1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. The Plaintiff A Co., Ltd. (hereinafter “Plaintiff”) is a company that produces and supplies steel towers for the installation of electric wires to the Defendant for the supply of electricity, and Plaintiff B is the representative director of the Plaintiff Company.

B. A supply contract between the Defendant and the Plaintiff Company 1) On January 20, 201, the Plaintiff Company refers to 12 steel towers for the supply of electricity to the Defendant and the Dong-gu Seoul Special Metropolitan City C Industrial Complex (hereinafter “instant steel tower”). On January 20, 201, the steel tower for the supply of electricity to the Defendant and the Dong-gu Seoul Special Metropolitan City C Industrial Complex refers to “D 1” and the steel tower for the first supply of the said 12 period is referred to as “D 2 through 12” in the following order of delivery.

3) The contract under which the goods are supplied (hereinafter “instant contract”)

The Plaintiff Company supplied the Defendant with the entire D1 and 12 sets up until March 17, 2012.2) In addition, the Plaintiff Company supplied the steel tower for the supply of the C Industrial Complex, other than the steel tower for the supply of electricity, with the same specifications as D1 and 12 set forth in the Defendant’s other business places (Seoul-Gyeongbuk Development Branch, the Jeonbuk Regional Headquarters).

(c) the occurrence of an accident, however, it means the work of setting up the Category D1 at a quarterly point where E transmission lines and new transmission lines are connected, and connecting the electric wires for power supply to the steel tower for temporary processing.

이 이루어진 때부터 약 열흘 후인 2012. 3. 19. 18:00경 D 1호기(총 6단 구조물이다)의 하단으로부터 2단 중간 부분이 가로방향으로 절단되어 넘어지는 사고가 발생하였고(이하 ‘이 사건 사고’라 한다), 그로 인해 D 1호기와 선로로 연결되어 있던 E 송전선로상의 기설 21호 철탑(이하 ‘이 사건 21호 철탑’이라 한다)이 장력을 이지기 못하고 철탑 상단 부분부터 좌굴(挫屈)되는 2차 사고가 발생하였다. 라.

1) On April 10, 2012, the Defendant, based on the results of the investigation conducted by the affiliated power researchers (hereinafter “Power Research Institute”) on April 10, 2012, set forth in D1.