INCE POWER STATION
THE RT. HON. LORD CITRINE, P.C., K.B.E., LL.D., Comp. I.E.E
Chairman, Central Electricity Authority
9th October 1957
RT. HON. LORD CITRINE, P.C., K.B.E., LL.D., Comp. I.E.E
Chairman, Central Electricity
Chairman, Central Electricity
CENTRAL ELECTRICITY AUTHORITY
North West, Merseyside and North Wales Division
INCE POWER STATION
At the end of 1949
it became apparent that the future power demand of the atomic factory at
Capenhurst (owned then by the Ministry of Supply and now by the United
Kingdom Atomic Energy Authority) would be such that the construction of a
new power station in the Wirral peninsula of Cheshire was essential.
A site was therefore sought within the limiting areas specified by
the Ministry of Supply and after investigation the present location was
chosen. This is situated on the edge of the Ince marshes, near Elton
village, and immediately to the north of the Frodsham-Ellesmere Port
The station, now fully
completed, has a total capacity of 240,000 kilowatts made up of four
60,000 kilowatt turbo-alternators, each of which is supplied with steam
from a boiler of 550,000 lb. per hour capacity.
Each boiler and its associated turbine operate as a complete
unit, no interconnection of boilers being included in the design.
As a result of a study of some
aspects of American boiler design by the Authority's engineers, it was
decided in view of the need for speed in construction and the conservation
of scarce building material and labour that the boilers at Ince should be
of semi-outdoor construction; this approach being a compromise between a
completely outdoor arrangement and the conventional totally enclosed
Coal is delivered to the station
by rail, normally from the East Midlands coalfields, and large sidings
with a coal storage area have been provided on the site.
Ince, however, is one of 16
power stations, which it was decided at national level to adapt for oil
firing. The construction of
the station was well advanced when it became apparent that the country's
future power requirements could not be obtained solely from coal and
investigations were therefore made at a number of power stations into the
possibility of adapting boilers for dual firing, i.e. to be made capable
of burning heavy fuel oil as an alternative to pulverised coal. At Ince,
as at other stations, conversion was found to be practicable and the
additional plant and equipment was planned.
Ince power station
supplies of water, both for boiler and cooling tower make-up, are pumped
from the River Dee at Chester through a pipeline constructed
specifically for Capenhurst, Ince power station and industrial
development in the Ellesmere Port district.
The water scheme has been provided by the West Cheshire Water Board
and has entailed participation in the Bala Lake Scheme.
A reservoir is under construction on the high ground at Ince
village for the purpose of emergency water supplies in the event of a
failure of the normal make-up quantity.
83 acres of land was acquired to accommodate the station and as a result
of trial borings, the main buildings were located at a point where the
load bearing sandstone approached its highest level.
After the removal of 14 feet of top soil and other low load bearing
material, it was possible to erect the main buildings directly on the hard
bound sand, thus eliminating the necessity for piled foundations.
The cooling towers and the north chimney did require piling as the
sandstone formation falls away sharply from the main station site.
Rendel, Palmer & Tritton were appointed by the Authority as Civil
Engineering Consultants, all Mechanical and Electrical plant in the
station being engineered directly by the Authority.
Excavations for main buildings
CIVIL ENGINEERING WORK
basement to the boiler and turbine houses has a reinforced concrete floor
and reinforced retaining walls enclosing the whole area, both floor and
walls being provided with an external layer of waterproofing material.
The circulating water culverts are constructed in reinforced
concrete beneath the turbine house floor level. The turbo-alternator
blocks are also constructed of reinforced concrete and are arranged to be
completely independent of the main building superstructure.
to each of the four cooling towers are located over a sub-soil consisting
of peat, necessitating the use of reinforced concrete pre-cast piles~ The pond base is of reinforced concrete and carried directly
on the pile caps.
north chimney is also supported on reinforced concrete piles, but the
south chimney has a mass concrete foundation due to the difficulty of
driving piles in the area.
basement floor throughout the boiler and turbine houses was completed by
laying 2 feet 3 inches of mass topping concrete during the latter stages
of construction. This made
possible the inclusion of various cable trenches and drains at a later
date, thus simplifying programming of the work.
The main buildings are of steel framed construction; the boiler and turbine columns are welded sections using broad flanged beams. Due to the decision to use sheet cladding on the boiler house it was possible to use lighter steelwork than would have been the case with conventional brick superstructure. The coal bunkers are of steel plate and girder construction. The whole building, which measures 350 feet long by 232 feet wide, contains approximately 3,800 tons of steel.
parts of the boiler house, which are enclosed, are clad with
"Cellactite" sheeting, the minimum amount of brickwork being
used. The turbine house is of
brick construction with the doors and window surrounds of pre-fabricated
stone. Windows throughout the
station are steel framed, fitted with plain glass.
The roofs are formed from asbestos cement cavity decking, covered
with three layer built up felt surfacing laid on an insulating layer and
finished off with light reflecting stone chippings.
The turbine house has "Lenscrete" roof lights, some of
which are provided with louvres for ventilation.
All the suspended concrete floors in the station are of steel filler beam construction. The operating floor finishes are quarry tiles in the boiler house; in the turbine house, terrazzo surfaces. The basement throughout has a granolithic finish.
Aluminium faced doors have been provided in the west wall of the turbine house for electrical rotor withdrawal, thus affecting a saving of several feet in the width of the building.
Structural steelwork for semi-outdoor boilers
of the four cooling towers handles circulating water for condensers
associated with one turbine, the culvert system being so arranged that any
machine can be operated in conjunction with any tower.
The towers are 250 feet high with a base diameter of 205 feet.
The temperature drop of the circulating water through the tower is
approximately 14 degrees Fahrenheit.
The cooling capacity of each tower is 2¾ million gallons per hour.
two circular chimneys are built from brick supported on a reinforced
concrete plinth of square section 61 feet high.
The total chimney height is 300 feet with an internal diameter of
16 feet. The external
brickwork is "Nori" rustic brick, the acid and heat resisting
lining of which is separated by an air space; the top 3 feet of the
chimney is formed in acid resisting brickwork.
Each chimney carries the flue gases away from two boilers.
and Amenity Buildings
administration block contains the control room, cable rooms, battery
rooms, laboratory, calorifier room and administration offices, and
arranged in the amenity block are canteen and recreational facilities,
heated double-tier lockers, showers, washing rooms, lavatories, medical
treatment rooms and the time office.
provide space heating and hot water services within the building, the
calorifier plant utilises steam bled from any one of four turbo-alternator
sets in the turbine house. The
condensed steam from the calorifiers is returned to the feed heating
system at the turbine. This
gives a very satisfactory and economic system.
In addition to the calorifiers, a 150 kilowatt standby electrode
boiler has been included and provided initial heating requirements until
the first turbine was commissioned.
and Auxiliary Plant
turbo-alternator plant comprises four 60,000 kilowatt turbo generators
operating under steam conditions of 900 lb per square inch and 900 degrees
Fahrenheit, running at 3,000 revolutions per minute.
from the low
exhausts into three-pass, twin casing, surface condensers working under a
vacuum of 28.7 inches of mercury when the machine is operating at 60,000
kilowatts. Air is extracted from the condensers by two 100% steam operated
air ejectors and for starting up purposes a quick start ejector is
installed which will raise a vacuum of 24 inches of mercury in
approximately ten minutes.
100% capacity electrically driven extraction pumps remove the condensate
from the condensers and deliver it to the feed heaters. There are five feed heaters, three of which are high pressure,
on the discharge side of the boiler feed pumps, and two are low pressure.
These heaters utilise steam bled from various stages of the
turbine, giving a final temperature of the feed water leaving the last
heater of 385 degrees Fahrenheit at full load.
One of the low pressure heaters is of the direct contact type which
acts as a deaerator. The remaining heaters are of the conventional tubular type.
steam to the turbines is delivered through 12 inch diameter pipework which
is of a chromium molybdenum alloy. This
steel has special creep resisting properties which are essential for the
high temperature conditions met in this station.
The 12 inch steam pipe divides into two 9 inch loops after the main turbine stop valve, delivering the steam through strainers to two emergency valves, after which it splits again to provide steam to four throttle valves admitting the steam to the high pressure turbine. The emergency and throttle valves on the turbines are controlled by a relay oil pressure system. This relay system is linked to various devices which trip the machine by releasing the oil pressure under dangerous conditions such as overspeeding, loss of vacuum, low oil level or certain electrical faults. In addition to the tripping mechanism, the turbine is progressively unloaded should vacuum begin to fall. Similarly, the turbine is unloaded if the boiler pressure falls.
driven barring gear is installed to rotate the turbine and alternator
shaft continuously prior to starting up or immediately after shutting down
the machine, thus ensuring even cooling of the shafts and eliminating
distortions. This also
machine to be started up quickly within a short period of shutdown.
machine to be started up quickly within a short period of shutdown.
main turbine oil pump is of the centrifugal type and located on the
governor end of the turbine shaft. This
pump takes over the duty of the alternating current motor driven auxiliary
oil pump when the machine reaches a speed of approximately 2,600
revolutions per minute
auxiliary oil pump supplies oil to the bearings and the governor gear and
is arranged to start up automatically should the pressure from the main
oil pump fall below a pre-determined level. A direct current motor driven
oil pump is installed to provide oil to the bearings in the event of a
failure of the auxiliary oil pump. This delivers sufficient oil to the
bearings to bring the machine safely to rest.
commence barring the machine, a jacking oil pump is available to lift the
shaft in its bearings and initiate the formation of an oil film.
100% capacity oil coolers are provided with each machine, the cooling
water being drawn from the circulating water system.
motor driven centrifugal oil purifier is installed with each set and is
located on the operating floor.
condensate is treated by the injection of chemicals immediately before
the boiler feed pumps; the dosing is completely automatic and is
proportioned to the flow of condensate.
sets of evaporating plant are accommodated in the turbine house basement
adjacent to each of Sets 1, 2 and 3.
Each plant is a self-contained, triple effect, live steam
evaporator and supplies 34,000 lb per hour of distilled water.
This water is pumped to the reserve water tank and used for boiler
ensure that a supply of air freed water for boiler make-up is always
available, a shunt de-aerator unit of the direct contact type is installed
with each machine.
alternator is designed to generate at 11.8 kilovolts which is fed through
the main bus bars direct to the generator transformer, where it is raised
to 132 kilovolts.
The alternator is hydrogen cooled, the hydrogen passing through tubular type coolers supplied with water from the circulating system. The pressure of hydrogen in the alternator casing is one half lb per square inch gauge.
100% capacity electrically driven feed pumps feed each boiler.
These pumps rotate at 3,000 revolutions per minute and the motors
are 1,400 horse power. The
delivery pressure is 1,220 lb per square inch when the set is on full
load. The pumps are arranged
so that in the event of a failure of one pump the standby pump will start
Boiler feed pump for No. 3 machine
order to prevent corrosion and scale formation in the boilers and
associated pipework, it is essential that the boilers be provided with
pure water. The water
treatment plant installed is of the hydrogen-ion sodium blend process.
The water is first dosed with Aluminium sulphate; it is then passed
through pressure vessels containing sand filters which remove suspended
solids, after which it enters the automatic treatment plant.
water divides into two main streams.
One passes through the hydrogen-ion unit where the salts present in
the water are converted to the corresponding acids.
The stream which passes to the sodium zeolite section undergoes a
base exchange reaction.
water delivered from the two processes is then automatically combined and
so proportioned that the bicarbonates present in one stream and the acids
in the other neutralise each other, resulting in the liberation of carbon
dioxide. The blended water has now zero hardness and low alkalinity.
The free carbon dioxide released from the blended water is removed by passing through a de-gassifier tower. Treated water is stored in tanks in the main station building from where it is delivered to the evaporating plant before passing to the boilers as make-up water. The total capacity of the water softening plant is 270,000 gallons of treated water per day.
Water treatment house
The boiler plant consists of four Lopulco radiant beat type boilers with a steam capacity of 550,000 lb per hour at a pressure of 950 lb per square inch and 925 degrees Fahrenheit at the superheater outlet.
Boiler erection - drum level
boilers are of semi-outdoor construction.
Special precautions have been taken to prevent freezing trouble
that might occur during winter operation.
The drum floor of each boiler is made into a separate enclosure by
light sheet cladding thus giving a measure of heat insulation from
adjacent boilers whilst work is proceeding on a particular boiler which is
off for maintenance.
boiler is of the tri-drum type, each drum being of forged steel
construction. The furnace chamber is completely water cooled and the wall
tubes are of finned construction. Each
boiler is fired by pulverised coal which is ground by four suction type
two roll mills, each of capacity 13 tons per hour.
A small " Impax " hammer mill is used for bringing the
boiler up to pressure.
pulverised fuel burners are arranged at each corner of the combustion
chamber for tangential firing, a high turbulence being obtained in the
furnace Superheat temperature
is controlled by elevating or depressing the angle of the burners. The
boiler is initially ignited by means of oil burners from which ignition on
the coal burners is then established. The superheater is of the all welded
type, the primary section being composed of multiple loop horizontal
contra-flow elements while the secondary stage is of the pendant parallel
View from south-west showing semi-outdoor boilers
boiler is provided with an all welded economiser which is arranged in two
banks. The tube elements are arranged horizontally in such a way
that the gases flow in a vertical path between them.
air heaters are of the rotary type arranged for regenerative heat
transfer. The assembly consists of a mild steel casing in which is
housed the rotating heating elements.
The hot flue gases pass through one side, heating the elements,
whilst through the other half passes the incoming air prior to entering
automatic boiler control equipment, operated pneumatically, uses
compressed air at a pressure of 30 lb per square inch to govern the
control of the fuel, air for combustion, furnace pressure and steam
The main dampers on the boiler unit are remotely controlled by hydraulic mechanism from the main panel.
|Induced draught fan for No.1 boiler|
the station is on full load the consumption of coal can reach
approximately 18,000 tons per week. The
sidings are capable of accommodating 600 rail wagons of 10 to 24 tons
capacity which are emptied into hoppers by means of three automatic wagon
A novel device for drawing the wagons on to the tippler platform is incorporated. This is known as the " beetle " marshalling gear and eliminates the use of ropes and capstans.
Boiler house mill bay
coal from the tippler hoppers is delivered to feeder belts, which, in
turn, pass the coal to a system of duplicate conveyor belts which can
deliver the coal at a rate of 400 tons per hour to the boiler house
bunkers or to the coal storage area as required.
coal may be reclaimed from stock by bulldozing it into two underground
hoppers whence it is again transferred to the main conveyor system to the
coal bunkers. The conveyor
belts are duplicated and each is of 100 % capacity.
effective bunker capacity per boiler is 900 tons.
Coal wagon tippler
Ash and Dust Handling Plant
products of combustion in the boilers are handled in two ways. The heavy
particles of ash fall to the bottom of
the combustion chamber and are collected in water filled ash hoppers.
The light dust particles pass with the flue gases into a separate
contents of the ash hoppers are emptied periodically into a sluiceway in
the boiler house basement, the ash being carried by a stream of water into
two collecting pits outside the station.
The water to handle the ash is delivered through a series of high
pressure jets which are distributed throughout the length of the system,
thus eliminating blockages. The
ash is removed from the collecting pits by an overhead travelling grab
crane and carried away by road vehicle to various dumping grounds.
The water which conveys the ash is drained from the pit, pumped to
a reservoir, returned to the high pressure pumps and used again, thus the
amount of make-up water is reduced to a minimum.
The dust which is carried by the flue gases is first passed through mechanical collectors, two of which are provided per boiler. This plant comprises a bank of cells which induce a series of vortices and the resulting centrifugal force carries the dust particles to the periphery of each cell. From this position the dust can fall into hoppers.
gases from each boiler then pass through two electrostatic precipitators
arranged in parallel. These
consist of vertical banks of hexagonal tubes with central wire electrodes.
In passing through the tubes the dust receives a static charge and
is collected on the walls. The dust is then periodically discharged into
hoppers by automatic operation of vibrating gear. From the various
collecting hoppers the dust is conveyed under vacuum to elevated
reinforced concrete dust bunkers whence it is passed through a screw type
mixer conveyor and with the addition of a small amount of water, to
facilitate handling and eliminate dust nuisance, it is discharged to road
vacuum on the dust line is raised by passing the water from the high
pressure pumps through an ejector, thus the same water is used for both
ash and dust disposal.
storage installation consists of three 8,000 ton tanks.
The oil to
be used is Bunker C with a viscosity at 100 degrees Fahrenheit of between 4,50016,000
seconds Redwood No.1 and this
will be pumped through a single pipeline from the nearby Stanlow Oil
Refinery to site storage tanks.
and roofs of the storage tanks are lagged and heating coils are provided
to maintain the oil at approximately 140 degrees Fahrenheit.
storage tanks the oil is pumped through trace heated mains to the
auxiliary boiler house and to the main boilers, and the surplus is
circulated back to the tanks. A
separate pump house has been provided to house the oil transfer pumps.
The auxiliary boiler house is an addition to the station and
contains three 15,000 lb/per hour Economic boilers which provide the low
pressure steam for heating the oil in the tanks and pipelines and to the
correct temperature for atomising before burning in the main boilers.
conversion of the main boilers has been arranged to preserve the unit
system originally adopted. Separate
oil pumping and heating sets are provided for each of the boilers; these
are designed to raise the pressure and temperature of the oil to a maximum
of 400 lb per square inch and 300 degrees Fahrenheit to give perfect
atomising for burning.
oil burners are located in the four corners of the furnace in the boxes
originally housing the coal burners.
There arc seven burners in each corner and the tilting feature for
superheat control has been retained.
existing ash hoppers under the boiler furnaces will not be necessary when
oil is being burnt and these are to be isolated.
A condensate recovery system is provided.
circulating water pumps, each of capacity 43,600 gallons per minute are
housed in a separate building, each pump providing sufficient water for
one machine. The cooling
tower discharge delivers the water to the pump suctions which, in turn,
pump the water through culverts to the condensers and back to the cooling
tower distribution troughs whence it falls back into the ponds and returns
to the circulating water pumps.
make-up water supplied to the cooling towers is chlorinated before leaving
the pumphouse at Chester, but to eliminate the growth of algae in the
condenser tubes a supply of chlorine is injected automatically at each
Circulating water pump house
the north of the turbine house, a workshop has been constructed.
This is provided with a 10 ton overhead electrically operated
travelling crane. The shop is
equipped with lathes, milling machines, radial and bench drilling
machines, blacksmith equipment, and has an electricians' shop and
and Relay Rooms
main control room is situated in the administration building which also
houses the relay and meter room and a mess room.
From the control room the Control Engineer is in direct
telecommunication with all operational positions.
hydrants are installed on a ring main round the station and at numerous
points and levels within the station.
spray type fire protection equipment is arranged to safeguard particularly
vulnerable points inside the station, and the outdoor transformers.
generators are connected to the 132 kV system by single core oil filled
cables through 72 MVA 11.8 / 132 kV generator transformers which are of
the forced oil air blast type, having "On Load" tap changing
each turbo-alternator and boiler is operated on the unit principle, normal
running supplies being derived from unit transformers directly connected
to the main alternator. The
unit and boiler auxiliary transformers are located outdoors in an
enclosure with the generator transformers.
station supplies are obtained from two 7.5 MVA station transformers
located outdoors in the 132 kV switchgear enclosure. They are of the naturally
oil cooled type, having "On Load" tap changing equipment.
Boiler / turbine unit control panel
Diagram of main and auxiliary connections
The 3.3 kV and 415 volt switchgear is of the
air break type, having breaking capacity ratings of 150 MVA and 25
MVA respectively. The
switchboards are located in the annexe between the boiler house and
The station is connected to the 132 kV
switchgear enclosure by cable conduits which convey all main and multicore
cables between the two points. The
majority of the auxiliary cables inside the station are run in bituminised
fibre conduit laid in the topping concrete.
Cables, in general, are of the paper
insulated, non-draining type. Lead sheathed V.l.R. control cables and
mineral insulated copper sheathed cables are also used.
132 kV substation is of double busbar type with air blast switchgear and
manually operated isolators.
There are 19 circuit breakers comprising:-
bus section - and those associated with
bus section circuit breakers are under construction and two further A.C.Bs
for two Grid transformer circuits will shortly be added.
132 kV switching station
air supply for operation of the A.C.Bs is obtained from four 3-stage
automatic compressor units at 600 lb per square inch. The air is stored at
this pressure in four outdoor air receivers and is reduced to 300 lb per
square inch, distributed by ring main to the A.C.Bs where it is stored for
operation of the breakers and also further reduced in pressure for air
132 kV feeders are of overhead construction supported on lattice steel
double circuit towers.
control and protective gear associated with the 132 kV plant and with the
generators, generator transformers and station transformers was engineered
and installed along with the 132 kV switchgear.
|RECLAMATION||A. Monk & Co.|
|Fencing||Penfold & Co., Ltd|
|MAIN AND ANCILLARY FOUNDATIONS, PERMANENT ROADS, PILING, ETC.||Holland & Hannen & Cubitts, Ltd.|
|SUPERSTRUCTURE, MAIN BUILDING ADMINISTRATION AND ANCILLARY BUILDINGS||Holland & Hannen & Cubitts, Ltd.|
|Cladding||Cellactite & British Uralite, Ltd|
|Bricks||Accrington Brick & Tile Co., Ltd. Barker & Jones, Ltd.|
|Cavity Decking Roof||Turners Asbestos Cement|
|Roof Lights||Girlings Ferro Concrete Co., Ltd|
|Metal Windows||Williams & Williams Ltd|
|Artificial Stone||Liverpool Artificial Stone Co., Ltd|
|Rubber Floor Tiles||North British Rubber Co., Ltd|
|Wood Block Flooring||R. W. Brooke & Co., Ltd|
|Thermoplastic Tile Flooring||Rowan & Bowden Ltd.|
|Guniting||Concrete Proofing Co., Ltd|
|Balustrading||Bayliss, Jones & Bayliss, Ltd|
|Terrazzo||Diespeker & Co., Ltd|
|Laboratory Fittings||Ayrton-Graham Ltd.|
|Lighting Standards||Spun Concrete Ltd. Concrete Utilities Ltd.|
|Administration Heating System||Brightside Heating & Engineering Co., Ltd|
|Canteen (Ancillary Equipment)||Rowe Bros.|
|Lift||Aldous Campbell Ltd.|
|Fencing||Bayliss, Jones & Bayliss, Ltd|
|Felt Roofing||Vulcanite Ltd.|
|Plastering & Granolithic Floors||Plasterers, Ltd.|
|STRUCTURAL STEELWORK||Horseley Bridge & Thomas Piggot, Ltd.|
|Erection by||Carter Horseley (Eng.) Ltd.|
|CHIMNEYS||D. Theaker & Co. Ltd.|
|COOLING TOWERS||Film Cooling Towers, 1925, Ltd.|
|Civil Sub-Contractor||J. L. Kier, Ltd.|
|RAILWAY SIDINGS||B.C.S. (Engineers & Contractors), Ltd.|
|AGRICULTURAL ROAD WORKS||J. W. Flather, Ltd.|
MECHANICAL ENGINEERING PLANT
|BOILER UNITS, PULVERISED FUEL EQUIPMENT AND AUXILIARY PLANT||International Combustion, Ltd.|
|Boiler Drums||English Steel Corporation, Ltd.|
|Boiler and Furnace Tubing||Richards & Ross, Ltd.|
|Superheaters||Superheater Co., Ltd.|
|Economisers||Senior Economisers, Ltd.|
|Boiler Valves and Mountings||Hopkinsons, Ltd.|
|Pipework||Aiton & Co., Ltd.|
|Air Heaters and Casings||James Howden (Land), Ltd.|
|I.D. and F.D. Fans||James Howden (Land), Ltd.|
|Fan Motors||English Electric Co., Ltd.|
|Insulating Refractories||Ipscol, Ltd.|
|Asbestos Material||Cape Asbestos Co., Ltd|
|Boiler Brickwork||Kingscliff Insulating Products, Ltd.|
|Pipework Insulating Material||Chemical & Insulating Co., Ltd|
|Electrostatic Precipitators||Sturtevant Engineering Co., Ltd.|
|Concrete Structure||Bierrum & Partners, Ltd.|
|Electrical Equipment||British Thompson-Houston Co., Ltd|
|Oil Fuel Burners and Pipework||Wallsend Slipway & Eng. Co., Ltd.|
|Coal Weighing Machines||Richard Simon & Eng. Co., Ltd.|
|Sootblowing Equipment||Ivor Power Specialty Co., Ltd.|
|Instrument and Control Panels||Electroflo Meters, Ltd.|
|Boiler Automatic Control Equipment||Electroflo Meters, Ltd.|
|Steam Temperature Control Equipment||George Kent, Ltd.|
|Motor for Auxiliaries||Laurence Scott & Electromotors, Ltd.|
|TURBO-ALTERNATOR PLANT||The General Electric Co., Ltd.|
|Oil Purifier||Alfa-Laval Co., Ltd.|
|Auxiliary Oil Pump||Mirrlees (Engineers), Ltd.|
|Flushing Oil Pump||Mirrlees (Engineers), Ltd.|
|Jacking Pump||Mirrlees (Engineers), Ltd.|
|Barring Gear||Mirrlees (Engineers), Ltd.|
|Hydrogen Coolers||Premier Cooler & Eng. Co., Ltd|
|Hydrogen Seal Oil Pump||Mirrlees (Engineers), Ltd.|
|C.W. Booster Pumps||Worthington & Simpson, Ltd.|
|CONDENSING AND FEED HEATING PLANT||Hick Hargreaves & Co., Ltd.|
|Condenser Shells||The Colville Construction Co., Ltd.|
|Condenser Tubes and Tube Plates||Yorkshire Copper Works, Ltd. (I.C.I. Metals Division)|
|Circulating Water Valves||J. Blakeborough & Sons, Ltd.|
|Motors||The General Electric Co., Ltd.|
|Instruments||George Kent, Ltd.|
|Oxygen Recorder||Cambridge Instrument Co., Ltd.|
|Water Purity Meter||Evershed & Vignoles|
|Gauges||Budenberg Gauge Co., Ltd.|
|COAL HANDLING PLANT||Simon-Carves, Ltd.|
|Main Sub- Contractor:|
|Naylor Brothers, Ltd.|
|Coal Wagon Tipplers||Mitchell Engineering Co. Ltd.|
|Tippler Motors||The General Electric Co., Ltd.|
|Tippler Weighbridge||W. & T. Avery, Ltd.|
|Conveyor Belting||Greengate & Irwell Rubber Co., Ltd.|
|Belt Weighers||Adequate Weighers, Ltd.|
|Magnetic Pulleys||Electromagneto, Ltd.|
|ASH AND DUST HANDLING PLANT||Babcock & Wilcox, Ltd.|
|Sealing Water Pumps||Worthington & Simpson, Ltd.|
|Bilge Pumps||Gwynnes Pumps, Ltd|
|Valves||Sir William H. Bailey & Co., Ltd.|
|Dust Cyclone Collectors||Babcock & Wilcox, Ltd.|
|Mixer Conveyors||James Sadler, Ltd.|
|BOILER FEED PUMPS||Sulzer Bros. ( London), Ltd.|
|Motors||Brown Boveri, Ltd. English Electric Co., Ltd.|
|STEAM AND FEED PIPEWORK||Babcock & Wilcox, Ltd.|
|Steam Traps||Hopkinsons, Ltd.|
|EVAPORATOR||Aiton & Co., Ltd.|
|CIRCULATING WATER PUMPS, VALVES AND PIPEWORK||Drysdale & Co., Ltd.|
|Motors||English Construction Co., Ltd.|
|Sluice Valves||J. Blakeborough & Sons, Ltd.|
|Non-return Valves||J. Blakeborough & Sons, Ltd.|
|Piping||Aiton & Co., Ltd.|
|C.W. System Control Panel||Automatic Telephone & Elec. Co., Ltd.|
|LOW PRESSURE PIPEWORK AND VALVES||Brightside Foundry & Engineering Co., Ltd|
|CHLORINATION||Wallace & Tiernan, Ltd.|
|Pipework and Valves||Filtrators, Ltd.|
|Chlorine Pump||Pulsometer Engineering Co., Ltd.|
|Pump Motor||Brookes Motors, Ltd.|
|Drum Lifting Gear||Felco Hoists, Ltd.|
|WATER SOFTENING PLANT||Permutit Co., Ltd.|
|CHEMICAL TREATMENT PLANT||Paterson Engineering Co., Ltd.|
|Mixing Tanks||James Day Sheet Metal Workers, Ltd.|
|Electrical Equipment||Lancashire Dynamo Electronic Products, Ltd.|
|pH Equipment||Cambridge Instrument Co., Ltd.|
|TANKS||Horseley Bridge & Thomas Piggot, Ltd.|
|Remote Water Level Indicators||Evershed & Vignoles, Ltd.|
|Audible Electric Alarms||Evershed & Vignoles, Ltd.|
|Tank Panel||Evershed & Vignoles, Ltd.|
|TURBINE HOUSE CRANE||Sir Wm. Arrol & Co. Ltd.|
|Hoisting Ropes||British Ropes, Ltd.|
|Motors||English Electric Co., Ltd.|
|VACUUM CLEANING PLANT||B.V.C. Industrial Construction, Ltd.|
|Motors||Lancashire Dynamo and Crypto, Ltd.|
|Filter Container||Braby & Co., Ltd.|
|STATION COMPRESSOR||Ingersoll Rand Co., Ltd.|
|WORKSHOP EQUIPMENT||The Selson Machine Tool Co., Ltd.|
|TWO DIESEL SHUNTING LOCOMOTIVES||John Fowler, Ltd.|
|AUXILIARY CRANES||Wharton Crane and Hoist Co., Ltd.|
|AUXILIARY PUMPS||Worthington Simpson, Ltd|
|MAIN SWITCHGEAR||English Electric Co., Ltd.|
|AUXILIARY SWITCHGEAR||English Electric Co., Ltd.|
|Contactor Switchgear, Ltd.|
|GENERATOR TRANSFORMERS||General Electric Co., Ltd.|
|STATION TRANSFORMERS||English Electric Co., Ltd.|
|AUXILIARY TRANSFORMERS||Bonar Long & Co., Ltd.|
|CABLING||British Insulated Callender Cables, Ltd.|
|BATTERIES & RECTIFIERS||Chloride Batteries, Ltd.|
|LIGHTING AND HEATING||Geo. E. Taylor & Co. (London), Ltd.|
|TELEPHONES||Standard Telephone Co., Ltd. Communication Systems, Ltd.|
|MULSIFYRE EQUIPMENT||Mather & Platt, Ltd.|
|CIVIL||A. Monk & Co., Ltd.|
|132 kV SWITCHGEAR||English Electric Co., Ltd.|
|132 kV CABLES||British Insulated Callender Cables, Ltd.|
|132 kV LINES||Watshams, Ltd.|
|LIGHTING AND HEATING INSTALLATION||Thomas Wood & Son (Chester), Ltd.|
DUAL FIRING CONVERSION CONTRACTORS
|MODIFICATIONS TO THE MAIN BOILERS||International Combustion, Ltd.|
|Pumps||Mirrlees (Engineers), Ltd.|
|Control||Electroflo Meters, Ltd.|
|TRANSFER PUMPS||Mirrlees (Engineers), Ltd.|
|PIPEWORK EXTERIOR TO THE BOILER HOUSE||Babcock & Wilcox, Ltd.|
|AUXILIARY BOILERS||Babcock & Wilcox, Ltd. Edwin Danks & Co. (Oldbury), Ltd.|
|Control||Bailey Meters & Controls, Ltd.|
|Oil Burning Equipment||Hamworthy Engineering Co., Ltd.|
|Oil Storage Tanks||Whessoe, Ltd.|
|CONSULTANTS||Rendel, Palmer & Tritton|
|TANKS AND OTHER FOUNDATIONS AND AUXILIARY BOILER HOUSE||J. L. Kier & Co., Ltd.|
|STRUCTURAL STEELWORK||Ed. Wood & Co., Ltd.|
|SWITCHGEAR||Castle Fuse & Eng. Co., Ltd.|
|CABLING AND LIGHTING||Geo. E. Taylor & Co. (London), Ltd.|
Original Printing by the Central Electricity Authority
Trafalgar Buildings, London, S.W. 1.
by Brownlee Printing, London.
P.S.B. 153 9/10/57