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*DECK PKINI
      SUBROUTINE PKINI(NENTRY,HENTRY,IENTRY,JENTRY,KENTRY)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Collect input information for the point kinetic module.
*
*Copyright:
* Copyright (C) 2017 Ecole Polytechnique de Montreal
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version
*
*Author(s): 
* A. Hebert
*
*Parameters: input
* NENTRY  number of data structures transfered to this module.
* HENTRY  name of the data structures.
* IENTRY  data structure type where:
*         IENTRY=1 for LCM memory object;
*         IENTRY=2 for XSM file;
*         IENTRY=3 for sequential binary file;
*         IENTRY=4 for sequential ASCII file.
* JENTRY  access permission for the data structure where:
*         JENTRY=0 for a data structure in creation mode;
*         JENTRY=1 for a data structure in modifications mode;
*         JENTRY=2 for a data structure in read-only mode.
* KENTRY  data structure pointer.
*
*Comments:
* The PKINI: module specification is:
* MAPFL := PKINI: MAPFL :: (descpkini) ;
* where
*   MAPFL : name of the \emph{map} object containing fuel regions description 
*     and global parameter informations.
*   (descpkini) : structure describing the input data to the PKINI: module. 
*
*-----------------------------------------------------------------------
*
      USE GANLIB
*----
*  SUBROUTINE ARGUMENTS
*----
      INTEGER      NENTRY,IENTRY(NENTRY),JENTRY(NENTRY)
      TYPE(C_PTR)  KENTRY(NENTRY)
      CHARACTER    HENTRY(NENTRY)*12
*----
*  LOCAL VARIABLES
*----
      PARAMETER (NSTATE=40,MAXALP=10,MAXTIM=2)
      INTEGER ISTATE(NSTATE)
      TYPE(C_PTR) IPMAP,JPMAP,KPMAP,JPPAR,KPPAR
      REAL LAMBDA,TIMES(MAXTIM)
      DOUBLE PRECISION DFLOT
      LOGICAL LCUBIC
      CHARACTER TEXT12*12,HSIGN*12,HPNAME*12,HSMG*131,HPARAM(MAXALP)*12
*----
*  ALLOCATABLE ARRAYS
*----
      REAL, ALLOCATABLE, DIMENSION(:) :: BETAI,LAMBDAI,X,Y,PARAMI,FPOWER
      REAL, ALLOCATABLE, DIMENSION(:,:) :: VAL
      DOUBLE PRECISION, ALLOCATABLE, DIMENSION(:) :: YINIT
*----
*  RECOVER THE FUELMAP
*----
      IF(NENTRY.NE.1) CALL XABORT('PKINI: ONE PARAMETER EXPECTED.')
      IF((IENTRY(1).NE.1).AND.(IENTRY(1).NE.2))CALL XABORT('PKINI:'
     1 //' LCM OBJECT EXPECTED.')
      IF(JENTRY(1).NE.1) CALL XABORT('PKINI: SECOND ENTRY IN MODIFICATI'
     1  //'ON MODE EXPECTED.')
      IPMAP=KENTRY(1)
      CALL LCMGTC(IPMAP,'SIGNATURE',12,HSIGN)
      IF(HSIGN.NE.'L_MAP') THEN
         TEXT12=HENTRY(1)
         CALL XABORT('PKINI: SIGNATURE OF '//TEXT12//' IS '//HSIGN//
     1   '. L_MAP EXPECTED.')
      ENDIF
      CALL LCMGET(IPMAP,'STATE-VECTOR',ISTATE)
      NB=ISTATE(1)
      NCH=ISTATE(2)
      NPARM=ISTATE(8)
      IF(NPARM.GT.0) JPPAR=LCMGID(IPMAP,'PARAM')
      IF(NCH.NE.1) CALL XABORT('PKINI: ONE CHANNEL EXPECTED.')
      CALL LCMSIX(IPMAP,'P-KINETIC',1)
*----
*  READ INPUT DATA
*----
      IMPX=1
      NGROUP=0
      NALPHA=0
      NPTIME=0
      EPSILON=1.0E-2
      POW0=0.0
      LAMBDA=0.0
   10 CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
      IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
      IF(TEXT12.EQ.'EDIT') THEN
*       READ PRINTING INDEX
        CALL REDGET(ITYP,IMPX,FLOT,TEXT12,DFLOT)
        IF(ITYP.NE.1)CALL XABORT('PKINI: INTEGER FOR EDIT EXPECTED.')
      ELSE IF(TEXT12.EQ.'POWER') THEN
*       Initial power (MW)
        CALL REDGET(ITYP,NITMA,POW0,TEXT12,DFLOT)
        IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR P0 EXPECTED.')
      ELSE IF(TEXT12.EQ.'LAMBDA') THEN
*       Prompt neutron generation time (s)
        CALL REDGET(ITYP,NITMA,LAMBDA,TEXT12,DFLOT)
        IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR LAMBDA EXPECTED.')
        CALL LCMPUT(IPMAP,'LAMBDA',1,2,LAMBDA)
      ELSE IF(TEXT12.EQ.'EPSILON') THEN
*       Rugge-Kutta EPSILON
        CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
        IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR EPSILON EXPECTED.')
        CALL LCMPUT(IPMAP,'EPSILON',1,2,FLOT)
      ELSE IF(TEXT12.EQ.'TIME') THEN
*       Set initial time and stage length (s)
        CALL REDGET(ITYP,NITMA,T,TEXT12,DFLOT)
        IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR T EXPECTED.')
        CALL REDGET(ITYP,NITMA,DT,TEXT12,DFLOT)
        IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR DT EXPECTED.')
        CALL LCMPUT(IPMAP,'T-VALUE_INIT',1,2,T)
        IF(IMPX.GT.0) WRITE(6,100) T,DT
      ELSE IF(TEXT12.EQ.'NGROUP') THEN
*       Read printing index
        CALL REDGET(ITYP,NGROUP,FLOT,TEXT12,DFLOT)
        IF(ITYP.NE.1)CALL XABORT('PKINI: INTEGER FOR NGROUP EXPECTED.')
      ELSE IF(TEXT12.EQ.'BETAI') THEN
*       Delayed neutron fraction
        IF(NGROUP.EQ.0)CALL XABORT('PKINI: NGROUP NOT DEFINED.')
        ALLOCATE(BETAI(NGROUP))
        DO IG=1,NGROUP
          CALL REDGET(ITYP,NITMA,BETAI(IG),TEXT12,DFLOT)
          IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR BETAI EXPECTED.')
        ENDDO
        CALL LCMPUT(IPMAP,'BETAI',NGROUP,2,BETAI)
      ELSE IF(TEXT12.EQ.'LAMBDAI') THEN
*       Delayed neutron time constant
        IF(NGROUP.EQ.0)CALL XABORT('PKINI: NGROUP NOT DEFINED.')
        ALLOCATE(LAMBDAI(NGROUP))
        DO IG=1,NGROUP
          CALL REDGET(ITYP,NITMA,LAMBDAI(IG),TEXT12,DFLOT)
          IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR LAMBDAI EXPECTED.')
        ENDDO
        CALL LCMPUT(IPMAP,'LAMBDAI',NGROUP,2,LAMBDAI)
      ELSE IF(TEXT12.EQ.'ALPHA') THEN
        IF(NPARM.EQ.0)CALL XABORT('PKINI: NPARM NOT DEFINED.')
        JPMAP=LCMLID(IPMAP,'ALPHA',MAXALP)
   20   CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
        IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
        IF(TEXT12.EQ.'ENDA') GO TO 10
        NALPHA=NALPHA+1
        IF(NALPHA.GT.MAXALP) CALL XABORT('PKINI: MAXALP OVERFLOW.')
        DO IPAR=1,NPARM
          KPPAR=LCMGIL(JPPAR,IPAR)
          CALL LCMGTC(KPPAR,'P-NAME',12,HPNAME)
          IF(HPNAME.EQ.TEXT12) GO TO 25
        ENDDO
        WRITE(HSMG,'(24HPKINI: GLOBAL PARAMETER ,A,16H IS NOT DEFINED ,
     1  15HIN THE FUELMAP.)') TEXT12
        CALL XABORT(HSMG)
   25   KPMAP=LCMDIL(JPMAP,NALPHA)
        CALL LCMPTC(KPMAP,'P-NAME',12,TEXT12)
        HPARAM(NALPHA)=TEXT12
        CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
        IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
        IF(TEXT12.EQ.'DIRECT') THEN
          ITYPE=1
        ELSE IF(TEXT12.EQ.'DERIV') THEN
          ITYPE=2
        ELSE IF(TEXT12.EQ.'SQDERIV') THEN
          ITYPE=3
        ELSE
          CALL XABORT('PKINI: DIRECT OR DERIV EXPECTED.')
        ENDIF
        CALL REDGET(ITYP,NXY,FLOT,TEXT12,DFLOT)
        LCUBIC=.FALSE.
        IF(ITYP.EQ.3) THEN
          IF(TEXT12.EQ.'LINEAR') THEN
            LCUBIC=.FALSE.
          ELSE IF(TEXT12.EQ.'CUBIC') THEN
            LCUBIC=.TRUE.
          ELSE
            CALL XABORT('PKINI: LINEAR OR CUBIC EXPECTED.')
          ENDIF
          CALL REDGET(ITYP,NXY,FLOT,TEXT12,DFLOT)
        ENDIF
        IF(ITYP.NE.1)CALL XABORT('PKINI: INTEGER FOR NXY EXPECTED(1).')
        ALLOCATE(X(NXY),Y(NXY))
        DO I=1,NXY
          CALL REDGET(ITYP,NITMA,X(I),TEXT12,DFLOT)
          IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR X EXPECTED(1).')
          CALL REDGET(ITYP,NITMA,Y(I),TEXT12,DFLOT)
          IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR Y EXPECTED(1).')
        ENDDO
        CALL LCMPUT(KPMAP,'ALPHA-LAW-P',NXY,2,X)
        CALL LCMPUT(KPMAP,'ALPHA-LAW-R',NXY,2,Y)
        CALL LCMPUT(KPMAP,'ALPHA-LAW-T',1,1,ITYPE)
        CALL LCMPUT(KPMAP,'ALPHA-LAW-I',1,5,LCUBIC)
        DEALLOCATE(Y,X)
        GO TO 20
      ELSE IF(TEXT12.EQ.'PTIME') THEN
        IF(NALPHA.EQ.0)CALL XABORT('PKINI: NO FEEDBACK PARAMETERS.')
        JPMAP=LCMGID(IPMAP,'ALPHA')
        CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
        IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
   30   IF(TEXT12.EQ.'ENDP') GO TO 10
        NPTIME=NPTIME+1
        IALP=0
        DO IAL=1,NALPHA
          IALP=IAL
          IF(TEXT12.EQ.HPARAM(IAL)) GO TO 40
        ENDDO
        WRITE(HSMG,'(24HPKINI: GLOBAL PARAMETER ,A,16H IS NOT A FEEDBA,
     1  13HCK PARAMETER.)') TEXT12
        CALL XABORT(HSMG)
   40   KPMAP=LCMDIL(JPMAP,IALP)
        LCUBIC=.FALSE.
   50   CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
        IF(ITYP.EQ.1) THEN
          NXY=NITMA
          ALLOCATE(X(NXY),Y(NXY))
          DO I=1,NXY
            CALL REDGET(ITYP,NITMA,X(I),TEXT12,DFLOT)
            IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR X EXPECTED(2).')
            CALL REDGET(ITYP,NITMA,Y(I),TEXT12,DFLOT)
            IF(ITYP.NE.2)CALL XABORT('PKINI: REAL FOR Y EXPECTED(2).')
          ENDDO
          CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
          IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
        ELSE IF(ITYP.EQ.3) THEN
          IF(TEXT12.EQ.'LINEAR') THEN
            LCUBIC=.FALSE.
            GO TO 50
          ELSE IF(TEXT12.EQ.'CUBIC') THEN
            LCUBIC=.TRUE.
            GO TO 50
          ELSE IF(TEXT12.EQ.'T-DELT') THEN
            GO TO 60
          ELSE
            CALL XABORT('PKINI: LINEAR, CUBIC OR T-DELT EXPECTED.')
          ENDIF
   60     CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
          IF(ITYP.EQ.1) THEN
            NXY=NITMA
            CALL REDGET(ITYP,NITMA,T1,TEXT12,DFLOT)
            IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(1).')
          ELSE IF (ITYP.EQ.2) THEN
            NXY=1001
            T1=FLOT
          ELSE
            CALL XABORT('PKINI: INTEGER OR REAL DATA EXPECTED.')
          ENDIF
          ALLOCATE(X(NXY),Y(NXY))
          CALL REDGET(ITYP,NITMA,T2,TEXT12,DFLOT)
          IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(2).')
          IF(T2.LE.T1) CALL XABORT('PKINI: T2 > T1 EXPECTED.')
          DELT=(T2-T1)/REAL(NXY-1)
          TT=T1
          CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
          IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
          IF(TEXT12.NE.'P-VALV') CALL XABORT('PKINI: P-VALV EXPECTED.')
          CALL REDGET(ITYP,NITMA,GAMMA,TEXT12,DFLOT)
          IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(3).')
          CALL REDGET(ITYP,NITMA,PINIT,TEXT12,DFLOT)
          IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(4).')
          CALL REDGET(ITYP,NITMA,PFINAL,TEXT12,DFLOT)
          IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(5).')
          CALL REDGET(ITYP,NITMA,TB1,TEXT12,DFLOT)
          IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(6).')
          IF(TB1.LT.T1) CALL XABORT('PKINI: INVALID VALUE OF TB1.')
          CALL REDGET(ITYP,NITMA,B1,TEXT12,DFLOT)
          IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(7).')
          CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
          IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
          TB2=T2
          PFINA2=PFINAL
          IF(TEXT12.EQ.'RESET') THEN
            CALL REDGET(ITYP,NITMA,PFINA2,TEXT12,DFLOT)
            IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(8).')
            IF(PFINA2.GT.PFINAL) CALL XABORT('PKINI: INVALID VALUE OF'
     >      //' PFINA2.')
            CALL REDGET(ITYP,NITMA,TB2,TEXT12,DFLOT)
            IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(9).')
            IF(TB2.LE.TB1) CALL XABORT('PKINI: INVALID VALUE OF TB2.')
            CALL REDGET(ITYP,NITMA,B2,TEXT12,DFLOT)
            IF(ITYP.NE.2) CALL XABORT('PKINI: REAL DATA EXPECTED(10).')
            CALL REDGET(ITYP,NITMA,FLOT,TEXT12,DFLOT)
            IF(ITYP.NE.3)CALL XABORT('PKINI: CHARACTER DATA EXPECTED.')
          ENDIF
*
          ALPHA=2.0*GAMMA/(GAMMA-1.0)
          YGAR=PINIT
          DO I=1,NXY
            X(I)=TT
            IF(TT.LE.TB1) THEN
              Y(I)=PINIT
            ELSE IF(TT.LE.TB2) THEN
              Y(I)=MAX(PINIT/((B1*(TT-TB1)+1.0))**ALPHA,PFINAL)
              YGAR=Y(I)
            ELSE
              Y(I)=MAX(YGAR/((B2*(TT-TB2)+1.0))**ALPHA,PFINA2)
            ENDIF
            TT=TT+DELT
          ENDDO
        ELSE
          CALL XABORT('PKINI: INTEGER OR CHARACTER DATA EXPECTED.')
        ENDIF
        CALL LCMPUT(KPMAP,'TIME-LAW-T',NXY,2,X)
        CALL LCMPUT(KPMAP,'TIME-LAW-P',NXY,2,Y)
        CALL LCMPUT(KPMAP,'TIME-LAW-I',1,5,LCUBIC)
        DEALLOCATE(Y,X)
        GO TO 30
      ELSE IF(TEXT12.EQ.';') THEN
        GO TO 70
      ELSE
        CALL XABORT('PKINI: INVALID KEYWORD: '//TEXT12//'.')
      ENDIF
      GO TO 10
*----
*  RECOVER THE INITIAL GLOBAL PARAMETER VALUES
*----
   70 ALLOCATE(PARAMI(NALPHA))
      IF(IMPX.GT.0) WRITE(6,110)
      DO IAL=1,NALPHA
        DO IPAR=1,NPARM
          KPPAR=LCMGIL(JPPAR,IPAR)
          CALL LCMGTC(KPPAR,'P-NAME',12,HPNAME)
          IF(HPNAME.EQ.HPARAM(IAL)) GO TO 80
        ENDDO
        CALL XABORT('PKINI: GLOBAL PARAMETER NOT FOUND.')
   80   CALL LCMLEN(KPPAR,'P-VALUE',ILONG,ITYLCM)
        IF(ILONG.EQ.0) THEN
          WRITE(HSMG,'(33HPKINI: VALUE OF GLOBAL PARAMETER ,A,6H IS NO,
     1    20H SET IN THE FUELMAP.)') HPNAME
          CALL XABORT(HSMG)
        ENDIF
        CALL LCMGET(KPPAR,'P-VALUE',PARAMI(IAL))
        IF(IMPX.GT.0) WRITE(6,120) IAL,HPNAME,PARAMI(IAL)
      ENDDO
      CALL LCMPUT(IPMAP,'P-VALUE-INIT',NALPHA,2,PARAMI)
      CALL LCMPTC(IPMAP,'P-NAME',12,NALPHA,HPARAM)
*----
*  SET INITIAL SOLUTION OF POINT KINETIC EQUATIONS
*----
      IF(POW0.EQ.0.0) CALL XABORT('PKINI: INITIAL POWER NOT DEFINED.')
      IF(NGROUP.EQ.0) CALL XABORT('PKINI: NGROUP NOT DEFINED.')
      ALLOCATE(YINIT(NGROUP+1))
      YINIT(1)=POW0
      DO I=2,NGROUP+1
         YINIT(I)=POW0*BETAI(I-1)/(LAMBDAI(I-1)*LAMBDA)
      ENDDO  
*----
*  SAVE INITIAL CONDITIONS
*----
      ISTAGE=1
      TIMES(:MAXTIM)=-1.0E30
      TIMES(1)=T
      TEXT12='PKIN-DAT0001'
      IF(IMPX.GT.0) WRITE(6,130) T,TEXT12
      CALL LCMSIX(IPMAP,TEXT12,1)
        CALL LCMPUT(IPMAP,'P-VALUE',NALPHA,2,PARAMI)
        CALL LCMPUT(IPMAP,'Y-VALUE',NGROUP+1,4,YINIT)
        CALL LCMPUT(IPMAP,'T-VALUE',1,2,T)
        CALL LCMPUT(IPMAP,'DT-VALUE',1,2,DT)
        CALL LCMPUT(IPMAP,'I-VALUE',1,1,ISTAGE)
      CALL LCMSIX(IPMAP,' ',2)
      DEALLOCATE(PARAMI,YINIT,LAMBDAI,BETAI)
      CALL LCMPUT(IPMAP,'PKIN-TIMES',MAXTIM,2,TIMES)
*----
*  CREATE STATE VECTOR AND SAVE POWER INFORMATION
*----
      ISTATE(:NSTATE)=0
      ISTATE(1)=ISTAGE
      ISTATE(2)=NGROUP
      ISTATE(3)=NALPHA
      ISTATE(4)=NPTIME
      CALL LCMPUT(IPMAP,'STATE-VECTOR',NSTATE,1,ISTATE)
      IF(IMPX.GT.0) WRITE(6,140) ISTATE(2:4)
      IF(IMPX.GT.1) CALL LCMLIB(IPMAP)
      CALL LCMSIX(IPMAP,' ',2)
      IF(IMPX.GT.0) WRITE(6,150) POW0
      CALL LCMPUT(IPMAP,'REACTOR-PW',1,2,POW0)
      CALL LCMLEN(IPMAP,'BUND-PW',ILONG,ITYLCM)
      CALL LCMLEN(IPMAP,'AXIAL-FPW',JLONG,ITYLCM)
      IF((ILONG.EQ.NCH*NB).AND.(JLONG.EQ.NB)) THEN
        ALLOCATE(VAL(NCH,NB),FPOWER(ILONG))
        CALL LCMGET(IPMAP,'AXIAL-FPW',FPOWER)
        DSUM=0.0
        DO IB=1,NB
          DSUM=DSUM+FPOWER(IB)
        ENDDO
        DO ICH=1,NCH
          DO IB=1,NB
            VAL(ICH,IB)=FPOWER(IB)*POW0*1.0E3/(DSUM*REAL(NCH))
          ENDDO
        ENDDO
        CALL LCMPUT(IPMAP,'BUND-PW',NCH*NB,2,VAL)
        DEALLOCATE(FPOWER,VAL)
      ENDIF
      RETURN
*
  100 FORMAT(/34H PKINI: DEFINE INITIAL STAGE TIME=,1P,E12.4,2H S,
     1 10H DURATION=,E12.4,2H S)
  110 FORMAT(43H PKINI: GLOBAL PARAMETER -- INITIAL VALUES:)
  120 FORMAT(1X,I8,A14,3H = ,1P,E12.4)
  130 FORMAT(/40H PKINI: SAVE INFORMATION RELATED TO TIME,1P,E12.4,
     1 27H S IN LCM DIRECTORY NAMED ',A12,2H'.)
  140 FORMAT(/
     1 14H STATE VECTOR:/
     2 7H NGROUP,I9,39H   (NUMBER OF DELAYED PRECURSOR GROUPS)/
     3 7H NALPHA,I9,34H   (NUMBER OF FEEDBACK PARAMETERS)/
     4 7H NPTIME,I9,40H   (NUMBER OF TIME-DEPENDENT PARAMETERS))
  150 FORMAT(/22H PKINI: INITIAL POWER=,1P,E12.4,3H MW)
      END