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COMANDO:

JOB:

CLIENTE:

CLIENT:

PRODUCTO:PRODUCT:

DESIGN DATASIMBOL

DESIGN PRESSURE (Maximum service pressure for rating 150# at design temperature) P

DESIGN TEMPERATURE T

EXTERNAL DIAMETER D

NOMINAL THICKNESS USED t

MECHANICAL PLUS CORROSION AND EROSION ALLOWANCES ( Section 302.4 ) c

LONGITUDINAL EFFICIENCY ( SEE ASME B.31.3 TABLE A-1B ) For Seamless pipe E

UNDERTOLERANCE ALLOWANCE UTP

MATERIAL DATA

SIMBOL

MATERIAL

MINIMUM YIELD STRENGHT Sy

ALLOWABLE STRESS VALUE FOR MATERIAL @ TEMPERATURE ASME B.31.3 TABLE A-1 S

COEFFICIENT Y ( SEE ASME B.31.3 TABLE 304.1.1 ) Y

WELD JOINT REDUCTION FACTOR ( SEE ASME B31.3 Section 302.3.5(e) ) W

VARIABLES

ACTUAL UNDERTOLERANCE UT

NOMINAL THICKNESS WITHOUT UNDERTOLERANCE nt

INTERNAL RADIOUS (wo UT) Ri

INTERNAL DIAMETER *wo UT) d

RESULTS SIMBOL

t1

t4 = P(d+2c)/2(SEW-P(1-Y)) t4

PRESSURE DESIGN THICKNESS t

MINIMUM REQUIRED THICKNESS tm = t + c tm

CHECKING

DPTO. INGENIERIA

ENGINEERING DEPARTMENT

H O J A D E C A L

CALCULATION

PIPE THICKNESS CALCULATION FOR STRAIGHT PIPE UNDER INTERNA

UT = t x UTP

nt = (t - c - UT)

Ri = (D / 2 - nt)

d = Ri x 2

t1 = P x D / 2( S x E x W + P x Y )

t = Max(t1,t4)

SKETCH

DESIGN CODE

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