Section 3 Flashcards
Terms and Definitions
What is an ‘Alteration’?
Physical change with design implications
API 653 par 3.1
What is an Authorized TANK inspector?
Employee of an Authorized Inspection Agency qualified and certified
API 653 par 3.4
What is breakover point?
Area on a tank bottom where settlement beings
API 653 par 3.5
What is candiate tank?
Tank for which corrosion rates are not known
API 653 par 3.6
What is the critical zone?
Portion of the tank bottom or annular plate within 3” of the inside edge of the shell, measured radially inward
API 653 par 3.10
What is door sheet?
Section of plate (or plates) cut from existing tank shell to create a temporary access opening
API 653 par 3.12
Dimension of a shell penetration that is considered to be a major repair or alteration?
> º12” NPS
API 653 par 3.20 (a)
Installing a bottom penetration within what distance of the shell is considered a major repair or alteration?
within 12” of the shell
API 653 3.20 (b)
Removing and replacing, or adding a shell plate beneath the design liquid level where the longest dimension exceeds what dimension is considered a major repair or alteration?
> º12”
API 653 par 3.20 (c)
Removing and replacing or adding a section of annualr plate ring where the longest dimension exceeds what dimension is considered a major repair or alteration?
> º12”
API 653 par 3.20 (d)
Removal and replacement of annular plate ring weld or vertical shell weld where the longest dimension exceeds what dimension is considered a major repair or alteration?
> º12”
API 653 par 3.20 (e)
What length of a bottom-to-shell would be a major repair/alteration if greater than 50% of the cross-section of the weld is repaired?
> º0”
API 653 par 3.20 (g)
What is a repair?
Work necessary to restore a tank to a condition for safe operation
API 653 par 3.26
What is a repair organization?
Owner/Operator
Contractor acceptable to Owner/Operator Authorized by or not prohibited by Jurisdiction
API 653 par 3.27
