Nebraska Engineering researchers are developing a dual-sensing, health-monitoring system for a spent nuclear fuel canister. They are trying to develop a safer and easier way to handle nuclear waste. Their idea involves using helium (or nitrogen) for leak testing. Conventional pressure and temperature testing will not work due to leak tightness restrictions. That is where helium comes into play in an external wall in the canister, from where leakages will immediately alert for breaches in the integrity of the unit.