Which discharge is prohibited as per MARPOL?

1 Subject to the provisions of regulation 4 of this annex and paragraphs 2, 3, and 6 of this regulation, any discharge into the sea of oil or oily mixtures from ships shall be prohibited. the oily mixture, in case of oil tankers, is not mixed with oil cargo residues.

What is oily mixture in MARPOL?

3 Oily mixture means a mixture with any oil content. 4 Oil fuel means any oil used as fuel in connection with the propulsion and auxiliary machinery of the ship in which such oil is carried.

What are the conditions to be satisfied in order for an oil tanker to discharge oil or oily mixture into the sea?

The tanker must be 50 nautical miles away from land. The instantaneous rate of discharge of oil content does not exceed 30 litres per nautical mile. The total quantity of discharge must not exceed 1/30000 of the total quantity of the residue formed cargo. The tanker must have operational and approved ODMCS.

What is special area in MARPOL?

Special Areas are defined as certain sea areas in which, for technical reasons relating to their oceanographical and ecological condition and to their sea traffic, the adoption of special mandatory methods for the prevention of sea pollution is required.

What regulation that limits the oil content in the bilge water can legitimately discharge into the sea?

MARPOL
MARPOL has a regulation under ANNEX I which limits the oil content in the bilge water that vessel can legitimately discharge into the sea. It is now a requirement for all vessels to have an oil discharge monitoring and control system along with an oil filtering equipment known as the Oily Water Separator (OWS).

When a ship was in the special areas the discharge of oil or oily mixture into the sea is prohibited except the discharge of?

(b) any discharge into the sea of oil or oily mixture from a ship of less than 400 tons gross tonnage, other than an oil tanker, shall be prohibited while in a special area, except when the oil content of the effluent without dilution does not exceed 15 parts per million .

Can we discharge sewage in port?

As mentioned earlier, ships are only allowed to discharge sewage in ports if they use an IMO-approved sewage treatment plant. Comminuted and disinfected sewage using an approved system must be discharged at a distance of more than 3nm from the nearest land.

What is oily mixture?

Oily mixture means a mixture, in any form, with any oil content, including, but not limited to: (1) slops from bilges, (2) slops from oil cargoes (such as cargo tank washings, oily waste, and oily refuse, (3) oil residue, and (4) oily ballast water from cargo or fuel oil tanks. [ source: 33 CFR § 151.05]

What is the regulation of oily water separator?

Current regulations The regulations in the Clean Water Act limit what may be discharged to sea from an OWS in USA waters. Current limits are < 15 mg/l oil for discharges within 12 nautical miles of shore or 100 mg/l outside that limit.

What is operational discharge of oil?

FROM SHIPS Ship-related operational discharges of oil include the discharge of bilge water from machinery spaces, fuel oil sludge, and oily ballast water from fuel tanks. Also other commercial vessels than tankers contribute operational discharges of oil from machinery spaces to the sea.

What is oily bilge?

Oily bilgewater is the mixture of water, oily fluids, lubricants and grease, cleaning fluids and other wastes that accumulate in the lowest part of a vessel from a variety of sources including engines (and other parts of the propulsion system), piping, and other mechanical and operational sources found throughout the …

What are the 3 segments of an oily water separator on ships?

This unit consists of three stages – filter stage, coalescer stage and collecting chamber. The impurities and particles are separated by the filter and are settled at the bottom for removal.

Which of the following conditions shall be satisfied regarding the discharge into the sea of oil or oily mixtures from ships of 400 gross tons and above?

What are the rules pertaining to discharge of sewage?

Discharge of sewage Prohibited except when the following requirements are complied with: Comminuted and disinfected sewage: at least 3 nautical miles from the nearest land, or. Sewage not comminuted or disinfected: at least 12 nautical miles form the nearest land.

Can you dump human waste in the ocean?

Federal law says that untreated sewage (even if it’s been dosed with a deodorant product) can NOT be discharged in inland or coastal waters. This means the sewage from a portable toilet or a Type III holding tank can not be discharged unless you are in the ocean more than 3 miles offshore.

What are special areas in MARPOL?

Special Areas in MARPOL 73/78

• The Mediterranean sea area.
• The Baltic sea area.
• The Black sea area.
• The Red sea area.
• The Gulf area.
• The Gulf of Aden area.
• The Antarctic Area.
• The North-West European Waters.

How does operational discharge of oil in the ocean?

Can you discharge oil overboard under MARPOL?

Control of Discharge of Oil Under Marpol Annex 1 Under Marpol regulations any non-processed oil or oily mixture is not allowed to be discharged overboard. Only oily mixture is allowed to be discharged provided they are filtered by oily water separator and follow the 15 ppm limit.

What are the Special Areas under MARPOL?

Special areas under MARPOL are as follows: # Status of multilateral conventions and instruments in respect of which the International Maritime Organization or its Secretary-General perform depositary or other functions as at 31 December 2002.

What types of oil are included in the MARPOL?

This means all oil and its mixture except the ones mentioned under annex 2 of the Marpol. Ex: crude oil, diesel oil, bilges waters containing traces of oil and other petrol-chemical products.

What are the MARPOL regulations for discharging processed mixtures?

As per Marpol regulations the processed mixture from such a device; must not be more than 15 ppm of oil before final discharge. Under Marpol regulations any non-processed oil or oily mixture is not allowed to be discharged overboard.