Ballast Water Management Convention - Intertanko€¦ · •BWM Plan •Sequential •Flowthrough...

Jad Mouawad

2011-10-04

BW

M-2011-23

Ballast Water Management Convention

Status, installations and experiences

© Det Norske Veritas AS. All rights reserved.


2011-10-04

Agenda

Status

• Ratification

• Entry into force

Standards

• Performance

• Safety

Experiences

• New Buildings & retrofits

• New Buidlings projects, comments and failures

• Retrofits projects, comments and failures

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2011-10-04

Agenda

Status

• Ratification


Standards

• Performance

• Safety

Experiences




3



2011-10-04

Denmark 29th country? Panama 30th?

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Status: 28 of 30 parties & 25.43% of 35% tonnage required for entry into force

Party Local requirements Party & local requirements

October 4, 2011 5

2011 2012 2013 2014 2016 2018

Ratification Entry into force

Intermediate or Renewal survey

Anniversary date in 2016

12 months

Exchange or Treatment

Treatment



2011-10-04

Agenda

Status

• Ratification


Standards

• Performance

• Safety

Experiences




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2011-10-04

777

• Capacity

• Bypass

• Other operations

• Auxiliary systems

• Chemical storage

• Corrosion

• Water remains

Installation requirements - Performance



2011-10-04

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Arrangement of compartments

- Complete treatment system in a

separate compartment

- Single componets can be stored

- Zone 1 with low flash point

- Ventilation of hazardous spaces

rules to be followed when low flash

point

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Treatment system in engine

room

- Chemicals/gases far below

established standards

- Escape always possible

- Masks/suits available in cases of

emergency

Steel deck Ventilation:

- Separate

- Exhaust

- 30 air changes/hr

- Single failure proof

Thin ventilation

ducts not allowed

Gas tight

- Self closing

- Opens outward

300mm sill

height

Installation requirements - Safety



2011-10-04

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Liquid chemicals storage

tanks stowed in the engine

room• Flash point not exceeding 60°C not

accepted

• Well ventilated space

• Easy inspection and filling access

• Approved construction with

suitable material

• Air pipes to open deck

• High level alarm (can be combined

with level gauging system)

• Drip trays

• Signs on tanks

• Manual for filling, emergency etc.

• Protective clothing (2 sets)

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Installation requirements - Safety



2011-10-04

Agenda

Status

• Ratification


Standards

• Performance

• Safety

Experiences




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2011-10-04

New Buildings & retrofits - Scope

� Statutory

- Certificate of Compliance

- Statement of Compliance

� After ratification

- International Ballast Water Management

Certificate

� Full compliance with DNV Rules Pt.6

Ch.18 Sec.4

� Flag acceptance of type approval

certificate � manufacturer

� Class

- BWM-T notation

- Equivalent to Statement/Certificate

- DNV Rules Pt.6 Ch.18

� If no notation or Statement/Certificate

are requested

- Minimum safety standard in DNV Rules

Pt.6 Ch.18 Sec.4 must be followed

- Thorough review for the first installation to

establish safe standard

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2011-10-04

New Buildings & retrofits – Approval & Surveys

Approval

(DNV Rules Pt.6 Ch.18)

Exchange•BWM Plan

•Sequential

•Flow through

•Dilution

•Sediment management

•Sampling

Treatment•Control & Instrumentation

•Piping systems

•Bypasses

•Capacity

•Foundation (if necessary)

Surveys

(Reg. E-1)

Exchange•Documentation

•Sampling

•Openings for flow through

Treatment• Installation

•Commissioning

•Documentation

• No sampling for organisms required by Regulation E-1

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2011-10-04

Retrofits - Scope

Piping systems

•P&ID of ballast system

•Any related arrangements like ventilation, drainage etc.

Electrical systems

•Drawings of the MSB modification

•Updated electric load balance

•Updated electrical power single line diagram

•Selectivity evaluation of the largest new breakers introduced into the main switchboard vs. the generator breakers.

• It should be evaluated whether new short circuit calculations are found necessary

Control systems

•System block diagram

•Power supply arrangement

•List of controlled and monitored points

•Description of interface towards the ship’s existing systems

Structure and stability

•Depending on the ratio of the added weight to the ship’s light weight, new stability calculations may be required.

•Any reinforcements needed due to the added elements may be required to be approved.

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2011-10-04

Experiences – New Buildings

� Projects – ship types

- Drilling rigs: 2

- Tankers: 3

- Ore Carriers: 1

- Supply ships: 14

- Container Carriers: 1

- Car Carriers: 4

- Bulk Carriers: 3

- Heavy lift: 4

- Naval: 1

- General cargo: 1

- Gas carriers: 1

� Projects – manufacturers:

- Alfa Laval: 13

- Optimarin: 5

- Oceansaver: 2

- Unitor: 3

- NK-O3: 1

- Panasia: 3

- Techcross: 1

- Hydemarine: 3

- NEI: 1

- Oceanguard: 2

- Greenship: 1

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2011-10-04

New Buildings – Typical comments

• Ballast water must be treated before mixed with ejector

• Usually a challenge as ejector will loose effectStripping system

• Capacity must always exceed that of the ballast pump; or

• Flow control requiredCapacity

• Stripping system ok

• How much water upstream?Water remains

• Gravity discharge only ok when system treats one wayBypasses

• Separate treatment room

• Ventilation outletsSafety

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2011-10-04

New Buildings – Typical failures

• Clogging, frequent back flushing

• Bigger discharge line

• Larger back-flush pump

• Lower BW capacity

Filters

• Control systemsOperation

• Not possible to empty tankWater remains

• Difficult operation to avoid contaminationSea trials

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2011-10-04

Experiences – Retrofits

� Projects – ship types

- Passenger/Cruise: 3

- Chemical tankers: 1

- Oil tankers: 1

- Asphalt tankers: 1

- Supply ships: 1

- Container Carriers: 1

- Car Carriers: 3

- Bulk Carriers: 1

- General cargo: 1

� Projects – manufacturers:

- Fresh water/no ballast: 3

- Optimarin: 1

- Oceansaver: 2

- Unitor: 2

- NEI: 1

- JFE: 2

- Severn Trent De Nora: 1

- Place only: 1

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Possible during dry dock period/renewal period?



2011-10-04

Retrofits – Typical comments

• Ballast water must be treated before mixed with ejector

• Usually a challenge as ejector will loose effectStripping system

• Accepted equivalent to one pump; or

• Flow controlCapacity

• Stripping system ok

• How much water upstream?Water remains

• Gravity discharge only ok when system treats one way

• Blank flanges on all bypass lines or non-return valvesBypasses

• Separate treatment room always a problem

• Ventilation outletsSafety

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2011-10-04

Retrofits – Typical failures

• Clogging, frequent back flushing

• Bigger discharge line

• Larger back-flush pump

• Lower BW capacity

Filters

• Missing scope, planning, many revisions

• Misjudge place needed for valves, bends etc.Fittings, missing

drawings

• Connection to switchboard - blackouts

• Load balance – must take out some other equipment

Electricalsystems

• Not so good experience

• Some agents claim to have good experienceRiding crew

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2011-10-04

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Safeguarding life, property

and the environment

www.dnv.com

Ballast Water Management Convention - Intertanko€¦ · •BWM Plan •Sequential •Flowthrough...

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