A DPTO. INGENIERIA H O J A D E C A L C U L O SB ENGINEERING DEPARTMENT CALCULATION SHEETC DESCRIPCION: FECHA:D LINE DESCRIPTION: DATE

E CLIENTE: REV. No.:F CLIENT: REV. No.:

G PROYECTO: TAG:H PROJECT:

PIPE THICKNESS CALCULATION FOR STRAIGHT PIPE UNDER INTERNAL PRESSURE

DESIGN CODE ASME B-31.4

SKETCH

1 DESIGN DATA SIMBOL UNITS VALUES

2 DESIGN PRESSURE P [Psi] 3375.0

3 DESIGN TEMPERATURE T [°F] 200.0

4 EXTERNAL DIAMETER D [in] 8.625

5 CORROSION ALLOWANCE ( SEE ASME B.31.4 Section 402.4.1 ) A [in] 0.1

6 JOINT EFFICIENCY ( SEE ASME B.31.4 Table 402.4.3 ) E [ ] 1.00

7

8 MATERIAL DATA SIMBOL UNITS VALUES

9 MATERIAL API-5L X52

10 MINIMUM YIELD STRENGTH Sy [Psi] 52000.00

11 ALLOWABLE STRESS ( SEE ASME B.31.4 Section 402.3 ) S [Psi] 37440.00

12

13 RESULTS SIMBOL UNITS VALUES

14 DESIGN THICKNESS ( SEE ASME B.31.4 Section 404.1.2 ) t = P x D / ( 2 x S ) t [in] 0.3887

15 t [mm] 9.8742

16 MINIMUM THICKNESS tn = t + A tn [in] 0.4512

17 ( SEE ASME B.31.4 Section 404.1.1 ) tn [mm] 11.4617

18

19 SELECTED PIPE THICKNESS SIMBOL UNITS VALUES

20 NOMINAL THICKNESS USED tu [in] 0.500

21 tu [mm] 12.70

22 PIPE SCHEDULE FOR CURRENT THICKNESS PIPE 2 in SCH. 40S

23 PIPE SELECTED DIAGNOSTICS

24 CALCULATED STRESS Sc = P x D / ( 2 x tu ) Sc [Psi] 33267.9

25 SECURITY FACTOR SF = Sy / Sc SF [ ] 1.56

26 OK

27 MAWP CALCULATED MWAP = ( 2 x S x tu ) / D MAWP [Psi] 4340.87

28

29 NOTES :

30 1. FOR ELBOWS MINIMUM PIPE SCHEDULE IS THE SAME THAN STRAIGHT PIPE (SEE 404.2.2)

31 2. FOR TEES AND CROSSES THE MINIMUM SCHEDULE IS THE SAME THAN STRAIGHT PIPE (SEE 404.3.1)

32 3. SEE ATTACH 1 FOR NOTES 1 AND 2.

33 4. EQUIVALENT MATERIAL FOR FITTINGS IS SA-182 F304

Analisys By: E. Santillán Checked By: Approved By: