Internship in Nestlé - 16-17th Jan 2017 (8am - 5pm)

Monday, 16^th Jan 2017 (8am - 5pm)

At 9.15 a.m., we had a daily review meeting with the operators.

At 10.00 a.m., as usual, I walked around and observed the unit operations in WWTP. Tee and the person in charge of filter press commissioning, Chow, were having a meeting at the site. Afterward, we were informed that the testing of the filter press system would be conducted by tomorrow while an operation training session for us would be held this Wednesday.

Later I revised and rechecked the material balance and calculated the parameters of WWTP generated.

At 4.00 p.m., we had a meeting in the DPRS control room. Recently the fiber membranes of MBRs are under testing procedure using clean water, in which water is recirculating between post-biological aeration tank and MBRs. Besides that, the DPRS training session is tentatively scheduled for this Thursday. Tee had requested them to provide the following information:

a)       guidelines and a checklist of water parameters to be monitored during MBR operation;

b)      a full schedule for the whole DPRS commissioning; and

c)      basic DPRS operation, including troubleshooting and maintenance schedule during the training session. 

Tuesday, 17^th Jan 2017 (8am - 5pm)

Between 8.15 and 8.45 a.m., as usual, I walked around WWTP, especially the new DAF site, the filter press site, and the DPRS site. The testing of MBR fiber membranes by water recirculation was stopped as there was water leakage at certain parts of the membranes.

At 9.15 a.m., we had a meeting with the operators. Tee informed us there are several cases relating to safety issues in Nestlé factories and again reminded us to report any hazards found in the working area as soon as possible to minimize the accident.

At 9.30 a.m., I updated the FLOCs by adding the information relating to maintenance.

Between 11.00 a.m. and 3.30 p.m., I was in WWTP while Chow was conducting the testing procedure of the membrane chamber filter press system for the first time. I took the opportunity to ask him some detailed questions to understand the operation of the filter press system. Meanwhile, I had observed throughout the operation.

At 4.00 p.m., I met Fam in the DPRS control room but Maurice and Leon were not there. Then I followed Fam to have a short discussion with the process engineer, Istiak at the new DAF construction site. He would be in charge of new DAF commissioning.

At the same time, a cassette of fiber membranes was taken out from the MBR tank by using a truck-mounted crane. Later, we saw Leon and some workers were busy checking the condition of fiber membranes. The cassette of membrane modules was immersed in a water tank. They injected the compressed air to detect the leakage parts and rearranged the modules properly.