INVULNERABLE SAFETY

A system can be said to be invulnerably safe if it can be shown that any sparking that can occur therein is incapable of igniting a hazardous mixture even if the worst possible fault occurs. This is a "worst case" philosophy; that is, by taking account of the worst fault that can be imagined all others are included. There must, however, be some boundaries, but it will be shown that there are few in number and can be easily demonstrated in practice.

• Supplemental Notes:
  • Presented at training session sponsored by Wilmington Section of the Instrument Society of America, Appeared in "Electrical Safety Practices", Monograph #113.
• Corporate Authors:

  Instrument Society of America

  400 Stanwix Street
  Pittsburgh, PA  United States  15222
• Authors:
  • Redding, R J
• Publication Date: 1971-11

Media Info

• Features: References;
• Pagination: p. 42-46
• Serial:
  • Publication of: American Chemical Society
  • Publisher: American Chemical Society

Subject/Index Terms

• TRT Terms: Atmosphere; Electrical equipment; Electrical systems; Hazards; Safety
• Old TRIS Terms: Electrical equipment hazard; Hazardous atmospheres; Intrinsic safety (Electrical)
• Subject Areas: Marine Transportation; Safety and Human Factors;

Filing Info

• Accession Number: 00054215
• Record Type: Publication
• Source Agency: Instrument Society of America
• Files: TRIS
• Created Date: May 7 1974 12:00AM