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Railways Erect 30-ft.

11th June 1948, Page 52
11th June 1948
Page 52
Page 52, 11th June 1948 — Railways Erect 30-ft.
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Oil Tanks

One of three oil-storage tanks, 30 ft. long and 9 ft. in diameter, being erected on a site in Buckin.glearnshire by the heavy haulage section . of the British Railways (Eastern Region). A 40-ft. derrick and the winches of Laud 15-ton tractors were used to raise the tanks from the horizontal to the vertical position. The rear wheels of the trailers were first sunk into holes to give an initial angle of inclina

tion.

THREE oil-storage tanks, each weighing 6i tons, and measuring 30 ft. long and 9 ft. in diameter, were recently transported and erected vertically on prepared seatings by the heavy haulage section• of British Railways (Eastern Region). The tanks were carried by rail from Manchester and Stockton to Marylebone, London, where they were transferred to trailers, drawn by Latil 15-ton four-wheel

steering tractors, for the final 18-mile journey to a site in Buckinghamshire.

Packing was laid between the railway wagons and trailers, and the tanks were rolled into pbsition, power being supplied by a tractor winch.

Work on the site was made more difficult by congestion, but a 40-ft. derrick, which is part of the section's equipment, was erected by means of the winch of one of the tractors. A tractor was ultimately used as a variable-positioned tie-off to give a changed angle of pull for each of the tanks.

Initially, the tank was raised by jacks on packing at one end, the trailer wheels at the opposite end first being lowered as much as possible into prepared holes. This procedure gave a preliminary tilt of some 20 degrees, thus preventing drag and undue stress on the derrick as the bond from the pulling tractor was tightened.

The bond from the winch of the second tractor was used from the opposite side, coming into operation, as a safety measure, as the tank approached the perpendicular. In addition, a cable was taken at right angles across the line of pull, and was adjusted so as to become taut at the most vulnerable position. Thus, four points cif support were given at this stage to the almost vertical tank.

To prevent any possibility of the tank's toppling over as it passed its point of balance, a false seating of timber packing was prepared. This was 6 ins, higher on the derrick side than the opposite side, and at the moment of fall on to base, the winches and bonds of the tractors were accelerated to ensure safe holding. The tank was then jacked on to level packing and finally moved sideways on rolling gear to its exact position.

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Locations: Stockton, Manchester, London

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