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Presented by: Derrick Castle, PCS Kentucky Transport ation Cabinet

Writing a Good Specification for Bridge Painting. Presented by: Derrick Castle, PCS Kentucky Transport ation Cabinet. Learning Outcomes. At the end of this webinar, you will be able to: Recognize the essential elements needed in a coating specification to obtain quality work. Introduction.

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Presented by: Derrick Castle, PCS Kentucky Transport ation Cabinet

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  1. Writing a Good Specification for Bridge Painting Presentedby: Derrick Castle, PCSKentucky Transportation Cabinet

  2. Learning Outcomes • At the end of this webinar, you will be able to: • Recognize the essential elements needed in a coating specification to obtain quality work

  3. Introduction A detailed coating specification is a complex and sometimes confusing document to navigate. Yet, it is the rulebook for QC and QA personnel responsible for inspecting work

  4. Introduction It takes years of experience and the proper qualifications (e.g., SSPC Protective Coatings Specialist) to develop a good coating specification

  5. Specification The part of the contract that details the qualitative and quantitative requirements for the finished product

  6. Coating Specification The single most important characteristic of a specification is that it must be part of a competent design, defined loosely as complete, accurate and inclusive of all information that contractors need to accurately estimate the cost of complete performance

  7. Coating Specification Each coating specification for a steel bridge structure should start with SSPC PA 1 as the foundation Each coating specification for a concrete bridge structure should start with SSPC PA 7 as the foundation

  8. SSPC-PA 1 SSPC-PA 1, Shop, Field, and Maintenance Painting of Steel

  9. SSPC-PA 7 SSPC-PA 7, Applying Thin Film Coatings to Concrete

  10. Key Elements Scope of project References Precedence of documents Definitions Submittals Work Plan

  11. Key Elements (cont’d) Description of project site conditions Delivery and storage of materials and equipment Pre-cleaning prior to surface preparation Surface preparation Surface preparation media

  12. Key Elements (cont’d) Specified types of coating materials Coating materials delivery and their identification Acceptable ambient conditions Coating application

  13. Key Elements (cont’d) Kits and equipment for inspection testing Quality control inspection and documentation Quality assurance inspection and documentation Warranty

  14. Scope of Project • Introduction that describes the general scope of the project. It should cover requirements for all: • Materials • Labor • Equipment and tools

  15. Scope of Project (cont’d) It should provide a description of the project location May include a map or plan of the work area Define clearly what areas ARE to be coated and what areas are NOT to be coated

  16. References A reference section of the specification should provide a listing of all documents cited in the specification and NO others

  17. Precedence of Documents Set an order of precedence in the event that there is a conflict or an ambiguity between referenced documents

  18. Definitions Include definitions of all words and terms used in the specification that are not universally understood

  19. Submittals Require project documentation (objective quality evidence) that the contractor is to provide to the owner to support complete conformance

  20. Submittals (cont’d) • A sample of submittals required prior to initiation of production: • Any required permits, access rights, etc. • Project specific work plan • Project specific safety, health and environmental protection plan • Containment drawings

  21. Submittals (cont’d) • Manufacturer’s PDSs • Manufacturer’s MSDSs • Samples of specified liquid coatings • Coating draw-down films • Laboratory test results • Certificates of product conformity • Warranty

  22. Submittals (cont’d) • Sample submittals required after initiation of production: • Request for information (RFI) log • Contract change order log • Submittal log • Daily production reports • Daily inspection and test reports

  23. Submittals (cont’d) • Corrective action requests (CARs) • Nonconformity log • Corrective action log • Preventive action log

  24. Work Plan The specification should require the contractor to develop a work plan that translates the requirements of the specification into a series of steps for field implementation

  25. Work Plan (cont’d) • The work plan may include such procedures as: • Health, safety and environmental compliance plan • Confined space entry plan • Procurement of necessary material • Procurement of necessary jobsite and support equipment

  26. Work Plan (cont’d) • The work plan should include: • Assigning the management team to the project • Obtaining craft workers with the necessary skills • Mobilization of all of the above • Worker training and personal protective equipment (PPE) needed • Inspection and test plan

  27. Work Plan (cont’d) • Should also include written procedures detailing the individual production processes being conducted • Examples include: • Mobilization and setup • Surface preparation • Coating application and curing • Clean-up

  28. Work Plan (cont’d) ✓-OK When using a work plan, optional hold or check points may be placed in the specification to permit inspection for conformance of work to date before proceeding further

  29. Description of Project Site Conditions Information on any environmental limitations or other conditions at the project site that might affect project work should be presented This section may also describe where the contractor can locate work, equipment, trailers, lunch room and shower facilities

  30. Delivery and Storage of Materials and Equipment A delivery and storage section of the specification should contain special requirements for packing and shipping products, equipment and their components

  31. Delivery and Storage of Materials and Equipment (cont’d) Conditions for acceptance of these items at the project site should also be included, along with special storage, handling and disposal requirements necessary to prevent contamination or damage

  32. Pre-Cleaning Prior to Surface Preparation This section of the specification describes the required pre-cleaning actions before the actual surface preparation for coating It also describes the required levels of pre-cleaning

  33. Surface Preparation • Any required special equipment or procedures should be specified along with the required level of cleaning and profiling • Other requirements that may be included are: • Field checking for cleanliness of abrasives • Field checking for cleanliness of air supply used in abrasive blasting and blow down • Quality of water used in waterjetting

  34. Surface Preparation Media The specified media should be tested for conformance to the specification before use, e.g., expendable abrasive media for oil content, crystalline silica and soluble contaminants by the referenced test methods in SSPC-AB 1

  35. Specified Types of Coating Materials • A materials section of the specification lists the coating materials to be used on the project. It may provide: • The names and code identifications of approved products • A qualified product list (QPL) • A description of the generic material • A description of the required performance

  36. Coating Materials Delivered and Their Identification Upon delivery, the coating materials must be identified as those specified and having sufficient shelf life to meet contract requirements It is good practice to require checking of the condition of the containers upon delivery and the condition of the coating in the containers prior to mixing

  37. Acceptable Ambient Conditions • This section of the specification lists applicable ambient conditions for surface preparation and coating application and curing. These include, but are not limited to: • Air temperature • Surface temperature • Dew point/relative humidity • Wind speed • Lighting for all work areas

  38. Coating Application An application section of the specification should state acceptable methods that can be used to apply the specified materials

  39. Coating Application (cont’d) • Application concerns are listed below: • Condition in container • The ratio by volume of the components to combine • Instruction for mixing components • Induction time at different temperatures • Amounts of thinner, if any, permitted • Ambient conditions for application

  40. Coating Application (cont’d) • Pot life at different temperatures • Recoat window • Contrasting colors for multiple coat systems • Stripe coating requirements • Acceptable dry film thickness range

  41. Kits and Equipment for Inspection Testing Inspection kits and other equipment necessary for testing for surface cleanliness, surface profile and coating thickness must be available at the work site in order for production workers to monitor quality of their own work and QC personnel to verify that the specification requirements are being met

  42. QC Inspection and Documentation Project documentation, including inspection and testing records, must be used to determine the contractor’s compliance with specification requirements and approved procedures These forms should be signed by the coatings inspector

  43. Quality Assurance • A quality assurance section of the specification includes prerequisites, standards, limitations and criteria that define the quality for products and work. They may include, but are not limited to: • Qualifications of the coating contractor • Qualifications of certified protective coating specialist (PCS)

  44. Quality Assurance (cont’d) • Qualifications of coating inspection company • Qualifications of a quality control (QC) coating inspector • Qualifications of individuals performing abrasive blasting, waterjetting, coating application, airless spray and plural component spray

  45. Quality Assurance (cont’d) • Qualifications of a certified industrial hygienist (CIH) • Qualifications of a testing laboratory for coatings • Qualifications of a testing laboratory for abrasives • Certifications of materials • Regulatory requirements • Field sampling requirements • Pre-construction conference and coordination meeting

  46. Warranty • The warranty section of the specification requires: • That all materials and equipment be of good quality and new • That the work be free from defects not inherent in the quality required or permitted • That the work conforms to all contract documents • The work is suitable for the intended purpose

  47. Summary A coating specification is a legally binding document. It is a contract between the owner and the contractor. While a coatings specification is a legal document, it must be workable and understandable. A coating specification should also be practical, so that the owner can effectively communicate the desired outcome, including the project schedule. The specification should not be unreasonably restrictive, but should anticipate problem areas that the contractor may encounter and must overcome to successfully complete the contract.

  48. Questions

  49. Conclusion This concludes our webinar for today. Please join us for our next webinar, March 16th at 11am EST on Confined Space Safety

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