================================================================================
Block 63 --- PMATCH --- Channel-Dependent Properties Input
================================================================================

.. default-role:: sasinp

.. sasblock:: PMATCH 63

.. sasinp:: TIMCNS
	:location: 1
	:units: s

	Time constant for fuel pin heat transfer. Default = 0.1.

.. sasinp:: AHBPAR
	:location: 2
	:units: W/m^2-K\ \ \ m^2-K/W-m

	If all three parameters are not equal to 0.0, the bond correlation is of the form:

	HB = `AHBPAR` + 1.0/(\ `BHBPAR` +(gap size + `CHBPAR`\ )/\ `HBPAR`\ )

.. sasinp:: BHBPAR
	:location: 3

	see `AHBPAR`

.. sasinp:: CHBPAR
	:location: 4

	see `AHBPAR`

.. sasinp:: HBMAX
	:location: 5
	:units: W/m^2-K

	Maximum value of bond conductance when a gap exists; minimum value when a gap does not exist.

	Default when `AHBPAR`\ , `BHBPAR`\ , and `CHBPAR` > 0.0:

	| `HBMAX` = `AHBPAR`
	| + 1.0/(\ `BHBPAR`\ +\ `CHBPAR`\ /\ `HBPAR`\ )

.. sasinp:: HBMIN
	:location: 6
	:units: W/m^2-K

	Minimum value of bond conductance.

.. sasinp:: HBPAR
	:location: 7
	:units: W/m-K

	If all three parameters in `AHBPAR`, `BHBPAR`, and `CHBPAR` are zero, then the bond conductance equation when a gap exists is of the form: Bond conductance = `HBPAR`\ /gap.

.. sasinp:: HSNK
	:location: 8

	Should be set to 0.0.

.. sasinp:: TSNK
	:location: 9

	Should be set to 0.0.

.. sasinp:: DPRSTY
	:location: 10

	Not currently used.

.. sasinp:: XKSTIZ (KZ)
	:location: 11-17
	:units: W/m-K

	Inner structure thermal conductivity in zone KZ.

.. sasinp:: XKSTOZ (KZ)
	:location: 18-24
	:units: W/m-K

	Outer structure thermal conductivity in zone KZ.

.. sasinp:: DEL
	:location: 25
	:units: W/m^2-K^4

	Stefan-Boltzmann's constant\*emissivity. (See `STEBOL`, `EMSF`, and `EMSC`).

.. sasinp:: DGO
	:location: 26
	:units: m

	Initial grain size. Suggested value: 1.0E-05.

.. sasinp:: P0GAS
	:location: 27
	:units: Pa

	Initial plenum gas pressure at reference temperature TR.

.. sasinp:: XKRF (KZ)
	:location: 28-34
	:units: W/m-K

	Thermal conductivity of reflector for values of KZ not equal to KZPIN. `XKRF`\ (KZPIN) = thermal conductivity of cladding in the gas plenum region.

.. sasinp:: DENSS
	:location: 35

	Density of solid cladding at the reference temperature TR.

.. sasinp:: COOLDN
	:location: 36

	Not currently used.

.. sasinp:: RHOCSI (KZ)
	:location: 37-43
	:units: J/m^3-K

	Density \* heat capacity for the inner structure.

.. sasinp:: RHOCSO (KZ)
	:location: 44-50
	:units: J/m^3-K

	Density \* heat capacity for the outer structure.

.. sasinp:: RHOCR (KZ)
	:location: 51-57
	:units: J/m^3-K

	Density \* heat capacity for the reflector. For KZ = KZPIN (the pin zone), `RHOCR` is for the cladding in the gas plenum.

.. sasinp:: RHOCG
	:location: 58
	:units: J/m^3-K

	Density \* heat capacity for the gas in the gas plenum..

.. sasinp:: RG
	:location: 59
	:units: m^2-K/W

	Thermal resistance of plenum gas, typical value = 0.06.

.. sasinp:: FGMIN
	:location: 60

	Fraction of retained fission gas that assists non-equilibrium fission gas bubble induced fuel swelling (burnup dependent).

.. sasinp:: RST
	:location: 61

	Not currently used.

.. sasinp:: WRF
	:location: 62

	Not currently used.

.. sasinp:: RREF
	:location: 63

	Not currently used.

.. sasinp:: EMF
	:location: 64

	Not currently used.

.. sasinp:: EMS
	:location: 65

	Not currently used.

.. sasinp:: EMNA
	:location: 66

	Not currently used.

.. sasinp:: HMELT
	:location: 67

	Not currently used.

.. sasinp:: FCLOP
	:location: 68

	Fraction of open porosity that must be removed before axial movement allowed with metal fuels 0 ≤ `FCLOP` ≤ 1.

	=0, Open porosity volume remains constant.

	=1, All open porosity volume used before axial movement allowed.

.. sasinp:: TSEP1
	:location: 69
	:units: K

	Fuel plasticity temperature = `TSEP1` + `TSEP2` \* (fuel-cladding interface pressure - plenum gas pressure).
	The fuel pellet annulus at this temperature does not move radially inward or outward during calculations of fuel mesh boundaries.

	Suggested value: 2700 for oxide fuel.

.. sasinp:: TSEP2
	:location: 70
	:units: K/Pa

	Pressure adjustment to plasticity temperature.

	Recommended value: 10\ :sup:`-8`.

.. sasinp:: BONDNA
	:location: 71
	:units: kg	
	
	Mass of sodium added to fuel pin to produce the fuel-cladding bond.

.. sasinp:: REFDEN
	:location: 72
	:units: kg/m^3

	Theoretical density of metal fuel at the reference temperature. Used for `IFUELM` = 2.

.. sasinp:: FUELEX
	:location: 73
	:units: 1/K

	Fuel axial expansion coefficient. Used only with simple axial expansion feedback calculation. (See `IAXEXP`). Typical value: 1.1E-5.

.. sasinp:: CLADEX
	:location: 74
	:units: 1/K

	Cladding axial expansion coefficient. Used only with simple axial expansion feedback calculation. (See `IAXEXP`). Typical value: 2E-5.

.. sasinp:: YFUEL
	:location: 75
	:units: Pa

	Fuel young's modulus.

	Typical value: 1.5E11.

	Used with simple axial expansion and EBR-II feedback calculations.

.. sasinp:: YCLAD
	:location: 76
	:units: Pa
	
	Cladding Young's modulus.

	Typical value: 1.4E11.

	Used with simple axial expansion and EBR-II feedback calculations.

.. sasinp:: FULREX
	:location: 77
	:units: 1/K

	Fuel linear expansion coefficient for bond gap conductance calculation.

.. sasinp:: CLDREX
	:location: 78
	:units: 1/K

	Cladding linear expansion coefficient for bond gap conductance calculation.

	Note: `FULREX` and `CLDREX` are used only if `ISSFU2` = -1 and `IHGAP` = 0.

.. sasinp:: EXPCFF
	:location: 79

	Effective axial expansion multiplier, for simple axial expansion feedback model only.

.. sasinp:: TTRANM
	:location: 80
	:units: K

	Transition temperature for determining the outer boundary of the middle fuel zone in the SSCOMP model for `IFUELO` = 1.

.. sasinp:: TTRANC
	:location: 81
	:units: K

	Transition temperature for determining the outer boundary of the central fuel zone in the SSCOMP model for `IFUELO` = 1.

.. sasinp:: HACHCH
	:location: 82-89

	Channel-to-channel (duct wall-to-duct wall) heat transfer coefficient x area per unit height. Used only if `NCHCH` > 0.

	Note: Use the total duct wall contact area for all subassemblies involved.

.. sasinp:: POROSS
	:location: 90

	Porosity of the outer zone of metal fuel at the end of steady-state irradiation.
	Used in the SSCOMP model for `IFUELO` = 1. See also `PORMSS` and `PORCSS`.

.. sasinp:: PORMSS
	:location: 91

	Porosity of the middle zone of metal fuel at the end of steady-state irradiation.
	Used in the SSCOMP model for `IFUELO` = 1. See also `POROSS` and `PORCSS`.

.. sasinp:: PORCSS
	:location: 92

	Porosity of the central zone of metal fuel at the end of steady-state irradiation.
	Used in the SSCOMP model for `IFUELO` = 1. See also `POROSS` and `PORMSS`.

.. sasinp:: FPORNA
	:location: 93-103

	Ratio of sodium filled porosity to total porosity in the metal fuel by radial mesh node at the end of the pre-transient irradiation. Used in SSCOMP for `IFUELO` = 1.

.. sasinp:: TAUINV
	:location: 104
	:units: 1/s

	Inverse of heat transfer time constant. Degree of implicitness, THETA2, is:

	THETA2 = ( 1 + X )/( 2 + X )

	X = DT \* `TAUINV`

	DT = time step size

	Currently only used with the multiple pin option (\ `JJMLTP` not equal to 0).

	Suggested value: 5.0 for metal fuel, 1.0 for oxide fuel.

**FPIN-2 INPUT**

.. sasinp:: XEUTHR
	:location: 105
	:units: K

	Eutectic threshold temperature (K).

	Default value = 988.

	(See `FSPEC` for consistent input).

.. sasinp:: XGBFRA
	:location: 106

	Not currently used.

.. sasinp:: XCLDHR (J)
	:location: 107-130

	Pre-transient hardness parameter used in cladding flow stress calculation.
	Default value is 0.223, the value appropriate to 20% CW un-irradiated stainless steel.

.. sasinp:: XFPLC0
	:location: 131

	Fuel power law creep constant C0.

.. sasinp:: XFPLC1
	:location: 132

	Fuel power law creep constant C1.

.. sasinp:: XFDVC0
	:location: 133

	Fuel power law swelling constant C0.

.. sasinp:: XFDVC1
	:location: 134

	Fuel power law swelling constant C1.

.. sasinp:: XCIPL0
	:location: 135

	Cladding idealized flow stress constant C0.

.. sasinp:: XCIPL1
	:location: 136

	Cladding idealized flow stress constant C1.

.. sasinp:: XHTERR
	:location: 137

	Relative convergence criterion for heat transfer calculation. Default value = 0.0005.

.. sasinp:: XEPSCA
	:location: 138

	Relative convergence criterion for cavity pressure. Default value = 0.001.

.. sasinp:: XEPSFE
	:location: 139

	Relative convergence criterion for finite element analysis. Default value = 0.0005.

.. sasinp:: XEPTES
	:location: 140

	Relative convergence criterion for plastic creep strains. Default value = 0.0005.

.. sasinp:: XEVTES
	:location: 141

	Relative convergence criterion for swelling strains. Default value = 0.0005.

**END FPIN-2 INPUT**

.. sasinp:: XMCFMC
	:location: 142

	Reserved by FED.

.. sasinp:: HACIFM
	:location: 143

	Reserved by FED.

.. sasinp:: HACOFM
	:location: 144

	Reserved by FED.

.. sasinp:: HAFMOP
	:location: 145

	Reserved by FED.

.. sasinp:: HAGPFM
	:location: 146

	Reserved by FED.

.. sasinp:: TOPLSS
	:location: 147

	Reserved by FED.

.. sasinp:: StructEX
	:location: 148
	:units: 1/K

	Structure axial expansion coefficient. Used only with simple axial expansion feedback calculation. (See `IAXEXP`).

.. sasinp:: CDOSECONV
	:location: 149
	
	Conversion factor from clad fast neutron flux (n/cm\ :sup:`2`/s/1.0E+22) to dose rate (dpa/s).
	
	Only applicable if `IDEFOPT` > 0 and `ICTYPE` = 4 (15-15Ti cladding).

.. sasinp:: COCOR
	:location: 150
	:units: m
	
	Clad outer corrosion thickness prior to transient initiation.
	
	Only applicable if `IDEFOPT` > 0 and `ICTYPE` = 4 (15-15Ti cladding).

.. sasinp:: CDFMEAN
	:location: 151
	
	Mean value of the normal distribution, describing the predicted fraction of the fuel pins failed due to creep rupture as a function of Common Logarithm of CDF.
	
	Only applicable if `IDEFOPT` > 0 and `ICTYPE` = 4 (15-15Ti cladding).

.. sasinp:: CDFSIGMA
	:location: 152
	
	Standard deviation value of the normal distribution describing the predicted fraction of the fuel pins failed due to creep rupture as a function of common logarithm of CDF.
	
	Only applicable if `IDEFOPT` > 0 and `ICTYPE` = 4 (15-15Ti cladding).

.. sasinp:: DUMPCH
	:location: 153-200

	Not currently used.