April 14 - April 18, 2014
What environmental and safety precautions must be taken when using chemical stripping and water blasting to remove lead-based paint from a commercial building exterior in an urban business district?
Alison Kaelin of ABKaelin, LLC on
April 21, 2014:
I agree with Lydia. However, a couple of other considerations would include the following.
From the point of view of worker safety, if any lead is present, you will need to comply with the OSHA Lead Standard. Also,compliance may be required with the hazard communications standard, depending on the content of the stripper.
From an environmental standpoint, there will be state or local regulations on fugitive emissions, and there may be state or local regulations on lead paint removal, water/abrasive blast cleaning, or dust-producing operations.
There are also prohibitions on allowing lead/strippers to enter storm or sanitary sewers.
You will need to test the waste for hazardous characteristics of corrosivity (stripper) and toxicity (lead) before disposal.
If you are an owner, develop a performance-based specification for the work that addresses preparation and protection of the public and environment. If you are a contractor, make sure you protect your workers and meet regulations for environmental protection.
Lydia Frenzel of Advisory Council on
April 16, 2014:
Please sign in to submit your answer this question
I have seen videos on lead-based paint removal on commercial building exteriors in downtown settings and talked with contractors on this subjects starting around 1994. Depending on the structure configuration, the effective water jetting contractors use hand-held scrubbers (or in case of large flat surfaces, the remote-controlled flat mower configurations) with vacuum hoses attached to bring the water and paint into tanks. There are also tools that clean inside and outside angles to get on the corners and edges that are equipped with vacuum recovery. In this manner, the water/paint doesn't fall to the ground but goes directly into the treatment/clean-up facilities. Hand-held open jets without vacuum could be used, but all water must be collected. Misting would be a problem. Personal protective equipment is still required. Water/debris must be contained. In this video from ca. 1995, a school was being cleaned and remained in session. It takes a lot of planning, and an experienced contractor. If the water/paint is allowed to run down into impermeable berms, the lead ends up as a fine dust when the water dries out. This dust might be respirable. If there is wind, and the open jetting equipment is used, you would need a netting to control the mist. This is a simple answer: SSPC and JPCL have many articles on lead-based paint removal as well as a containment guide, SSPC Guide 6, Guide for Containing Surface Preparation Debris Generated During Paint Removal Operations.
Health and safety;
Paint and coatings removal
Current PSF Question
| Submit a PSF Question
| Full PSF Archive
See the difference immediately Black Magic®
Quality blast abrasive goes farther.
Use Black Magic® The Tough Stuff
coal slag. Cleaner, consistent, less dust.
Order yours today!
Abrasives Inc. 800-584-7524
MORE THAN JUST A SALES PITCH!
Simplicity! Dependability! Safety!
We’ve built these features into every cleverly
engineered inch of our newest models.
It’s all there.
Powerful Protection in a Small Package
Mounts inside blast helmet, alerts operator to dangerous breathing-air condition by audible, visual, and vibratory alarms. Easily calibrated, battery operated.
Fast • Safe • Clean • Silent
The innovative RPR Induction Disbonder, the world’s fastest, safest, cleanest and very cost effective method for removing paint and coatings from steel surfaces.
• Multiple Colors.
• Prevents rust and corrosion.
• Wood Burning stoves,
fire pits, smokers.
• Aerosol, Quarts,
Gallons, 5 Gallons.
Elcometer 106 Pull-Off Adhesion Tester
Portable, easy to operate; Provides numerical value for adhesion; Comes in carrying case - Ideal for site tests; No power supply necessary.
USED EQUIPMENT SPECIALS
• Jet Edge water blast cabinet
1995 Model 36-100, excellent
• Sponge Jet 240L feed unit
with a recycler unit
• Hotsy Trailblazer
• Schmidt pot, 6 ton with
4 outlets, TVII valves, 12V
line with controls, Halo safety
loading feature, 4 factory
welded post for jumbo sack
Contact us: 888-772-3726