Subject: MAN DIESEL SAFETY INSTRUCTIONS FOR TURBOCHARGER NA70 T (NAPIER)

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Brent Wells
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1 PREMUDA SPA COMPANY INFORMATION N. 7/2013 SAFETY/QUALITY/ENVIROMENT MANAGEMENT Genoa, June 11, 2013 To: MT FOUR SMILE Subject: MAN DIESEL SAFETY INSTRUCTIONS FOR TURBOCHARGER NA70 T (NAPIER) Masters and Chief Engineer are required to pay a particular attention to the Safety Instructions, attached to this Company Information, recently issued by Man Diesel. The content must be discussed with all persons working in Engine Room during next safety daily (specific and dedicated section). Persons will have to well understand the suggestion and instructions. Copy of the Safety Instructions should be available in Engine Control Room and one copy inserted in the M.E. instruction book. Thanking for attention, Best regards Premuda S.p.A. Tech. Dept. Mgr. M. Leveratto

MAN Diesel & Turbo SE PrimeServ Turbocharger Safety Instructions Organizational safety instructions Make sure that only instructed personnel enters the engine room.

2 MAN Diesel & Turbo SE PrimeServ Turbocharger Safety Instructions Organizational safety instructions Make sure that only instructed personnel enters the engine room. You can significantly reduce the risk for your personnel by these measures: 1. Do not enter the turbocharger hazardous area while the engine is in operation, unless this is unavoidable. 2. Minimize your stay in the engine room and operate your engine exclusively from the engine control room. Do not use the operating panel which is attached to the engine close to the turbocharger 3. Wear appropriate protective clothing, protective goggles, safety boots, hard helmet etc. as recommended in the Instruction Manual of your turbocharger. 4. Only employ original spare parts produced by MAN Diesel & Turbo or any of its licensees and authorized technical service. Fig. 1: Red zone = hazardous area (extended compared to the area in the Instruction Manual) In any case please optimise your path through the engine room in order to minimize your stay in the hazardous area. TC-ASB-Feedback@mandieselturbo.com 1-5

3 Fig. 2: Example path around the engine Change of maintenance work We recommend also to change the maintenance work as follows - please refer to the work item number in your turbocharger manual. Please make sure that the Instruction Manual you are working with corresponds with your turbocharger. Work item 901 / 501 Description in the manual Inspection for abnormal noise and vibrations Recommendation Stay out of the hazardous area (ref. Fig. 1) for this inspection. In case of an abnormal noise stay away from the turbocharger, stop the engine immediately, identify and eliminate the source of the noise before re-starting the engine. 903 Check turbocharger and system pipes for leaks Carry out this work only when engine is stopped. Oil leaks as well as gas leaks can also be identified by residues when the engine is stopped. TC-ASB-Feedback@mandieselturbo.com 2-5

4 905 / / / / / 505 Check all the fixing screws, casing screws and pipe connections for tight fit Turbine dry cleaning Turbine wet cleaning Compressor wet cleaning Cleaning of air filter Carry out this inspection only when the engine is stopped. Use it regularly at reduced engine load according to the description of turbine wet cleaning. Use it regularly at reduced engine load according to the manual. Stop using the cleaning device. Carry out this work only when engine is stopped. Make sure that the filter mat is always installed properly and undamaged. In case a U-pipe manometer is installed on your turbocharger stop using it. 506 Inspection of sealing air valve Carry out this work only when engine is stopped. Jet Assist Ensure that jet-assist pressure does not exceed 4 bar (as per operating manual). In case you require further assistance please contact MAN Diesel & Turbo for recommendations. Please stay out of the hazardous area also in case of maintenance work on the engine. Additional maintenance work recommended By carrying out the below mentioned maintenance, you substantially decrease the risk that the compressor wheel and turbine wheel of the turbocharger can fail. Compressor inspection procedure 1. Inspection of compressor wheel for pre-damage: o Remove the silencer according to the work cards in your manual. o Check the leading edges of the compressor for foreign object damage (FOD) impact o X TC-ASB-Feedback@mandieselturbo.com 3-5

Diesel & Turbo Service Department for further assistance.

5 o Check the compressor wheel and the insert piece for rubbing marks. o If you find traces of FOD impact or rubbing marks, contact the MAN Diesel & Turbo Service Department for further assistance. Do not re-start the engine without prior consultation. TC-ASB-Feedback@mandieselturbo.com 4-5

6 2. The suction area of the compressor in front of the silencer and the air intake casing must be free from foreign objects at all times during the operation of the engine. 3. The intake of foreign objects into the suction area of the compressor has to be prevented. 4. The operation of the turbocharger is allowed only with a correctly assembled and undamaged filter mat. 5. In case of a surging of the turbocharger foreign particles, which may stay in the charge air cooler, can enter the suction area of the compressor. After a surging incident the engine must be stopped and the inspection procedure described in 1. should be carried out before a re-start of the engine. 6. For all works in the area of the turbocharger, the silencer has to be covered so that foreign objects cannot get into the silencer. 7. The opening at the silencer and the opening in the compressor volute has to be covered when the silencer is disassembled. 8. The surrounding of the turbocharger has to be cleared from foreign objects before recommissioning after engine stop. 9. The silencer must be protected against mechanical damages and it is not allowed to step on the silencer. Please forward this information to your affected technical operating personnel and/or your charterers, if applicable! TC-ASB-Feedback@mandieselturbo.com 5-5

C C S 技术通告. Technical Information

C C S 技术通告. Technical Information C C S 技术通告 Technical Information (2013) Technical Information No.11 Total No.45 Apr. 25, 2013 (Total pages: 2+10) TO: All relevant shipping companies, CCS Branches and Offices, CCS ship/product surveyors