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JUSTIFICATION OF EXPENDITURE TO LINE
NEW AND DETERIORATED PIPELINES
The following information presented concerning the justification for installing SURE-LINE® HDPE LINERS within new, existing and internally corroded steel production lines is itemized below.
- 1. SURE-LINE ® HDPE LINERS will increase the calculated burst pressure of an existing corroded steel pipe by at least 100% over the pin-hole damaged area that has suffered a loss of wall thickness within a specific area.
- 2. Where general wall thickness has diminished throughout the entire pipeline structure, SURE-LINE ® HDPE LINERS will provide additional composite support equivalent to minimum estimated wall thickness and calculated burst pressure, excluding specific pin hole damage, of 133 % (1.33 x unsupported bare steel burst.).
EXAMPLE
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I |
II |
III |
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STEEL PIPE O.D. WITH EST.
NET WALL |
CALCULATED BURST |
COMPOSITE SURELINE® D APPROX. BURST
(COLII * 135%)
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| A. |
8" .156" GRADE "B" |
760 PSI |
1011 PSI |
| B. |
8" .188" GRADE "B" |
920 PSI |
1224 PSI |
| C. |
8" .156" X-42
|
1140 PSI |
1516 PSI |
| D. |
8" .188" X-42 |
1370 PSI |
1822 PSI |
| E. |
10" .188" GRADE "B" |
730 PSI |
971 PSI |
| F. |
10".188" X-42 "B" |
1250 PSI |
1663PSI |
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NOTE:A above - Yeild calculated per D.O.T. formula
F=1st |
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