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API 653 PREPARATORY COURSE Exam 1 – Open Book Note:
1.
Tick only one alternative which you think is most appropriate.
AST fabr AST fabric icat ated ed to to API API 650 650 is nor norma mall lly y desi design gned ed not not to to exce exceed ed an an oper oper temperature of: a. b. c. d.
2.
260 deg C 100 deg C 90 deg C 21 deg C.
Minimu Minimum m size size of fillet fillet welds welds in the co const nstruc ructio tion n or or repa repairs irs of an AST bu Standard 650 is: a. High Higher er of 6 mm mm (0. (0.25 25”) ”) or half half of the the thi thick ckne ness ss of thin thinne ne joined. b. High Higher er of 9 mm (0.2 (0.25” 5”)) or or one one thir third d of the the thi thick ckne ness ss of th joined. c. High Higher er of 5 mm mm (0. (0.18 1875 75”) ”) or on one e thi third rd of the the thi thick ckne ness ss of plate joined. d. Lowe Lo werr of of 6 mm (0.2 (0.25” 5”)) or or hal halff of of the the thic thickn knes ess s of of thi thinn nner er joined.
3.
As per per API API Stan Standar dard d 650, 650, the overla overlap p at lap-we lap-welde lded d joint joints s shal shalll be at times the nominal thickness of the thinner plate, but need not exceed, a. b. c. d.
4.
2” for for sing single le-w -wel elde ded d lap lap join joints ts and and 4” 4” for for doub double le weld welded ed lap lap joi joi 1” for for sing single le-w -wel elde ded d lap lap join joints ts and and 2” 2” for for doub double le weld welded ed lap lap joi joi 1.5” 1.5” for for sing single le-w -wel elde ded d lap lap join joints ts and and 2” 2” for for doub double le weld welded ed lap lap j 1.5” 1.5” for for sin singl glee-we weld lded ed lap lap joi joint nts s and and 1” 1” for for doub double le weld welded ed lap lap j
Calculate by the 1-Foot method the design shell thickness T d in inches following description of tank built to API Standard 650:
Master your semester with Scribd & The New York Times H = Design liquid level = 50 feet
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Special offer for students:DOnly = $4.99/month. Nominal Tank Diameter = 180 feet G = Design Specific Gravity = 0.86
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d.0.922”
Documents 5.
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Calculate by the 1-Foot method the hydrostatic test shell thickness T inches, of the above referred tank, when water is used for the test : Where, Tt = 2.6 D (H –1) St
a. b. c. d. 6.
Maximum Reinforcement thickness of vertical butt joints of a tank she 28mm, of an AST built to API Standard 650 shall be: a. b. c. d.
7.
0.935” 0.985” 1” 0.922”
5mm 2.4mm 1.6mm 3mm
Vertical joints of a 28mm thick shell of an AST built to API Std. 650 sha radiographed to the extent as given below : a.Full b.Partial c.Spot d. Nil
8.
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In an AST built to API Standard 650, the bottom annular plates have ra weld joints, and are single butt welded with permanent back-up bar, in case, the extent of radiographing radial joints shall be, a. b. c. d.
One spot on 50% of radial joint One spot on 10% of radial joints Full radiography of all radial joints RT – Nil; only MT of 100% joints is adequate. Read Free Foron 30this Days Sign up to vote title Useful Not useful Cancel anytime. 9. As per API Std. 650, personnel who perform and evaluate radiograph Special offer for students: Only $4.99/month. examinations (RT) shall have a minimum qualification as follows:
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Greater of a, b, c
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11.
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Determine whether impact testing is required for A516 gr 70 normalis 1 inch thick, Design temp = 0 degree F (-18 degree C): a. b. c. d.
12.
Not required Required Depends on opinion of design engineer Depends on opinion of tank inspector
Which of the following sets of the Transverse Charpy V-notch Im Values of a fully killed 0.75 “ thick plate of ASTM A 516 gr 60 for a des temperature of -34 degree C, is acceptable as per API 650? Plates normalized. a.20, b.18, c.24, d.20,
11, 12 Joules 24, 12 Joules 22, 10 Joules 10, 27 Joules
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API 653 PREPARATORY COURSE Sheet Music
Exam 1 – Open Book
Answer Key 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
C C B A D A A A B D B B -------------------------------
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