Table 4.

Overview of the CCPs as provided by the applicant

CCP No 1	The first parameter that must be checked is the content of solids in the fat, which must be below 0.15% w/w. Every production plant is equipped with a laboratory for feedstock analyses, production control and determination of the final product quality. Therefore, the determination of solids can be performed on site. The solid content must be below 0.15% w/w, so, before usage, this content must be measured regularly, e.g. before each unloading. If the value is above the limit, the feedstock must be rejected for biodiesel production and must be reprocessed until the solid content is below the limit.
CCP No 2	The temperature of the reaction mixture for the conversion unit is provided by steam or thermal oil via a heat exchanger. The temperature is measured and automatically controlled as it is also needed to ensure the completeness of the reaction. If the temperature is below the limit of 200°C, the material is not sent for distillation and is automatically transferred from the flash vessel back into the feed buffer tank. It is reprocessed when the temperature is below 200°C.
CCP No 3	The pressure is provided by means of a high‐pressure pump. The pressure is automatically controlled and needed for the reaction. If the pressure is below the limit of 70 bar, the material is not further processed and automatically transferred from the flash vessel back to the feed buffer. It is reprocessed when the pressure is below 70 bar.
CCP No 4	The reaction time is given by the retention time during the conversion process. The flow is performed by a high‐pressure pump (refer to CCP No 3) and controlled by a flow indicator which is connected to the process control system for data monitoring and visualisation. The maximum flow is limited by the process control system. A higher throughput and therefore a shorter retention time are not possible. However, any failure in the pump would cause an increased retention time, which does not adversely affect the PrPSc reduction.
CCP No 5	The distillation is performed under vacuum by means of several vacuum pumps. The vacuum is monitored by pressure indicators. If the pressure is too high (above 10 mbar), the distillation will switch automatically to a stand‐by mode. The products are transferred back into the distillation buffer.
CCP No 6	Temperature is required for the evaporation of the biodiesel. The temperature is monitored by temperature indicators. If the temperature is too low (below 150°C), the distillation will switch automatically to a stand‐by mode and the products are transferred back into the distillation buffer.
CCP No 7	As a final control, the quality of the biodiesel has to be analysed for the parameter ‘triglycerides’, determined according to EN 14105 for maximum 0.05%. If the results exceed the limit, the biodiesel has to be reprocessed in the distillation unit in order to reduce the triglyceride content.
CCP No 8	As a final control, the quality of the biodiesel is analysed for the parameter ‘solids’, determined according to EN 12662 to be below 24 mg/kg (limit according to EN 1421413). If the results exceed the limit, the biodiesel has to be reprocessed in the distillation unit in order to reduce the solid content.