MAINTENANCE OF AN EQUIPMENT IN THE DESIRED TEMPERATURE RANGE

1.0    PURPOSE:
    
    To describe a  standard operating procedure (SOP) for maintenance  of  an equipment in the desired temperature range.
        
2.0    SCOPE:
    
    The SOP describes in detail the method  of  maintenance  of  an equipment in  the  desired  temperature range.
    
3.0    RESPONSIBILITY:
    
    The  responsibility  of maintenance  of  an equipment in  the  desired  temperature range as per the SOP lies with the staff of the rank not lower than operator of the production department.
    
    The responsibility of preparing, reviewing and approving the SOP lies with the Officer (Production), Head of Production and Head of QAD  respectively.
    
4.0    METHOD:
    
4.1    MAINTENANCE BELOW 25 DEGREE C.
    
4. 1.1    Check whether jacket is empty and close jacket drain valve.
    
4. 1.2    Open jacket outlet pipe and keep in  service manifold drainage. Connect inlet hose pipe to chilled water inlet valve.
    
4.1.3    Open   chilled water inlet valve slowly and allow water  to  be filled in the jacket.
    
4.1.4    After water came out from jacket outlet line hose pipe, close the chilled water inlet valve. Connect the outlet hose pipe to chilled water outlet valve. Open the chilled water outlet and inlet valves to allow the chilled water to circulate in the jacket.
    
4.1.5    Close the inlet and outlet valves, when the temperature reaches the upper limit in the  range.
    
4.1.6    Check the temperature  at regular intervals with  thermometer.
    
4.1.7    If  the temperature reaches the upper limit in the range,  open the inlet and outlet valves of chilled water, till the temperature  reaches 2 degree C less than upper limit  and  close  the chilled water valves.
    
4.2    MAINTENANCE BELOW 15 DEGREE C.
    
4.2.1    Remove chilled water from jacket through drain valve.
    
4.2.2    Close the jacket drain valve.
    
4.2.3    Open  jacket outlet  pipe and keep in  service manifold  drainage. Connect inlet hose pipe to brine inlet valve.
    
4.2.4    Open   brine  inlet valve and allow brine to be filled  in  the jacket.
    
4.2.5    After  brine came out from jacket outlet line hose pipe,  close  the  brine inlet valve. Connect the outlet hose pipe  to  brine outlet  valve. Open the brine outlet and inlet valves to  allow the brine to circulate in the jacket. 
    
4.2.6    Close the inlet and outlet valves, when the temperature reaches the upper limit in the  range.
    
4.2.7    Check the temperature  at regular intervals with  thermometer.
    
4.2.8    If  the temperature reaches the upper limit in the range,  open  the  inlet  and outlet valves of brine,  till  the  temperature reaches  2 degree C less than upper limit  and close the  brine valves.
    

4.3    MAINTENANCE ABOVE 30 DEGREE C.
    
4.3.1    Empty  the jacket of water/brine by opening jacket drain  valve (if  the brine is there in the jacket, drain the brine  through jacket  brine valve. After draining brine, clean the jacket  by circulating  tower water and drain. Close jacket  drain  valve.  Open jacket outlet pipe and keep in  service manifold drainage.  Connect inlet hose pipe to tower water inlet valve. Open  tower water  inlet valve and allow water to be filled in the  jacket.   After  water came out from jacket outlet line hose pipe,  close  the tower  water inlet valve.  Remove water from jacket through drain valve).
    
4.3.2    Connect the jacket outlet line hose pipe to steam valve.  Close  the  jacket inlet valve. Close the jacket drain valve and  open steam trap.
    
4.3.3    Open  the  steam valve slowly,  when  the  temperature of the reaction mass reaches  5 degree C. below the lower  limit  of desired  temperature range,  close the steam valve and  observe  the raise in temperature.
    
    Note:    In case the temperature raises above the upper limit  in the  range,  remove the hose from the steam valve and  keep  in service  manifold   drainage. Open the jacket inlet  valve  and  connect   the  hose pipe to tower water inlet  valve  and  open inlet valve.
    
4.3.4    If  temperature reaches the lower limit of desired  temperature range, open the steam valve slowly, till the temperature reaches  2 degree C less than the upper limit and then  close  steam valve.
    
4.4    MAINTENANCE AT ROOM TEMPERATURE.
    
4.4.1    Check  whether jacket is empty. If jacket is not empty  proceed to step 4.4.2.
    

4.4.2    Empty  the jacket of water/brine by opening jacket drain  valve  (if  the brine is there in the jacket, drain the brine  through jacket  brine valve. After draining brine, clean the jacket  by  circulating  tower water and drain. Close jacket  drain  valve.  Open jacket outlet pipe and keep in  service manifold drainage.  Connect inlet hose pipe to tower water inlet valve. Open  tower  water  inlet valve and allow water to be filled in the  jacket.  After  water came out from jacket outlet line hose pipe,  close  the tower  water inlet valve.  Remove water from jacket through drain valve).
    
4.4.3    Open jacket outlet pipe and keep in  service manifold drainage.  Connect  inlet hose pipe to tower water inlet valve. Close  the jacket drain valve.
    
4.4.4    Open   tower water inlet valve and allow water to be filled  in  the jacket.
    
4.4.5    After  water came out from jacket outlet line hose pipe,  close  the  tower water inlet valve. Connect the outlet hose  pipe  to tower  water  outlet  valve. Open the tower  water  outlet  and inlet  valves to allow the water to be collected in  the  tower                 water sump.
    
4.4.6    If  the temperature reaches room temperature allow it to  maintain at the temperature only.
    
5.0    RECORDING:
    
    The   temperature   readings   will   be   recorded   by  the  operator/supervisor  in the temperature record attached to  the batch manufacturing sheet.
    

Temperature range, production, temperature