Missing Bolts on Ex d Equipment — Classification and Action
This article covers Missing Bolts on Ex d Equipment — Classification and Action. Missing bolts on Ex d equipment is a Category X deficiency under IEC 60079-17. This guide explains why missing bolts are so serious, how many bolts can be missing, and what action must be taken.
Key Requirements
This inspection topic is covered in depth in IEC 60079-17 and tested in CompEx Ex03 and Ex04 assessments. Understanding the correct approach to this inspection scenario is essential for safe hazardous area inspection practice.
EX Academy's 15 inspection simulations cover this and related inspection scenarios. Each simulation presents a real work order, equipment data, and inspection findings that require deficiency identification and classification — exactly as you will face in your CompEx assessment.
Classification Guide
When assessing this type of deficiency, always apply the fundamental question: does it compromise the protection mechanism? Use the Category X/A/B/C framework from IEC 60079-17 to make your classification decision and document your findings clearly.
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