Thermal Expansion affections in Piping system

Linear Thermal Expansion of Pipping; One factor that must be considered in the design of the piping system is Piping Flexibility. Because our pipes will stretch itself when the temperature is increased, and shrink when the temperature is dropped. Therefore, our piping system must be flexible or able to move back and forth sufficiently to support elongation or shrinkage of pipe. In ASME B31.3 Process Piping Design determines the Linear Thermal Expansion of each material. To be used to calculate how much piping will stretch or shrink according to how much temperature has changed. The values ​​in Table C-2 measure … Continue reading Thermal Expansion affections in Piping system

Flash point, Boiling Point, and Autoignition point.

Flash Point VS. Autoignition Temperature;  Flash Point is the lowest temperature at which a material or substance ( Flammable materiales) vapors ( Vapor was) enough to be flammable when mixed with air (Air) and a power source ( With The the Source, Ignition). Autoignition Temperature is the temperature at which the vapor of materials or substances ( Flammable materiales) can spontaneously ignite when mixed with air (Air) without a power source ( online Without the Source, Ignition). For example, Gasoline can ignite from a temperature of 43 degrees Celsius (Flash Point). If sparks occur And can ignite spontaneously at temperatures from 280 degrees Celsius ( … Continue reading Flash point, Boiling Point, and Autoignition point.

ODME – What is ODME? (Part 2)

How does ship crew operate ODME??? ODME is required under Marpol Annex I, which deals with pollution aspects related to oil cargoes. For easy understand how does it work? We will take an example: a product tanker of 21.8000 DWT which has just discharged an oil cargo of 15000 MT (16000 m3 @ 15 C). This tanker need to clean these tanks which were carrying total oil cargo of 15000 MT. How to proceed with cleaning and decanting the slops with ODME ? It has some below steps: 1 – Set the total oil quantity in ODME: Marpol has put a … Continue reading ODME – What is ODME? (Part 2)

ODME – What is ODME? (Part 1)

1) What is ODME? O.D.M.E is Oil Discharge Monitoring Equipment which is used to check and monitor oil is discharged follow related rule ( MARPOL 73/78 ) when a tanker discharges the sea water from the slop tank where sea water used to clean the tanker after unloading the cargo to be prepared to ship other kind of cargo has been stored. “Oil” means all kinds of oil including crude oil, heavy oil, sludge, waste oil and refined oil. ODME is to remove water from the slops and not as much oil as is allowed also. 2) Condition to discharge oil into … Continue reading ODME – What is ODME? (Part 1)

General about Marine Fuels!

Marine fossil fuels: The majority of the existing and proposed marine fuels are of the same origin. The same fuel composition may be available from renewable sources (e.g. natural gas – bio gas, methane…) but here only the most common are taken into consideration. + How is a crude oil feld formed? The generally accepted theory is that crude oil was formed over millions of years from the remains of plants and animals that lived in the seas. As they died, they sank to the seabed, were buried with sand and mud, and became an organic-rich layer. Steadily, these layers … Continue reading General about Marine Fuels!

Intrinsically Safe Cable

Intrinsic safety – I.S is a protection technique for the safe operation of electrical and electronic equipment/system in Hazardous Areas where any ignition source needs to be eliminated. Electrical cables are essentially sealed from damage, external electrical or magnetic fields (EMI), and isolated from non-intrinsically safe circuits. (Avoid the increase of amperes mA in I.S system –> A –> Hot spot –> Ignition -> Explosion ) I.S cables are usually colored blue so as to identify the potential risk of the electric circuit and the need for special consideration. The I.S cable to be separated from Non-I.S circuits.  Hazardous areas is the … Continue reading Intrinsically Safe Cable