شرکت تامین روانکار ایرانیان

شرکت نفت شل، (به انگلیسی: Shell Oil Company) شرکت نفت و گاز آمریکایی و شعبه کمپانی رویال داچ شل در ایالات متحده آمریکا می‌باشد.این شرکت در زمینه استخراج نفت و گاز طبیعی، بازاریابی فرآورده‌های نفتی، همچنین تولید محصولات پتروشیمی فعالیت می‌کند.شرکت نفت شل، با در اختیار داشتن بیش از ۲۵٫۰۰۰ جایگاه پمپ بنزین در ایالات متحده، مالک بزرگترین شبکه عرضه سوخت در این کشور می‌باشد. شمار کارکنان این شرکت حدود ۲۲٬۰۰۰ نفر است و دفتر مرکزی آن در هیوستون، تگزاس قرار دارد.

Shell Melina Oils

Multi-purpose marine diesel engine oil

Shell Melina Oils are premium quality marine multi-purpose system oils designed, primarily, for low-speed, crosshead, marine diesel engines operating on residual fuels.  They are alkaline oils giving the highest levels of protection in a wide variety of engine and shipboard applications

Applications

   Crankcase systems of low-speed, crosshead, marine diesel engines operating on residual fuels

   Main and auxiliary trunk piston diesel engines burning distillate fuels

   Turbochargers

   Geared transmissions

   Oil-lubricated stern-tubes

   Variable pitch propellers

   Deck machinery

   Other ancillary equipment requiring an SAE 20, 30 or 40 oil

Performance Features

   Oxidation stability

      High resistance to oil thickening with negligible deposits in piston cooling spaces

   Excellent dispersancy

      Keeps sump tanks free from sludge and allows contaminants to be removed by filtration or by centrifugal separation

   Good alkalinity

      Neutralises the strong, highly corrosive, acids contained in the products of combustion which might contaminate the system as a result of cylinder oil draining leaking past piston rod glands, piston rings in trunk piston engines, through cracked pistons, rotary valve seals, etc.

   Good water shedding properties

      Particularly suitable for crosshead engines which use water cooling systems to control piston crown temperatures.

   Excellent resistance to corrosion

      Resistant to corrosion by salt water  Rusting in machinery lubricated by Shell Melina Oils has been unknown, throughout its extensive service experience

Performance Specifications

API                       –    CD

US Military            –    MIL-L-2104C (obs.)

Sulzer                   –    Fully approved for                                    crosshead marine diesel                        engines

MAN B & W           –    Fully approved for                                    crosshead marine diesel                        engines

Purification

Normal purification equipment and practices are recommended for the removal of contaminants.  Equipment should be operated in accordance with Manufacturers’ instructions.

For satisfactory centrifugal separation, it is particularly important to:-

  Select the gravity disc size most appropriate to the oil density

  Contain the oil throughput to no more than that recommended for additive type lubricants by the machine manufacturer.

  Maintain an adequate oil separation temperature:  the optimum should, wherever possible, be above 80°C, but should not exceed 90°C

  Operate the machine on a regular schedule, preferably daily.  Continuous separation is often advisable, depending on the oil condition and size of centrifuge.

Health & Safety

Shell Melina Oils are unlikely to present any significant health or safety hazard when properly used in the recommended application, and good standards of industrial and personal hygiene are maintained.

Avoid contact with skin.  Use impervious gloves with used oil.  After skin contact, wash immediately with soap and water.

For further guidance on Product Health & Safety refer to the appropriate Shell Product Safety Data Sheet.

Protect the environment

Take used oil to an authorised collection point. Do not discharge into drains, soil or water.