The IEC 61346-1 standard, titled "Industrial systems, installations and equipment and industrial products – Structuring principles and reference designations – Part 1: Basic rules", is a foundational document for organizing technical information through a systematic coding method. Key Status: Superseded by IEC 81346-1
IEC 61346-1: Industrial systems, installations and equipment and industrial products — Structuring principles and reference designations. iec 61346-1 pdf
+MP01 – Motor pump building 1+CB02 – Control building 2+T03 – Tank 3No. Despite being an "IEC" (electrotechnical) standard, it is designed for mechanical, process, software, and structural engineering. A pipe, a steel beam, and a software function all get reference designations. +MP01 – Motor pump building 1 +CB02 –