Time Intervals Flashcards

1
Q

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

A

5 minutes

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2
Q

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

A

10-60 minutes

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3
Q

Testing - Minimum time to let oil to penetrate when performing a diesel oil test of shell-to-bottom weld

A

4 hour

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4
Q

Testing - Minimum duration for a tank hydrotest to be held at full height

A

24 hours

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5
Q

NDE - Max Calibrating Interval - Permanent magnet MT Yoke

A

1 day

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6
Q

Intervals - Maximum Interval - Routine In-Service inspection

A

1 month

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7
Q

CP - Maximum Interval - Routine check of CP impressed current sources

A

2 months

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8
Q

NDE - Max Calibrating Interval - RT densitometer

A

90 days

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9
Q

Reconstruction - Maximum allowed age of last thickness readings, used to design a reconstructed tank

A

180 days

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10
Q

Weld Qualification – Maximum Time - Welder or operator maintains qualifications for a welding process without using that process

A

6 months

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11
Q

NDE - Max Calibrating Interval - Electromagnetic MT Yoke

A

1 year

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12
Q

CP - Maximum Interval - Detailed check of CP impressed current facilities

A

1 year

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13
Q

CP - Maximum Interval - CP surveys (field potential measurements)

A

1 year

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14
Q

NDE - Minimum Time - To keep RT’s acquired during tank repairs and reconstructions

A

1 year

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15
Q

Vac Box – Max Test Interval - Jaeger 2 eye test for VB oper

A

1 year

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16
Q

NDE – Max Test Interval - Jaeger 2 eye test for PT/ MT tech

A

1 year

17
Q

AI – Time period between API AI recertification

A

3 years

18
Q

Intervals - Maximum Interval - UT readings of a tank shell when the corrosion rate is unknown

A

5 years

19
Q

Intervals - Maximum Interval - External Inspection

A

Lesser 5 years or 1/4 life

20
Q

AI – Time period between API AI on-line recertification

A

6 years

21
Q

Intervals - Maximum Interval - Initial Internal Inspection (without RBI or other special situations)

A

10 years

22
Q

RBI - Maximum Interval - RBI reassessments

A

10 years

23
Q

Intervals - Maximum Interval - UT readings of a tank shell when the corrosion rate is known

A

Lesser 15 yr or 1/2 life

24
Q

Intervals - Maximum Interval - Internal Inspection when the corrosion rate is known (without RBI assessment)

A

20 yr or full bttm life

25
Q

Linings - Typical life of a properly applied tank lining

A

> 20 years

26
Q

NDE - Max Calibrating Interval - Check the light intensity of a black light used in a MT or PT exam

A

Before and after use

27
Q

Vacuum Box - Minimum duration of each vacuum-testing exam

A

5 seconds