Page 61: of Maritime Reporter Magazine (July 1995)

AmerCable

Amerguide

Quick Stripping Shipboard Cables 350 Bailey Road • El Dorado, Arkansas • Fax (501) 862-9613 • (501) 862-4919 • (800) 643-1516

Distributed exclusively by

Seacoast

ELECTRIC COMPANY INC. 50 Broadway • Hawthorne, NY (914) 747-3870 • Low Smoke • Non^Halogen • Armored or Unarmored • Mil*C-24643/14, 15,16,17,19,22

AMERGUIDE is a registered trademark of AmerCable, a division of Associated Materials Incorporated pOPULSION UPDATE iese are the values expected by f B&W Diesel. This confirms in this case, the practical mea- ments comply with the theo- al values.

I*r Impaction 11 cylinders and pistons were ected through scavenge ports ctober 1994: .1 pistons had a light layer of , all rings were loose and non- :en. No visible scratches on pis- rods; :avenge ports had only a light r of coke; 'Under surface was in very good lition, still visible machining ks; pare piston and cylinder liner not yet been touched. ccording to the manufacturer, above observations indicate that engine performs perfectly in tis of the condition of cylinders pistons, and that the balance veen wear and cylinder oil is •ect. iust Valve Overhaul )uring October and November 4, all exhaust valves were dis- ntled for overhaul after 6,000 to 30 hours of service — one valve

L time as a natural daily routine. ; valve spindles and housings re carefully inspected and round.

The overhaul data regarding ex- ist valves taken from the engine and inspection protocol is listed ;he table below. \n average thickness of material und off for both spindles and ve seatings was approximately mm. During the lifetime of the ve spindles it is possible to grind s valve spindle by as much as 2 a, and consequently the valves l be ground up to seven times fore scrapping or possible :onditioning. With a time inter- 1 of 7,000 hours between ndings, valve spindle lifetime is proximately 42,000 hours. This -responds to the lifetime expected

MAN B&W Diesel. The same plies to the valve seats. •ring Claaranc*

For the crosshead, crankpin and ain bearing, the clearances were ecked in July 1994 and the mea- rements taken were all within e limits valid for a new engine. haust Gas lamparatura

As shown in fig 5, the tempera- res in the six cylinders were be- ?een 350 degrees C and 370 de- ees C, resulting in an average mperature of 361 degrees C.

Low and constant exhaust gas mperatures indicate an engine in >od condition.

July, 1995 t

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Amerguide is available in a multitude of conductor sizes and configurations to match your specifications.

Turbothurgar System

The blower was cleaned every day in accordance with the proce- dure prescribed, i.e. water washing of the compressor side. The turbine side was cleaned once a week with crushed nutshells.

Spare Part*

The spare part consumption for

Weserstern is typical for the L35MC engines. However, the service time for Weserstern is too short at this point to give a realistic picture of the future need for spare parts. Gener- ally it seems to be $2 -$4/kW per year for the Rigel ships.

Based on MAN B&W Diesel A/S,

Alpha Diesel's experience, the spare part consumption will gradually increase during the first four years, after which the consumption will be

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