No; Orchiata is not like other bark based substrates. As Pinus Radiata bark is not soft and spongy it does not absorb additional salts. It only holds enough nutrients on the outside layer of the chip for the plant. To check this you can test the EC of the Orchiata over time. There is no need for flushing; just good water and fertiliser management.
At the root of healthier plants.
