P O W E R B A R G E SFloating power plants for decentralised power generation

2

Turnkey contractorBurmeister & Wain Scandinavian Contractor A/S (BWSC) is a designer, turnkey contractor, operator and investor in medium to large-scale power plant systems. Our main activities are: EPC of engine-based power plants and barges, turnkey biomass power plants, Generation Services and Investments in BWSC-built power projects.

EPC provider of power plants and bargesBWSC is a world-leading turnkey contractor. Modular design concepts and the flexibility to choose the best available technology from leading manufacturers enable BWSC to offer customised and competitive solutions in the range of approx. 10-300 MW, with medium and large sized diesel and gas reciprocating engines, land-based or barge-based.

Generation ServicesBWSC Generation Services provide a comprehensive range of post-construction services to power plants, ranging from spare parts supply, training courses, upgrades and rehabilitation of older power plant systems to technical service agreements and Operation and Maintenance (O&M) contracts.

Investments and co-ownershipBWSC takes a leading role in the development of IPP projects, comprising establishment of commercial and legal agreements, financing, insurance, etc. We consider equity participation and co-owner status relating to projects built and operated by BWSC.

Benefits for our customers and partnersBWSC is dedicated to meeting our contractual obligations in terms of timely delivery, technical performance and environmental compliance of our power plant and barge projects. We have supplied more than 182 power plants to 53 countries with a total generating capacity of more than 3500 MW.

In the delivery of floating power plants, we are committed to partnering with experienced high-quality marine engineering companies to ensure a Class Approved floating structure together with main equipment manufacturers providing the most advanced generation technologies available. This to ensure proven efficiency and environmental compliance in a low-risk and reusable asset.

B W S C – Y O U R G L O B A L E N E R G Y P A R T N E R

3

F L O A T I N G D I E S E L P O W E R P L A N T S

3

Floating power plants or power barges are the same ‘tried and tested’, modular generating equipment, power house, auxiliary systems and electrical export options normally associated with traditional land-based diesel power plants. Guaranteed performance figures, output, heat rates, etc, and long-term maintenance costs are basically the same.

Instead of a turnkey EPC package built onto engineered, piled, reinforced, heavy concrete foundations, dictated by local soil conditions and land prices, the complete power plant package is mounted on a pre-engineered, heavy steel, rigid floating box.

The barge is designed and constructed to Marine Classification Standards and delivered to the selected site by ocean tow or heavy lift ship.

Where and when to consider a power bargePower barges are not for every generation application, but can offer certain advantages over land-based plants:

Manufacture of the floating box structure and installation of the generation equipment can be conducted at most shipyards and marine construction facilities. The advantages are attractive prices, high productivity, regional financing incentives, and relatively short lead times.

A well designed power barge, utilising established technology, is a low-risk mobile asset, easily financed with little or no stranded costs. Once a Power Purchase Agreement (PPA) has terminated, the barge can be removed and relocated to another site, ensuring an extremely high asset value and minimum impact on local environments.

A power barge can be rapidly delivered and moored in sheltered coastal areas, river estuaries, on existing docks or at a primitive sheet piled wharf, independent of local resources, unsatisfactory infrastructure or poor soil conditions. Barges can also be floated into dredged-out areas and back-filled to form virtual land-based plants that can be removed at some point in the future.

Handling of a 100 MW power barge 60 MW power barge installed in the Port of Colombo, Sri Lanka

4

L A Y O U T A N D F E A T U R E S

4

Protected MV cableways, raised walkways and gratings throughout for inspection and maintenance, including pre-established removal routes for major components

Hull coating system specified for maximum service life

Impressed current, cathodic protection system with additional zinc anodes in ballast tanks and sea chests

Fuel treatment equipment in ventilated, fire-protected, separate compartments and built-in, insulated, fuel tanks

Fixed CO2 and/or foam fire fighting

system for protection of main machinery space, with seawater fire and deck-wash systems connected to on-shore systems

Steel-framed, insulated, power house building, for generating equipment, incorporating forced air ventilation, overhead crane, and roof- mounted radiators

5

L A Y O U T A N D F E A T U R E S

5

Mooring brackets for wharf and fixed pile-mooring system to limit vessel motions

Principal particulars - barge designLength: 65-90 m Width: 35/39 m Depth: 5.4 mDraft (operating): 3.6 mHeight (to top of stacks): 40 m

Class certificated +A1 Barge class inland waterways.Designed to withstand hurricane winds.

Sound-insulated steel deckhouse, housing air-conditioned day crew accommodations, control room, MV and LV rooms, office, work shops, tool room and utility spaces

Work shop/tool room for onboard maintenance and repairs

Indoor storage capacity for plant consumables and spare parts

Substation with step-up transformer(s), dead-end structure and all other HV equipment installed on deckhouse top in secure areas complete with protective fence

Flexible connections for all fuel supply and fluids

Grouped exhaust gas stacks to ensure dispersal (World Bank guidelines), waste heat recovery boilers for fuel heating

6

BWSC barges are designed around modular installations of engines, generators and auxiliary equipment on a uniform barge structure that can be lengthened or shortened according to the number of generators required for the output.

Output is between 60 and 150 MW on HFO, diesel, dual fuel or natural gas at either 50 or 60 hz at normal HV exporting voltages.

Typical mechanical scopeDepending on the output, between 4 and 8 large-bore, 4-stroke, medium-speed, turbocharged diesel engines supplied by major manufacturers:

• Lube oil systems, incl. coolers, pumps and separators for lube oil by pass cleaning

• Low noise roof-mounted variable speed radiator-cooling systems or, alternatively, raw water cooling with central plate type coolers

• Fuel treatment and handling systems for natural gas or HFO and diesel fuel oil

• Combustion intake air filter and silencer systems• Grouped exhaust gas stacks incl. silencers and waste heat

recovery boilers for fuel heating• Forced air inlet fans with silencers for machinery spaces• Building exhaust vents with silencers• Compressed air systems• Black start diesel generator set• Water treatment system

Typical electrical scope• Synchronous AC generators, brushless, air-cooled and

flexibly coupled to the engines• 13.8/15 kV switchgear with feeders and coupling panels• 2 x HV step-up transformers, 2 x station auxiliary

transformers and LV distribution and lighting system• DC system with dedicated battery room• Computer-based monitoring,Operation

and Maintenance diagnostic system• HV dead-end structure• Barge-neutral earthing system

D E S I G N A N D T E C H N I C A L S C O P E

Typical scope for shore site optionsWharf to barge concrete ramp(s) and articulated access bridge with all pipes, flexible sections and respective supports for connection to clients’ systems for:

• Potable water inlet • Grey water outlet • Sewer outlet• Natural gas, HFO, LFO & lube oil supply

Larger buildings for workshop and office facilities, tank farms and switchyards can be included in the EPC scope.

7

O N E S O L U T I O N , M U L T I P L E A P P L I C A T I O N S

7

Power barge hulls can be constructed in one location and easily moved to another location for specialist equipment outfitting, testing and commissioning. Finally, the barge will be heavy-lift shipped to the final site, ensuring a high quality, tested working facility virtually anywhere in the world.

Whether the floating power plant is EPC-purpose-built to satisfy specific PPA conditions or developed as a long-term lease facility for temporary or emergency situations, BWSC’s technical and commercial expertise ensures a bankable PPA, a high-value mobile asset and reliable power at short notice.

Development and commercial supportBWSC is an experienced developer of both boiler and engine-based power projects. Our hands-on approach from the early development stage to financial close has brought BWSC to a leading position as an IPP developer and investor in Europe, Africa, Latin America and Asia.

BWSC supports customers and partners from concept to implementation and through long-term operation with services including:

• Origination and evaluation of IPP opportunities• Setting up of joint development partnerships• Full project development to financial close• Management of tender processes• Negotiation of main IPP contracts including PPA, fuel

supply contracts, leases, etc.• Capital-raising from equity investors, pension funds and

lenders including export credit agencies• Project finance structures• Active ownership and asset management• Medium and long-term facility lease complete with O&M

On location overhaul of engine

Service and support is our businessBWSC offers fixed-price O&M agreements backed by guarantees, mitigating risks and ensuring reliable performance at fixed cost.

Specialist trouble-shooting staff and the required spare parts to ensure minimum down time can be mobilised at very short notice. Our O&M and support agreements are completely flexible and tailored to suit your requirements and the specific power installation.

BWSC is qualified according to ISO 9001.

Burmeister & Wain Scandinavian Contractor A/S

Burmeister & Wain Scandinavian Contractor A/SGydevang 35DK-3450 AllerødDenmark

Phone: +45 4814 0022Fax: +45 4814 0150

bwsc@bwsc.dkbwsc.com

02/2017

BWSC A/S is a subsidiary company of Mitsui Engineering & Shipbuilding Co. Ltd. (MES), which is the senior licensee of MAN Diesel & Turbo SE since 1926 and a principal producer of advanced MAN B&W 2-stroke diesel engines. BWSC was established as a separate company in 1980 with the aim of applying the highly efficient diesel technologies to the development of power plants.

BWSC has demonstrated solid results for the last 15 years and has obtained long-standing AAA credit rating and a Silver diploma by Bisnode. In 2015, BWSC’s annual revenue was EUR 283 million.

BWSC is headquartered north of Copenhagen, Denmark, and has representative offices worldwide to support international marketing activities. In addition, BWSC has established a number of local companies to undertake operation and maintenance of power plants producing electricity for national power utilities in a number of countries.