HISTORICAL DOCUMENT. Defines the Light Cleaning (WJ-4) degree of surface cleanliness - one of four levels (WJ- 1,2,3,4) achieved by the use of waterjet cleaning.
HISTORICAL DOCUMENT. Defines the Light Cleaning (WJ-4) degree of surface cleanliness of coated or uncoated metallic substrates achieved by the use of waterjet cleaning prior to the application of a protective coating or lining. WJ-4 provides a lesser degree of surface cleanliness than Thorough Cleaning (WJ-3). Waterjet cleaning to achieve the WJ-4 degree of surface cleanliness is used when the objective is to allow as much of the tightly adherent rust and other corrosion products, coating, and mill scale to remain as possible, but when the extra effort required to remove more of these materials is determined to be unwarranted. Discoloration of the surface may be present. Waterjet cleaning is the use of pressurized surface preparation water for removing coatings and other materials, including hazardous materials, from a substrate to achieve a defined degree of surface cleanliness. The four degrees of surface cleanliness achieved by waterjet cleaning are addressed in separate standards as follows: Clean to Bare Substrate (NACE WJ-1/SSPC-SP WJ-1 [WJ-1]), Very Thorough Cleaning (NACE WJ-2/SSPC-SP WJ-2 [WJ-2]), Thorough Cleaning (NACE WJ-3/SSPC-SP WJ-3 [WJ-3]), and Light Cleaning (NACE WJ-4/SSPC-SP WJ-4 [WJ-4]).
Key words: waterjet cleaning, cleaning, coatings, high-pressure waterjetting, steels.
HISTORICAL DOCUMENT. Defines the Thorough Cleaning (WJ-3) degree of surface cleanliness - one of four levels (WJ- 1,2,3,4) achieved by the use of waterjet cleaning.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Use this error code for reference:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
HISTORICAL DOCUMENT. Defines the Very Thorough Cleaning (WJ-2) degree of surface cleanliness - one of four levels (WJ- 1,2,3,4) achieved by the use of waterjet cleaning.
Requirements for "Industrial" - one of five levels of cleanliness of steel surfaces achieved by blast cleaning with the use of abrasives. (White Metal, Near-White Metal, Commercial, Industrial, Brush Off)