API 570 DATA SHEETS(TIME INTERVALS)

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

testing- minimum duration for a pressure test

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

testing- minimum duration of hydro to evaluate integrity of buried pipe

NDE- max calibrating interval - MT permanent magnet yoke

NDE- max calibrating interval- RT densitometer

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

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

interval- suggested interval for above-grade visual survellance of buried pipe

NDE- max calibrating interval- electromagnetic mt yoke

NDE- maximum interval for a visual examiner's eye exam

NDE- max interval to calibrate pressure gauge used in testing

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

Insp- max thickness inspection interval for an injection point

Insp- max external inspection interval for class 1 & 2 piping

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

Insp- suggested interval for close-interval potential survey of buried pipe with porr CP

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

Insp- max thickness inspection interval for class 1 piping

Insp- maximum interval for relief devices in non-fouling or non-corrosive service

Insp- minimum years of experience for owner's inspector during new fabrication

Insp- maximum external inspection interval for class 3 piping

Insp- maximum thickness inspection interval for class 2 & 3  piping

RBI- maximum interval for the RBI reassessment

repairs- when should temporary welded pipe repairs be replaced

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

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