Nozzle Neck Calculation

 ASME Code VIII Div. I Edition 2004, Addenda 2005 Page ( 6 / 41 ) Pressure Vessel Cal

Nozzle Head Data  Shell material. Max. allowable stress Efficiency of shell at nozzle. Wall thick, uncorroded Required wall thickness Inside radius of shell Corrosion allowance Nozzle Data:  Nozzle material. Nozzle Efficiency. Correction factor. Undertolerance of nozzle pipe. Outside diameter Max. allowable stress Internal Pressure (P=Pi+Ps) Nozzle Pipe Used 100 NB Sch 40

(A)

4

Sv E1 tv tr Rsi c

E F Utp Do Sn P tn

Nozzle Required Wall Thickness (trn) UG-27 (C)& Appendex 1-1

trn

trn =

By adding corrosion all. (AC)

AC =

=

By adding pipe tolerance

Variables:  Under tolerance Nozzle corroded thickness Nozzle Inside corroded Diameter  Nozzle corroded inside raduis Nozzle uncorroded inside raduis Vessle corroded thk.(t) = Nominal thk. of internal projection of nozzle wall

Extension of nozzle beyond the inside surface of the vessel wall

= tc = d = Ron = Rn = t = ti = UT

h fr1 fr2 fr3 fr4

= = = = =

Nozzle Neck Thickness (UG-45):  Wall thickness per UG-45(a)

tr1 =

Wall thickness per UG-45(b)

tr2 =

Wall thickness per UG-16(b)

tr3 =

Wall thickness per UG-45(b)(4)

tr4 =

The greater of tr2 or tr3

tr5 =

The lesser of tr4 or tr5

tr6 =

Required per UG-45 largest of tr1 or tr6 IF tr7≤ tn-Utp*tn then the Nozzle pipe selected

tr7 =

ulation

inch

SA-516 Gr 70 M

= = = = = =

137894

= = = = = = =

1 1 12.50% 4.49

0.207

inch KPA KPA inch

P*(Do/2)/(Sn*E+0.4*P) trn+2*c AC+UTP*trn

= = =

0.019 0.145 0.147

inch or inch or inch or

tn*UTp tn-c-UT Do-2*tc Do/2 d/2 tv-c tn-2c

= = = = = = =

0.026 0.119 4.251 2.244 2.126 0.646 0.081

inch inch inch inch inch inch inch

Min{(2.5*tv),(2.5*ti) MIN(Sn/Sv,1) MIN(Sn/Sv,1) MIN(Sn/Sv,Sp/Sv,1) MIN(Sp/Sv,1)

= = = = =

0.204 0.855 0.855 0.157 0.000

inch or

5.18

trn+c tr+c 0.0625+c

= = =

0.082 0.71 0.125

inch or inch or inch or

2.08 mm 18.00 mm 3.19 mm

(t std -Utp)+c

=

0.127

inch or

3.23

Max(tr2,tr3) Min(tr4,tr5)

= =

0.71 0.127

inch or inch or

18.00 mm 3.23 mm

1 0.71 0.65 68.90 0.06

KPA or 20000

psi

inch inch inch inch

mm mm mm mm

or or or or

18.0 16.4 1750 1.6

SA-106 Gr. B M

117899 1000

or 114.0 mm or 17100 psi or 145 psi or 5.27 mm

0.482 mm 3.682 mm 3.742 mm

or 0.66 mm or 3.01 mm or 107.98 mm or 57.00 mm or 53.99 mm or 16.40 mm or 2.07 mm mm

mm

Max(tr1,tr6)

=

0.127 Okay

inch or

3.23

mm