Bilge Pumping and Oily Water Separators Quiz
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Questions and Answers

Explain the purpose of the sea water inlet valve on bilge pumps.

To help prime a pump in cases where priming may be an issue.

What is the function of the air release on the separator shell?

To prevent air entrapment at the top of the separator which can lower the oil/water interface and reduce capacity.

Why is an oil content monitor installed on the overboard discharge?

To ensure the oil content of the effluent does not exceed 15 p.p.m.

What is the purpose of the baffle plates inside the separator shell?

<p>To enhance the separation process by creating turbulence and improving oil-water separation.</p> Signup and view all the answers

Explain the function of the relief valve on the separator shell.

<p>To prevent overpressure within the separator shell and ensure safe operation.</p> Signup and view all the answers

What is the purpose of the Oil Record Book?

<p>To formally record movements of fuel, oils, and contaminated fluids to prevent pollution to the environment.</p> Signup and view all the answers

Why is it important to fill in the Oil Record Book during normal watchkeeping duties at sea?

<p>To allow port state control to review the vessel's actions and ensure compliance with environmental regulations.</p> Signup and view all the answers

What are the responsibilities of the watchkeeping engineer regarding the Oil Record Book while the vessel is at sea?

<p>The watchkeeping engineer has a direct and legal responsibility to monitor and control the operations recorded in the Oil Record Book.</p> Signup and view all the answers

When is an emulsion considered stable according to the text?

<p>After one hour, if there is no visible separation (oil or oil sheen forms at the top of the water column in the cylinder) then the emulsion is stable.</p> Signup and view all the answers

(a) Which vessels are required to carry the International Oil Pollution Prevention Certificate (IOPPC)?

<p>Vessels (other than tankers) over 400 GT.</p> Signup and view all the answers

(b) What is the validity period for the IOPPC?

<p>The IOPPC is valid for 5 years and subject to annual and intermediate surveys.</p> Signup and view all the answers

(c) Describe FOUR criteria to be met before the IOPPC is issued.

<ol> <li>The vessel must have an approved 15ppm OWS, 2) The vessel must have an initial survey, 3) The Oil Water Record book must be present, 4) An alarm must be fitted to be activated once 15ppm has been exceeded, and 5) The overboard discharge should be automatically stopped once 15ppm is exceeded.</li> </ol> Signup and view all the answers

(a) What is the size of the vessel which must carry a Shipboard Oil Pollution Emergency Plan (SOPEP) for machinery spaces?

<p>Any vessel, other than a tanker, over 400 GT.</p> Signup and view all the answers

(b) In what language must the SOPEP be written?

<p>The SOPEP should be written in the languages of the senior officers onboard.</p> Signup and view all the answers

(c) List the FOUR items that must be included in the SOPEP.

<ol> <li>Procedure to be followed when reporting an oil pollution incident, 2) List of persons to be contacted in the event of an incident, 3) Details of actions to be taken to reduce the discharge in the case of an incident, and 4) Procedures and point of contact for the ship for co-ordinating shipboard action with authorities in combatting the pollution.</li> </ol> Signup and view all the answers

(a) List the FOUR items to be recorded in the oil record book in the case of an accidental discharge of oil overboard.

<ol> <li>Time, 2) Position, 3) Approximate quantity discharged, and 4) Circumstances or reasons for the discharge.</li> </ol> Signup and view all the answers

(c) (i) Who is responsible for signing off each completed operation in the oil record book?

<p>The Engineer Officer of the Watch is responsible for signing off each completed operation in the oil record book.</p> Signup and view all the answers

What is the limit on oil discharge from an Oily Water Separator?

<p>15 ppm (parts per million)</p> Signup and view all the answers

List four items that must be recorded in the Oil Record Book when bilges are pumped overboard using a non-automatic system.

<ol> <li>Date</li> <li>Start time</li> <li>Start position</li> <li>Contents of all tanks at start</li> <li>Contents of all tanks at finish</li> <li>Finish time</li> <li>Finish position</li> <li>Final quantity discharged overboard</li> </ol> Signup and view all the answers

What should happen if the content of the oil in the discharge overboard is detected as exceeding the limit set using an automatic system?

<p>The discharge monitor will detect the reading that is over 15ppm and then a 3-way valve will redirect the discharge water back via the recirculating line. All overboard discharge will be stopped.</p> Signup and view all the answers

List three conditions or faults that interfere with oil-water separation in an Oily Water Separator.

<ol> <li>Flow rate through the OWS</li> <li>Detergents and emulsions</li> <li>Temperature of fluids in OWS</li> <li>Fouling of the discharge monitor (requires cleaning)</li> <li>Fouled internal baffle plates (requires cleaning)</li> </ol> Signup and view all the answers

What is the appropriate equipment to be fitted on a vessel 400 GTR or above, according to Annex I of the MARPOL convention?

<ol> <li>Oil-discharge monitoring and control system</li> <li>Oily-water separating equipment and filtering systems</li> <li>Slop tanks</li> <li>Sludge tanks</li> <li>Piping and pumping arrangements</li> </ol> Signup and view all the answers

What documentation is required, according to Annex I of the MARPOL convention, and why is it required?

<p>The Oil Water Record book is required, in addition to bridge and engine room logs, to provide a formal and detailed record of all operations concerning waste fluids.</p> Signup and view all the answers

How does the use of baffles in an Oily Water Separator affect the separation process?

<p>The use of baffles increases the overall surface area for the oily water to pass across, which requires slow flow rates but improves the separation.</p> Signup and view all the answers

What is the purpose of the positive displacement pump in an Oily Water Separator system?

<p>The pump is of the positive displacement type, and the OWS system must therefore be fitted with a relief pressure on the OWS shell should the discharge be either closed or become blocked for any reason. This is to prevent the shell from being over-pressurized, leading to the risk of shell damage and subsequent collateral damage to system components.</p> Signup and view all the answers

What is the significance of the Oil Water Record Book in the context of Oily Water Separators and bilge pumping?

<p>The Oil Water Record Book, in addition to bridge and engine room logs, provides a formal and detailed record of all operations concerning waste fluids, including when bilges are pumped overboard using a non-automatic system.</p> Signup and view all the answers

What is the purpose of the Oil Record Book, and what responsibilities does the Engineering Officer of the Watch (EOOW) have regarding its maintenance?

<p>The purpose of the Oil Record Book is to accurately record all operations involving the handling and disposal of oil and oily mixtures. The EOOW must ensure that every event is fully and accurately recorded in the Oil Record Book during their watch, take precautions to prevent accidental discharges overboard, and ensure that the Oily Water Separator (OWS) and 15 ppm detection equipment are working and online when the OWS is in use.</p> Signup and view all the answers

Explain the purpose of the Montreal Protocol and why chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are being replaced by hydrofluorocarbons (HFCs).

<p>The purpose of the Montreal Protocol is to protect the ozone layer by phasing out the production of substances responsible for ozone depletion. CFCs and HCFCs are being replaced by HFCs because it is now known that CFCs and HCFCs can have a destructive effect on the protective ozone layer in the Earth's atmosphere, and as such, have been phased out.</p> Signup and view all the answers

Identify the MARPOL Annex that refers to the prevention of atmospheric pollution from ships.

<p>Annex VI – Prevention of Air Pollution from Ships.</p> Signup and view all the answers

When burning a hydrocarbon fuel, what is the main pollutant gas produced?

<p>Carbon Dioxide is the main pollutant gas produced when burning a hydrocarbon fuel.</p> Signup and view all the answers

Explain how sulfur oxides (SOx) emissions from engine exhaust can be minimized.

<p>Provisions allow for the establishment of special 'SOx Emission Control Areas (SECAs)' (presently the Baltic Sea &amp; North Sea) with more stringent control on sulfur emissions to minimize SOx emissions from engine exhaust.</p> Signup and view all the answers

Describe two methods for minimizing nitrogen oxides (NOx) emissions from engine exhaust.

<p>Possible methods for minimizing NOx emissions from engine exhaust include: (1) Selective Catalytic Reduction (SCR) systems that inject a reducing agent into the exhaust stream to convert NOx into nitrogen and water, and (2) Exhaust Gas Recirculation (EGR) systems that recirculate a portion of the exhaust gas back into the combustion chamber to lower combustion temperatures and reduce NOx formation.</p> Signup and view all the answers

What is the significance of the 15 ppm detection equipment mentioned in the context of the Oily Water Separator (OWS)?

<p>The 15 ppm detection equipment is used to ensure that the effluent discharged from the Oily Water Separator (OWS) does not exceed the maximum allowed concentration of 15 parts per million (ppm) of oil, as per MARPOL regulations.</p> Signup and view all the answers

Explain the potential consequences of failing to accurately record operations in the Oil Record Book or failing to take precautions to prevent accidental discharges overboard.

<p>Failing to accurately record operations in the Oil Record Book or failing to take precautions to prevent accidental discharges overboard can result in non-compliance with MARPOL regulations, which can lead to fines, detentions, or other legal consequences for the ship and crew. Additionally, it can contribute to environmental pollution and damage.</p> Signup and view all the answers

Describe the role of the Engineering Officer of the Watch (EOOW) in ensuring the proper operation and maintenance of the Oily Water Separator (OWS) and associated equipment.

<p>The EOOW is responsible for ensuring that the Oily Water Separator (OWS) and associated 15 ppm detection equipment are working and online when the OWS is in use. This involves monitoring the operation, performing necessary maintenance, and addressing any issues or malfunctions to ensure compliance with regulations and prevent accidental discharges.</p> Signup and view all the answers

Study Notes

Bilge Pumping and Oily Water Separators

  • The recirculation line allows contaminated water to return to the OWS system for review and action by engineers.
  • The sea water inlet valve on bilge pumps helps prime the pump in cases where priming may be an issue.
  • Air release on separator shell is used to remove entrapped air, which can lower the oil/water interface and reduce the separator's effective capacity.
  • Oil content monitor on overboard discharge monitors the oil content of the effluent to ensure it does not exceed 15 ppm.
  • Baffle plates inside the separator shell increase the overall surface area for oily water to pass across, improving separation.
  • Relief valve on separator shell relieves pressure on the OWS shell to prevent damage and collateral damage to system components.

Oil Record Book

  • The Oil Record Book is required by MARPOL to formally record all operations related to fuel, oils, and contaminated fluids.
  • The watchkeeper is required to monitor and control the movements of these substances and record them in the Oil Record Book.
  • The Engineer Officer of the Watch (EOOW) has a direct and legal responsibility for operations ongoing while on watch and is responsible for signing off each completed operation and page.

International Oil Pollution Prevention Certificate (IOPPC)

  • Vessels (other than tankers) over 400 GT are required to carry the IOPPC.
  • The certificate is valid for 5 years, subject to annual and intermediate surveys.
  • Criteria for issuing the certificate include:
    • Having an approved 15ppm OWS.
    • Having an initial survey.
    • Having an Oil Water Record book present.
    • Having an alarm fitted to stop overboard discharge once 15ppm is exceeded.

Shipboard Oil Pollution Emergency Plan (SOPEP)

  • Vessels over 400 GT are required to carry a SOPEP for machinery spaces.
  • The plan must be written in the language of the senior officers onboard.
  • The plan must include:
    • Procedures to be followed when reporting an oil pollution incident.
    • List of persons to be contacted in the event of an incident.
    • Details of actions to be taken to reduce the discharge in case of an incident.
    • Procedures and point of contact for the ship to coordinate with authorities in combating the pollution.

Oil Pollution Prevention

  • The limit on oil discharge is 15 ppm.
  • The Oil Record Book must be recorded in the case of an accidental discharge of oil overboard, including:
    • Time.
    • Position.
    • Approximate quantity discharged.
    • Circumstances or reasons for the discharge.
  • If the content of oil in the discharge overboard is detected as exceeding the limit, the discharge monitor will stop the discharge and redirect the water back to the recirculating line.
  • Conditions that interfere with oil water separation include:
    • Flow rate through the OWS.
    • Detergents and emulsions.
    • Temperature of fluids in OWS.
    • Fouling of the discharge monitor.
    • Fouled internal baffle plates.

MARPOL Convention

  • Annex I refers to the prevention of oil pollution from ships.
  • The fitting of appropriate equipment, including oil-discharge monitoring and control systems, oily-water separating equipment, and filtering systems, is required on vessels over 400 GTR.
  • The Oil Water Record book is required to record all operations concerning waste fluids.

Atmospheric Pollution

  • The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of substances responsible for ozone depletion.
  • Chlorofluorocarbons (CFCs) and Hydrochlorofluorocarbons (HCFCs) are being replaced by Hydrofluorocarbons (HFCs) due to their destructive effect on the ozone layer.
  • MARPOL Annex VI refers to the prevention of atmospheric pollution from ships.
  • The main pollutant gas produced when burning a hydrocarbon fuel is Carbon Dioxide.
  • To minimize pollutants in an engine exhaust:
    • SOx can be minimized by establishing special ‘SOx Emission Control Areas - SECA’.
    • NOx can be minimized by using engines with low NOx emission rates or by using exhaust gas treatment systems.

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Description

Test your knowledge on the purpose of key components in bilge pumping and oily water separators, such as sea water inlet valve, air release on separator shell, oil content monitor, baffle plates, and relief valve. This quiz is based on a question from a reference guide.

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