 5 常在 2015 年 2 月发布了一项声明，鼓励各国做出努力，使医用同位素生产释放到环境中的氙气对《全面禁试条约》国际监测系统的影响最小化。
• The P5 released a statement in February 2015 encouraging states to undertake efforts to minimize the impact of xenon gas released into the environment from medical isotope production on the CTBT’s International Monitoring System.