Competitive Bidding Relating to a Technology Development Project of Decommissioning and Safety Technology and so on (Development of Technologies for Identifying and repairing Leak Areas in the PCV) [Preliminary Announcement]

Hitachi-GE Nuclear Energy, Ltd. (hereinafter, referred to as “HGNE”) has announced that it will accelerate research and development for dealing with accidents of nuclear power reactors and so on (particularly, in regard to restoration from the accidents at the Fukushima Daiichi Nuclear Power Plant, Tokyo Electric Power Co.), in order to contribute to restoration from nuclear accidents and hazards.

As a part of this project, we plan to place orders for the individual items and thus we will hold competitive biddings for the items shown below in a month or so from now. Although we have not yet posted the bid manuals and specifications, please refer to the item names and the outlines of these items described below.

We plan to post the official bid manuals and specifications on the HGNE website (in Japanese). The official bid manuals and specifications are posted in Japanese and the English summary version of specifications are attached as reference. For this bid it shall be applied by Japanese subsidiary, and the documents shall be submitted in Japanese only.

(1) Item name: Technology development of water sealing method of leak location in reactor building and repair method for lower part of the primary containment vessel. (Tests to verify the seal performance using cementitious material.)

Outline:

We ask for a study and tests to verify the sealing performance for repairing the penetrating portions of the primary containment vessel (PCV) that are located at the outer side of the drywell in the reactor building.

Selection of sealants and seal tests using cementitious material shall be carried out to bury narrow space (small room), to seal the vacuum breaking lines, and to bury the torus room

(2) Item name: Technology development of water sealing method of leak location in reactor building and repair method for lower part of the primary containment vessel.(Study and test a seal method of the vacuum breaking lines.)

Outline:

We ask for a study and tests to verify the sealing performance for repairing the vacuum breaking lines and the penetrating portions of the upper part of the primary containment vessel (PCV) that are located at the outer side of the drywell in the reactor building.

Selection of sealants and tests shall be carried out to repair the upper part of the PCV.
Study, tests and the concept design of tools to seal the vacuum breaking lines without lowering water level of PCV shall be carried out.

A reference of bidding;
Sanga NISHIMURA
Procurement & Sourcing Dept.
Hitachi-GE Nuclear Energy, Ltd.
Tel: +81-294-55-0383
E-mail: sanga.nishimura.kd@hitachi.com
Address: 3-1-1, Saiwai-cho, Hitachi-city, Ibaraki-pref., 317-0073, Japan

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