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API 570 OPEN BOOK PT 1: QUESTIONS & ANSWERS
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API 570 OPEN BOOK PT 1: QUESTIONS & ANSWERS
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API 570 OPEN BOOK PT 1: QUESTIONS & ANSWERSWhat is the total number of test coupons (tension and bend) that must be
tested to qualify a 1/4" thick groove weld procedure? Right Ans - 6
For a weldment of 1 1/4 Cr-1/2 Mo base metal, the maximum BNH shall be
Right Ans - 225
When hardness testing repaired welds, how many depressions are required?
Right Ans - 5
What is the maximum pressure rating for a Class 150 flange operating at 400
dg F. Flange material is A182 GR F304? Right Ans - 190 psig
Carbon steel piping in Category D fluid service without impact testing Right
Ans - -20 deg F
For hot tapping and in-service welding repairs extra low hydrogen filler
material should be used for welding carbon steel materials with a carbon
equivalent greater than 0.42% to eliminate the potential for Right Ans -
hydrogen assisted cracking
What is the appropriate pipe schedule for a new threaded NPS 2 seamless
pipe A-106 Gr B used in 600 psig 800 deg F turbine condensate drain service,
with 3/16 corrosion allowance and 0.070" thread allowance? Right Ans -
Sch 160
The maximum surface temperature for magnetic particle testing of weldments
is Right Ans - set by the manufacturer of the examination medium
A filler metal not yet incorporated in ASME BPVC can be use to weld pipe
Right Ans - when a WPS and welders have been qualified
What is the maximum height of weld reinforcement for a girth weld in service
cyclic service condition in piping having a wall thickness of 3/8"? Right Ans
- 1/8"
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