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Edisi : Vol.2, No.1 (2014)
Judul : THE INFLUENCE OF FLOW SPEED AND TIME PERIOD ON RUBBER LINING DAMAGE IN CIRCULATING WATER LINE OF STEAM POWER PLANT CONDENSER
Penulis : DITA FATMALA
Markus Diantoro
Nasikhudin
Abstrak :

ABSTRACT
Fatmala  Dita.  2014.  The  Influence  of  Flow  Speed  and  Time  Period  on  Rubber  Lining
Damage  in Circulating Water Line of Steam Power Plant Condenser. Thesis Physics
Department  Faculty  of  Mathematics  and  Science  State  University  of  Malang.
Advisors: Dr. Markus Diantoro M.Si. Nasikhudin S.Pd M.Sc.
 
Keywords: Flow Speed Time Period Rubber Lining Circulating Water Line Condenser
 
Rubber  lining  is  the  one  of  lining  that  made  by  rubber.  Rubber  usually  used  for
protection of both the interior of tanks for acids and alkalis and of the exterior of pipes in the
splashzone. Steam Power Plant Paiton Unit 7 & 8 – 3 is the one of power plant that provides
electricity  to  the area of Java and Bali. To provide electricity  for  the area of Java and Bali
Steam Power Plant Paiton Unit 7 & 8 and 3 are equipped with devices that support the overall
system. One of these devices is circulating water line of condenser that used as cooler device.
The rubber lining applied inside the circulating water line to prevent corrosion.
In  this  research  firstly  determine  the  research  location.  The  research  location  is
circulating  water  line  of  condenser  PT.  IPMOMI  (Steam  Power  Plant  Unit  7  &  8).  The
instruments  that  used  in  this  research  are  rubber  lining  electronic  thickness  gauge  high
voltage  spark  tester  (holiday  tester)  and  camera.  Obtained  data  of  this  study  are  scratch
blister overlap thickness changes and pinhole on the surface of rubber lining within certain
flow  speed  of  fluid  and  time  period.  To  find  the  scratches  blisters  and  overlaps  on  the
surface of rubber lining conducted direct inspections in the location that has been determined
and were  photographed  using  digital  camera.  Inspection method  that  has  been  used  is  the
visual  inspection  method.  To  measure  the  thickness  changes  on  rubber  lining  conducted
thickness  test  using  electronic  thickness  gauge  (type:  PosiTector  6000).  Last  to  find  the
pinholes  on  the  surface  of  rubber  lining  conducted  holiday  test  using High Voltage Spark
Tester. The number of scratches blisters overlaps thickness changes and pinholes expressed
in percentages (%).  
The result of  this research  is  increase  in flow speed of fluid and  time period of fluid
flow  through  the  line  will  cause  the  rubber  lining  damage more  severe.  To  optimize  the
rubber  lining  as  corrosion  protection  in  circulating  water  line  of  condenser  require  to
decrease the flow speed of fluid refining piping design reducing the rubber lining joint and
conduct the inspection more intensive than usual for minimize the rubber lining damage.

Kata Kunci : Flow Speed; Time Period; Rubber Lining; Circulating Water Line; Condenser
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