Worth mentioning: "tritium" or something that looks like it - has been detected in Ni-H experiments going back to the early 1990s and these experiments were unpowered! Where is tritium coming from? Ignoring the small deuterium content of tanked hydrogen for argument's sake, a valid question arises. What particle formed from protium using only catalytic contact be confused with tritium? Could dense hydrogen be found to emit enough energy to be confused with tritium, or is there any other possibility?
With the help of modern cosmology it now appears, 20 year later, that dense hydrogen could indeed have been confused with tritium back then - to the extent Mills and others are right about "dark matter" and its true identity and emission energy.
The National Institute of Standards and Technology lists 4,500 ± 8 days (12.32 years) as the half life of 3H with a beta decay into helium-3 releasing 18.6 keV of net energy in the process. But the beta electron's kinetic energy is much lower, with an average of 5.7 keV, while the remaining energy is carried off by an undetectable neutrino. Thus any detection is going to be difficult.
Detectors for beta or x-rays of 6 keV and below are problematic as even a thin window will not pass many electrons of this value. Film is the usual option for decay radiation which is unusually low energy and there are specialty films. Detection is usually by default and no one questions anything which is close. But that was before dark matter emissions were spotted.
In fact, dense hydrogen emits in this range of 3-6 keV. We have tossed around the idea for some time on this forum that the 3.6 keV mystery signal which has received so much attention as a dark matter signal in Cosmology could related to UDH.
Anyway, this is the crux of the problem - detection of a signal which is not easy to detect. But who knows, there could be something completely different this time around.
