constraint_eqn_065 Subroutine

   subroutine constraint_eqn_065(tmp_cc, tmp_con, tmp_err, tmp_symbol, tmp_units)
      !! Limit the stress of the vacuum vessel that occurs when the TF coil quenches.
      !! author: Timothy Nunn, UKAEA
      !! args : output structure : residual error; constraint value;
      !! residual error in physical units; output string; units string
      !! Logic change during pre-factoring: err, symbol, units will be assigned only if present.
      !! fmaxvvstress : input real : f-value for constraint on maximum VV stress
      !! max_vv_stress : input real : Maximum permitted stress of the VV (Pa)
      !! vv_stress_quench : input real : Stress of the VV (Pa)
      use constraint_variables, only: fmaxvvstress
      use tfcoil_variables, only: max_vv_stress
      use sctfcoil_module, only: vv_stress_quench
      implicit none
      real(dp), intent(out) :: tmp_cc
      real(dp), intent(out) :: tmp_con
      real(dp), intent(out) :: tmp_err
      character(len=1), intent(out) :: tmp_symbol
      character(len=10), intent(out) :: tmp_units

      tmp_cc =  1.0d0 - fmaxvvstress * max_vv_stress / vv_stress_quench
      tmp_con = max_vv_stress
      tmp_err = max_vv_stress * tmp_cc
      tmp_symbol = '<'
      tmp_units = 'Pa'

   end subroutine constraint_eqn_065