def METHOD_NAME():
    m = blr.main_steady_state()
    assert degrees_of_freedom(m) == 0
    # mass balance
    assert pytest.approx(0, abs=1e-2) == pyo.value(
        m.fs_main.fs_blr.aRH1.tube_inlet.flow_mol[0]
        + m.fs_main.fs_blr.aECON.tube_inlet.flow_mol[0]
        - m.fs_main.fs_blr.aPlaten.outlet.flow_mol[0]
        - m.fs_main.fs_blr.aRH2.tube_outlet.flow_mol[0]
        - m.fs_main.fs_blr.blowdown_split.FW_Blowdown.flow_mol[0]
        + m.fs_main.fs_blr.Attemp.Water_inlet.flow_mol[0]
    )
    # FEGT temperature
    assert pytest.approx(1399.96, rel=1e-5) == pyo.value(
        m.fs_main.fs_blr.aBoiler.flue_gas_outlet.temperature[0]
    )
    assert pytest.approx(329144395, rel=1e-5) == pyo.value(
        m.fs_main.fs_blr.aBoiler.heat_total_ww[0]
    )
    assert pytest.approx(418839867, rel=1e-5) == pyo.value(
        m.fs_main.fs_blr.aBoiler.heat_total[0]
    )