API 570 data sheets - Time intervals/ Line Sizes

Question 0

Testing- Minimum duration For a pressure test

Answer 0

10 minutes

B31.3: 345.2.2.a

Question 1

NDE- Minimum time an examiner should be in a darkened area prior to using a black light for MT & PT exams

Answer 1

5 minutes

V: T-676.4.b. & T-777.2.2.a

Question 2

NDE - Final interpretation of a PT exam after application of Developer (time range)

Answer 2

10-60 minutes

V: T-676.1

Question 3

Testing - Minimum duration of hydro to evaluate integrity of buried pipe

Answer 3

8 hours

570: 9.3.7

Question 4

NDE- max calibration Interval- MT permanent magnet yoke

Answer 4

daily

V: T-762.a

Question 5

NDE - max calibration Internal - RT densitometer

Answer 5

90 days

V: T-262.1

Question 6

Maximum time for obtaining thickness readings when corrosion rate on new pipe is not known (no other data available)

Answer 6

3 months

570: 7.1.2.c

Question 7

Welding- max time a welder or welding operator maintains qualifications for a process without using that process

Answer 7

6 months

IX: QW-322.1.a

Question 8

Interval- suggested interval for above-grade visual surveillance of buried pipe.

Answer 8

6 months

570: 9.3.1

Question 9

NDE- max calibration interval- Electromagnetic MT Yoke

Answer 9

1 Year

V: T-762.a

Question 10

NDE - Maximum Internal for a visual examiner’s eye exam

Answer 10

1 year

V: T-923

Question 11

NDE- Max interval to calibrate pressure gauge used in testing

Answer 11

1 year

V: T-1061.a

Question 12

AI - length of time before an API 570 AI must recertify

Answer 12

3 years

570: A.3.1

Question 13

Inspection - Max thickness inspection interval for a injection point

Answer 13

lesser 3 yrs or 1/2 life

570: table 2

Question 14

Insp- Max external inspection interval for Class 1 & 2 piping

Answer 14

5 year

570: Table 2

Question 15

Insp- Maximum interval for relief devices in fouling or corrosive service

Answer 15

5 year

570: 6.7.3.2

Question 16

Insp - Suggested interval for close-interval potential survey of buried pipe with no CP

Answer 16

5 year

570: 9.3.2

Question 17

Insp - suggested interval for evaluation of soil corrosively for buried pipe with no CP

Answer 17

5 year

Question 18

INSP - Max thickness inspection interval for Class 1 piping

Answer 18

Lesser 5 yrs or 1/2 life

570: Table 2

Question 19

Insp - Maximum interval for relief devices in non-fouling or non-corrosion service

Answer 19

10 years

570: 6.7.3.2

Question 20

Insp - Minimum years of experience for Owner’s inspectors during new fabrication

Answer 20

10 years

b31.3: 340.4.b

Question 21

Insp - Maximum external inspection interval for Class 3 piping

Answer 21

10 years

570: Table 2

Question 22

Insp - Maximum thickness Inspection interval for Class 2 & 3 piping

Answer 22

Lesser 10 yr or 1/2 life

570: Table 2

Question 23

RBI - Maximum interval for the RBI re-assessment

Answer 23

Per Table 2

570: 5.2.4

Question 24

Repairs - when should temporary welded pipe repairs be replaced

Answer 24

Next Opportunity

570: 8.1.4.1

Question 25

Repairs - when shall non-welded repairs & temporary leak sealing devices be removed and repaired.

Answer 25

Next Turnaround

570: 8.1.5

Question 26

NDE - Max calibrating interval - check the light intensity of a black light used in a MT or PT exam.

Answer 26

Before & After use

V: T-676.4 & T-777.2.e

Question 27

NDE - Pipe size where RT is preferred for thickness readings

Answer 27

<,- (less than,or equal to) 1” NPS

570: 5.7.1

Question 28

NDE - Pipe size where UT thickness readings may require specialized UT equipment

Answer 28

<,- (less than,or equal to) 2” NPS

570: 5.7.1

Question 29

Terms - Small bore piping

Answer 29

<,- (less than, or equal to) 2” NPS

570: 3.1.86

Question 30

Maximum pipe size normally allowed for threaded pipe

Answer 30

<,- (less than, or equal to) 2”NPS

Question 31

Maximum pipe size normally allowed for socket-welded pipe

Answer 31

<,- (less than or equal to) 2” NPS

574: 5.3.1

Question 32

NDE - Maximum pipe size for performing an elliptical shot (double-wall technique, double-wall view)

Answer 32

3 NPS

V: T-271.2.b

Question 33

Pipe size where pipe is almost always made using rolled & welded plate

Answer 33

> 16 NPS (less than)

574: 4.1.1.1

Question 34

SOIL RESISTIVITY –> inspection interval?

<2000 ohms

Answer 34

5 yrs

Question 35

SOIL RESISTIVITY –> inspection interval?

2000 to 10,000 ohms

Answer 35

10 yrs