표제지
목차
Abstract 10
제1장 서론 12
1.1. 연구 배경 및 목적 12
1.2. 선박평형수 관리협약의 개요 14
1.3. BWMS의 특징 15
1.3.1. UV 형식 BWMS 16
1.3.2. 전기분해 방식 BWMS 17
제2장 연구 방법 19
2.1. 평형수 처리시간 계산방법 19
2.1.1. 계산조건 19
2.1.2. 계산절차 22
2.2. 동압 손실 계산 23
2.2.1. 관장치에서의 동압 손실 계산 23
2.2.2. UV BWMS에서의 동압 손실 계산 25
제3장 계산 결과 26
3.1. UV BWMS 설치에 따른 평형수 처리시간 변화 26
3.2. 평형수 배관 벽의 거칠기 차이에 따른 평형수 처리시간 변화 31
3.2.1. 55K LPG 선박의 평형수 배관 벽 거칠기에 따른 평형수 처리시간 31
3.2.2. 대형선박의 평형수 배관 벽 거칠기에 따른 평형수 처리시간 35
제4장 UV 형식 BWMS의 형식승인 시험 결과 검토 48
4.1. 육상시험 결과 48
4.2. 선상시험 결과 50
4.2.1. UV BWMS 통과에 따른 평형수 처리시간 비교 50
4.2.2. UV BWMS 필터 통과에 따른 유량 비교 53
4.3. 계산 결과와 육상시험 및 선상시험 결과의 비교 56
제5장 결론 57
참고문헌 60
Table 2-1. Specification of ballast piping system 21
Table 3-1. Ballasting time calculation results (Case 1, Existing piping system) 27
Table 3-2. Ballasting time calculation results (Case 2, with UV BWMS and without flow control function) 28
Table 3-3. Ballasting time calculation results (Case 3, with UV BWMS and with flow control function) 29
Table 3-4. Comparison of ballasting time for each case with 100% ballast water level 31
Table 3-5. The value of material roughness 31
Table 3-6. Ballasting time in case of steel, mortar lined with flow control function for 55K LPG Carrier 32
Table 3-7. Ballasting time in case of plastic with flow control function for 55K LPG Carrier 33
Table 3-8. Comparison of ballasting time as per the deviation of material roughness with flow control function for 55K LPG Carrier 34
Table 3-9. Specification of ballast piping system of 325K VLOC 36
Table 3-10. Ballasting time in case of steel, rusted with flow control function for 325K VLOC 37
Table 3-11. Ballasting time in case of steel, mortar lined with flow control function for 325K VLOC 38
Table 3-12. Ballasting time in case of plastic with flow control function for 325K VLOC 39
Table 3-13. Comparison of ballasting time as per the deviation of material roughness with flow control function for 325K VLOC 40
Table 3-14. Specification of ballast piping system of 23,000 TEU container vessel 42
Table 3-15. Ballasting time in case of steel, rusted with flow control function for 23,000 TEU container vessel 42
Table 3-16. Ballasting time in case of steel, mortar lined with flow control function for 23,000 TEU container vessel 43
Table 3-17. Ballasting time in case of plastic with flow control function for 23,000 TEU container vessel 44
Table 3-18. Comparison of ballasting time as per the deviation of material roughness with flow control function for 23,000 TEU... 46
Table 3-19. Comparison of ballasting time as per the different material roughness with flow control function for different type of ships 46
Table 4-1. Flow rate of BWMS and test facility 49
Table 4-2. Particulars of the testing ship 51
Table 4-3. Comparison of ballasting time during shipboard test 53
Table 4-4. Flow rate deviation with/without passing through auto-back flushing filters 55
Fig. 1-1. Schedule of BWMS installation 14
Fig. 1-2. Application date of BWMS Code 15
Fig. 1-3. General treatment method of BWMS 16
Fig. 1-4. Treatment process of UV BWMS 16
Fig. 1-5. General system configuration of UV BWMS 17
Fig. 1-6. Treatment process of electrolysis technology BWMS 18
Fig. 2-1. Discharge flow rate of fitted ballast pump 19
Fig. 2-2. Simplified ballast piping system 20
Fig. 2-3. Dimension of simplified ballast tank 21
Fig. 2-4. The equivalent length of fittings and valves 24
Fig. 3-1. Ballasting time calculation results for 55K LPG Carrier 30
Fig. 3-2. Ballasting time calculation as per the different pipe materials for 55K LPG Carrier 34
Fig. 3-3. Sectional drawing of 325K VLOC 35
Fig. 3-4. Ballasting time calculation as per the different pipe materials for 325K VLOC 40
Fig. 3-5. Sectional drawing of 23,000 TEU container vessel 41
Fig. 3-6. Ballasting time calculation as per the different pipe materials for 23,000 TEU container vessel 45
Fig. 3-7. Comparison result of deviation of ballasting time with flow control function as per ship type and pipe roughness 47
Fig. 4-1. System diagram of UV BWMS for land-based test 48
Fig. 4-2. Flow rate of BWMS and test facility during land-based test 49
Fig. 4-3. Piping diagram of UV BWMS for shipboard test during - de-ballasting operation 52
Fig. 4-4. Piping diagram of UV BWMS for shipboard test during ballasting operation 54
Fig. 4-5. Flow rate deviation 55
Fig. 4-6. Decrease rate of flow rate by passing through filters 56