PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Chemical & Petrochemical Plant Coating Systems

Problem Solving Forum

| More

January 20 - January 24, 2014

Is it practical to use black light to check for dirt or other foreign matter during surface preparation inspection?



More items for Quality Control


Selected Answers

From Larry Pitre of CBI on January 27, 2014:
In addition to my previous response, ASTM A-380 Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems contains specific details on use of black light for surface inspection:  7.3.2 "Black Light Inspection is a test suitable for the detection of certain oil films and other transparent films that are not detectable under white light. In an area that is blacked out to white light, inspect all visible accessible surfaces with the aid of a new, flood-type, ultraviolet lamp." However, ASTM A-380 also indicates that "The test will not detect straight-chain hydrocarbons such as mineral oils." Use of Black Light for inspection of surface preparation is a useful tool and can be a required step for certain industries.

From Larry Pitre of CBI on January 27, 2014:
Yes, black light is an improved means of detecting invisible contamination on apparently clean surfaces. It is a quick, cheap, effective, and easy method to improve and maintain cleanliness prior to coating products. UV light provides an instant visual check of surface cleanliness; allows for monitoring the effectiveness of cleaning procedures and chemicals; identifies problem areas not cleaned properly, which can then be re-cleaned to the required standard ensuring dirt and chemicals are removed; and trains new and existing staff on how to clean to higher standards.

From M. Halliwell of Thurber Engineering Ltd. on January 24, 2014:
I don’t know that it is a matter of being blind, David, but rather a question of contrast. You can see lint on your clothes under regular light, but it stands out considerably more under blacklight. Perhaps that’s what sparked the question?

From david cuthbertson of savcor on January 22, 2014:
What...Are you blind? Think about why you would use a different light spectrum...Would it be for non-visible contaminants?

Please sign in to submit your answer this question    

Tagged categories: Inspection; Surface preparation


Current PSF Question | Submit a PSF Question | Full PSF Archive

KTA-Tator, Inc. - Corporate Office
KTA-Tator EH&S Services

• Ambient & Worker Exposure Air Monitoring
• Safety & Health Program Development
• Lead Paint Assessments
& Specifications
• Health Hazard & Jobsite Safety Assessments
Call 1-800-245-6379


DeFelsko Corporation
PosiTector Dew Point Meter

Measures and records
environmental conditions
during surface prep and
painting. 4 Models
Available – Standard
or Advanced features,
Built-in or Separate probe.


JPCL Europe
Don’t miss an issue!

JPCL EUROPE offers essential news and knowledge for protective and marine coatings professionals in Europe, the Middle East and Africa. Subscribe now: www.jpcleurope.com


Fischer Technology Inc.
MP0R with rotating display screen

View your coating thickness readings from any angle with rotating display screen. New graphic display with easy menu navigation. Click for Video
Call 800-243-8417


Abrasives Inc.
One Call Orders it All!

Life is good when it’s simple. We distribute Clemco blast equipment, nozzles & parts alongside our proven blast media. Make your call: Abrasives Inc. 800-584-7524


CS Unitec
Surface Prep & Material Removal

CS Unitec’s Floor Planers remove coatings & corrosion from concrete & metal surfaces. Produce keyed profiles for waterproofing applications. info@csunitec.com


Elcometer, Inc.
New Elcometer 456 Coating Thickness Gauge

Best In Class Just Got Better. Technologically Intelligent And Robust. Marvelous Design And Durability. An Earth-Shattering Revolution In Coating Inspection.

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker JPCL Europe

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com