SOP For Condenser Rubber Ball Cleaning System HBS
SOP For Condenser Rubber Ball Cleaning System HBS
SOP For Condenser Rubber Ball Cleaning System HBS
Copyright
The copyright of this procedure, together with all confidential information contained herein is the
sole property of SEPCOIII Haveli Bahadur Shah 1230 MW Combined Cycle Power Plant.
It may be copied in full or in parts only by the Management / personnel and only for the purpose of
Company related activities. Disclosure and copying of any information contained within this
procedure to any person (s) outside the employee of company without written
permission/authorization of the Management Representative or Plant Manager is strictly prohibited.
Amendment Sheet
Section Amendment
Date Revision # Amendment Detail Signatures
Affected Approved by
SOP FOR CONDENSER RUBBER BALL CLEANING SYSTEM
DOC. # SEPCOIII-HBS-OPR-SOP-31 Issue # 00 Issue Date: 26-05-2019
This operating procedure describes the standard and reliable operating guidelines to safely start the
Rubber Ball Cleaning System leading to its normal operation resulting in the optimum performance
within specified operating limits. This procedure also covers the shutdown of the Rubber Ball Cleaning
System.
2.0 REFERENCES
P&ID # 33-F09221S-J0901-02,
Vendor Technical Manuals
Operation and Maintenance Manual for Rubber Ball Cleaning System
3.0 PREREQUISITE
All PTW job card work request on system are cancelled and de-isolations have been done.
General Safety checks have been carried out.
Once through or Cooling Tower circulating water system is in operation.
System valves lined up as per APPENDIX-I
System Instruments checked as per APPENDIX-II
Electrical Distribution System status is as per APPENDIX-III
The 11 kV and 400 V electrical systems are energized for providing the electrical power required
for starting and sustaining the operations of the relevant electrical equipment.
There is no obstruction in the motor cooling air path(s).
The following precautions and limitations apply specifically to the operation of the Rubber Ball
Cleaning System.
Exposed parts of all rotary equipment must be guarded properly.
All personnel handling the system should be familiar with the following:
CAUTION
In addition to the items listed above, it is duty of every person who may be
concerned with work on or adjacent system to make themselves conversant with
safety rules and requirement relating to any activities with which they an
involvement. It remains the responsibility of all employees to take reasonable care
for health and safety for themselves, their colleagues and the general public who
may be affected by their acts or omissions.
CAUTION
Immediately following start-up, check the system to verify that conditions are normal.
Abnormal conditions, alarms or malfunctions are to be investigated and corrected as
soon as possible.
SOP FOR CONDENSER RUBBER BALL CLEANING SYSTEM
DOC. # SEPCOIII-HBS-OPR-SOP-31 Issue # 00 Issue Date: 26-05-2019
CAUTION
Particular attention should be given to normal operating conditions of the Rubber
Ball Cleaning System, its equipment, and components to detect variations from
their normal operating conditions and function. Abnormal conditions, alarms or
malfunctions are to be investigated and corrected as soon as possible.
6.0 PROCEDURE
Since there are microorganism, organism, sand etc in circulating water and flowing speed of circulating
water is generally low, it is easy to form soft and hard scale on internal wall of condenser stainless steel
tube, It not only affects heat exchange coefficient and increase difference between cooling ends, but
also lowers through-flow area and increase flow resistance. Therefore, it weakens economy of
operation severely.
The function of condenser rubber ball cleaning system is to apply rubber ball in condenser water
chamber with rubber ball cleaning pump, squeeze the rubber balls with the diameter of slightly more
than that of cooling stainless steel tube which are distributed in circulating water evenly through the
stainless steel tube depending on the pressure of circulating water so that it can improve the cleanness
of cooling stainless steel tube by removing scale on stainless steel tube wall when unit is in operation.
Therefore, it is favorable for enhancing thermal economy of unit operation.
Main equipment’s are comprised of two sets of independent devices of rubber ball dispensing and
recovery, local control panels and relevant valves and pipes. One or two sets of rubber ball cleaning
devices can be started for single or two-side cleaning of condenser.
6.1.3 Ensure all the drain valves in the system are in closed position.
6.1.4 About 1200 rubber balls taken and should be immersed in warm water for 24h.
6.1.5 After immersing, unqualified rubber balls should be removed if there’s a great
number of unqualified ones, spare rubber balls should be used.
6.2 STARTUP
6.2.1 Ensure all the breakers are in the appropriate position as per Appendix III of this
procedure.
6.2.2 Local selector switch keep on AUTOMATIC REMOTE position.
6.2.3 Go to DCS Main Menu Screen. From this screen go to Condensate CIR WTR system
Screen.
6.2.5 Click on CNDSR RBCS #1 OR 2, a control pop-up will appear.
6.2.6 Give start command to the respective CNDSR RBCS.
6.2.7 Start the ball recirculating pump water is carried through the ball recirculating pipe. The
screens are in final position OPERATION in order to separate the cleaning balls released
from the ball collector from the cooling water flow.
6.3 SHUTDOWN
6.3.1 Go to DCS Main Menu Screen.
6.3.2 Click on CNDSR RBCS #1 OR 2, a control pop-up will appear.
6.3.3 Give stop command to the respective CNDSR RBCS.
6.3.4 A timer for 7200 second start for collect the ball in ball collector and outlet MOV of
ball collector close. When timer finished ball recirculating pump stop automatically.
SOP FOR CONDENSER RUBBER BALL CLEANING SYSTEM
DOC. # SEPCOIII-HBS-OPR-SOP-31 Issue # 00 Issue Date: 26-05-2019
N/A
8.0 APPENDICES
8.1 APA8.1 APPENDIX-1 Pre start check list for valves line up.
8.2 APPENDIX-2 Pre start check list for instrumentation.
8.3 APPENDIX-3 Pre start check list for Electrical distribution.
APPENDIX-I
APPENDIX II
APPENDIX-III