View source for 2D PWR assembly burnup example (Serpent 1 style division)

 <nowiki>
set title "PWR Burnup Calculation Based on NEA Benchmark"

% --- Fuel pins:

pin 10
UO2     0.4025
clad    0.4750
water

pin 11
UO2     0.4025
clad    0.4750
water

pin 12
UO2     0.4025
clad    0.4750
water

pin 13
UO2     0.4025
clad    0.4750
water

pin 14
UO2     0.4025
clad    0.4750
water

pin 15
UO2     0.4025
clad    0.4750
water

pin 16
UO2     0.4025
clad    0.4750
water

pin 17
UO2     0.4025
clad    0.4750
water

pin 18
UO2     0.4025
clad    0.4750
water

pin 19
UO2     0.4025
clad    0.4750
water

pin 20
UO2     0.4025
clad    0.4750
water

pin 21
UO2     0.4025
clad    0.4750
water

pin 22
UO2     0.4025
clad    0.4750
water

pin 23
UO2     0.4025
clad    0.4750
water

pin 24
UO2     0.4025
clad    0.4750
water

pin 25
UO2     0.4025
clad    0.4750
water

pin 26
UO2     0.4025
clad    0.4750
water

pin 27
UO2     0.4025
clad    0.4750
water

pin 28
UO2     0.4025
clad    0.4750
water

pin 29
UO2     0.4025
clad    0.4750
water

pin 30
UO2     0.4025
clad    0.4750
water

pin 31
UO2     0.4025
clad    0.4750
water

pin 32
UO2     0.4025
clad    0.4750
water

pin 33
UO2     0.4025
clad    0.4750
water

pin 34
UO2     0.4025
clad    0.4750
water

pin 35
UO2     0.4025
clad    0.4750
water

pin 36
UO2     0.4025
clad    0.4750
water

pin 37
UO2     0.4025
clad    0.4750
water

pin 38
UO2     0.4025
clad    0.4750
water

pin 39
UO2     0.4025
clad    0.4750
water

pin 40
UO2     0.4025
clad    0.4750
water

pin 41
UO2     0.4025
clad    0.4750
water

pin 42
UO2     0.4025
clad    0.4750
water

pin 43
UO2     0.4025
clad    0.4750
water

pin 44
UO2     0.4025
clad    0.4750
water

pin 45
UO2     0.4025
clad    0.4750
water

% --- Gd-pins:

pin 50
UO2Gd   0.4025
clad    0.4750
water

pin 51
UO2Gd   0.4025
clad    0.4750
water

pin 52
UO2Gd   0.4025
clad    0.4750
water

% --- Guide tube:

pin 90
water   0.5730
tube    0.6130
water

% --- Pin lattice:

lat 110  1  0.0 0.0 17 17  1.265
  
45 44 43 42 41 40 39 38 37 38 39 40 41 42 43 44 45 
44 36 35 34 33 32 31 30 29 30 31 32 33 34 35 36 44 
43 35 28 27 52 90 26 25 90 25 26 90 52 27 28 35 43 
42 34 27 90 24 23 22 21 51 21 22 23 24 90 27 34 42 
41 33 52 24 20 19 18 17 16 17 18 19 20 24 52 33 41 
40 32 90 23 19 90 15 14 90 14 15 90 19 23 90 32 40 
39 31 26 22 18 15 50 13 12 13 50 15 18 22 26 31 39 
38 30 25 21 17 14 13 11 10 11 13 14 17 21 25 30 38 
37 29 90 51 16 90 12 10 90 10 12 90 16 51 90 29 37 
38 30 25 21 17 14 13 11 10 11 13 14 17 21 25 30 38 
39 31 26 22 18 15 50 13 12 13 50 15 18 22 26 31 39 
40 32 90 23 19 90 15 14 90 14 15 90 19 23 90 32 40 
41 33 52 24 20 19 18 17 16 17 18 19 20 24 52 33 41 
42 34 27 90 24 23 22 21 51 21 22 23 24 90 27 34 42 
43 35 28 27 52 90 26 25 90 25 26 90 52 27 28 35 43 
44 36 35 34 33 32 31 30 29 30 31 32 33 34 35 36 44 
45 44 43 42 41 40 39 38 37 38 39 40 41 42 43 44 45 

% --- assembly data:

surf  1000  sqc  0.0 0.0 10.752
surf  1001  sqc  0.0 0.0 10.806

cell 110  0  fill 110   -1000
cell 111  0  water       1000 -1001
cell 112  0  outside     1001

% --- Materials:

mat UO2    6.7402E-02  burn 1
92234.09c  9.1361E-06
92235.09c  9.3472E-04
92238.09c  2.1523E-02
 8016.09c  4.4935E-02

mat UO2Gd  6.8366E-02  burn 10
92234.09c  4.2940E-06
92235.09c  5.6226E-04
92238.09c  2.0549E-02
64154.09c  4.6173E-05
64155.09c  2.9711E-04
64156.09c  4.1355E-04
64157.09c  3.1518E-04
64158.09c  4.9786E-04
64160.09c  4.3764E-04
 8016.09c  4.5243E-02

mat clad   3.8510E-02
26000.06c  1.3225E-04
24000.06c  6.7643E-05
40000.06c  3.8310E-02

mat tube   4.3206E-02
26000.06c  1.4838E-04
24000.06c  7.5891E-05
40000.06c  4.2982E-02

mat water  7.2216E-02  moder lwtr 1001
 1001.06c  4.8132E-02
 8016.06c  2.4066E-02
 5010.06c  3.6487E-06
 5011.06c  1.4686E-05

therm lwtr lwj3.11t

% --- Cross section library file path:

set acelib "/xs/sss_endfb7u.xsdata"

% --- Periodic boundary condition:

set bc 3

% --- Neutron population and criticality cycles:

set pop 6000 500 20

% --- Geometry and mesh plots:

plot 3 500 500
mesh 3 500 500

% --- Decay and fission yield libraries:

set declib "/xs/sss_endfb7.dec"
set nfylib "/xs/sss_endfb7.nfy"

% --- Irradiation cycle:

set powdens 38.6E-3

dep butot

    0.10000
    0.50000
    1.00000
    1.50000
    2.00000
    2.50000
    3.00000
    3.50000
    4.00000
    4.50000
    5.00000
    5.50000
    6.00000
    6.50000
    7.00000
    7.50000
    8.00000
    8.50000
    9.00000
    9.50000
   10.00000
   10.50000
   11.00000
   11.50000
   12.00000
   12.50000
   13.00000
   13.50000
   14.00000
   14.50000
   15.00000
   17.50000
   20.00000
   22.50000
   25.00000
   27.50000
   30.00000
   32.50000
   35.00000
   37.50000
   40.00000

% --- Nuclide inventory:

set inventory

 922340
 922350
 922360
 922370
 922380
 922390
 932360
 932370
 932380
 932390
 942360
 942380
 942390
 942400
 942410
 942420
 942430
 952410                                       
 952420
 952430
 952440
 952421
 962420
 962430
 962440
 962450
 962460
 962470
 962480
 962490
 972490
 972500
 982490
 982500
 982510
 982520
 360830
 451030
 451050
 471090
 531350
 541310
 541350
 551330
 551340
 551350
 551370
 561400
 571400
 601430
 601450
 611470
 611480
 611490
 611481
 621470
 621490
 621500
 621510
 621520
 631530
 631540
 631550
 631560
 641520
 641540
 641550
 641560
 641570
 641600</nowiki>

[[Category:Example input files|PWR]]