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170
Deptford
pumping
station.
cost of £2,000, of the gas engine plant. These engines are designed primarily for
dealing with storm water or performing other intermittent work, but owing to the
dismantling of the Worthington engines, which dealt with the sewage flowing from
the Isle of Dogs, additional strain was thrown upon the gas engine plant.
One of the mains through which sewage is pumped from the Gwynne engine
house (formerly the Worthington engine house) into the northern outfall sewer was
found to be fractured, and the cost of repair amounted to about £200.
The cast-iron steam piping in the boiler house at Deptford pumping station was
thirty years old and could no longer be relied upon. It was therefore decided to instal
a complete new range of steel, piping and valves, at a cost of approximately £750.
Two of the main engines are being overhauled, at a cost of about £300.
Three of the bridges which carry the Northern outfall sewers over roads, etc.,
Outfall,
intercepting
and main
sewers.
have been repainted, at a cost of £],804 Is. 6d.
The Southern high level sewer No. 2 passes under property belonging to the
Guardians of the Poor of the Parish of Lewisham. The Guardians proposed to erect
a nurses' home on their property, and it was necessary to undertake the strengtheningof
the sewer under the buildings, at a cost of £600.
The King's Scholars' pond sewer passes under Victoria-street, near Victoria
Station. The sewer is an old one and the depth between the top of the sewer and
the roadway is very small. The increasing weight of traffic necessitated the strengthening
of the sewer, and the cost of the work, apart from the incidental cost of shifting
pipes belonging to other authorities, has amounted to £1,188 16s. 8d.
Main sewers generally possess storm overflows for the purpose of discharging
storm water direct into the River Thames. Discharge may be controlled either by
penstocks, which require to be opened by manual labour at the appropriate time, or
by tidal flaps which open or close automatically when the pressure is greater internally
or externally. Three main sewers, the Earl, Duffield, and Battle Bridge sewers,
formerly operated by means of penstocks are being converted to the tidal flap system,
at a cost of £2,500.
A further portion of the Counter's Creek sewer, passing under the site of the
proposed hospital for children in Wallingford-avenue, North Kensington, being no
longer required for use as a main sewer, has been discontinued for that purpose.
Repairs, etc., have been carried out during the year to intercepting and main
sewers as follows :—
£
Balham Sewer 944
Blackfriars Road Sewer75
East Boundary Sewer 1,938
Effra Sewer 500
Falcon Brook Sewer 500
Kennington Road Sewer 900
Hackney Brook Sewer 1,500
King's Scholars' Pond Sewer3,000
Ranelagh Relief Sewer 6.000
Ratcliff Highway Sewer 4,000
Regent Street Sewer 4,000
Northumberland Street Sewer 3,000
Wick Lane Sewer 2,500
The work of removing from the sewers deposits which accumulate there is one
of considerable magnitude. For this purpose the county is divided into four districts,
each district being made the subject of a separate contract. Contracts are
based upon prices for the cartage and disposal of the deposit which is removed from
the sewers by the Council's staff. The cost of this work in 1926 was approximately
£3.400.
Flood relief
works.
The Council on 22nd July, 1919, had before it a comprehensive scheme of works
to mitigate floodings in various parts of London on both sides of the river Thames