API 653 question answer ||API653||Tank inspector
Автор: Globe Technical
Загружено: 2026-02-27
Просмотров: 6
Описание:
What is the primary difference between API 650 and API 653?
Answer: API 650 covers new construction, while API 653 covers inspection, repair, alteration, and reconstruction of existing tanks.
What are the maximum inspection intervals for(a) in-service external and (b) out-of-service internal inspections?
Answer: External: Every 5 years or
(whichever is less). Internal: Determined by corrosion rates, but generally not to exceed 10-20 years based on risk.
Define the "Critical Zone" in an API 653 inspection.
Answer: The portion of the tank bottom or annular plate within 3 inches (75 mm) from the inside of the shell.
Who is authorized to sign off on a tank for return to service?
Answer: An authorized API 653 Inspector.
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