Hot testing begins at China's ACP100 small modular reactor
· Climate · China
Hot testing is reportedly under way at the ACP100 small modular reactor demonstration project, under construction at the Changjiang site on China's island province of Hainan. The tests simulate the temperatures and pressures the reactor systems will face during normal operation, a key commissioning milestone before fuel loading. The ACP100 is one of the first small modular reactor designs to reach this stage, and its progress is closely watched as a test of whether SMRs can be delivered at commercial scale.
Why it matters：SMRs are central to many countries' plans for flexible, low-carbon power, and the ACP100 reaching hot testing offers a concrete signal on whether the technology is moving toward deployment.
Key points
- The ACP100 is under construction at the Changjiang site in Hainan.
- Hot testing simulates normal operating temperatures and pressures.
- It precedes fuel loading and startup.
Sources (original reporting)
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