Four new waterjetting standards will replace SSPC-SP 12/NACE No. 5, the joint standard, “Surface Preparation and Cleaning of Metals by Waterjetting Prior to Recoating,” according to SSPC: The Society for Protective Coatings and NACE International.
Both organizations have withdrawn SSPC-SP 12/NACE No. 5.
|Lydia Frenzel chaired the joint waterjetting standards committees.|
Lydia Frenzel of the Advisory Council chaired the Special Task Group committees working on the standards, and Rich Burgess of KTA-Tator was vice-chair.
Why the Revision?
The 2012 revision of the 2002 version of SSPC-SP 12/NACE No. 5 standard, “Surface Preparation of and Cleaning of Metals by Waterjetting Prior to Coating” changes the single standard into four separate standards, each addressing a different level of surface cleanliness.
The organization of the four resulting standards has been revised to more closely follow the organization of the dry abrasive blast cleaning standards, and allows specifiers to specify levels of cleanliness for waterjetting by use of separate standards, as is done when specifying levels of dry abrasive blast cleaning, said Michael Damiano, SSPC Director of Product Development.
What’s New and What’s the Same
The titles of the new standards are:
• SSPC-SP WJ-1/NACE WJ-1, “Waterjet Cleaning of Metals—Clean to Bare Substrate (WJ-1)”;
• SSPC-SP WJ-2/NACE WJ-2, “Waterjet Cleaning of Metals—Very Thorough Cleaning (WJ-2)”;
• SSPC-SP WJ-3/NACE WJ-3, “Waterjet Cleaning of Metals—Thorough Cleaning (WJ-3)”; and
• SSPC-SP WJ-4/NACE WJ-4, “Waterjet Cleaning of Metals—Light Cleaning (WJ-4).”
Although now contained in separate standards, the definitions of the four surface cleanliness levels have changed very little from the definitions in the 2002 version of the standard. Clarification that permissible staining or tightly adherent matter must be evenly distributed over the surface has been added to WJ-2 and WJ-3. In addition, a clarification of “tightly adherent” (cannot be lifted with a dull putty knife) has been added to WJ-2, WJ-3 and WJ-4 definitions, according to a fact sheet SSPC provided to PSN.
As in the original standard, descriptions of three degrees of flash rusting are provided in each of the revised waterjetting standards. These descriptions are based on the degree to which the rust obscures the carbon steel substrate and the degree of adhesion to the substrate. The color of the rust is no longer addressed.
Many Hands Helped
Frenzel offered these thoughts on revising the document.
“My heartfelt thanks to the task group members. It is the support of Rich Burgess and Kat Coronado that helped assure this final publication. The members of the Task Group and interested parties have been wonderful to work with. We had 12-15 official volunteers, and about 50 in the ‘interested parties’ and about 200 people get a chance to ballot. Again, thanks to the volunteers from NACE and SSPC.”
|Rich Burgess was vice-chair of the joint waterjetting standards committees.|
Burgess had this to say about the work of the committee:
“I applaud all of the Committee members that contributed their time, knowledge and stayed the course. I believe each of us would also acknowledge that the success of the committees in having the new waterjetting standards published was fueled by the efforts of Lydia Frenzel. Lydia proved to be a tireless worker, brought us expertise and…somehow knew when the Committee needed an arbitrator and when it needed a moderator. Thank you Lydia.”
The target date for release of the standards is July 9, 2012, said Trudy Schreiner, NACE Editor/Staff Liaison, who, along with SSPC Standards Development Specialist Aimée Beggs, worked with the committees.
Also on July 9, an SSPC/JPCL webinar on the new WJ standards will be held. Burgess will present the webinar.
The standards will be available from SSPC and from NACE.