![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[多选题]
《危险化学品企业特殊作业安全规范》在管道、储罐、塔器等设备外壁上动火,应在动火点()m范围内进行气体分析,同时还应检测()气体含量;在设备及管道外环境动火
A.10
B.20
C.设备内
D.设备周围
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
AC
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.10
B.20
C.设备内
D.设备周围
AC
A.0.50m
B.0.80m
C.1.00m
D.1.20m
A.18.0%
B.19.5%
C.21.0%
D.23.5%
A.四级风以上(含四级风)天气
B.五级风以上(含五级风)天气
C.浓雾天气
D.雨雪天气
A.大于21%
B.大于23.5%
C.19.5%~21%
D.在富氧环境下不应大于23.5%
A.上下
B.上中下
C.24 m
D.12m
A.自然通风
B.强制通风
C.通入蒸汽
D.通入氧气