7202

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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