Effect of Retaining Preconsruction Primer (PCP) on the Quality of High Performance Protective Coatings Systems

M.K. chung; H.I. Lee; C.S. Shin; K.K. Baek; C.H. Lee

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자료유형: 학술저널

저자정보: M.K. chung H.I. Lee C.S. Shin K.K. Baek C.H. Lee

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제3권 제2호

발행연도: 2004.1

수록면: 59 - 66 (8page)

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In construction of new ships and large steel bridges in Korea, pre-construction primers (PCP), also known as shop primer, are routinely used and retained as an integral part of the protective coating system. Retention of PCP's can significantly reduce building schedule and cost. Retaining PCP through the so-called "sweep blasting" procedure eliminates or minimizes the necessity of a second blast operation, thus shortening overall schedule as well as reducing labor cost and hazardous waste disposal cost. This study evaluates the feasibility of retaining PCP as the part of primer for high performance protective coating systems applied to ships' hull, bottom and ballast tanks. Upon proving that the retention of the PCP is a viable option, the process of coating application can be improved significantly in terms of cost and working schedule of new ships and large steel bridges. Results indicate that use of the PCP via sweeping blasting in conjunction with standard high performance protective coating systems does not degrade the overall performance of the coating systems. At the same time, it is also highly recommended that the secondary surface preparation should consist of grit blasting of weld burnt and other damaged areas to SSPC SP-10 grade (Sa 2.5 Gr.), Near White Blast Cleaning with proper application and attention to detail.

#pre-construction primer #shop primer #blasting #protective coating #Sa 2.5 Gr.

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참고문헌 신청

/ / Typical paint systems by generic type for a given durability in a given environment

/ 2002 / Painting & Inspection Practice

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