Boiler Details.

 

 

BOILER DETAILS - LOCOMOTIVE No 7202

Boiler No C 6068 Type: Standard No 4 (DG)

Built: Messrs Ruston & Hornsby Lincoln 1926                                                                                                  

Drg.No: 58712 Authority: K 397

Max. designed working pressure: 200 Ibs/sq.in.

Boiler, Barrel length 11' 0"

Outside diameter 4' 10 ¾" and 5' 6"

Pitch 8' 2"

Firebox, Outside 7' 0" by 5' 9" and 4' 0"

Inside 6' 2½" by 4' 8 7/8" and 3' 2 5/8"

Height 6' 6 3/8" and 5' 0 3/8"

Tubes. No Diameter Length

Fire 235 1 5/8" 11' 4 7/16"

Flue 14 5 1/8" 11' 4 7/16"

Elements 84 1" 11' 5 3/8"

Heating surface: Tubes 1349.64 sq.ft.
  Firebox 128.72 sq.ft.
  Superheater 191.79 sq.ft.
  Total 1670.15 sq.ft.

Grate area: 20.56 sq.ft.

 

BOILER CONSTRUCTION

BARREL (Steel) CASING (Steel) FIREBOX (Copper)
Front plate 21/32" thick Frontplate 11/16" thick Tubeplate 5/8" thick
Backplate 3/4" thick Backplate 9/16" thick Backplate 5/8" thick
Tubeplate 11/16" thick Crown 9/16" thick Crown 5/8" thick
    R.H. Side Wrapper 9/16" thick R.H. Side Wrapper 5/8" thick
    L.H. Side Wrapper 9'16" thick L.H. Side Wrapper 5/8" thick
    Foundation Ring 4" x 3 1/2"    

BOILER HISTORY

LOCOMOTIVE FITTED REMOVED
7309 June 1925 September 1929
5339 December 1929 March 1932
5306 September 1932 February 1937
4321 February 1937 September 1937
9304 April 1938 November 1945
9307 March 1946 November 1951
7226 March 1952 October 1957
7202 January 1958 May 1988 (For overhaul)

Total mileage at 28/12/63 951,096

 

LAST REPAIRS BEFORE PRESERVATION

Caerphilly - June 1962 - Category "L" (In frames)

No details available

Caerphilly -January 1958 - Category "E" (Off frames)

Small tubes and Superheater flues renewed

Firebox -New copper tubeplate

-New copper backplate

-½ New copper wrappers L.H. and R.H. sides

Casing -3/4 New steel backplate

New stool wrappers L.H. and R.H. sides

Stays -474 New copper and 695 new steel

Hydraulic test (260 lbs/sq.in.) 7/1/58

Steam test (200 Ibs/sq.in.) 7/1/58

 

 

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Please feel free to email me at 
7202@rickwebster.co.uk with any questions, comments or suggestions for improvements to the website.

Please note this is not a official website for  "GWR 7202" which is owned by "The Great Western Society" and based at "Didcot Railway Centre".

All photographs
 © Ricky Webster unless stated otherwise.