| Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise


Download our free Wastewater Treatment Coating Systems eResource Book

Paint and Coatings Industry News

Main News Page

OSHA Offers Silica Exposure Guide

Monday, June 1, 2009

Comment | More

The Occupational Safety and Health Administration has just released Controlling Silica Exposures in Construction (OSHA 3362-04), a new publication designed to help employees minimize exposure to respirable dust containing crystalline silica. Crystalline silica is known to cause silicosis, a serious lung disease, and several groups have asked OSHA to ban its use in abrasive blasting.

The 72-page booklet addresses the control of employee exposures to dust containing crystalline silica;

The book is divided into nine sections that cover different construction operations. Eight are for specific equipment or operations: Stationary Masonry Saws, Handheld Masonry Saws, Hand-Operated Grinders, Tuckpointing/Mortar Removal, Jackhammers, Rotary Hammers and Similar Tools, Vehicle-Mounted Rock Drilling Rigs, and Drywall Finishing. The other section addresses general housekeeping operations and dust control through the use of dust suppressants.

The sections include case studies, reference lists and technical notes. They offer information, advice and recommendations on using wet methods, vacuum dust collection (VDC) systems, and work practices to control dust emissions from construction operations.

Quartz is the most common form of crystalline silica. It is present in many materials in the construction industry, such as brick and mortar, concrete, slate, dimensional stone (granite, sandstone), stone aggregate, tile, and sand used for blasting. Other construction materials that contain crystalline silica are asphalt filler, roofing granules, plastic composites, soils, and to a lesser extent, some wallboard joint compounds, paint, plaster, caulking and putty.

OSHA notes that some organizations have recommended lower levels than that agency requires. For example, the National Institute for Occupational Safety and Health (NIOSH) recommends that respirable crystalline silica exposures be limited to 0.05 mg/m3 as a time-weighted average for up to 10 hours (NIOSH, 2002). The American Conference of Government Industrial Hygienists (ACGIH) recommends that respirable crystalline silica exposures be limited to 0.025 as an 8-hour time-weighted average (ACGIH, 2008).

OSHA is reviewing the construction and general industry PELs for silica in its ongoing silica rulemaking.

Meanwhile, the agency encourages employers to conduct periodic exposure monitoring to confirm that engineering and work practice controls are effective and that appropriate respiratory protection is being used where necessary.

For additional information about controlling silica exposures in construction, please see OSHA’s website at

On April 28, the International Safety Equipment Association and the Risk and Insurance Management Society petitioned OSHA to prohibit the use of silica in abrasive blasting. The petition asked for an expedited rulemaking to amend regulations and make the use of silica sand in abrasive blasting a prohibited practice.

To download the book, visit and see New for Workers under In Focus on the home page.


Tagged categories: Health and safety; OSHA; OSHA; Silica; Workers

Comment Join the Conversation:

Sign in to our community to add your comments.

SSPC: The Society for Protective Coatings

Join SSPC and Enhance
Your Career !

Blastox/The TDJ Group, Inc.
Blastox - One Step
Lead Abatement

Don't waste $$ on added labor steps with other methods. Don't mix, meter or apply at the job-site. Avoid strict hazardous waste rules.
Let your painters paint!

Sidewinder/Persyst Enterprises, Inc.
The Sidewinder Model M2 Solvent Recycler

Combat the rising cost of gunwash, thinners, acetone & more while drastically reducing waste disposal coat.

RPB Respiratory

With RPB Safety’s new Nova 3 Cassette Lens System which has been specifically designed to save you time and money! See the benefits for yourself now!

CS Unitec
Work Cleaner and Safer

CS Unitec’s Vibro-Lo low-vibration scalers offer high performance for greater productivity & improved operator comfort. Optional dust shroud.

Clemco Industries Corp.
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.

US Minerals
US Minerals -
Black Magnum

With nationwide production and distribution capabilities, U.S. Minerals supplies a complete range of coal slag and other abrasives to meet all of your blasting needs.

Novatek Corporation
Dustless Coatings Removal

Strip it, clean it, and profile it,
all dust free! High production
rates and Blast like finishes.
Comply with new lead

KTA-Tator, Inc. - Corporate Office

• Coating failure analysis
• Independent
  comparative testing
• Accelerated
  weathering testing
• Toxic metals testing
• A2LA Accredited

U.S. Zinc
Logistics. Rely On U.S.

Whether via rail, truck, sea or air, you can trust our logistics services to deliver the product you need on time, every time.

Technology Publishing

The Technology Publishing Network

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

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   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us

© Copyright 2000-2015, 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