EEMUA Publication 234, "90/10 Copper Nickel Alloy Piping for Offshore Applications," serves as a definitive global standard for designing, specifying, and manufacturing durable, corrosion-resistant seawater piping systems in harsh marine environments. The 2015 publication consolidates former standards (144, 145, and 146) into a single, cohesive specification covering tubes, flanges, and fittings to ensure component interoperability and reduce procurement risk. You can find more information and the publication itself at the EEMUA website.
As of 2025, the process industry is moving toward "Digital Twins" and "Predictive Maintenance." However, obsolescence remains a hardware problem. EEMUA is currently working on guidance notes (GN) to supplement 234 regarding Cybersecurity in Obsolete Systems (e.g., running Windows NT on an obsolete DCS). Expect updates to the PDF in the coming years. eemua 234 pdf
It is helpful to compare EEMUA 234 to related documents: EEMUA Publication 234, "90/10 Copper Nickel Alloy Piping
| Standard | Focus | Key Difference | | :--- | :--- | :--- | | EEMUA 234 | Obsolescence management for E,C&I | User-focused, risk-based, practical templates | | ISO 55000 | General Asset Management | Philosophy and high-level strategy (not detailed obsolescence) | | IEC 62443 | Cybersecurity | Focuses on hackers, not component failure | | ISA-95 | Enterprise/Control integration | Focuses on data flow, not lifecycles | The Future of EEMUA 234 As of 2025,
Verdict: EEMUA 234 is the only standard dedicated exclusively to the nuts-and-bolts of obsolete circuit boards, discontinued drives, and orphaned software.
The standard provides a matrix for scoring risk based on Consequence of Failure (Safety, Environmental, Production Loss) vs. Likelihood of Failure (Spare availability, Supplier health). A high score (Red zone) demands immediate action.
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