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October 12 - October 16, 2020

If a paint data sheet notes a required primer thickness of 125 microns, but the project specification calls for 50 microns, how is this resolved?


Selected Answers

From Chris Lucy of chemquest technology institute on October 13, 2020:
Stop and realize this was a cluster from the beginning. Regroup and start over.

From Mark Malloy of Bechtel on October 13, 2020:
As an inspector or applicator you are bound by the specification requirements, it is likely the specifier is aware of the discrepancy and has a reason for making the change. However, you also have a duty to ensure the application is right the first time so you need to "raise your hand" and identify the the discrepancy requesting clarification. If the application fails you will likely get away with the defense "I followed the specification" but you will still look bad for blindly following requirements that created a problem, always ask for clarification.

From wan mohamad nor wan rahmanVV of ANTAP SEMENANJUNG SDN. BHD. on October 13, 2020:
It is best to refer to the Paint manufacturer whether project specification can supercede the Technical data. At the end off the day it is important who bore the responsibility if any defect in paint application occurs.

From Neil Pittman of Lake Superior Consulting on October 12, 2020:
The official NACE CIP I answer is to always follow the specification. This is important. However, when a difference between the spec and the manufacturer's literature is noticed, it is best practice to "raise your hand" and contact the owner about how to proceed.

From Jaime Marcos of Profesional independiente on October 12, 2020:
Changing to another paint of the same type but which allows the film layer to close at the specified thickness (50µ), reaching the remaining thickness (75µ) with the intermediate layer compatible with the primer and with the rest of the layers of the paint system. Another solution would be to apply the primer at 125µ, and discounting the excess of microns (75) of the intermediate layer. In both cases, paintings from the same Manufacturer, and prior approval of the project management. What does not seem reasonable is to change the Project Specification since there are many primers on the market that apply at 50µ.

From Mike Rutherford of Conspectus (QLD) Pty Ltd on October 12, 2020:
The paint data sheet is not a specification - although it is often presented as such. The paint manufacturer needs to provide either a written recommendation for specification revision or approval of the specified thickness.

From Jaime Marcos of Profesional independiente on October 12, 2020:
Changing to another paint of the same type but which allows the film layer to close at the specified thickness (50µ), reaching the remaining thickness (75µ) with the intermediate layer compatible with the primer and with the rest of the layers of the paint system. Another solution would be to apply the primer at 125µ, and discounting the excess of microns (75) of the intermediate layer. What does not seem reasonable is to change the Project Specification since there are many primers on the market that apply at 50µ.

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Tagged categories: Asia Pacific; EMEA (Europe, Middle East and Africa); Latin America; North America; Program/Project Management; Specification


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