1. Of the instant lawsuit, the part of the claim for the confirmation of existence of an obligation based on the performance guarantee insurance contract shall be dismissed.

2. The defendant.

1. Basic facts

가. 당사자들의 지위 및 하도급계약의 체결 1) 원고는 철구조물 제작ㆍ판매업, 건설자재 제조ㆍ판매업, 설비공사업 등을 영위하는 회사이고, 피고는 토목건축공사업 등을 영위하는 회사이다. 2) 원고는 2012. 7. 10. 피고와 사이에, 피고가 국방시설본부로부터 도급받은 ‘평택중여단차량정비’공사 중 기계설비공사(이하 ‘이 사건 공사’라 한다)를 공사기간 2012. 7. 10.부터 2014. 2. 8.까지, 공사대금 2,634,500,000원으로 정하여 하도급받는 내용의 하도급계약(이하 ‘이 사건 하도급계약’이라 한다)을 체결하였다.

Article 7 (Execution of Contracts and Guarantee for Payment of Contract Price) (1) and B (the plaintiff, hereinafter the same shall apply) shall guarantee the execution of contracts and the payment of contract price by each of the following methods:

1. “A” under Article 14-2 (Modification of Contract Price due to Modification of Design) (1) of the method of guaranteeing the performance of a contract by an amount equivalent to 10% of the contract price to Party A, upon request of the ordering person, or by his modification of design, etc., shall adjust the contract amount concerned;

(2) The adjustment of a contract price under paragraph (1) shall be governed by the following standards:

However, the same shall apply to the modification of the design from the ordering person within the scope of adjustment given by the ordering person.

1. The unit price for the increased or decreased construction works shall be the contractual unit price stated in a calculation sheet;

2. The unit price for a new item with no agreed unit price shall be determined by multiplying the unit price determined as at the time of design modification by the successful tender ratio;

Article 25 (Cancellation and Termination of Contracts) (1) In cases falling under any of the following subparagraphs, A or B may cancel or terminate all or part of the relevant contract when the contract is not performed within the said period after demanding the performance of the contract in writing, fixing a reasonable period:

1. A or B terms and conditions of the contract;