Press Release Back Number(2006)

Notice on 12th Planned Return of Solid-Glass Waste (54 rods of 130)

October 20, 2006
Tokyo Electric Power Company, Inc.
Chubu Electric Power Co., Inc.
Hokuriku Electric Power Company
Kansai Electric Power Co., Ltd.

One hundred thirty rods of solid-glass waste from the 12th return of such waste are scheduled to ship to Japan Nuclear Fuel Co., Ltd.'s waste management facilities in Rokkasho, Aomori Prefecture. The attached document gives an overview of 54 of these rods, which concern Tokyo Electric Power Company, Inc., Chubu Electric Power Co., Inc., Hokuriku Electric Power Company and Kansai Electric Power Co., Inc.

An application to confirm off-site disposal of the waste will be filed with the Japan Nuclear Energy Safety Organization after confirmation in France. An announcement will be made immediately upon making the application.


Attachment: Concerning Solid-Glass Waste to be Returned



(Attachment)

Concerning Solid-Glass Waste to be Returned


The solid-glass waste that is to be returned consists of high-level radioactive liquid waste, the result of reprocessing of spent fuel, that is hardened together with borosilicate glass and then sealed in stainless steel containers strong enough to withstand loading during storage, dropping during handling, and so on.

An overview of the solid-glass waste to be returned is given below.


(1) Owners and quantity:


  • Tokyo Electric: 20 rods
  • Chubu Electric: 20 rods
  • Hokuriku Electric: 6 rods
  • Kansai Electric: 8 rods

(2) Returning from:

Areva NC (formerly known as Cogema) (France)


(3) Years of manufacture:

1994 - 2002


(4) Source of high-level radioactive liquid waste:

Uranium fuel used in light water reactors


(5) Dimensions:

Diameter: approx. 430 mm; height: approx. 1,340 mm


(6) Container materials:

Materials complying with French specification Z15 CN24 13 (equivalent to JIS SUH309)


(7) Weight:

476 kg - 511 kg


(8) Calorific value (as of October 20, 2006):

1.3 kW/rod - 1.7 kW/rod


(9) Radioactive density of each type of radioactive substance (as of October 20, 2006):


• Radioactive substances emitting alpha rays:
    1.7×10 to the 14th power - 2.8×10 to the 14th power Bq/rod
  (radionuclide density) 241Am :
    7.0×10 to the 13th power - 1.1×10 to the 14th power Bq/rod
  244Cm :
    7.9×10 to the 13th power - 1.7×10 to the 14th power Bq/rod
  Radioactive substances not emitting alpha rays:
    1.5×10 to the 16th power - 1.9×10 to the 16th power Bq/rod
  (radionuclide density) 90Sr :
    2.5×10 to the 15th power - 3.3×10 to the 15th power Bq/rod
  90Y :  
    2.5×10 to the 15th power - 3.3×10 to the 15th power Bq/rod
  106Ru :
    3.4×10 to the 10th power - 3.4×10 to the 13th power Bq/rod
  106Rh :
    3.4×10 to the 10th power - 3.4×10 to the 13th power Bq/rod
  125Sb :
    9.6×10 to the 11th power - 2.8×10 to the 13th power Bq/rod
  134Cs :
    1.0×10 to the 13th power - 3.4×10 to the 14th power Bq/rod
  137Cs :
    4.1×10 to the 15th power - 5.4×10 to the 15th power Bq/rod
  137mBa :
    3.9×10 to the 15th power - 5.1×15 to the 15th power Bq/rod
  144Ce :
    2.1×10 to the 9th power - 1.3×10 to the 13th power Bq/rod
  144Pr :
    2.1×10 to the 9th power - 1.3×10 to the 13th power Bq/rod
  154EU :
    6.2×10 to the 13th power - 1.5×10 to the 14th power Bq/rod