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  • A&S Concrete Pump Co., Ltd.
  • Address: 469 Xinsheng Road, Gaoxin District, Chengdu, Sichuan 610041, China
  • Tel: +86-28-84167580
  • Fax: +86-28-86129221
  • Email: pump@esmachinery.com
  • Contact Person:Aaron

Japan|Nuclear Crisis|Concrete pump continues critical cooling work

Aconcretepumphaspoured150tonsofseawaterintotheFukushimaDaiichiunit4spentfuelpool.

Thepump's58mboomreachesfromgroundleveluptothepool.Thatamountcorrespondstoabout10%ofthepool'stotalvolumeof1425m3.Theoperationwascarriedoutby12workersandtookthreehours.

Concretepumpworkerswearprotectivegear


Theunit4spentfuelpoolisthemostcriticalofalltheFukushimaDaiichispentfuelpools.BecauseUnit4wasshutdownatthetimeofthetsunami,itsspentfuelpoolcontainsboth783spentfuelassemblies,plus548fuelassembliesunloadedfromthereactor.Itstotalinventoryof1331fuelassembliesisgreaterthantheinventoryofthespentfuelpoolsofunits2and3combined.

Althoughunit5and6werealsoshutdownatthetimeofthetsunami,andsoalsohavelargeinventoriesintheirspentfuelpools,TEPCOstaffwereabletorestartresidualheatremovalsystempumpson19March.


Atalmostthreetimesthevolumeoftheotherspentfuelpools,thecommonspentfuelpoolhasthegreatestnumberoffuelelements,6375outof6840;butTEPCOreportedthatwaterinthepoolwassecuredon18March.Inaddition,thispoolislikelytohousetheoldest,andhenceleastreactive,fuel.

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