Internship in Nestlé - 15-16th Dec 2016 (8am - 5pm)

Thursday, 15^th Dec 2016 (8am - 5pm)  

At 9.15 a.m., we had a meeting with the operators. We have been informed that recently many production plants have performed shut-down procedures during the end of the year.

At 9.45 a.m., I went to the DPRS installation site to observe the equipment and piping after wearing a safety helmet and reflective vest.  The installation was ongoing and the workers were pouring cement for the construction of the foundation. It was inconvenient for me to walk around safely to study the DPRS system.

At 10.00 a.m., I noticed a piece of metal mesh grate was located at the walkway around the existing DAF unit in WWTP. It was suspected that the metal grate was left after the construction, making a protruding floor surface that was not obvious to be seen. I sent an email to Tee regarding this safety issue.

Protruding floor surface (view 1)

Protruding floor surface (view 2)

At 11.15 a.m., Tee gave me the task of preparing a maintenance plan for DPRS. I have to identify which equipment and instruments are required for maintenance and to list their serial numbers by next Thursday, with the aid of the technical description manual received from him. In addition, he also gave me an instrument list and the P&ID of chlorine dioxide generation and dosing system for my reference.

At 2.00 p.m., as usual, I continued to observe the existing fitting and piping of equipment in WWTP and took notes for updating the P&ID drawn using Microsoft Visio.

Then I began to study the information and manual given before preparing the maintenance plan.

Friday, 16^th Dec 2016 (8am - 5pm)

At 9.15 a.m., as usual, we had a routine meeting with the operators.

At 10.00 a.m., it was a short break time for the contractors. I entered the installation site of DPRS to begin my first observation of the DPRS built so far. It is to avoid the site being crowded by people when the installation is continued later. Using the P&ID as a guideline, generally, I managed to trace the flow of DPRS with the fittings along the pipelines. However, some equipment and instruments were pending to be installed.

At 2.00 p.m., I continued the data collecting of DPRS. While observing the flow and piping, I learned the appearance of various types of valves that are commonly used in industrial sites. Then I walked around the existing WWTP to observe the check valves I had missed out so far.

At 3.45 p.m., I started to create a draft of the maintenance plan and typed in the information using Microsoft Excel. Tee had told me to finish the task and there would be further details to be included as well.