[Risk of electromagnetic fields in electric power stations and substations of a petrochemical plant].

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "ELF",
    "source": "occupational",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Operators in electric power stations and substations of a petroleum processing (petrochemical) plant",
  "sample_size": null,
  "outcomes": [
    "Measured low-frequency electromagnetic field exposure levels (5–30,000 Hz) compared with reference exposure limits",
    "Conclusion regarding likelihood of adverse effects based on limits"
  ],
  "main_findings": "Electromagnetic field exposure was evaluated in the low-frequency range (5–30,000 Hz) in electric power stations and substations of a petroleum processing plant. Based on measured values and the reference exposure limits considered, the authors concluded operators should be exposed without adverse effects.",
  "effect_direction": "no_effect",
  "limitations": [
    "No quantitative exposure measurements reported in the abstract",
    "No details on measurement methods, locations, or time-averaging provided",
    "No sample size or number of measurements reported",
    "Health outcomes were not directly assessed; conclusion is based on comparison to reference limits"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic fields",
    "low-frequency",
    "ELF",
    "occupational exposure",
    "power stations",
    "substations",
    "petrochemical plant",
    "exposure limits"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Exposure assessment in operators working in power stations/substations within an industrial plant."
    }
  ]
}