新闻 > 社会
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China

四川18枚俄罗斯钴-60放射源退役 曾给泡椒凤爪杀菌

2017-09-01 06:31:21   中国青年网

8月31日早上9点,成都东郊的四川省原子能研究院,“请登记并带好检测仪,辐射过量了(它)会响。”在工作人员提醒下,记者接过递来的卡片状仪器带好,走进离大门不远的两层建筑。不少工程师已早早围聚在那儿,他们将在这里正式启动俄罗斯18枚钴-60放射源的退役工作。

钴-60放射源有啥用?

川渝200亿元凤爪产业,基本都靠放射源消毒杀菌

什么是钴-60放射源?

“是目前最成熟的民用核技术应用之一。”四川省原子能研究院院长陈浩介绍,通过放射源释放γ射线,可实现为食品消毒灭菌、工业材料改性、农业辐射诱变育种、进出口检疫等功能。

“比如四川和重庆人爱吃的泡椒凤爪,就要用辐射照射消毒杀菌,因为传统高温杀菌会破坏凤爪口感,放防腐剂又会有害健康。”他介绍,川渝两地凤爪食品产业已达约200亿元,基本都是靠钴-60放射源消毒杀菌。该院还在和农企合作,用辐射诱变水稻、花卉、油菜甚至烟草种子,从中选育出更高产高质的新品种;和药企合作,探索用辐射照射后的聚乳酸材料,替代现在骨折病人使用的钢板钢钉,“聚乳酸在人体内可以降解,就省去了再次开刀取钢板问题。而辐照可以让聚乳酸有钢板的强度。”

科学处理有多重要?

靠自身衰减,放射源退役后要200年才能“无害”

钴-60放射源的半衰期为5.27年,这18枚放射源于2000年和2002年先后采购自俄罗斯,“经过10多年衰减,对工业应用来说放射剂量已很少,到了该退役的时候。”陈浩说。

即便到了退役期,这些放射源依旧需要极度小心应对。“新放射源每根约1万居里(放射性强度单位),现在至少也有1000到2000居里。即便1居里,都对人体有害。”该院质量安全部部长李春宏说。陈浩表示,要靠自身衰减达到与自然环境放射性强度相当的无害水平,放射源退役后还需要约200年。

陈浩介绍,若处理过程中发生泄漏事故,将为周围环境和地下水带来严重的放射性污染安全隐患。退役放射源照射到人,也会对人体带来放射性疾病等伤害。

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China

相关阅读

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170901/31249428.html
Server: cms-9-53
Date: 2024/11/30 00:47:00

Powered by China
China