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Making Sense of Section XI Visual Examination Requirements

[+] Author Affiliations
N. Roger Bentley

TVA Nuclear

Paper No. PVP2002-1247, pp. 313-318; 6 pages
  • ASME 2002 Pressure Vessels and Piping Conference
  • Pressure Vessel and Piping Codes and Standards
  • Vancouver, BC, Canada, August 5–9, 2002
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4650-4
  • Copyright © 2002 by ASME


This paper will review the development of the visual examination requirements of Section XI of the ASME Boiler and Pressure Vessel Code. The original visual requirements were ‘one visual exam fits all’ – to detect physical damage, physical displacement, and evidence of leakage. Resolution requirements were those of Section V of the Code. These requirements evolved over the next 20 years to become several specific types of requirements, each with specific resolution, illumination, and proximity restraints. Review indicated that these separate visual rules are now converging. This paper provides recommendations for revisions to Section XI that consolidate and simplify these requirements.

Copyright © 2002 by ASME



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