Water Jet Cleaning

1. Where to use jet cleaning

-Jet cleaning is applied to diverse fields ; eliminating rust or scale from steel sheet or internal and external part of pipe, boiler, tank, harbor facility, pier, vessel, inside/outside surface cleaning of building, etc.

Before cleaning After cleaning
Heater Exchanger Cleaning

2. The effects of scale on the outside of a boiler tube and what jet cleaning can do about it

A .Effect of scale on the outside a of boiler tube

Boiler Efficiency Falloff		Impediment of Heat Transfer

		Rise in temperature of waste gas

		Loss of ventilation

Boiler tube Durability contraction		Tube corrosion

		Tube explosion Accident

Before cleaning After cleaning

B .Effect of Tube Cleaning

Elevation of Boiler credibility

Reduction of Fuel consumption

Durability extension for boiler /b>

ex) a) an example of the 2nd. Power plant in Japan (375MW)

Temperature of waste gas of Eco Exit : 20℃ decresed
Loss of draft from heating part 150mm H2O decreased H20 decresed
BOILER efficiency : enhanced by 1.17% in case of regular load)

b) An example of Nippon Mitubishi Boiler (100T/H)

Temperature of waste gas of Eco Exit : 50~60℃ decresed
Loss of draft from heating part : 90㎜ H2O decresed
Conversion to plant efficiency : enhanced by 0.37% in case of regular load

3. Exchanger Tube Chenining (Heater and Condenser)cleaning

Ram-6 Ream-A-Matic
The Ultimate Rotary Tube Cleaning Machine
Ideal for Cleaning Internally Enhanced Tubes

Super Scrubbers
The Most Advanced Tube Cleaning Projectiles
Ideal for Cleaning Power Plant Condenser Tubes

4. Boiler Outside JET CLEANING Process

1. Preliminary Research
    - Check for boiler structure
    - Check for attachments is on boiler and taking a picture

2. Protetion
   - Water proofing for lower part of hearth
   - Set-up a scaffold
   - Protection for castable of burner part

3. Preparation for cleaning
   - Set up of cleaning facility
   - Install and check for service and waste water pipes
   - Chemical annexing

4. Cleaning work
   - Scale softness by spraying warm water
   - The 1st. cleaning (cleaning by low-pressure)
   - The 2nd. cleaning (cleaning by the 3rd. cleaning)
   - The 4th. Passivation process
   - PH checking for waste water
   - Others

5. Confirming of cleaning finish
   - Visible checking and taking a picture
   - PH check of heatign surface
   - Others

6. Post prosess
   - Neutralization of waste water
   - Accumulated scale elimination from the
   - Coating for damaged castable
   - Remove machinery and clean the surroundings

7. Completion