Concrete & Silica Dust

Product Overview

Crystalline silica is naturally found in soil, sand, granite, and many other minerals used within the concrete industry. Millions of U.S. workers in high risk jobs such as abrasive blasting, foundry work, stonecutting, rock drilling, quarry work and tunneling are exposed to dangerous levels of silica which can lead to serious health hazards in the form of cancer and respiratory issues, and OSHA’s changes to current regulations will decrease these risks.

Rule went into law on June 23, 2016. Must be in compliance by September 23, 2017.

What Does the Updated Rule Require?

  • Workers’ exposures are limited to a new PEL of 50 micrograms of respirable crystalline silica per cubic meter of air (μg/m3) averaged over an 8-hour day. Action must be taken for any situation where the PEL is above 25 μg/m3.
  • Provisions for measuring how much silica dust workers are exposed to, limiting workers’ access to areas where silica exposures are high, using effective methods for reducing exposures, providing medical exams to workers with high silica exposures, and training for workers about silica hazards and limiting exposure

Compliance (via OSHA’s Small Entity Compliance Guide for the Respirable Crystalline Silica Standard for Construction)

1. Determine if the silica standard applies to your employees.

Could employees be exposed to respirable crystalline silica at or above 25 μg/m3 as an 8-hour TWA under any foreseeable conditions, including the failure of engineering controls, while performing construction activities?

No: No further action is required under the silica standard.
Yes: Choose to comply with the standard using either the:

  • Specified exposure control methods in Table 1, or
  • Alternative methods of compliance

2. Determine what additional requirements you must meet under the standard, based on the compliance
method you are following.

Must the Employer Follow the Requirement?
Requirement If Fully and Properly Implement Table 1 If Following Alternative Exposure Controls
PEL No Yes
Exposure Assessment No
Yes, when exposures are reasonably expected to be above the action level.
Methods of Compliance No Yes
Respiratory Protection Yes, if respirator use is required by Table 1 Yes, if respirator use is required to reduce exposures to the PEL
Housekeeping Yes Yes
Written Exposure Control Plan Yes Yes
Medical Surveillance
Yes, for employees who must wear a respirator under the silica standard for 30 or more days a year.
Yes, for employees who must wear a respirator under the silica standard for 30 or more days a year.
Communication of Hazards Yes Yes
Recordkeeping
Yes, for any employees who are getting medical examinations
Yes, for exposure assessments and for any employees who are getting medical examinations

 

Table 1

This table lists several tasks and gives specific direction to reduce silica exposure, including engineering controls, practices and required safety equipment.

View Table 1

Crushing Machines Dow Drilling Rigs Drivable Saws
Handheld Grinders for Users Other Than Mortar Removal Handheld Grinders for Mortar Cement Handheld Power Saws for Fiber Cement Boards
General Handheld Power Saws Heavy Equipment and Utility Vehicles Heavy Equipment and Utility Vehicles II
Jackhammer and Power Chipping Tools Large Drivable Milling Machines Rig Mounted Core Saws and Drills
Small Drivable Milling Machines Stationary Masonry Saws Vehicle Mounted Drills and Rigs
Walk Behind Saws Walk-Behind Milling Machines and Floor Grinders Handheld and Stand-Mounted Drills

 

Ruwac’s Compliance:

Ruwac knows how important safety and cleaning up the job site is, especially for those working with fine, irritating concrete dust and powders as well as hazardous silica dust. All of our vacuum cleaners recommended for concrete and silica dust removal comply with the latest OSHA standards for worker safety while featuring industry-leading filtration innovative technology that can be custom tailored to suit your individual needs. These industrial vacuums are ideal for concrete grinders, scarifiers, crack saws and blast machines, just to name a few. Ruwac takes pride in its ability to provide the concrete industry with dustless vacuums systems that can be depended on to last while keeping workers safe.

  • Dust collectors feature CFMs recommended by the manufacturer for the specific equipment being operated
  • Recommended vacuums meet 25 CFM / inch of blade per OSHA’s requirement for handheld grinders
  • Industry-leading MicroClean filter is compliant to OSHA’s silica dust standards at 99.9% efficient at 0.5 microns, preventing filter clogs and cutting down on costly filter replacements
  • Equipped with a manual filter cleaning mechanism that easily keep the filters clean in between processes
  • Foot-actuated dustpans or direct bagging collection systems allow for easy, dust-free emptying while reducing user exposure to contaminants
  • Optional HEPA Maxx is MERV 18 at 99.997% at 0.3 microns and compliant to OSHA’s silica dust standards
  • Optional HEPA 2.0 is MERV 17 at 99.97% @ 0.3 microns and compliant to OSHA’s silica dust standards

Intermittent Duty | Single Phase

Portable Ideal Application Direct Bagger
WNS1000
 

  • 4” handheld grinders with 10’ of host
  • Dustless needle guns and peening prep tools
WNS1000 Direct Bagger Industrial Vacuum
WNS1000 Direct Bagger
WNS2220 Portable Industrial Vacuum
WNS2220
 

  • 5″ – 8” handheld grinders with 25′ of hose
  • Floor grinders, 16” & 20”
  • Tuck pointing with 1 user and 50′ of hose
WNS2220 Direct Bagger Industrial Vacuum
WNS2220 Direct Bagger
WS2220 Portable Industrial Vacuum
WS2220
 

  • 7” grinders with 25′ of hose
  • Floor grinders, 16” & 20”
  • Tuck pointing with 2 users and 50′ of hose
WS2220 Direct Bagger Industrial Vacuum
WS2220 Direct Bagger
WS2320 Red Raider Portable Industrial Vacuum
WS2320
 

  • Multiple operators
  • 2”–7” grinders w/ 3” x 25’ hoses
  • Crack saws
  • Large floor grinders
WS2320 Direct Bagger Industrial Vacuum
WS2320 Direct Bagger
220-S DuoVac Portable Industrial Vacuum
220-S DuoVac
 

  • Multiple operators
  • Great for grinders up to 44” and four-7” hand grinders

 

Continuous Duty | Three Phase

Product Ideal Application
DS1400-CON
 

  • Continuous extraction of fine dust
  • Point of source extraction
  • General shop maintenance
DS2720-CON Portable Industrial Vacuum
DS2720-CON
 

  • Continuous extraction of fine dust
  • Removing fine particles from environment
  • Multiple operators
  • General maintenance for large areas

 

Alternative Power | Continuous Duty

Product Ideal Application
GV5 Gas-Powered Portable Industrial Vacuum
GV5
 

  • Use in environments without electricity
  • Multiple operators
  • Vacuum assist tools
  • Remote location application
GV10 Gas-Powered Portable Industrial Vacuum
GV10
 

  • Use in environments without electricity
  • Multiple operators
  • Vacuum assist tools
  • Remote location applications
GV15
GV15
 

  • Use in environments without electricity
  • Multiple operators
  • Vacuum assist tools
  • Remote location applications
PV10
 

  • Use in environments without electricity
  • Multiple operators
  • Vacuum assist tools
  • Remote location applications

 

Continuous Duty | Wet / Slurry

Product Ideal Application
WSP3000 Portable Industrial Vacuum
WSP3000
 

  • Collecting liquid containing concrete chips
  • Separating concrete chips down to 100 microns
  • Filtering liquid for reuse
  • Pumping wet material to an alternate location
SPS250 Portable Industrial Vacuum
SPS250
 

  • Collecting liquid containing concrete chips
  • Separating concrete chips down to 100 microns
  • Filtering liquid for reuse
  • Pumping wet material to an alternate location