You are purchasing a downloadable pdf of this Standard. This specification defines the requirements for selecting and evaluating mineral and slag abrasives . 6 Feb JETMAG® abrasive was analyzed in accordance with the required qualification tests of. SSPC-AB 1 for specific gravity, hardness, weight. 15 Feb Mineral and Slag Abrasives (Abrasive Specification No. 1).
|Published (Last):||4 January 2010|
|PDF File Size:||18.54 Mb|
|ePub File Size:||20.33 Mb|
|Price:||Free* [*Free Regsitration Required]|
The Importance of Monitoring Abrasive Cleanliness
I do not think anyone can confidently quantify sspc contamination transfer to a surface during abrasive blast cleaning, as there are too many variables to consider.
This allows sspc ab 1 contractor, inspector, and owner to identify any potential issues with the method before it becomes a larger, more costly problem.
Recyclable Encapsulated Abrasive Media Each standard has different requirements based on the type of media but are identical sspc ab 1 it sspc ab 1 11 the quality control tests for oil 11 and water-soluble contaminants. The slurry is then poured through filter paper to prevent silt sspc ab 1 fouling the probe and conductivity of the filtered extract is measured. Thank you for your question Mr.
March 3, at Although it may not be required by the specification, it is good practice to first conduct a test panel to confirm the planned method of surface preparation will meet the specification. Kaunteya, the following is a response from the author, John Todd: There are several indirect requirements, including: This is especially true for coatings in a marine service environment or immersion, such as sspc tanks.
Leave a Reply Cancel reply Your email address will not be published. Surfaces contaminated with salt are much more likely to experience failures, such as blistering, than non-contaminated surfaces even at relatively low concentrations.
I agree that continued monitoring is highly recommended, especially with recyclable materials, since localized surface contaminants can become widespread when entered into the abrasive blasting media. How can I tell if the abrasive is contaminated? There are sspc ab 1 factors that sspc ab 1 quality and productivity during abrasive blast cleaning operations, but the abrasive quality is critical for long-term performance of the applied coating system.
The Importance of Monitoring Abrasive CleanlinessKTA University
April 5, at 3: The following is from the author, John Todd: Abrasive embedment is inevitable sspc ab 1 is not normally detrimental, but if the abrasive is contaminated, so is the embedment. Abrasive manufacturers may have performed laboratory analysis of the product, but this does not satisfy the requirements of SSPC abrasive standards.
Thank you for the question. If wb are applied to improperly prepared surfaces, the system is much more likely to fail prematurely. This of course does not exclude regular sspx during actual job. This field test, commonly known as the vial test, requires sspc ab 1 a sample of abrasive be placed in a clean, sealable container.
If oil spsc visually evident, the abrasive fails the test. June 16, at sspc ab 1 March 7, at 9: However, many will invoke one of more of the SSPC abrasive blast cleaning standards e.
The inspector shall ask the blasting team to do blasting job on a test plate of a convenient bigger size and compare with standard panel. More importantly, it does not reveal dspc current condition sspc ab 1 the abrasive. At least from sspc ab 1 experiences. Abrasive blast cleaning is the most common and productive form of surface preparation. This field test szpc equal zb abrasive and deionized water mL of each that are combined and are sspc ab 1 stirred for 1-minute with an 8-minute standing time between stirs to leach any soluble salts from the abrasive.
SSPC-AB 2 requires additional field and laboratory tests for cleanliness to help ensure the abrasive recycling equipment is functioning properly and that the abrasive operating mix is still adequately sized. Proper surface preparation is one of the most critical steps towards maximizing the life of a coating system.
AB 1, Mineral and Slag Abrasives
Abrasive selection is a key component to an abrasive blast system. The cleanliness of the abrasive whether new or recycled is equally important. Gurudas, the following is a reply from the author, John Todd: Which abrasive cleanliness standard should be used? Sspc ab 1 never had a big problem. The surface of the water is then visually examined for any oil droplets sspc ab 1 sheen. Project specifications may not specifically address abrasive cleanliness.
Oil transferred to the substrate can cause film defects e. December 23, at 7: This test also sspc ab 1 whether the abrasive is excessively dirty. This could cause widespread failures and become very expensive to repair.