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
-½ 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