Girth Weld Coating Application Best Practices

October 15, 2009 INGAA Pipeline Construction

Workshop

Surface Preparation

•Cleanliness

•5°F above Dew Point

•Induction Coil

•Rosebud Torch

•Weld preparation

•Compressed Air

•Blast medias

Surface Preparation, Cont.

The preparation is important regardless of the coating type.

Blast Inspection

SSPC clearly defines a near white metal blast finish in SSPC SP-10.The SSPC Vis 1-89 is a great field guide for visual reference.

Heating

Coating TemperatureIndustry standard for temperature monitoring

Fusion Bonded EpoxyMaterial is supplied in 50 to 65 pound boxes.Needs to be stored in a climate controlled environment until use.Prior to application the material should be allowed to acclimate to the environmental conditions.Can be ready for inspection and back fill once the temperature drops below 200°F.

Fusion Bonded Epoxy Application

Automated Powder Ring• Assembly• Operation

Liquid Coatings

Coating components are supplied in kits which are mixed prior to application.It is not recommended to mix partial kits.Use of the correct solvents is very important.Material has a pot life once mixed which can be dependant on the ambient temperature.

Liquid Coating Application

Brush, Trowel, Roller• Application• Thickness

measurement

Liquid Coating Application

Spray• Application

Equipment• Maintenance

Coating Inspection

Typical inspection kit should include:

Coating Inspection

Inspection Standards

Specification Use

ASTM D4285 Verify Compressed Air Cleanliness

SSPC Vis 1-89 Visual Inspection

ISO 8502-3 Dust Contamination

NACE RP0287 Anchor ProfileNACE RP490 Holiday DetectionSSPC PA2 Film Measurement

Training

Personnel must be properly trained on the use of equipment• NACE and SSPC• Equipment suppliers

Closing RemarksPersonnel must have a good understanding of the job requirements.

• Specifications have outlined particular surface preparation, heat, and film thickness requirements for a reason. The modification of any one of these has the potential to affect the system as a whole.

• We must have a good understanding of what is within specification and what is outside of specification. In the event that we find ourselves outside of a specification, the process must stop, and the cause corrected.

Specifications are guidelines written from both past experience and engineering research. Efforts are made when writing a specification to accommodate all situations, but this is not 100%. If we find ourselves not being able to work to a particular requirement, a flag needs to be raised and the proper persons notified for two reasons:• So that a deviation request can be approved.• So other persons working to the specification

can be notified and be given the same instructions.

Range of Conditions

Questions?

Presented By:Neil HruzekQuality ManagerCommercial Coating Services Intl, Ltd

Preparation Assisted By:Bert MunozSr. Manager QHSEThe Bayou Companies, LLC.

CCSI Management Team