Hydrocleaning
Overview
 
Hydrocleaning, high pressure cleaning or waterblasting is the use of water propelled at high speeds to clean surfaces and materials. By focusing and pressurizing the water stream, the force generated can remove, for example:
  • Paint from walls, metal, and highways
  • Rubber from runways (airfield rubber removal
    Airfield rubber removal
    Airfield rubber removal, also known as runway rubber removal, is the use of high pressure water, abrasives, chemicals and/or other mechanical means to remove the rubber that builds up on airport landing strips...

    )
  • Sealants and membranes from concrete
  • Gum from side walks

In order to standardize cleaning operations and surface preparation specifications the Steel Structures Painting Council (SSPC) has adopted the following four definitions for cleaning operations using water jetting technology:
  • Low-pressure water cleaning (LP WC) is the use of water pressure less than 5,000 psi (34 MPa) for cleaning.
  • High-pressure water cleaning (HP WC) is the use of water pressure between 5,000 to 10,000 psi (34 to 70 MPa) for cleaning.
  • High-pressure water jetting (HP WJ) is the use of water pressure between 10,000 to 25,000 psi (70 to 170 MPa) for cleaning.
  • Ultrahigh-pressure water jetting is the use of pressures above 25,000 (170 MPa) for cleaning.

Any time a hard surface, such as asphalt, concrete or metal, needs to have a coating applied, the surface must first be prepared.
Quotations

Japanese:We stand in awe of that which cannot be seen, and we respect with every fiber that which cannot be explained.English:We stand in awe before that which cannot be seen.

Japanese:People are able to hold on to hope,since death is that which cannot be seenEnglish:People have hopeBecause they cannot see Death standing behind them

Japanese:If I were the rain, that binds together the earth and the sky, whom in all eternity will never mingle, would I be able to bind two hearts together?English:If I were the rainThat joins sky and earth that otherwise never touchCould I join two hearts as well?

Japanese:We come together,Like drops of water, like the astral bodiesWe oppose each otherLike magnets, like the colors of skin

Japanese:Unless I grip the sword, I cannot protect you.While gripping the sword,I cannot embrace you.

English:Yes, there is no Fate for usOnly those who are swallowed byIgnorance and fear and miss a stepFall into the rapid river called Fate

English:We should not shed tearsThat is a surrender of the body to the heartIt is only proofThat we are beings that do not knowWhat to do with our hearts

English:If it rusts, it can never be trustedIf its owner fails to control it, it will cut himYes, pride isLike a blade

English:Oh, all of us dreamThat we are flying the skiesWith our eyes open

Everything in this worldExists to wear you down

 
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