Verify that non-mandatory requirements (e.g., "should" statements) from industry standards or other documents invoked by Subpart O (e.g., ASME B31.8S-2004 and NACE RP0502-2002) are addressed by one of the following approaches: [§192.7(a)]
Incorporated into the operator's plan and implemented as recommended in the standard; or
An equivalent alternative method for accomplishing the same objective is justified and implemented; or
A documented justification is included in the plan that demonstrates the technical basis for not implementing recommendations from standards or other documents invoked by Subpart O.