Answer Happy

(c) Considering the following parameter and guide word combinations, use your knowledge of HAZOP to evaluate the drying operation using the filter dryer shown in Figure 1 and hence develop deviations which could jeopardise the safe operation of the unit. Combination Parameter Guide Word Comments 1 Agitation More 2 Temperature More Applied to the powder bed 3 Inerting Other than In this case air enters the system through an open path to the atmosphere For each of these three given parameter and guide word combinations, complete a HAZOP table using the following format: Suggested HAZOP table format: Parameter & (no marks, you are given this information] guide word combination: Deviation: Possible [1 mark] cause(s): [2 marks] Consequences: [3 marks) Existing safeguards [2 marks] Proposed action to further mitigate [3 marks) the risk: You need to provide enough detail in each cell in your table to demonstrate that you have understood the deviation, its causes and consequences, and the existing safeguards so that you can make appropriate mitigation recommendations. Writing one word in each cell is unlikely to score a high mark 123m

Agitator motor with variable speed drives pitched agitator blade can be raised and lowered, rotates clockwise to dig & discharge the filter cake, counter clockwise to smooth the cake surface. The agitator blade incorporates a sensor to measure the cake temperature TIAH DO 9-13 High capacity bursting disk with a vacuum support plate vents to stack on building root RO Wash solvent inlet with spray ball to distribute wash evenly, flow limited by restriction orifice and line earthed to prevent static build up SP Mechanical vacuum seal/ bearing incorporating a high temperature alarm Product suspension inlet from crystallizer distribution plate to form an even filter cake. Vent line with interlock to prevent unintended opening during operation AC Nitrogen niet Steam Cooling water BH &. Filter medium Perforated support plate Filtrate receiver chamber Filtrate outlet valve Contained dry product discharge system feeding rate packing ara dedicated to handling finely divided combustible dust Ritrate receiver PIC Condenser linked to cold HTF Service Figure 1: PSD for hypotheticalitated fier dryer Drawing prepared for CP212, 218 & CP319 am Prof CPIE 1XFeb-2017 Revi Vacuum pump discharging to safe vent Strade Fitrate was receiver Condensate receivet