<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def orifice_diameter(self):
 """The actual orifice diameter. We don't let the diameter extend beyond its row space. """

        maxdrill = min(self.b_rows, self.d_orifice_max)
        return ut.floor_nearest(maxdrill, self.drill_bits)