• Title/Summary/Keyword: Health Guidance Caution Zone

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Assessing the Effects of Vibration Transmitted by Domestic Train Health on Human (국내의 철도 차량의 진동에 대한 인체 영향 조사)

  • 김진기;홍동표;최병재;정완섭
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2001.11a
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    • pp.455-458
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    • 2001
  • In this paper, ISO2631-1(1997) was used to assess the vibration and shock transmitted by train seat with respect to possible effects on human health. Evaluations have been performed on the seat acceleration measured in two type of train, Saemaulho and Mugunghwaho. For each train, limiting daily exposure durations were estimated by comparing the frequency weighted root mean square(i.e., r.m.s) acceleration and the vibration dose values(i.e., VDV), calculated according to ISO2631-1(1997) with exposure limits, health guidance caution zones.

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Evaluation of human vibration of high speed train using ISO 2631 (ISO 2631에 따른 국내 고속철도차량 인체진동 평가)

  • Kim, Ji Man;Park, Jin Han;Ahn, Se Jin;Jeong, Weui Bong
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2014.10a
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    • pp.131-133
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    • 2014
  • Vibration exposure of the KTX and ITX-saemaeulho on the Gyung-Bu line was evaluated and compared in terms of human health based on ISO 2631. RMS value of KTX was calculated as much lower than ITX-saemaeulho in all travel sections. When VDV result of the two trains drived return travel from Seoul to Busan in single day is compared on the health guidance caution zone of ISO 2631, vibration exposure of KTX is safer than ITX-saemaeulho which is marginally under the caution line.

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Evaluation of Human Exposure to Vibration on Domestic High-speed Train using ISO 2631-1 (ISO 2631-1을 이용한 국내 고속철도차량의 인체진동 노출량 평가)

  • Kim, Ji Man;Park, Jin Han;Ahn, Se Jin;Jeong, Weui Bong
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.25 no.4
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    • pp.266-274
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    • 2015
  • Vibration exposure of domestic high speed trains(KTX and ITX-saemaeulho) to passenger traveling on the Gyung-Bu line was measured to evaluate health effect which is based on ISO 2631-1. The vibration exposure was compared with the frequency weighted root mean square(r.m.s.) and vibration dose value(VDV) of the two trains’ vibration. It is concluded that vibration exposure of the two train during round trip of Busan-Seoul in single day is evaluated to be safe for the passenger’s health according to the health guidance caution defined on ISO 2631-1. Futhermore KTX’s vibration exposure is found to be significantly lower than ITX-saemaeulho thanks to lower vibration magnitude as well as shorter trip time.

Evaluation of Whole-Body Vibration and Occupational Noise for Excavator Drivers (굴삭기 운전자의 전신진동 및 작업소음 평가)

  • Youn, Jeong-Taek;Park, Sang-Kyu
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2000.06a
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    • pp.125-131
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    • 2000
  • This study was performed to evaluate the whole-body vibration and occupational noise for excavator drivers. Measurement, evaluation and assessment were based on the ISO 2631 and OSHA. Average vibration level was 0.65m/$s^2$(z axis) for breaking work and 0.36 m/$s^2$(z axis) for excavating work. Vibration levels during breaking work exceed the health guidance caution zone and this means that the drivers are exposed to potential health risks. Average daily noise exposure level was 86.4 dB(A) for breaking work and 84.6 dB(A) for excavating work.

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Evaluation of Ride Vibrations of Agricultural Tractors (농업용 트랙터의 승차 진동 수준 평가)

  • Kim, H.J.;Kim, K.U.
    • Journal of Biosystems Engineering
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    • v.33 no.3
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    • pp.151-156
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    • 2008
  • This study was conducted to evaluate ride vibrations experienced by tractor operators during plowing, rotovating, and transporting operations in Korea. Field data of ride vibrations were taken at the operator-seat interface from 49 tractors and analyzed on the basis of ISO 2631-1 and EU Directive 2002/44. Of the measured ride vibrations 15.4% in the plowing and 12.5% in farm road transport exceeded the 8-hour fatigue decreased proficiency boundary in the fore and aft directions at frequencies from 1 to 5 Hz. 93.9% exceeded the 8-hour potential health risk of ISO 2631-1. The ride vibrations exceeding the 8-hour exposure limit were 38.5% in plowing, 31.6% in rotovating, 100% in farm road transport and 88.9% in concrete road transport. Although most tractor operators were not exposed to ride vibrations greater than the 8-hour exposure limit value (ELV) of EU Directive 2002/44, 7.7% of the operators in the plowing experienced greater vibrations than the ELV in the fore-aft direction. Farm road transport produced greater vibrations than any other operations. Concrete road transport, plowing and rotovating operations followed next. Limit criteria for ride vibration exposure differ depending upon the guidelines. Exposure limit of the health guidance caution zone of ISO 2631-1 is lowest among its kinds.