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Safety Protocol 001: Respiratory Protection Program Requirements

Protocol ID: U10M3-SAFE-001

Potential Hazards

Airborne Particulate Hazards

  • Respirable dust (<4 Ξm): Generated by all abrasive blasting operations. Penetrates deep into lungs causing chronic disease.
  • Crystalline silica: If silica sand is used (prohibited in this facility), causes silicosis — irreversible and progressive lung fibrosis.
  • Mixed mineral dusts: Aluminum oxide, garnet, and glass bead fragments cause mixed-dust pneumoconiosis with chronic exposure.
  • Substrate contaminants: Lead (from pre-1978 paint), cadmium, hexavalent chromium, and other toxic metals may become airborne during blasting.
  • Organic dusts: Walnut shell and corn cob media can cause allergic respiratory reactions in sensitized individuals.

Oxygen-Deficient Atmospheres

  • In poorly ventilated spaces, high-volume dust generation can displace oxygen below safe levels (19.5% O₂ minimum).
  • Supplied-air systems in confined spaces require continuous air monitoring.

Respiratory Protection Failure Modes

  • Improper fit (facial hair, wrong size, damaged facepiece)
  • Expired or saturated filters
  • Incorrect filter type for hazard (e.g., particulate filter used for organic vapor)
  • Damaged exhalation or inhalation valves
  • Strap failure during use

Required Precautions & Procedures

Respiratory Protection Program Elements (per OSHA 29 CFR 1910.134)

  1. Written program: Facility must maintain written respiratory protection procedures
  2. Medical evaluation: All respirator users must have medical clearance (OSHA questionnaire or physician evaluation)
  3. Fit testing: Annual quantitative or qualitative fit testing for all tight-fitting respirators
  4. Training: Initial and annual training on hazards, respirator selection, use, and maintenance
  5. Respirator selection: Based on hazard assessment and required protection factor
  6. Inspection and maintenance: Before each use and monthly for stored units
  7. Breathing air quality: For supplied-air systems, Grade D breathing air minimum
  8. Program evaluation: Annual review of program effectiveness

Daily Use Procedures

  1. Inspect respirator before each use (see Activity 001)
  2. Perform positive and negative pressure seal checks every time you don the respirator
  3. If you detect odor, taste, or irritation while wearing the respirator, leave the area immediately and investigate
  4. Replace filters when breathing resistance increases noticeably
  5. Never remove the respirator in the contaminated area — move to clean air first
  6. Clean and store respirator in sealed bag after each use
  7. Do not modify the respirator in any way — no tape, no alterations, no aftermarket parts

Facial Hair Policy

  • Clean-shaven in the respirator seal area is mandatory for tight-fitting respirators
  • Mustaches that do not extend below the lip or interfere with the seal are acceptable
  • If unable to be clean-shaven: use Powered Air Purifying Respirator (PAPR) with loose-fitting hood instead
  • Sideburns must not extend below the ear where the facepiece seals

Emergency Response

Acute Respiratory Exposure

  1. Remove person from contaminated area to fresh air immediately
  2. If not breathing: begin CPR if trained, call 911
  3. If breathing but distressed: position comfortably (usually sitting upright), call 911
  4. Administer supplemental oxygen if available and trained
  5. Document: duration of exposure, type of contaminant, ventilation status, respirator worn (yes/no/type)
  6. Follow up with occupational health for monitoring

Respirator Failure During Use

  1. Hold breath, leave contaminated area immediately
  2. Do not attempt to fix the respirator in the contaminated zone
  3. In clean area: inspect for failure cause (strap break, valve failure, filter breach)
  4. Do not re-enter contaminated area without functioning respiratory protection
  5. Report the failure — investigate root cause to prevent recurrence

Ventilation System Failure During Blasting

  1. Stop blasting immediately (release foot pedal)
  2. Do not open cabinet — allow dust to settle for 2 minutes
  3. Verify respirator is properly sealed before opening cabinet
  4. Ventilate area by opening doors/windows if possible
  5. Do not resume blasting until ventilation is repaired and verified

PPE Requirements

PPE Item Specification When Required
N95 filtering facepiece NIOSH-approved, single-use Minimum for cabinet blasting with functional LEV
P100 half-face elastomeric NIOSH-approved, reusable Extended blasting, filter changes, maintenance
Full-face elastomeric + P100 NIOSH-approved, reusable High-dust situations, unknown contaminants
PAPR with loose-fitting hood NIOSH-approved, HE filters Users who cannot wear tight-fitting respirators
Supplied Air Respirator (SAR) Type CE, Grade D air, with blasting hood Open (non-cabinet) blasting operations
Safety glasses ANSI Z87.1 (under full-face or SAR) Always in blast area
Hearing protection NRR 25+ During all blasting operations

Last Updated: 2026-03-19