This study develops a model to estimate the economic life of the large-diameter water supply pipeline in Korea by supplementing existing methods used to perform similar calculations. To evaluate the developed methodology, the model was applied to the actual target area with the conveyance pipe in P waterworks. The application yielded an economic life computation of 39.7 years, considering the cost of damages, maintenance, and renewal of the pipeline. Based on a sensitivity analysis of the derived results, the most important factor influencing the economic life expectancy was the predicted failure rate. The methodology for estimating the economic life of the water supply pipeline proposed in this study is one of the core processes of basic waterworks facility management planning. Therefore, the methods and results proposed in this study may be applied to asset management planning for water service providers.

ABSTRACT
 1. 서 론
 2. 연구방법
  2.1 상수도관로의 경제적 수명 산정 방법
  2.2 관로 개량비용 및 유지관리비용 산정 방법
 3. 사례연구 결과
  3.1 사례연구 대상관로
  3.2 연구대상관로 파손율 예측 함수 개발 결과
  3.3 연구대상지역 관로 개량비용 및 유지관리비용 산정 결과
  3.4 연구대상관로 경제적 수명 도출 결과
  3.5 민감도 분석 결과
 4. 결 론
 References

• 김기범(서울시립대학교 환경공학과) | Kibum Kim
• 서지원(서울시립대학교 환경공학과) | Jeewon Seo
• 최태호(한국수자원공사) | Taeho Choi
• 구자용(서울시립대학교 환경공학과) | Jayong Koo Corresponding author