M/V Eleranta IMO Water Ballast Tank Inspection Report. China Shipping International Shipyard Co. Ltd (CSIS), Changxing Island, Shanghai

Transcription

1 M/V Eleranta IMO Water Ballast Tank Inspection Report China Shipping International Shipyard Co. Ltd (CSIS), Changxing Island, Shanghai 24 June 2010 Report prepared by: Andrew Cass Page 1 of 17

2 1. Newbuilding Vessel Delivery Details Vessel name M/V Eleranta Ship type Bulk Carrier DWT 73,222 Hull number IMO number Builder Samsung Heavy Industries, Geoje, South Korea Delivery date 16 May 1995 Ship operator V Ships (UK) Ltd WBT coating scheme 2 x 125µm dft Intershield 300 (ENA300 series) Cathodic protection No sacrificial anodes 2. Inspection Details Location China Shipping International Shipyard Co. Ltd (CSIS), Changxing Island, Shanghai Date 24 June 2010 In-service period 15 years Docking reason Class special survey; Routine maintenance Classification Lloyd s Register Attendees WBT s inspected Andrew Cass (International Paint, Worldwide Marine, Bus. Dev. Manager) Qian Lei (International Paint Shanghai, Technical Service Manager) Tang Ding (International Paint Shanghai, Technical Service Representative) Chief Officer (V Ships (UK) Ltd) No. 4 Starboard Topside tank Forepeak tank No. 1 Double Bottom tank Page 2 of 17

3 3. Summary of Water Ballast Tank Inspection Results No. 1 Double Bottom Tank Assessed as Good by Class. Minimal maintenance or repair carried out throughout the 15 years. Some corrosion on underside of cargo holds caused by reverse impact damage but coating system still intact and performing well in the immediate surrounding areas. Edges, weld seams and cut-outs in excellent condition. Hopper tanks also in excellent condition, with only a few very minor areas of corrosion. No. 4 Starboard Topside Tank Assessed as Fair by Class. This is largely as a result of structural repairs required from stress areas, rather than breakdown of the coating. Some general corrosion on the deckhead caused by highly corrosive micro-environment and damages on the reverse side of work carried out on the main deck. Some maintenance of coating system carried out in service using a (non-ip) solvent-free ballast repair coating. Edges, weld seams and cut-outs generally in very good condition with some corrosion on erection joint areas. Forepeak Tank Some general corrosion evident, particularly around tank access areas. Good corrosion protection in complex areas with some localised breakdown on scallops, manual welds and mechanically damaged edges. 4. Superintendent Comments The cleaning of the areas to reveal the true nature of the coatings beneath is impressive, as the casual observer would consider the discolouration as staining of the coating. The few inserts insisted upon by LR were as a result of stress and fatigue of the metal and not due to any coating corrosion. In fact, the removed panels exhibited coating in good condition on both sides, which was impressive given the aforementioned material fatigue. My own opinion is that the main fabric of the TST s is still well protected and edge failure around scallops is to be expected. The photos are representative of the tank conditions. Superintendent - V Ships (UK) Ltd For and on Behalf of Owners Page 3 of 17

4 Photo 1 5. Photographic Report - 15 years in service: No. 1 Double Bottom tank Photo 2 Excellent overall condition. Very good corrosion protection of edges and weld seams. Page 4 of 17

5 Photo 3 Photo 4 No corrosion on cut-outs and scallop areas. Page 5 of 17

6 Photo 5 Photo 6 Excellent overall condition. Good resistance to spread of corrosion after reverse impact damage on underside of cargo holds. Page 6 of 17

7 Photo 7 Photo 8 Coating appears in excellent condition after removal of mud staining. Excellent corrosion protection at standard dft ( µm) after 15 years in service. Page 7 of 17

8 Photo 9 6. Photographic Report - 15 years in service: No. 1 Double Bottom tank (hopper) Photo 10 Excellent overall condition in complex areas. Very limited corrosion on weld seams, cut-outs and stiffener edges. Page 8 of 17

9 Photo 11 Photo 12 Very good corrosion protection on sharp edges, including support brackets. Some very minor areas of corrosion in difficult to access scallop areas. Page 9 of 17

10 7. Photographic Report - 15 years in service: No. 4 Starboard Topside tank Photo 13 Photo 14 Very good overall condition with only minor areas of touch up. Excellent corrosion protection on edges and weld seams. No blistering. Page 10 of 17

11 Photo 15 Photo 16 Excellent corrosion protection on flat surfaces and access manholes. Some corrosion starting around stiffener cut-out areas. Page 11 of 17

12 Photo 17 Photo 18 Coating appears in excellent condition after removal of mud staining. No corrosion on flat plates or longitudinal stiffeners. Good edge retention and corrosion protection. Page 12 of 17

13 Photo 19 Photo 20 Very good overall condition. Some areas of corrosion appearing on underside of main deck after prolonged service period. Page 13 of 17

14 8. Photographic Report - 15 years in service: Forepeak tank Photo 21 Photo 22 Good overall condition after 15 years in service in aggressive Forepeak tank conditions. Some minor areas of corrosion. Good overall protection of edges and weld seams. Page 14 of 17

15 Photo 23 Photo 24 Good general overall condition, even in complex areas. Some areas of corrosion after prolonged service period. Page 15 of 17

16 Photo 25 Photo 26 Some corrosion on tank access areas after prolonged service period. Intact coating still in excellent condition after removal of mud staining. Page 16 of 17

17 Photo 27 Photo 28 Very good corrosion protection of difficult to access areas. No corrosion or cracking on weld seams. Excellent protection of ratholes. [End of report] Page 17 of 17