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国家核安全局通报5起核电安全事件 [复制链接]

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国家核安全局通报5起核电安全事件
  中国核电网  | 发表于:2016-05-09 | 来源:法制网

[p=null, 2, left]北京5月8日讯 隶属于环保部的国家核安全局通报说,近期,我国核电厂发生了数起由于海洋生物或海洋异物堵塞取水系统从而影响取水安全的事件。国家核安全局公开了5起这样的事件。国家核安全局要求核电营运单位建立预警和预防机制。[/p][p=null, 2, left]这5起海洋生物或异物影响核电厂取水安全典型事件是宁德核电厂3 号机组海生物入侵导致停堆运行事件、红沿河核电厂大量水母涌入循环水过滤系统(CFI)取水口导致H1/2 号机组停堆运行事件、岭澳核电厂2 号机组因海生物涌入取水口导致反应堆紧急停堆运行事件、田湾核电厂海水取水口麦秸杆堵塞运行事件、秦山第二核电厂循环水系统鼓网(3CRF202TF)销子断裂,常规岛生水系统(3SEN)进气导致机组降功率运行事件。[/p][p=null, 2, left]国家核安全局组织了相关调研,发现此类事件国内外都曾多次发生,而且近年来有增多趋势。国家核安全局说,分析表明,此类事件发生的原因是多样的,有对海洋环境背景了解不充分的问题,有取水和过滤系统的设计问题,也有近些年海洋富氧化等原因产生的未曾预计的问题。[/p][p=null, 2, left]就国外类似事件,国家核安全局说,2009年,法国CRUAS 核电厂因同样原因曾发生4 号机组丧失冷源事件。[/p][p=null, 2, left]国家核安全局认为,海洋生物或异物的堵塞可能导致机组的降功率乃至停堆,严重时甚至可能会对最终热阱的可用性构成威胁,需引起高度重视。[/p][p=null, 2, left]国家核安全局要求核电厂营运单位,高度重视海洋生物或异物对海水系统特别是安全重要厂用水系统的影响,结合有关案例,分析自身可能存在的问题;同时,要与有关单位合作,努力掌握海洋生物或异物的产生和运动规律,建立预警和预防机制。[/p][p=null, 2, left]国家核安全局要求,核电厂营运单位对取水和过滤系统可能存在的设计或建设问题加以改进,增强抵御海洋生物或异物的能力;定期对取水构筑物、系统和设备进行检查,做好日常维护、清理和清於等工作;此外,还要完善应对海洋生物或异物堵塞取水系统的应对预案并加强演练,重点要放在保证安全重要厂用水系统的功能上。[/p]
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CHIEFS 34, TITANS 10
Carolina managed just two field goals in the first half behind Cam Newton and trailed 7-6 at halftime,Wholesale Baseball Jerseys 2018. Corey Brown bobbled away an easy TD pass from Newton — one of four Carolina drops in the first half,Nike Air Max 97 Buy.
The game was called with 3 minutes,Kevin Love Jersey, 50 seconds remaining after thunder rumbled and lightning streaked across the sky. Heavy rains had turned one end zone into a lake.
JACKSONVILLE, Fla. (AP) — Matthew Stafford completed 11 of 15 passes for 173 yards and two touchdowns. The Lions (2-1) trailed most of the night,China Jerseys Wholesale, but rookie Zach Zenner's 3-yard touchdown run with 1:41 remaining was the winner.
After managing just three first downs in his first 11 preseason possessions, Brady finally got on track, leading an 80-yard scoring drive before halftime running the hurry-up offense. He capped the drive with a well-placed 18-yard touchdown pass to tight end Scott Chandler.
Smith was 16 of 18 before giving way to third-string quarterback Aaron Murray just before halftime. Murray played the rest of the game for the Chiefs (3-0), throwing for 146 yards with two touchdown passes and an interception as backup Chase Daniel got the night off.
Blake Bortles was the story again for Jacksonville (1-2). He completed 20 of 29 passes for 245 yards and a touchdown. He also ran for 38 yards, including two third-down scrambles that kept scoring drives alive.
Marcus Mariota got off to a slow start for Tennessee (1-2), misfiring on his first three throws. But the first-round pick out of Oregon was 7 of 8 for 99 yards the rest of the half.
LIONS 22, JAGUARS 17
CHARLOTTE, N.C. (AP) — Tom Brady overcame two early interceptions to lead his first touchdown drive of the preseason as the New England Patriots beat the Carolina Panthers 17-16 on Friday night.
Zenner had a 41-yard scamper that set up Fuller's score. He finished with 85 yards on eight carries.

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KANSAS CITY,NFL Jerseys Cheap, Mo. (AP) — Alex Smith threw for 171 yards and two touchdowns in less than a half, and the Chiefs' offense looked the sharpest it has all preseason in a weather-shortened game.
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