A citation reference " Ruan, Y. Q., Aures, A. (RUA 93) " found in technical manuals like the ATHLET 3.4.0 User's Manual . It refers to an integral modeling technique for high-speed simulation of light water reactor (LWR) processes presented in 1993.

In social science or urban planning papers, "Rua 93" may refer to a specific author's work from 1993 (e.g., Rua, M. ) cited in studies regarding public participation or environmental assessments. Draft for a Technical Resource Page

While many engineers look to (download for free) PDF versions of this manual, it is recommended to source it from official engineering archives like the Tomsk Polytechnic University eArchive or official regulatory portals to ensure the document includes all current safety amendments. (PDF) ATHLET 3.4.0 User's Manual - ResearchGate

Alignment with GOST safety standards (e.g., GOST 12.1.010-76).

Comprehensive rules for fire and explosion prevention in industrial zones.

Based on technical and academic databases, the term "RUA 93" typically refers to: