How often must the accuracy of a 15 ppm bilge monitor be checked?
five years
b) The accuracy of 15 ppm bilge alarms is to be checked by calibration and testing of the equipment conducted by a manufacturer or persons authorized by the manufacturer and should be done at intervals not exceeding five years or within the term specified in the manufacturer’s instructions, whichever is shorter.
How do you test a 15 ppm alarm?
Hold the OIL ALARM switch 33 pressed. OIL ALARM is issued in 2 seconds. OIL ALARM lamp 17 blinks and 15 PPM is displayed. At same time ALARM is raised in Engine Room.
What would be the result if the 15 ppm bilge alarm monitor activates during operation of the OWS?
If the oil content is higher than 15 ppm, the OCM will activate an alarm and move a three-way valve that, within a short period of time, will recirculate the overboard discharge water to a tank on the OWS suction side.
What is OCM in oily water separator?
An OCM is a small part of what is called the oil discharge monitoring and control system. Oil content meters measure how effective the oily water separators on a ship are functioning. If the OCM computes that the oily discharge is above the 15 ppm standard, the oily water separator needs to be checked by the crew.
Who should check and certify the accuracy of a 15 ppm bilge monitor?
The accuracy of 15 ppm bilge alarms is to be checked through the calibration and testing of the equipment, to be conducted by the manufacturer or by persons authorised by the manufacturer.
What are the alarms for oily water separator?
A 15ppm Bilge Alarm is normally used in connection to a ship’s oil filtering equipment (also known as “bilge water separator”), monitoring the oil content of the separated/filtered water and stopping the discharge into the sea if the oil content exceeds 15ppm (parts per million).
What is the meaning of 15 ppm?
15 P.P.M means that the rate of oil in a liquid is not more than 15 per million; Sample 1.
What is oily bilge?
Oily bilge water means liquid from the bilge of a gambling vessel which contains used lubrication oils, oil sludge and slops, fuel and oil sludge, used oil, used fuel and fuel filters, and other oily waste. Oily bilge water does not include routine discharges of raw water used for engine cooling.
What is the required ppm for oily water separator inlet pipelines?
An oily water separator can only be operated when the ship is sailing and en route. According to MARPOL, the oil content of the effluent must be less than 15 ppm and the ship has in operation an oil discharge monitoring and control system and oily-water separating/filtering equipment.
What do you call the 1st compartment of the oily water separator?
The complete unit is filled with clean water and then the oil/water is pumped to the 1st stage coarse separating compartment. Here, oil having a lower density than water, will rise to the surface with heating coils aiding in this process. This is known as the collection space.
What ppm of oil in water is allowed in OWS?
15 parts per million
As per maritime regulations, the oil content in the water processed from the OWS must be less than 15 parts per million of oil.