Safety Assessment of Electromagnetic Exposure in High-Speed Train Carriage With Full Passengers

Annals of work exposures and health · 2020 · No effect · Low evidence

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No effectLow evidencePaper 1509

Study snapshot

PublicationAnnals of work exposures and health · 2020

Study typeexposure_assessment

Reported directionNo effect

Evidence ratingLow

Abstract

Safety Assessment of Electromagnetic Exposure in High-Speed Train Carriage With Full Passengers Rui Tian, Mai Lu. Safety Assessment of Electromagnetic Exposure in High-Speed Train Carriage With Full Passengers. Ann Work Expo Health. 2020 Jun 2;wxaa048. doi: 10.1093/annweh/wxaa048. Abstract The objective of this work is to evaluate the safety of the electromagnetic environment in the carriage of high- speed trains exposed to power cables when the train is full of passengers. The electromagnetic model of a real carriage, two sets of power cables and the 84 passengers were set up by using COMSOL Multiphysics software based on CRH5. The distributions of induced electric and magnetic fields in the carriage, inside and on the surface of passengers were investigated. The results show that the induced electric and magnetic fields on the windows are greater than on the passengers and the max value of induced magnetic field is 2627.10 µT, and the max value of induced electric field is 2.0 × 105 mV m-1. The maximum values of the induced electric and magnetic fields in 84 passengers' brain tissues were obtained, and it was found that the maximum values occurred in the third row passengers. The distribution of induced electric and magnetic fields at the cross- section of passengers' heads in the third row was also obtained, and we found that the passengers at the window side were greater than those of aisle passengers. In the third row, the maximum values of the induced electric and magnetic fields in the head of two passengers near the window were 94.6 mV m-1, 90.9 µT, 96.3 mV m-1, and 90.4 µT, respectively. We also found the all data were below the ICNIRP Reference Levels, which indicates the electromagnetic exposure caused by power cables when the train is full of passengers will not threat passengers' health. pubmed.ncbi.nlm.nih.gov

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment

Effect directionno_effect

PopulationPassengers in a high-speed train carriage (modeled; 84 passengers)

Sample size84

ExposureNot supplied

Evidence strengthLowConfidence: 78% · Peer reviewed: yes

Main findings

A COMSOL Multiphysics model of a CRH5 carriage with two sets of power cables and 84 passengers estimated induced electric and magnetic field distributions. Maximum induced fields reported included 2627.10 µT (magnetic) and 2.0 × 10^5 mV m-1 (electric) on windows; in two passengers near the window in the third row, head values were up to 96.3 mV m-1 and 90.9 µT. The authors state all data were below ICNIRP Reference Levels.

Outcomes measured

Induced electric field (in carriage; on/inside passengers; brain tissues)
Induced magnetic field (in carriage; on/inside passengers; brain tissues)
Comparison to ICNIRP Reference Levels

Limitations

Modeling/simulation study (COMSOL) rather than direct measurements
Exposure frequency and other key exposure parameters not stated in the abstract
Health outcomes were not measured; conclusions based on comparison to ICNIRP Reference Levels

View raw extracted JSON

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": null,
    "source": "power cables (high-speed train carriage)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Passengers in a high-speed train carriage (modeled; 84 passengers)",
  "sample_size": 84,
  "outcomes": [
    "Induced electric field (in carriage; on/inside passengers; brain tissues)",
    "Induced magnetic field (in carriage; on/inside passengers; brain tissues)",
    "Comparison to ICNIRP Reference Levels"
  ],
  "main_findings": "A COMSOL Multiphysics model of a CRH5 carriage with two sets of power cables and 84 passengers estimated induced electric and magnetic field distributions. Maximum induced fields reported included 2627.10 µT (magnetic) and 2.0 × 10^5 mV m-1 (electric) on windows; in two passengers near the window in the third row, head values were up to 96.3 mV m-1 and 90.9 µT. The authors state all data were below ICNIRP Reference Levels.",
  "effect_direction": "no_effect",
  "limitations": [
    "Modeling/simulation study (COMSOL) rather than direct measurements",
    "Exposure frequency and other key exposure parameters not stated in the abstract",
    "Health outcomes were not measured; conclusions based on comparison to ICNIRP Reference Levels"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "high-speed train",
    "carriage",
    "power cables",
    "COMSOL Multiphysics",
    "induced electric field",
    "induced magnetic field",
    "ICNIRP",
    "passengers",
    "exposure assessment"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.7,
      "reason": "Study explicitly compares modeled induced fields to ICNIRP Reference Levels."
    },
    {
      "slug": "occupational-exposure",
      "weight": 0.25,
      "reason": "Published in an occupational/work exposure journal and assesses EMF environment in a transport setting, though focused on passengers."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1093/annweh/wxaa048
PubMed: 32483584

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