API 650 - Appendex - A

Question 1

Annex - A provides requirements for field-erected tanks of ,,,,,,,capacity

Answer 1

relatively small

Question 2

Annex - A provides requirements for stressed components have a nominal thickness of no more than ,,,,,,

Answer 2

13 mm (1/2 in.)

Question 3

Annex - A is applicable only when specified by the Purchaser and is limited to design metal temperatures
,,,,,,,,,, and ,,,,,,,,,,,,,material is used].

Answer 3

above –30 °C (–20 °F) When Killed material

above –40 °C (–40 °F) when fine grain

Question 4

As per Annex -A , Shell-plate materials shall not be more than …….. thick

Answer 4

13 mm (1/2 in.)

Question 5

As per Annex -A, The maximum tensile stress before the joint efficiency factor is applied shall be,,,,,,,,,,,,,

Answer 5

145 MPa (21,000 lbf/in.2)

Question 6

As per Annex -A, The tension in each ring shall be computed ,,,,, above the centerline of the lower horizontal joint of the course in question

Answer 6

300 mm (12 in.)

Question 7

As per Annex -A, , When these stresses are computed, the tank diameter shall be taken as the ,,,,,of the bottom course

Answer 7

nominal

diameter

Question 8

As per Annex -A, The joint efficiency factor shall be ,,,,,,, with the ,,,,,,radiography

Answer 8

0.85

spot

Question 9

As per Annex -A, the spot radiography may be omitted, and a joint efficiency factor of ,,,,,shall be used.

Answer 9

0.70

Question 10

As per Annex -A, the welded joint spacing requirements shall not be less than ,,,,,,

Answer 10

21/2 times the shell thickness