joint efficiency vs x-ray examination
joint efficiency vs x-ray examination
(OP)
THE JOINT EFFICIENCY DEFINE TOTALLY X-RAY EXAMINATION OR JOINT EFFICIENY AND X-RAY EXAMINATION MUST BE DEFINED ON A DATA SHEET OF A PV
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joint efficiency vs x-ray examination
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RE: joint efficiency vs x-ray examination
No RT = 70% Efficiency = 0.5" material calculates at 0.35"
Spot RT = 85% Efficiency = 0.5" material calc's at 0.425"
Full RT* = 100% Efficiency = 0.5" calc's at 0.5"
Spot RT is usually 1 single shot and 1 piece of film. Highly recommended to take your [theoretical] 0.5" vessel from 0.35" useable material up to 0.425" This is a 27.5% increase in usable thickness for the price of a single RT.
Full RT is not 100% RT. Full entails 100% of long seams, Spot Shots on the circumferential welds, including heads, and no RT on the nozzles. Usually only cost-effective on stainless steels and more expensive alloys.