.. _section-4.8:
Input/Output Description
------------------------
:numref:`table-4.8-1` contains a listing of |SAS| input locations that
are relevant to the point kinetics and reactivity feedback models. :numref:`table-4.8-2` contains a listing of input locations that are relevant to the new
decay heat model. A complete description of all |SAS| input may
be found in :numref:`section-A2.2`.
The new decay heat model is compatible with old input decks. However, to
support the larger number of terms in the ANS standard as well as
specifying multiple curves within a single decay heat region, new input
locations have been specified. The new decay heat model still supports a
total of 5 user-supplied decay heat curves, but also supports up to
eight built-in standard curves. (Currently, only four are defined by the
code.) A total of 10 decay heat regions can be defined using any
combination of decay heat curves. User-supplied integer input for the
decay heat model is contained in Block 1 (INPCOM). Floating-point input
is contained in Block 12 (POWINA).
The simplest usage of the new decay heat model is one that takes
advantage of the built-in standard curves. For example, a problem with a
single decay heat region that can be characterized by the decay heat
from U-235 fission requires only two input parameters: NDKGRP = 23 and
DKANSI(1,1) = 1.0.
In addition to the decay heat input described below, the
channel-dependent input parameter :sasinp:`IDKCRV` must
be specified to indicate which decay heat *region* each channel belongs.
If this value is zero, no decay heat will be calculated for that
channel, and power from the predefined non-decay-heat region will be
used. Similarly, the association of bypass channels with decay heat
regions is defined by :sasinp:`IDKTYP`.
On each main time step, the following quantities are printed: a) total
reactor power (normalized to unity at time zero), b) decay-heat power,
c) integrated energy (full-power seconds), d) net reactivity, e)
programmed reactivity, f) control rod drive expansion reactivity, g)
Doppler reactivity, h) fuel and cladding axial expansion reactivity, i)
coolant reactivity, j) fuel-motion reactivity, and k) cladding-motion
reactivity. In addition, the coolant, fuel, cladding, axial expansion
and Doppler reactivity for each channel are also printed at each main
time step. This information is also printed following each major print
in expanded form (more significant digits), along with the group-wise
values of the delayed-neutron precursor concentrations and decay-heat
powers.
.. _table-4.8-1:
.. list-table:: Point Kinetics and Reactivity Feedback Input Data
:header-rows: 1
:align: center
:widths: auto
* - Symbol
- Reference
- Name
- Block
- Location
- Suggested Value
* - \-
- \-
- IPOWER
- 1
- 8
- 0 or 1
* - \-
- :numref:`%s<section-A4.1>`
- IPOWOP
- 1
- 9
- 0 or 1
* - \-
- \-
- NPK
- 1
- 10
- 0
* - \-
- \-
- NDELAY
- 1
- 16
- ≥0, ≤6
* - \-
- \-
- NPREAT
- 1
- 18
- ≥0, ≤20
* - \-
- \-
- ICREXP
- 1
- 31
- ≥0, ≤3
* - \-
- \-
- IDBPWI
- 1
- 35
- 0 or 1
* - \-
- \-
- IRADEX
- 1
- 36
- ≥−7, ≤7
* - \-
- \-
- NFUELD
- 1
- 39
- <0
* - \-
- \-
- NOREAC
- 1
- 41
- ≥0
* - \-
- \-
- NSRMTB
- 1
- 43
- Not used.
* - \-
- \-
- NSUBTC
- 1
- 51
- ≥0
* - \-
- \-
- MTGRD
- 1
- 52
- 1 or 2
* - \-
- \-
- MTACLP
- 1
- 53
- 1 or 2
* - \-
- \-
- MTTLP
- 1
- 54
- 1 or 2
* - \-
- \-
- MODEEX
- 1
- 55
- ≥0, ≤3
* - \-
- \-
- JREEXT
- 1
- 56
- 0 or 1
* - \-
- \-
- IREACT
- 1
- 58
- ≥−2, ≤2
* - \-
- \-
- NSUBTR
- 1
- 59
- ≥0
* - \-
- \-
- NRRNGS
- 1
- 60
- 0,1, or 2
* - \-
- \-
- MTRRAC
- 1
- 61
- 1 or 2
* - \-
- \-
- MTRFAC
- 1
- 63
- 1 or 2
* - \-
- \-
- MTRFT
- 1
- 64
- 1 or 2
* - \-
- \-
- IROPT
- 1
- 65
- 0 or 1
* - \-
- \-
- JCRIND
- 1
- 66
- >0
* - \-
- \-
- ICRDDB
- 1
- 71
- 0,1, or 2
* - \-
- \-
- ICRTMP
- 1
- 72-74
- ≥0
* - \-
- \-
- ICRNOD
- 1
- 75-77
- \-
* - \-
- \-
- NSEGCR
- 1
- 78
- >0
* - \-
- \-
- MTCB
- 1
- 81
- 1 or 2
* - \-
- \-
- KDEBUG
- 1
- 82
- 0 or 1
* - \-
- \-
- KEBRS1
- 1
- 83
- ≥0
* - \-
- \-
- KEBRS2
- 1
- 84
- ≥0
* - \-
- \-
- IDBDKH
- 1
- 85
- \-
* - \-
- \-
- NULLD3
- 1
- 86
- \-
* - \-
- \-
- NOFDBK
- 1
- 89
- ≥0
* - \-
- \-
- IBOWTP
- 1
- 102
- 0 or 1
* - \-
- \-
- KCHUIS
- 3
- 1209-1242
- Not used.
* - \-
- \-
- NRREAC
- 3
- 1292
- ≥0
* - \-
- \-
- ISLREA
- 3
- 1293-1300
- ≥0
* - \-
- \-
- LBYP
- 3
- 1301
- ≥0
* - \-
- \-
- LELBYP
- 3
- 1302-1309
- ≥0
* - \-
- \-
- EPSPOW
- 11
- 3
- :math:`10^{- 4}`
* - \-
- \-
- ASCRAM
- 11
- 23
- Not used.
* - \-
- \-
- PSCRAM
- 11
- 24
- Not used.
* - \-
- \-
- GSCRAM
- 11
- 25
- Not used.
* - \-
- :numref:`%s<section-A4.1>`
- POW
- 12
- 1
- \-
* - :math:`\Lambda`
- :eq:`4.2-4`
- GENTIM
- 12
- 2
- \-
* - \-
- :numref:`%s<section-A4.1>`
- POWTOT
- 12
- 3
- \-
* - :math:`\beta_{\text{i}}`
- :eq:`4.3-1`
- BETADN
- 12
- 4-9
- \-
* - :math:`\lambda_{\text{i}}`
- :eq:`4.3-1`
- DECCON
- 12
- 10-15
- \-
* - \-
- \-
- OLDBDK
- 12
- 16-21
- Not used.
* - \-
- \-
- OLDDKL
- 12
- 22-27
- Not used.
* - \-
- \-
- OLDBDT
- 12
- 28
- Not used.
* - \-
- \-
- PREATB
- 12
- 29
- \-
* - \-
- \-
- PREATM
- 12
- 49
- \-
* - \-
- :numref:`%s<section-A4.1>`
- FRPR
- 12
- 69
- \-
* - :math:`L_{\text{cr}}`
- :eq:`4.5-36`
- CRDLEN
- 12
- 71
- \-
* - :math:`\alpha_{\text{cr}}`
- :eq:`4.5-36`
- CRDEXP
- 12
- 72
- \-
* - :math:`a_{\text{cr}}`
- :eq:`4.5-39`
- ACRDEX
- 12
- 73
- \-
* - :math:`b_{\text{cr}}`
- :eq:`4.5-39`
- BCRDEX
- 12
- 74
- \-
* - :math:`M_{\text{cr}}C_{\text{cr}}`
- :eq:`4.5-29`
- CRDMC
- 12
- 75
- \-
* - :math:`h_{\text{cr}}A_{\text{cr}}`
- :eq:`4.5-29`
- CRDHA
- 12
- 76
- \-
* - :math:`V_{\text{ui}}`
- :eq:`4.5-30`
- UIVOL
- 12
- 77
- \-
* - :math:`C_{\text{re}}`
- :eq:`4.5-23`
- RDEXPC
- 12
- 78
- \-
* - :math:`\frac{{\text{XMC}}}{{\text{XAC}}}`
- :eq:`4.5-23`
- XMCXAC
- 12
- 79
- \-
* - \-
- \-
- SCRTAB
- 12
- 80
- Not used.
* - \-
- \-
- SCRTME
- 12
- 90
- Not used.
* - \-
- \-
- PRETB2
- 12
- 100-179
- \-
* - \-
- \-
- PRETM2
- 12
- 180-259
- \-
* - :math:`S_{{\text{GRMAX}}}`
- :eq:`4.5-27a`
- SLLMAX
- 12
- 408
- \-
* - \-
- \-
- PITCHG
- 12
- 409
- \-
* - \-
- \-
- PITCHA
- 12
- 410
- \-
* - \-
- \-
- PITCHT
- 12
- 411
- \-
* - \-
- \-
- RDEXCF
- 12
- 412
- \-
* - \-
- \-
- TLPRRC
- 12
- 413
- \-
* - \-
- \-
- BNDMM1
- 12
- 414
- \-
* - \-
- \-
- BNDMM2
- 12
- 415
- \-
* - \-
- \-
- TINSRT
- 12
- 416
- \-
* - \-
- \-
- REAINS
- 12
- 417
- \-
* - \-
- \-
- TLIMIT
- 12
- 418
- \-
* - \-
- \-
- DFLTCS
- 12
- 419
- \-
* - \-
- \-
- DFLTSS
- 12
- 420
- \-
* - \-
- \-
- ACLPRC
- 12
- 421
- \-
* - \-
- \-
- FCDTR1
- 12
- 422
- \-
* - \-
- \-
- FCDTR2
- 12
- 423
- \-
* - \-
- \-
- FCDTRF
- 12
- 424
- \-
* - \-
- \-
- DRCOLL
- 12
- 425
- \-
* - \-
- \-
- CRSAC
- 12
- 426
- \-
* - \-
- \-
- RR1TC
- 12
- 427
- \-
* - \-
- \-
- RR2TC
- 12
- 428
- \-
* - \-
- \-
- RODID
- 12
- 429
- \-
* - \-
- \-
- RODOD
- 12
- 430
- \-
* - \-
- \-
- SHRDLN
- 12
- 431-433
- \-
* - \-
- \-
- SHRDID
- 12
- 434-436
- \-
* - \-
- \-
- SHRDOD
- 12
- 437-439
- \-
* - \-
- \-
- RHOCRD
- 12
- 440
- \-
* - \-
- \-
- HTCPCR
- 12
- 441
- \-
* - \-
- \-
- CONDCR
- 12
- 442
- \-
* - \-
- \-
- VFCRD
- 12
- 443
- \-
* - \-
- \-
- HFILM
- 12
- 444
- \-
* - \-
- \-
- FLSHRD
- 12
- 445
- \-
* - \-
- \-
- AREACR
- 12
- 446
- \-
* - \-
- \-
- FLOEXP
- 12
- 447
- \-
* - \-
- \-
- ACLPEL
- 12
- 448
- \-
* - \-
- \-
- TLPEL
- 12
- 449
- \-
* - \-
- \-
- PTCHRA
- 12
- 450
- \-
* - \-
- \-
- PTCHRT
- 12
- 451
- \-
* - \-
- \-
- RCBARR
- 12
- 452
- \-
* - \-
- \-
- FCDTCB
- 12
- 453
- \-
* - \-
- \-
- CB2TC
- 12
- 454
- \-
* - \-
- \-
- YKNF
- 12
- 455
- \-
* - \-
- \-
- YKHF
- 12
- 456
- \-
* - \-
- \-
- YKNNA
- 12
- 457
- \-
* - \-
- \-
- YKNSS
- 12
- 458
- \-
* - \-
- \-
- YRCUR
- 12
- 459
- \-
* - \-
- \-
- YRCLR
- 12
- 460
- \-
* - \-
- \-
- YRCRR
- 12
- 461
- \-
* - \-
- \-
- YRCCR
- 12
- 462
- \-
* - \-
- \-
- YRCGP
- 12
- 463
- \-
* - \-
- \-
- YRCDOP
- 12
- 464
- \-
* - \-
- \-
- YDELT0
- 12
- 465
- \-
* - \-
- \-
- YABOW
- 12
- 466
- \-
* - \-
- \-
- YBBOW
- 12
- 467
- \-
* - \-
- \-
- FCR
- 12
- 468
- \-
* - \-
- \-
- YTCUT
- 12
- 469
- \-
* - :math:`\varepsilon_{\text{ex}}`
- \-
- EXPCOF
- 13
- 1263
- \-
* - \-
- \-
- IAXEXP
- 51
- 181
- 0, 1, or 2
* - \-
- \-
- IDKCRV
- 51
- 203
- ≥0, ≤5
* - \-
- \-
- ICHUIS
- 51
- 362
- 0 or 1
* - \-
- \-
- IPOWRZ
- 51
- 364
- 0 or 1
* - \-
- \-
- IREACZ
- 51
- 365
- 0 or 1
* - :math:`\gamma_{\text{s}}`
- :eq:`3.3-22`
- GAMSS
- 62
- 2
- \-
* - :math:`\gamma_{\text{c}}`
- :eq:`3.3-22`
- GAMTNC
- 62
- 4
- \-
* - :math:`\gamma_{\text{e}}`
- :eq:`3.3-22`
- GAMTNE
- 62
- 5
- \-
* - :math:`\overline{P}`
- :numref:`%s<section-A4.1>`
- PSHAPE
- 62
- 6-29
- \-
* - :math:`P_{\text{r}}`
- \-
- PSHAPR
- 62
- 30-44
- \-
* - :math:`\alpha_{\text{D}}`
- :eq:`4.5-2`
- ADOP
- 62
- 62
- \-
* - :math:`\alpha_{\text{D}}`
- :eq:`4.5-2`
- BDOP
- 62
- 63
- \-
* - \-
- \-
- WDOPA
- 62
- 64-111
- \-
* - :math:`\left( \rho_{\text{c}} \right)_{\text{jI}}`
- :eq:`4.5-22`
- VOIDRA
- 62
- 112-159
- \-
* - :math:`R_{\text{e}}`
- \-
- CLADRA
- 62
- 160-207
- \-
* - :math:`R_{\text{f}}`
- :eq:`4.5-20`
- FUELRA
- 62
- 208-255
- \-
* - \-
- :numref:`%s<section-A4.1>`
- PRSHAP
- 62
- 256
- \-
* - \-
- \-
- PSHPTP
- 62
- 257-261
- \-
* - \-
- \-
- PSHPBT
- 62
- 262-266
- \-
* - \-
- \-
- XRFSHP
- 62
- 268
- \-
* - \-
- \-
- XRNSHP
- 62
- 269
- \-
* - \-
- \-
- XRSSHP
- 62
- 270
- \-
* - \-
- \-
- PSHAPC
- 62
- 271-318
- \-
* - \-
- \-
- PSHAPB
- 62
- 319-366
- \-
* - :math:`\alpha_{\text{f}}`
- :eq:`4.5-4`
- FUELEX
- 63
- 73
- \-
* - :math:`\alpha_{\text{e}}`
- :eq:`4.5-5`
- CLADEX
- 63
- 74
- \-
* - :math:`Y_{\text{f}}`
- :eq:`4.5-8`
- YFUEL
- 63
- 75
- \-
* - :math:`Y_{\text{e}}`
- :eq:`4.5-8`
- YCLAD
- 63
- 76
- \-
* - :math:`\varepsilon_{\text{ex}}`
- :eq:`4.5-21`
- EXPCFF
- 63
- 79
- \-
|
.. _table-4.8-2:
.. list-table:: Decay Heat Input Data
:header-rows: 1
:align: center
:widths: 1,1,1,1,1,1
* - Symbol
- Reference
- Name
- Block
- Location
- Comments
* - \-
- :eq:`eq-ANS-H-total`
- NDKGRP
- 1
- 17
- max = 24
* - \-
-
- NPOWDK
- 1
- 45
- max = 5
* - \-
-
- NPDKST
- 1
- 46
- max = 8
* - :math:`\beta_{\text{n}}`
- :eq:`eq-ANS-beta`
- BETADK *or*
DKBET2
- 12
- 260-289
511-630
- deprecated, use DKBET2
* - :math:`\lambda_{\text{n}}`
- :eq:`eq-ANS-decay`
- DKLAM *or*
DKLAM2
- 12
- 290-319
631-750
- deprecated, use DKLAM2
* - :math:`\beta_{\text{d}}`
- :eq:`eq-ANS-beta`
- BETAHT
- 12
- 320-324
- \-
* - :math:`x_{\text{i}}`
- :eq:`eq-ANS-PowerSum`
- DKFRAC
- 12
- 751-800
- \-
* - :math:`x_{\text{i}}`
- :eq:`eq-ANS-PowerSum`
- DKANSI
- 12
- 801-880
- \-
* - :math:`P_{\text{t}}^{k}`
- :eq:`eq-ANS-H-total`
- POWLVL
*and*
PWLVL2
- 12
- 325-364
881-920
- PWLVL2 is an extension of POWLVL
* - :math:`\tau_{\text{k}}`
- :eq:`eq-ANS-H-total`
- POWTIM
*and*
PWTIM2
- 12
- 365-404
921-960
- PWTIM2 is an extension of POWTIM
* - :math:`Q_{\text{t}}`
- :eq:`eq-ANS-total`
- QETOT
- 12
- 961-968
- default = 200 MeV