Code Case N-318-5 Lug Attachment Local Stress Evaluation

Project: Perry Calculation: 1E12-G007A Rev: A-01Support: E12-H143 Node: 36

Pipe: 12" Sch 20 12.750 in. T = 0.250 in.

Stress Indices: 0.50 1.00 I= 1.00

Z= 30.68

Material: 304 SS Maximum Temp= 275

16900 psi 27725 psi 23175 psi

Lugs: Length (in)= 3 Width (in) = 1.5 Number of Sides Welded: 2

Weld Properties:Weld type: Fillet = 1, Partial Pen = 2, Full Pen = 3: 1 Weld Size: 0.2500

3.6 (3.6 for fillet or part. pen. welds on two or 3 sides, 2.0 for welds on 4 sides or full pen. welds)

1.0605 0.5303

0.7954 0.8300

Piping Properties:Do = 12.750 in g = r/t = 25.000 0.25

t = 0.250 in 0.1200 0.25

r = 6.2500 in 0.2400 0.750

1.500 in (width) 0.750 1.500

3.000 in (length) 1.500

51.00 0.029

Check: 0.5 0.5 0.075 OK

OKPiping Parameters:

Load h Thrust 2.2 40 0 0.05 -0.921 -0.570 1.061

Longitudinal moment 2.0 50 -0.45 -0.55 -1.371 -1.170 1.733Circumferential moment 1.8 40 -0.75 -0.60 -1.671 -1.220 2.053

15.75

4.39

4.58

23.63 4.500

2.250

6.59 1.125

6.87

DO=

B1= B2=

in3

0F

Sh= SA= Sy=

Kl =

AW= in2 Zwd= in3

Zwl= in3 Zwt= in3

La = lesser of L2 & t =

b1 = L1/r = Lb = lesser of L1 & t =

b2 = L2/r = Lc = lesser of L1 & L2 =

2L1 = L1 = Ld = greater of L1 & L2 =

2L2 = L2 =

DO / t = (b1) (b2) =

b1 <= b2 <= (b1)(b2) <=

DO / t < 100

A0 q (deg.) xo yo x1 y1

x1 = xo + log10 b1

y1 = yo + log10 b2

h = -(x1 cosq + y1 sinq) - 1/A0 ( x1 sinq - y1 cosq)2 BT = (2/3)CT > 1.0 =

BL = (2/3)CL > 1.0 =

CT = 3.82(g)1.64 b1 b2 h1.54 > 1.0 BN =(2/3)CN > 1.0 =

CT = Al = 4L1L2 =

CL = 0.26(g)1.74 b1 (b2)2 h4.74 > 1.0 ZlL = (4/3)L1(L2)2 =

CL = ZlN = (4/3)(L1)2 L2 =

CN = 0.38(g)1.90 (b1)2 b2 h3.40 > 1.0

CN =

Loading:

300 psi 300 psi

Normal PrimaryLoads:

0 lbs 2412.75 in-lbs

3217 lbs 0 in-lbs Weight Stress =

W= 0 lbs 0 in-lbs 102 psi

Upset Primary Loads:

0 lbs 2547.75 in-lbs

3397 lbs 0 in-lbs Upset Primary Stress =

W= 0 lbs 0 in-lbs 1071 psi

Emergency Primary Loads:

0 lbs 2547.75 in-lbs

3397 lbs 0 in-lbs Emergency Primary Stress =

W= 0 lbs 0 in-lbs 1071 psi

Faulted Primary Loads:

0 lbs 2621.625 in-lbs

3495.5 lbs 0 in-lbs Faulted Primary Stress =

W= 0 lbs 0 in-lbs 1536 psi

Secondary Loads:

0 lbs 2830.125 in-lbs

3773.5 lbs 0 in-lbs Normal Primary + Secondary Stress =

W= 0 lbs 0 in-lbs 3115 psi

Absolute Maximum Loads:

0 lbs 3039 in-lbs

4052 lbs 0 in-lbs

0 lbs 0 in-lbs

0 in-lbs (Normal Primary)

0 in-lbs (Upset Primary)

0 in-lbs (Emergency Primary)

0 in-lbs (Faulted Primary)

0 in-lbs (Secondary)

0 in-lbs (Absolute Maximum)

Local Stress Evaluation on Piping:

Equation Local Moment Pressure Combined Allowable Ratio

Pdesign= PMax=

Q1= Ml=

Q2= Mn=

Mt= B2MA/Z=

Q1= Ml=

Q2= Mn=

Mt= B2(MA+MB)/Z=

Q1= Ml=

Q2= Mn=

Mt= B2(MA+MB)/Z=

Q1= Ml=

Q2= Mn=

Mt= B2(MA+MB)/Z=

Q1= Ml=

Q2= Mn=

Mt= .75i(MA/Z)+I(MC/Z)=

Q1**= Ml

**=

Q2**= Mn

**=

W**= Mt**=

MT = greater of MT/LcLd t(1+(Lc/Ld)) or MT/(0.8 + 0.05(Ld/Lc))Lc2Ld

MT =

MT =

MT =

MT =

MT =

MT** =

Stress Stress Stress Stress Stress(psi) (psi) (psi) (psi) (psi)

Normal Primary 8998 102 3825 12925 25350 0.510lesser of

Upset Primary 9501 1071 3825 14397 30420 0.473lesser of

Emergency Primary 9501 1071 3825 14397 38025 0.379lesser of

Faulted Primary 9777 1536 3825 15138 46350 0.327

Normal Prim. + Sec. 32967 3115 3825 39907 44625 0.894

Maximum Loading 14299 - - 14299 46350 0.308

Maximum Loading Eq. 6= 5403 - - 5403 23175 0.233

Weld Evaluation:

Full Penetration Weld - No Weld Evaluation required Partial Penetration Weld - Weld Evalution Required as shown below: Fillet Weld - Weld Evaluation Required as shown below: X

Equation Weld Stress (psi) Allowable Stress (psi) Ratio

Max. Load Eq. 7 13373 46350 0.289

Max. Load Eq. 8 7642 23175 0.330

Conclusions: Local stresses due to the welded attachments meet the Code Case N-318-5 allowable limits.

Sml= 1.5Sh=

Sml= 1.8Sh,1.5Sy=

Sml= 2.25Sh,1.8Sy=

Sml= 3.0Sh,2.0Sy=

Sml+Spl/2= Sh+SA=

Snl**= 2.0Sy=

1.0Sy=

2.0Sy=

1.0Sy=