06 Sanitary and FW System in E/R

Course 2004

Slide 2

� Purpose of the rules and regulations;

Sanitary and FW System - E/R

� To achieve safe and reliable supply of fresh water and drinking water to the consumers.

� To achieve safe and reliable sanitary systems.

Slide 3

� Fresh Water System :

Sanitary and FW System - E/R

The basic class piping system requirements to be implemented.

There are no detailed convention or class requirements as to the design of this system.

ILO Convention No. 92 and 133 require provision of toilets, means of laundry, etc.

Also, fresh water is needed for cleaning purpose and to supply cooling water system, etc. in the engine room.

Slide 4

SANITARY & F.W. CERVICE SYS.

Slide 5

Fresh Water Generator

� The freshwater generator convert sea water or exhausted dirty water to pure water for drinking and boiler make-up on ship.

� Sea water is evaporated at about 45~50ºc using a heat source, separating pure water from salt, sediment and other elements.

� Freshwater generators often use the diesel engine jacket as a heat source, although steam can also be used as a heat source.

Slide 6

Fresh Water Generator

� Fresh water generator consists of vaporizer, condenser, demister, salinometer, distillate pump, ejector and steam injector.

Slide 7

FRESH WATER GENERATER

Titanium Plate Type

Slide 8

Fresh Water Generator

� If the salinity exceeds a specified level, usually between one and ten parts per million, the freshwater generator will automatically return the water to the feed line and put it through the cycle again.

Slide 9

� Sanitary Discharges :

Sanitary and FW System - E/R

q ILO Convention No. 92 and 133 require the provision of toilets.

q The International Convention for the Prevention of Pollution from Ships - MARPOL Annex IV - regulation for the prevention of pollution by sewage from ships put forward requirements to this system.

q The International Convention of Load Lines - ICLL Regulation 22 puts forward requirements for to sea discharge piping system.

Slide 10

Sanitary and FW System - E/R

� MARPOL Annex IV : In force from September 27 2003

� Applicable for ship newbuildings with contract date or keel laying date after this date; or

� Ship newbuildings with delivery date on or after September 27 2006

- Hence relevant for all our newbuildings now!

� Applicable for existing ships from 27 September 2008

Some Flag States have got special requirements (e.g., Greece, US).

Slide 11

� Application ;

Sanitary and FW System - E/R

1. New ships of 400 GRT and above.

2. New ships of less than 400 GRT which are certified to carry more than 15 persons.

3. Existing ships of 400 GRT and above, 5 years after the date of entry into force, e.g. from 27 September 2008.

4. Existing ships of less than 400 GRT which are certified to carry more than 15 persons, 5 years after the date of entry into force, e.g. from 27 September 2008.

Slide 12

� Definition sewage ;

Sanitary and FW System - E/R

1. Drain and other wastes from any from of toilets and urinals.

2. Drain from medical premises via wash basins, wash tubes and scuppers located in such premises.

3. Drain from spaces containing living animals.

4. Other waste waters when mixed with the drains defined above.

Hence if grey water systems or tanks are connected with sewage systems, also the grey water system will have to fulfil the requirement as for a sewage system (including renaming of tanks)

Slide 13

� Ships shall be equipped with one of the following sewage systems;

Sanitary and FW System - E/R

1. A sewage treatment plant type approved by the administration.

To be in compliance with the standards and test methods as put forward in Resolution MEPC. 159(55)

2. A sewage comminuting and disinfecting system approved by the administration.

Temporary storage facilities to the satisfaction of the administration when the ship is less than 3 nautical miles from nearest land.

Slide 14

Sanitary and FW System - E/R

3. A holding tank of capacity to the satisfaction of the administration for the retention of all sewage.

Tanking the operation of the ship, the number of persons onboard and other relevant factions into consideration.

The tank shall be constructed to the satisfaction of the administration and shall have means to indicate visually the amount of its contents

� Ships shall be equipped with one of the following sewage systems;

Slide 15

� Discharge of sewage ;

Sanitary and FW System - E/R

1. Sewage which not is disinfected or comminuted

When more than 12 NM from nearest land. Sewage shall be discharged at a moderate rate at a speed not less than 4 knots.

discharge only

2. Sewage which has been comminuted and disinfected

When more than 3 NM from nearest land. Sewage shall be discharged at a moderate rate at a speed not less than 4 knots.

discharge only

Slide 16

� Ships shall be provided with standard discharge connections (port & starboard side).

Sanitary and FW System - E/R

Description Dimension

Outside diameter 210 mmInner diameter According to pipe outside diameterBolt circle diameter 170 mm

Slots in flange4 holes 18 mm in diameter equidistantly placed on abolt circle of the above diameter, slotted to the flangeperiphery. The slot width to be 18 mm.

Flange thickness 16 mmBolts and nuts:quantity, diameter

4, each of 16 mm in diameter and of suitable length

The flange is designed to accept pipes up to a maximum internal diameter of 100mm and shall be of steel or other equivalent material having a flat face. This flange,together with a gasket, shall be suitable for a service pressure of 6 kg/cm2.

Standard dimensions of flanges for discharge connections

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� Reception facilities ;

Sanitary and FW System - E/R

Parties to the convention should ensure that port/terminal facilities for

reception is available without causing delay to ships.

Slide 18

Sanitary and FW System - E/R

SEWAGE

TREATMENT

PLANT

VACUUM TOILET

SYSTEM

SEWAGE

HOLDING TK

ACCOMM.

BILGE

HOLDING

TANK

TANK 1 TANK 3TANK 2

BLACK WATER BLACK WATER

FUNNEL TOP

TO BILGE HOLD TK

(FOR EM’CY OVERFLOW)

FM F.W SERVICE LINE

B.W.L

GREY WATERFM WASTE

DISPOSER

FISH

ROOM

MEAT

ROOMLOBBY VEGIT

ROOM

VACCUMARATOR

FM FIRE/DECK WASH

LINE FOR CLEANING

IMO STANDARD SEWAGE

INTERNATIONAL CONN.

WITH BLIND FLANGE

GREY WATER

UPPER DECK

PI

PI

Slide 19

Sewage overboard

� Sewage treatment plant regarded as “inboard end”

� Loop and non return valves to be in accordance with load line and SOLAS (Pt.3 Ch.3 Sec.6 Table K1)

*) Correction due to SOLAS II-1 Reg.17, 9.2.1

*)

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Sewage Treatment Plant

Slide 21

Sewage Discharge Valve

Slide 22

Sewage system

� Case 11: Please consider the following questions:

1) Hospital drains are led to the grey water tank- what are the consequences?

2) Treated sewage from a sewage plant is led overboard with only one non return line with local operation only on the ship side- how high up must the loop be led?

3) When is it acceptable to discharge untreated sewage directly over board?

Slide 23

� References ;

Sanitary and FW System - E/R

q DNV Rules for Ships Pt.4 Ch.6

q International Convention on Load Lines 1966

q ICLL Regulation 22

q MARPOL 73/78 as amended Annex IV

q ILO Convention No. 92 Article 13

q ILO Convention No. 133 Article 9