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Reg. 515, Reg. 516 A,
Reg. 516 B
STANDARD CONDITIONS FOR THE DESIGN AND
CONSTRUCTION
OF ECONOMISER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR
VESSELS
Steel Economisers with or without cast iron sleeves on the
tubes
Headers: Construction |
|
a)
|
The headers shall be constructed
in accordance with Regulation
154. |
| b) |
Branches, shall be secured
by one of the following methods.
| 1) |
Expanded, belled and
welded. |
| 2) |
Strength welded with
additional securing means. |
| 3) |
Full depth strength
weld. |
| 4) |
Branches less than 2
inch bore may be screwed and seal welded. |
|
| c) |
Open ends of forged for seamless
steel tube headers may be closed by forging, or the ends
may be secured by bolting, screwing, or welding in an
approved manner. |
|
|
Reg. 516 A
STANDARD CONDITIONS FOR THE DESIGN AND
CONSTRUCTION
OF ECONOMIZER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR
VESSELS
STEEL ECONOMISER WITH OR WITHOUT CAST IRON SLEEVES ON
THE TUBES
Headers: Working Pressure |
| |
|
(a) Rectangular headers: -
The working pressure shall be calculated in accordance
with Regulation 340.
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|
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Reg. 516 B
STANDARD CONDITIONS FOR THE DESIGN AND
CONSTRUCTION
OF ECONOMIZER, FEED PIPES, FEED HEATERS AND OTHER SIMILAR
VESSELS
STEEL ECONOMISER WITH OR WITHOUT CAST IRON SLEEVES ON
THE TUBES
(b) Cylindrical headers |
| |
| The working pressure shall be calculated
in accordance with Regulations 270
and 271. |
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