Noise control goal in the train

Noise control goal in the train

division	line 1 [Nopo~Sinpyeong]	line 1(expanded) [Sinpyeong~Dadaepo]	line 2·3	line 4
standard value (average between stations)	74(73)dB	78(75)dB	78dB	75dB

• ( ) is the Noise Management Goal of the 17 New Urban Rail which introduced the Line No. 1 in 2021.

the result of noise measurement in the train

[the agency to measure : Busan Health Environment research team(2020,2022)/Korea Environment of Technology Research(2021)]

[unit : ㏈(A)]

the result of noise measurement in the train

year	line 1(New)	line 1	line 2	line 3	line 4
2022	64	70	72	72	70
2021	63	70	71	73	69
2020	66	71	71	74	67

how to reduce noise

enhancement of lubricator and rail turnout

• To reduce the friction sound of train wheel and rail, auto oil lubricator is installed and to minimize the compact sound, gap in frog of rail turnout needs to be minimized.

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  auto oil lubricator

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  auto oil spray

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  before rail turnout is enhanced

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  after rail turnout is enhanced

rail head part and train wheel turning

• the noise to happen during the train operation can be minimized by cutting the side of rail and the side of train wheel cleanly.

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  rail head part turning

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  rail head part turning

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  before car wheel is cut

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  after the car wheel is cut

Line 4 train runway and car management

• the noise which can happen during the train operation can be minimized by concrete runway management, motor car rubber wheel management(erosion, air pressure), connecting passage and door sound proof system management

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  train runway management

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  door sound proof system management

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  motor car wheel erosion management

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  motor car air pressure management