高度危险责任（Liability for Ultra-hazardous Activities），指从事高度危险作业造成他人损害的，应当承担侵权责任。

其中，高度危险作业是指从事高空、高压、易燃、易爆、剧毒、放射性、高速运输工具等对周围环境有高度危险的作业。高度危险作业是在活动过程中产生高度危险性的，因此只有采取一定的安全方法进行活动，才能够控制活动中产生的危险，减少损害发生的几率。

承担高度危险责任的几种情况：

民用核设施或者运入运出核设施的核材料发生核事故造成他人损害的，民用核设施的营运单位应当承担侵权责任；但是，能够证明损害是因战争、武装冲突、暴乱等情形或者受害人故意造成的，不承担责任。

Where a nuclear accident occurs at a civil nuclear facility or when nuclear materials are transported into or out of a civil nuclear facility and damage is thus caused to another person, the operator of the facility shall bear tort liability. However, the operator shall not assume such liability if it can be proven that the damage is caused by a war, an armed conflict, a riot, or under other like circumstances, or the damage is intentionally caused by the victim.

民用航空器造成他人损害的，民用航空器的经营者应当承担侵权责任；但是，能够证明损害是因受害人故意造成的，不承担责任。

Where a civil aircraft causes damage to another person, the operator of the aircraft shall bear tort liability, provided that the operator shall not assume any liability if it can be proven that the damage is intentionally caused by the victim.

占有或者使用易燃、易爆、剧毒、高放射性、强腐蚀性、高致病性等高度危险物造成他人损害的，占有人或者使用人应当承担侵权责任；但是，能够证明损害是因受害人故意或者不可抗力造成的，不承担责任。被侵权人对损害的发生有重大过失的，可以减轻占有人或者使用人的责任。

Where the possession or use of flammable, explosive, highly toxic, highly radioactive, strongly corrosive, highly pathogenic, or other ultrahazardous things causes damage to another person, the possessor or user thereof shall bear tort liability, provided that such a possessor or user shall not assume any liability if it can be proven that the damage was intentionally caused by the victim or caused by force majeure. Where the infringed person is grossly negligent for the occurrence of the damage, the liability of the possessor or user may be mitigated.

从事高空、高压、地下挖掘活动或者使用高速轨道运输工具造成他人损害的，经营者应当承担侵权责任；但是，能够证明损害是因受害人故意或者不可抗力造成的，不承担责任。被侵权人对损害的发生有重大过失的，可以减轻经营者的责任。

Where damage is caused to another person by a person engaging in work at a height, high voltage, or underground excavation activities, or by using high-speed rail transport vehicles, the operator shall bear tort liability, provided that the operator shall not assume any liability if it can be proven that the damage was intentionally caused by the victim or caused by force majeure. Where the infringed person is grossly negligent for the occurrence of the damage, the liability of the operator may be mitigated.

遗失、抛弃高度危险物造成他人损害的，由所有人承担侵权责任。所有人将高度危险物交由他人管理的，由管理人承担侵权责任；所有人有过错的，与管理人承担连带责任。

Where damage is caused to another person by an ultra-hazardous thing that is lost or abandoned, the owner shall bear tort liability. Where the owner has delivered the ultra-hazardous thing to another person for management, the manager shall bear tort liability, provided that the owner shall assume joint and several liability with the manager where he is at fault.

非法占有高度危险物造成他人损害的，由非法占有人承担侵权责任。所有人、管理人不能证明对防止非法占有尽到高度注意义务的，与非法占有人承担连带责任。

Where damage is caused to another person by an ultra-hazardous thing that is illegally possessed, the illegal possessor shall bear tort liability. The owner or manager of the thing shall assume joint and several liability with the illegal possessor if he cannot prove that he has fulfilled a high duty of care to prevent the illegal possession.

未经许可进入高度危险活动区域或者高度危险物存放区域受到损害，管理人能够证明已经采取足够安全措施并尽到充分警示义务的，可以减轻或者不承担责任。

Where a person, without authorization, enters into an area where ultra-hazardous activities are conducted or ultra-hazardous things are stored therein and is thus injured, the liability of the manager of the area may be mitigated or eliminated if it can be proven that he has taken sufficient security measures and fulfilled the duty of sufficient warning.

参考双语例句：

However, the scope of application of these drafts is, on the one hand, too broad (as they are intended to cover all types of environmental harm), and on the other hand too limited (as they focus on the questions related to prevention and allocation of loss caused by transboundary harm and hazardous activities).

然而，这些草案的适用范围：一则由于意图涵盖所有类型的环境损害因而过于广泛，再则因为把重点放在涉及预防跨界损害所造成之损失的分担和危险活动的问题因而过于有限。