La); suggestions for reference values: equivalent level of A sound (Leg), over an arbitrary period of piloting length (L,r); coefficient of piloting load.

[FEDERAL CLINICAL RECOMMENDATIONS IN DIAGNOSIS, TREATMENT AND PREVENTION OF HEARING LOSS DUE TO NOISE].

Noise induced hearing loss is a slowly developing hearing impairment, caused by occupational exposure to excessive noise levels, constitutes a lesion of the auditory analyzer and clinically manifested as chronic bilateral sensorineural hearing loss. Currently, there is not a treatment that provide a cure of sensorineural hearing loss. Regular, individually tailored treatment should be directed to the pathogenic mechanisms and specific clinical symptoms of hearing loss, as well as the prevention of complications.

[Health and safety of worker (commentary to the draft ISo 45001)].

The standard ISO 45001 and poor translation of its title in Russian are discussed. The mortality rates from occupational diseases and injuries are compared as well as risk of sudden cardio-vascular death. The priority of occupational health as compared to safety is proven and some ways of amelioration of the system are suggested.

On assessment of exposure to noise in crew members of civil aviation aircrafts.

The article deals with current and prospective documents on assessment of exposure to noisein crew.members of civil aviation aircrafts. The authors suggestedto complete a method calculatingacoustic loadwith correction indexes for uncertainity of measurements concerning noise inside the cabin, for underestimation of noise levels in forced flight regime, forincreased radio talks and active listening time, and for, acoustic efficiency of avia-headsets.