A Noticeable Change in Indoor Radon Levels After Platform Screen Doors Installation in Seoul Subway Station

Jeon, Jae‐Sik; Yoon, Jong-Cheol; Lee, Ho-Chan; Eom, Seok-Won; Chae, Young‐Zoo

doi:10.5572/kosae.2012.28.1.059

Cited by 11 publications

(6 citation statements)

References 10 publications

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“…When CO 2 concentration exceeds 1000 ppm, occupants may complain about headaches, nose and throat ailments, tiredness, lack of concentration, and fatigue [81,217,218]. Additionally, radon exposes respiratory tissues to alpha radiation and increases incidences of lung cancer, but concentrations of airborne radon in subways are usually below admissible dosages [219][220][221][222].…”

Section: Other Air Componentsmentioning

confidence: 99%

“…On the other hand, PSDs prevent air pollutants, especially PM10, from tunnels to platforms. PSDs have five research areas including IAQ, fire smoke, thermal environment, energy conservation, and airflow analysis [219,[277][278][279][280][281][282][283][284][285]. PSDs with controllable vents are wildly attentional environmental control systems.…”

Section: Mitigation Measuresmentioning

confidence: 99%

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Environmental and Health Effects of Ventilation in Subway Stations: A Literature Review

Wen

Leng

Shen

et al. 2020

IJERPH

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Environmental health in subway stations, a typical type of urban underground space, is becoming increasingly important. Ventilation is the principal measure for optimizing the complex physical environment in a subway station. This paper narratively reviews the environmental and health effects of subway ventilation and discusses the relevant engineering, environmental, and medical aspects in combination. Ventilation exerts a notable dual effect on environmental health in a subway station. On the one hand, ventilation controls temperature, humidity, and indoor air quality to ensure human comfort and health. On the other hand, ventilation also carries the potential risks of spreading air pollutants or fire smoke through the complex wind environment as well as produces continuous noise. Assessment and management of health risks associated with subway ventilation is essential to attain a healthy subway environment. This, however, requires exposure, threshold data, and thereby necessitates more research into long-term effects, and toxicity as well as epidemiological studies. Additionally, more research is needed to further examine the design and maintenance of ventilation systems. An understanding of the pathogenic mechanisms and aerodynamic characteristics of various pollutants can help formulate ventilation strategies to reduce pollutant concentrations. Moreover, current comprehensive underground space development affords a possibility for creating flexible spaces that optimize ventilation efficiency, acoustic comfort, and space perception.

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Section: Other Air Componentsmentioning

confidence: 99%

Section: Mitigation Measuresmentioning

confidence: 99%

Environmental and Health Effects of Ventilation in Subway Stations: A Literature Review

Wen

Leng

Shen

et al. 2020

IJERPH

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“…e PSD (platform screen door) separates the main line from the platform to cut off harmful toxic gases and hightemperature smoke and heat in the event of a fire, provides a safe escape route in an emergency, and reduces unpleasant train-induced wind, dust, and noise coming from the tracks, thereby increasing the air-conditioning efficiency [3][4][5]. Due to these advantages, the PSD installation is specified as a platform safety facility in the construction of urban railways, and the PSD-related studies have been conducted by many researchers.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heat and Smoke Flow according to Platform Screen Door and Fan Conditions on Fire in Underground Platform

Jung

Kang

Yoon

et al. 2018

Advances in Civil Engineering

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In this study, a three-dimensional flow analysis of underground subway station was conducted by applying ventilation mode in operation and platform screen door (PSD) opening and closing conditions on fire in underground platform. In order to analyze optimal smoke control and heat removal conditions, the whole underground subway station was set as a model, and a total of eight cases were analyzed by changing the operating conditions of fans for each area under the opening and closing conditions of the PSDs. e analysis results confirmed that the operation mode of supply fan in platform E and I areas located at the third floor underground is more effective than that of exhaust fan in the event of a fire in underground subway station when the PSD is closed. e amount of CO entering a waiting room increased, and the overall CO distribution in the underground subway station was also increased when the PSD is opened. In addition, the CO distributions due to the opening and closing of the PSD were similar to one another when a fire occurred on the platform, which suggests that the operating conditions of the fan affects the formation of CO distribution in the underground subway station rather than the discharge of CO.

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“…지하역사의 오염물질 농도에 대한 조사는 미세먼 지 (Park et al, 2013;Cheng and Yan, 2011;Lee et al, 2010;Salma et al, 2009;Kim et al, 2008;Park and Ha, 2008)를 중심으로 이루어졌으며, 지하공간이라는 특 이성 때문에 라돈 (Jeon et al, 2012;Espinosa and Gammage, 1995 The number of boarding/alighting passengers. …”

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Evaluation on Indoor Air Quality by Statistical Analysis of Indoor Air Pollutants Concentration in a Seoul Metropolitan Underground Railway Station

Yim¹,

Lee²,

Kim³

et al. 2014

Journal of Korean Society for Atmospheric Environment

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The objective of this study was to explore the characteristics of concentration of indoor air pollutants, such as PM 10 , CO 2 , and NO 2 , measured by tele-monitoring system in a Seoul Metropolitan underground railway station from January 1, 2008 to December 31, 2012. The annual average concentration of indoor air pollutants actually varied over a wide range and was found to exhibit marked variation with time and measurement sites (tunnel inlet, platform, and concourse). After installing platform screen doors, the average PM 10 concentration on platform and concourse was decreased by 43.8% and 31.2%, respectively during the study periods. The relationship between the concentration of PM 10 and meteorological parameters (relative humidity and rainfall) or the Asian dust events was regarded as statistically significant. The correlations between the number of boarding/alighting passengers and PM 10 , CO 2 , and NO 2 were calculated. A p-value of less than 0.01 was regarded as significant except NO 2 . The I/O ratio of PM 10 concentration was elevated after a congested time (about 08:00 am). The average I/O ratios of NO 2 were observed in concourse and platform on 03:00 am with 1.76±0.91 and 1.50±0.51, respectively. The average daily variation of standard excess rate of PM 10 and NO 2 concentration in concourse and platform was investigated. The highest standard excess rate was observed on 21:00 (09:00 pm). Cheng and Yan, 2011;Lee et al., 2010;Salma et al., 2009;Kim et al., 2008;Park and Ha, 2008

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A Noticeable Change in Indoor Radon Levels After Platform Screen Doors Installation in Seoul Subway Station

Cited by 11 publications

References 10 publications

Environmental and Health Effects of Ventilation in Subway Stations: A Literature Review

Environmental and Health Effects of Ventilation in Subway Stations: A Literature Review

Analysis of Heat and Smoke Flow according to Platform Screen Door and Fan Conditions on Fire in Underground Platform

Evaluation on Indoor Air Quality by Statistical Analysis of Indoor Air Pollutants Concentration in a Seoul Metropolitan Underground Railway Station

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