Nov. 16, during the process stops (shortage of HBM) maintenance section have cleaned (PM) of PLT 402Zs and after the finish, then open the steam distribution and start working (free load), and then wait for the process to start, and after 2 hours (16.30-18.30) has checked again found the scratch of the outer shell, because the pin lock of the return guide dropped out of alignment,
it cause of a touch of outer shell with the return guide then stops and reinstall the PIN in the correct position.
Reasons caused by maintenance section, did not install the PIN back in the correct position after finish job