SECTION 1 : EXECUTIVE SUMMARY This proposal describes the supply of 2 off MAN B&W Diesel Ltd, 18VP185 industrial generator drive engines for FG Wilsons, BBC Phase 2 Project The 18VP185 is the most recent development of the VP185 engine range and incorporates state of the art technology with proven reliability. There are over 295 VP185 engines engines in service or on order, examples having run run 24,000 hours of operation to major overhaul. overhaul. The VP185 has amassed over 1,000,000 1,000,000 hours experience, experience, including a high proportion of operational hours at low power and/or idling and offers the following major benefits :High availability (typically in excess of 95%). Low fuel consumption. c onsumption. High output power at 1500 and 1800 rpm. Highly competitive through life costs. Customer support is a major concern for engine operators and the VP185 package is supported by a comprehensive worldwide service ne network. twork. This enables MAN B&W Diesel Diesel Ltd to provide our customers customers with support 24 hours, hours, 365 days a year in many regions of the world. In addition to representing excellent capital value, the VP185 offers competitive fuel consumption and through life costing. If required this can be supplied based upon the engines expected expected operating profile.
SECTION 2 : PERFORMANCE SPECIFICATION Engine Data MAN B&W Diesel Ltd 18VP185: No. of Cylinders
18
Configuration
90° Vee
Operating Cycle
4 Stroke
Bore
185 mm
Stroke
196 mm
Swept Volume per cylinder
5.27 litres
Compression Ratio
13.1:1
Combustion System
Direct Injection
Charge Air System Rotation (looking on flywheel)
2 stage intercooled and aftercooled Anti-clockwise
Thread System
SI Metric and BSP
Approximate Engine Dimensions : Length
3,999 mm
Width
1,490 mm
Height
2,245 mm
Dry Weight
10,210 kg
Sump Capacity Min/Max
328/388 litres
Primary Coolant Capacity
300 litres
Secondary Coolant Capacity
125 litres
This offer is for a 18VP185 running at a constant speed of 1500rpm, at site conditions of : Air Intake temperature Max Altitude Secondary water return temperature Voltage for Auxiliaries
40 ºC Sea Level 60 ºC 380 / 440 Volts, 3 phase at 50 / 60 Hz.
SITE POWER OUTPUT Based on the above site conditions the rating for the engines offered would be: Continous Power Output (COP):
3250 kWb + 10% Overload for 1 hour in 12
NOISE SPECIFICATION A typical noise spectrum for the basic engine can be provided if required.
STARTING TIMES & LOAD ACCEPTANCE Start times and load acceptance capabilities are dependent on the inertia of the alternator. Typically based on an alternator inertia of 140 kgm², the engine would be firing and accelerating after 5 seconds and at rated speed after 12 – 15 seconds. Note: this is based on the assumption that engine is conditioned i.e. engine jacket water heaters are on and up to temperature (45°) and oil is primed. Once the engine has reached synchronous speed the engine can be loaded in stages. Based on a typical alternator inertia of 140 kgm², the engine will accept a 40% load step (from zero).
SECTION 3 : PRICE SCHEDULE The following prices relate to the scope of supply defined in section 4 of this document and are offered in pounds sterling, net of all taxes, ex-works in accordance with INCOTERMS 2000. 2 off MAN B&W Diesel Ltd, 18VP185 Industrial diesel engine as detailed herein: PROJECT PRICE SCHEDULE AND OPTIONS (Per Engine) 18VP185 Industrial diesel engine Triplex Lub Oil Filter Crankcase breather stub pipe without flexible pipe Simplex fuel oil filter (standard) Electrically operated shutdown flaps (standard) Standard crankcase doors Electric LO priming pump • • • • • •
The following additional options are included in the total contract price: Air Driven starter motor with regulating valves Additional air start motor (fitted) with regulating valve Primary water heater module Air valve lubricating oil system (AVLOS) Set of exhaust flexible bellows and joints 3 into 1 exhaust adaptor Standard aluminium panel type air filter Woodward with load share in lieu of standard Woodward system Set of temperature/pressure transducers Single exhaust thermocouple Flexible coupling Manual barring gear • • • • • • • • • • •
SECTION 4 : 18VP185 SCOPE OF SUPPLY ITEM 4.1
INDUSTRIAL 18VP185 ENGINE EQUIPMENT
Note: Unless otherwise stated, items are to standard MAN B&W Diesel Ltd specifications. All auxiliary items are rated at 380 / 440 Volts, 3 phase at 50 / 60 Hz.
4.1.1
BASE ENGINE
Flywheel Engine flywheel SAE21 with starter ring. Engine flywheel housing SAE “00”. Barring gear to manually turn the engine to facilitate maintenance. Engine Mounting One set of engine feet. Torsional Vibration Torsional vibration damper fitted at the crankshaft free end.
4.1.2
STARTING SYSTEM
Pneumatic Starting Systems Two turbine type Air start motor 1 x 10 bar with governor boost unit (Duty & Standby). Air pressure reducing valves supplied loose allowing the stored air pressure (max 40 Bar) to be reduced to the correct working level. Complete with safety and shut off valves. STARTING AIDS Primary Water Pre Heating Primary water heater unit rated at 9 kWe. Includes heating elements and circulating pump mounted on frame and wired. Lub Oil Pre Heating Lub Oil preheating not included.
4.1.3
COOLING SYSTEM
PRIMARY CIRCUIT (FRESH WATER) Fresh water coolant is circulated through the crankcase jacket, cylinder heads, turbocharger and exhaust housings and the high pressure charge air aftercooler by a free end mounted gear driven circulating pump. The system is fitted with a thermostatic valve for temperature control. Primary circuit coolant header tank by others.
SECONDARY CIRCUIT Secondary water is circulated through an engine mounted plate type lubricating oil cooler, high pressure charge air aftercooler and the three low pressure charge air intercoolers by a gear driven pump mounted at the free end of the engine. Thermostatic valve. Secondary circuit coolant header tank by others.
4.1.4
LUB OIL SYSTEM
Wet sump Externally mounted gear type pump Pressure relief valve Lubricating oil thermostatic bypass control valve Plate type lubricating oil cooler (secondary water cooled) Filler and strainer Dipstick Triplex lub oil filter mounted on engine. Crankcase breather stub pipe. Air Valve Lubricating Oil System (AVLOS). Mechanically driven lubrication pump to provide lubrication to valve rockers. Fitted to engine. Required for continuous operating power applications running for 1000 hours or more per year. PRIMING PUMP & PIPING Electric motor driven lub oil priming pump, off engine unwired suitable for continuous or intermittent priming. Rated at 2.2 kW, complete with starter. Flexible connections not included. Pump control to be via start sequence logic in engine control panel.
4.1.5
FUEL OIL SYSTEM
Combined fuel pumps and injectors Fuel reservoir Fuel oil cut-off valve Feed pump - suction lift 2000 mm from crankshaft centre line Simplex Fuel Oil Filter.
4.1.6
EXHAUST SYSTEM
The exhaust system is of pulsed design, feeding a 2-stage turbocharging system with three exhaust outlets. The exhaust system is enclosed in fresh water-cooled, gas tight casings. Set of Flexible bellows and joints for connection between engine and exhaust ducting. A “three into one” adapter for combining the three exhaust outlets into a single duct, complete with joints.
4.1.7
ASPIRATION AIR SYSTEM
AIR INLET SYSTEM 6 low-pressure turbochargers deliver first stage air to the intercooler. 3 high-pressure turbochargers delivers second stage charge air to the aftercooler. Electrically operated Shutdown flaps, which are designed to starve the engine of aspiration air in case of emergency. (Designed energised to shutdown). AIR FILTERS Single stage panel type air inlet filters, having corrugated, washable elements of dry polyester media backed by wire mesh, bracket mounted to each bank of the engine.
4.1.8
GOVERNING SYSTEM
Woodward UG Actuator with Woodward 2301A Speed Controller with Load Share. 2301A has load sharing ability and self contained load sensor. Variable droop or isochronous load share operation. Start fuel limit and failed speed sensor detector. Graduated output lever. Governor boost unit (With Air start Engines only).
4.1.9
SAFETY SWITCHES & TRANSDUCERS
Note: All switches and transducers are supplied fitted and unwired. 2 stage switches and brackets 24V D.C. unwired as follows; High primary water temperature. High secondary water temperature. Low lub oil pressure. High lub oil temperature. Fail to prime (single stage). Low Start Air Pressure (if applicable) 1 Speed sensing switch 24V D.C. (loose) complete with engine mounted electronic magnetic pick up (unwired). Functions are: Disengage starter motors. Engine running signal. Engine ready to load. Overspeed.
Note: As standard the speed sensing switch is suitable for 0–1 mA output, representing zero to full speed. Single exhaust thermocouple supplied loose for fitting by client into exhaust ducting to give a general indication of overall exhaust temperature. Set of temperature transducers (4 – 20 mA) for monitoring Charge air temperature Primary water temperature Secondary water temperature Lub oil temperature
Set of pressure transducers (4 –20 mA) for monitoring Charge air pressure Lub oil pressure (Before & After filter) Fuel oil pressure Primary water pressure Secondary water pressure
4.1.10 FLEXIBLE COUPLING Suitable flexible coupling supplied loose, bored for alternator shaft. Note: coupling selection can be confirmed once full details of your alternator/rotor inertia has been advised.
ITEM 4.2 4.2.1
TERMINATION POINTS
ENGINE RELATED TERMINATION POINTS
See General Arrangement drawing:- 80-798-00235-000 - Available on request.
ITEM 4.3 4.3.1
SPARE PARTS AND TOOLS
SPARE PARTS
No spare parts have been included.
4.3.2
TOOLS
No running tools have been included. No Fuel Injection tools have been included.
4.3.3
ENGINE LIFTING
No Lifting Equipment will be supplied.
ITEM 4.4 4.4.1
GENERAL SERVICES
WORKSHOP TESTS AND ACCEPTANCE
After preliminary shop tests, each engine will be given an acceptance test to MBDL standard industrial drive test schedule. During the tests, pressures temperatures etc. will be measured and recorded on an engine test sheet. Copies of the test sheet are provided with the contract. Witness of MBDL’s standard engine test by customer. (option)
4.4.2
PAINTING
Paint finish to MAN B&W Diesel Ltd standard.
4.4.3
PRESERVATION
Standard preservation included as follows: -
Engine run on Shell Oil R3325 combined running-in and temporary corrosion prevention oil.
-
Engines run on Shell calibration fluid ‘C’ prior to final shutdown, fuel system sealed.
-
Coolant systems drained.
-
Sump drained.
-
Inside of engine sprayed with Shell Ensis Oil ‘N’.
-
External bright or machined surfaces protected with Shell Ensis ‘V’.
-
Labels attached - “engine treated with rust preventative and should not be turned over”.
The above preservation is suitable where the engines are being delivered to site immediately after test or if the storage is not going to exceed 12 months after test under dry, indoor storage conditions.
4.4.4
WOODEN TRANSIT CRADLE
The engine will be fixed to a purpose made wooden transit cradle and covered with a polythene sheet.
4.4.5
QUALITY AND INSPECTION
MAN B&W Diesel Ltd engines are designed and manufactured to the highest quality standards meeting the stringent demands of ISO 9001, BS 5750 and Lloyds Quality Assurance Scheme for Machinery. All equipment will be inspected to MAN B&W Diesel Ltd own procedures before despatch. Expediting inspections may be undertaken at various build stages by a Customer Representative.
