Operating pressure conditions for non-explosion hazards in plants handling propane gas

Jae Young Choi, Sang Hoon Byeon

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Hazardous area classification is designed to prevent chemical plant explosions in advance. Generally, the duration of the explosive atmosphere is used for zone type classification. Herein, IEC code, a quantitative zone type classification methodology, was used to achieve Zone 2 NE, which indicates a practical non-explosion condition. This study analyzed the operating pressure of a vessel handling propane to achieve Zone 2 NE by applying the IEC code via MATLAB. The resulting zone type and hazardous area grades were compared with the results from other design standards, namely API and EI codes. According to the IEC code, the operating pressure of vessels handling propane should be between 101325-116560.59 Pa. In contrast, the zone type classification criteria used by API and EI codes are abstract. Therefore, since these codes could interpret excessively explosive atmospheres, care is required while using them for hazardous area classification design.

Original languageEnglish
Pages (from-to)493-497
Number of pages5
JournalKorean Chemical Engineering Research
Issue number3
Publication statusPublished - 2020 Jun

Bibliographical note

Publisher Copyright:
© 2020 Korean Institute of Chemical Engineers. All rights reserved.


  • Explosive atmosphere
  • Hazardous area classification
  • IEC 60079-10-1
  • Process safety
  • Zone 2 NE

ASJC Scopus subject areas

  • General Chemical Engineering


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