​The international Sewage Pollution Prevention Certificate- A handy revision guide

The international Sewage Pollution Prevention Certificate

Keeping the coastal seas clean

It is back to the environmental relatated certificates again after the diversion into HSSC.  So far oil and noxious liquids have been covered, both with their own Annex within MARPOL, and this post’s topic also has its own Annex, Sewage.

Why is it required?

It is required by MARPOL Annex IV- Regulations for the Prevention of Pollution by Sewage from Ships

What is sewage?

Sewage means:

” .1 drainage and other wastes from any form of toilets and urinals;

 .2 drainage from medical premises (dispensary, sick bay, etc.) via wash basins, wash tubs and scuppers located in such premises;

 .3 drainage from spaces containing living animals; or

 .4 other waste waters when mixed with the drainages defined above.”

MARPOL Annex IV Regulation 1 – Definitions

What ships require the certificate?

Ships engaged in international voyages that are  400 gross tonnage and above orf less than 400 gross tonnage which are certified to carry more than 15 persons.

How long does the certificate last?

For a period specified by the Administration which shall not exceed five years.

When the renewal survey is completed within three months before the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing Certificate.

When the renewal survey is completed after the expiry date of the existing Certificate, the new Certificate shall be valid from the date of completion of the renewal survey to a date not exceeding five years from the date of expiry of the existing Certificate.

What equipment is covered by the certificate?

Sewage  treatment  plant

Comminuter

Holding  tank

Shore discharge pipeline and connection

What is shown on the certificate?

Ship details

  • Name of  ship
  • Distinctive number or  letters 
  • Port of registry 
  • Gross tonnage 
  • Number of persons which the ship is certified to carry 
  • IMO  Number 
  • New/existing  ship
  • Build date

Equipment details
Description  of  the  sewage  treatment  plant: 

  • Type  of  sewage  treatment  plant
  • Name of manufacturer 

 Description of  comminuter: 

  • Type  of comminuter 
  •  Name of  manufacturer 
  • Standard of  sewage  after  disinfection 

Description of  holding  tank: 

  • Total capacity  of the  holding  tank 
  • Location 

 A pipeline  for  the discharge  of sewage  to a  reception facility,  fitted with a standard shore connection. 

Survey details

Completion date  of  survey  on which this Certificate is based

“Regulation 9 – Sewage Systems

1 Every ship which, in accordance with regulation 2, is required to comply with the provisions of this Annex shall be equipped with one of the following sewage systems:

  .1 a sewage treatment plant which shall be of a type approved by the Administration, taking into account the standards and test methods developed by the Organization,1 or

  .2 a sewage comminuting and disinfecting system approved by the Administration. Such system shall be fitted with facilities to the satisfaction of the Administration, for the temporary storage of sewage when the ship is less than 3 nautical miles from the nearest land, or

  .3 a holding tank of the capacity to the satisfaction of the Administration for the retention of all sewage, having regard to the operation of the ship, the number of persons on board and other relevant factors. The holding tank shall be constructed to the satisfaction of the Administration and shall have a means to indicate visually the amount of its contents.”

MARPOL Annex IV

Note: A Comminutors are used to reduce the particle size of wastewater solids. 

What does it certify? 

That the  ship is equipped with a sewage  treatment  plant/comminuter/ holding  tank  and a discharge  pipeline in  compliance  with regulations 9 and 10 of  Annex  IV of MARPOL.

That the  ship has been surveyed in accordance  with regulation 4 of Annex  IV  of MARPOL.

That the  survey  shows that the  structure,  equipment, systems, fittings,  arrangements and material of the  ship and the  condition thereof  are  in all respects satisfactory  and that the ship complies with the applicable requirements of Annex IV of MARPOL.

What Surveys are required?

An initial survey before the ship is put in service or before the Certificate is issued for the first time

 A renewal survey  not exceeding five years

 An additional survey after any important repairs or renewals are made. 

Some useful links

IMO webpage on MARPOL sewage Annexe 

UK MGN 385 – prevention of pollution by sewage and garbage from ships 

UK MSN 1807 prevention of pollution by sewage and garbage from ships 

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One thought on “​The international Sewage Pollution Prevention Certificate- A handy revision guide

  1. […] International Sewage Pollution Prevention Certificate-MARPOL Annex IV, regulation 5 […]

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