Notes from
the loop.
Short, practical notes on commissioning, fluids and maintenance for data centre and Defence systems.
Why the flush sits on the critical path
The pre-commissioning flush is one of the last mechanical activities before IT load. Planned late, it moves the energisation date.
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Specifying PG25 for technology cooling loops
PG25 is the default fluid for many TCS loops. How it is specified, delivered and filled matters as much as the fluid itself.
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SS 726:2026 and what it signals for Australia
Singapore has published a national standard for liquid cooling in tropical data centres. It is a signal of where specifications are heading.
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Cleaning naval heat exchangers in place
Seawater-cooled exchangers foul. Opening and stripping them is slow, and it sits inside a maintenance window that is never long enough.
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- 01At design
The commissioning scope is right before the specification goes out.
- 02In construction
The flush and fill is programmed off the critical path.
- 03At handover
One certificate. The baseline you keep.