Not a design code; it is the (US)
law.
49 CFR § 192.493 - In-line inspection of pipelines.
§ 192.493 In-line inspection of pipelines.
When conducting in-line inspections of pipelines required by this part, an operator must comply with API STD 1163, ANSI/ASNT ILI-PQ, and NACE SP0102, (incorporated by reference, see § 192.7). Assessments may be conducted using tethered or remotely controlled tools, not explicitly discussed in NACE SP0102, provided they comply with those sections of NACE SP0102 that are applicable.
[Amdt. No. 192-125, 84 FR 52245, Oct. 1, 2019]
49 CFR § 195.591 - In-Line inspection of pipelines.
§ 195.591 In-Line inspection of pipelines.
When conducting in-line inspection of pipelines required by this part, each operator must comply with the requirements and recommendations of API Std 1163, Inline Inspection Systems Qualification Standard; ANSI/ASNT ILI-PQ, Inline Inspection Personnel Qualification and Certification; and NACE SP0102-2010, Inline Inspection of Pipelines (incorporated by reference, see § 195.3). An in-line inspection may also be conducted using tethered or remote control tools provided they generally comply with those sections of NACE SP0102-2010 that are applicable.
[Amdt. 195-101, 82 FR 8000, Jan. 23, 2017]
--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."