5.2 Head, Eye, Face, Foot & Hand Protection Standards

Head, Eye, Face, Foot & Hand Protection Standards

Quick Answer: OSHA's specific PPE standards (29 CFR 1910.133 through 1910.138) incorporate national consensus standards to protect workers from physical and chemical trauma. Under ANSI/ISEA Z87.1, face shields are designated as secondary protection and must always be paired with primary safety glasses or goggles. Under ANSI/ISEA Z89.1, hard hats are classified by impact location (Type I for top impact only, Type II for top and lateral impact) and electrical resistance (Class G at 2,200 V, Class E at 20,000 V, Class C conductive / 0 V). Protective footwear under ASTM F2413 must meet I/75 and C/75 thresholds, while chemical hand protection under 1910.138 is governed by degradation, breakthrough time, and permeation rate.

Every year, thousands of preventable workplace injuries occur due to inadequate, defective, or improperly selected personal protective equipment. OSHA Subpart I establishes specific design, testing, performance, and maintenance requirements for five primary bodily protection zones: eye and face, head, foot and leg, hand and arm, and respiratory/hearing systems.

+-----------------------------------------------------------------------------+
|                   SUMMARY OF OSHA BODY PROTECTION STANDARDS                 |
|                                                                             |
|   +-----------------------+-------------------------+-------------------+   |
|   | PROTECTION ZONE       | OSHA REGULATION         | CONSENSUS STD.    |   |
|   +-----------------------+-------------------------+-------------------+   |
|   | Eye & Face Protection | 29 CFR 1910.133         | ANSI/ISEA Z87.1   |   |
|   | Head Protection       | 29 CFR 1910.135         | ANSI/ISEA Z89.1   |   |
|   | Foot Protection       | 29 CFR 1910.136         | ASTM F2412 / F2413|   |
|   | Hand & Arm Protection | 29 CFR 1910.138         | ANSI/ISEA 105     |   |
|   +-----------------------+-------------------------+-------------------+   |
+-----------------------------------------------------------------------------+

---

1. Eye and Face Protection (29 CFR 1910.133 & ANSI/ISEA Z87.1)

Under 29 CFR 1910.133, employers must ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from flying particles, molten metal, liquid chemicals, acids or caustic liquids, chemical gases or vapors, or potentially injurious light radiation.

Primary vs. Secondary Eye and Face Protection

Understanding the distinction between primary and secondary protectors is essential for compliance and worker survival:

• Safety Glasses (Primary Protection): Designed to protect the eyes from optical radiation and flying impact debris. Must meet ANSI/ISEA Z87.1 impact standards (indicated by the Z87+ marking on lenses and frames). Safety glasses must feature side protection (detachable or integrated side shields) whenever flying object hazards exist.
• Chemical Splash Goggles (Primary Protection): Provide a continuous, tight seal against the user's face surrounding the eyes. Used when working with liquid chemical splash, fine hazardous dusts, or corrosive mists. Goggles should feature indirect venting (hooded baffled vents) to allow airflow while preventing liquid droplets from penetrating directly.
• Face Shields (Secondary Protection): Provide broad coverage for the entire facial area, chin, and neck against heavy liquid splash, sprays, or high-velocity flying grinding fragments.

[!WARNING] Face Shield Is NEVER Standalone Protection: Under ANSI/ISEA Z87.1 and OSHA enforcement directives, a face shield is classified strictly as secondary protection. Because flying particles or splashing liquids can deflect beneath or around the sides of a face shield, workers must always wear primary eye protection (safety glasses or chemical goggles) beneath the face shield.

+-----------------------------------------------------------------------------+
|                   EYE & FACE PROTECTION SELECTION MATRIX                    |
|                                                                             |
|   HAZARD TYPE               | PRIMARY PROTECTOR     | SECONDARY PROTECTOR   |
|   --------------------------+-----------------------+---------------------  |
|   Flying Chips / Particles  | Z87+ Safety Glasses   | Face Shield           |
|   (Machining, chipping)     | with Side Shields     | (for heavy chips)     |
|                             |                       |                       |
|   Corrosive Liquid Splash   | Indirectly Vented     | Full Face Shield      |
|   (Acids, caustics, plating)| Chemical Goggles      | over Goggles          |
|                             |                       |                       |
|   Chemical Gases / Vapors   | Non-Vented Chemical   | Full-Facepiece        |
|   (Severe eye irritants)    | Goggles               | Respirator            |
|                             |                       |                       |
|   Heavy Grinding / Debris   | Z87+ Safety Glasses   | Heavy-Duty Face       |
|   (Abrasive cutting wheels) | or Impact Goggles     | Shield (MANDATORY)    |
+-----------------------------------------------------------------------------+

Optical Radiation and Filter Lens Shade Selection (1910.133(a)(5))

Workers performing hot work or welding must be protected from ultraviolet (UV), infrared (IR), and intense visible glare. Filter lenses are categorized by shade numbers ranging from 2 (lightest) to 14 (darkest):

Prescription Lenses (1910.133(a)(3))

Workers who wear corrective lenses must use eye protection that incorporates the prescription into the optical design (prescription safety glasses with Z87+ stamped frames) or wear safety goggles/over-the-glasses (OTG) protectors over their regular glasses without disturbing the proper positioning of the prescription lenses.

---

2. Head Protection (29 CFR 1910.135 & ANSI/ISEA Z89.1)

Under 29 CFR 1910.135, employers must ensure that employees wear protective helmets (hard hats) when working in areas where there is a potential for injury to the head from falling objects, bumping into low overhead structures, or contact with exposed electrical conductors.

+-----------------------------------------------------------------------------+
|                   ANSI/ISEA Z89.1 HARD HAT CLASSIFICATIONS                  |
|                                                                             |
|   [ IMPACT TYPES - DIRECTION OF FORCE ]                                     |
|   - TYPE I  : Protects against impact from blows to the TOP of the head only|
|   - TYPE II : Protects against impact from blows to the TOP and SIDES       |
|               (lateral, front, and back impact protection)                  |
|                                                                             |
|   [ ELECTRICAL CLASSES - DIELECTRIC RESISTANCE ]                            |
|   - CLASS G (General)    : Tested to 2,200 VOLTS AC (Phase-to-ground)       |
|                            (General construction, manufacturing, trade)     |
|   - CLASS E (Electrical) : Tested to 20,000 VOLTS AC (Phase-to-ground)      |
|                            (High-voltage electrical workers, linemen)       |
|   - CLASS C (Conductive) : ZERO ELECTRICAL PROTECTION (0 Volts)             |
|                            (Ventilated shells, impact-only protection)      |
+-----------------------------------------------------------------------------+

Detailed Technical Differences:

• Type I vs. Type II Hard Hats: Type I helmets are standard general-purpose hard hats designed to dissipate vertical impact energy from dropped hand tools, bolts, or debris falling directly onto the crown. Type II helmets feature an internal high-density expanded polystyrene (EPS) foam liner that absorbs off-center and lateral impact forces from swinging loads, side wall collapses, or slip-and-fall impacts.
• Class G vs. Class E vs. Class C: Class G helmets provide basic dielectric protection up to 2,200 volts. Class E helmets are engineered for utility line workers and electricians, providing high-voltage dielectric protection tested to 20,000 volts. Class C helmets are conductive, provide zero electrical insulation, and are strictly prohibited for any worker exposed to live electrical circuits or wiring.

Inspection, Service Life, and Maintenance Rules

• Suspension System: The internal web suspension maintains a critical 1 to 1.25 inch clearance between the worker's skull and the hard outer shell to absorb impact energy. Suspensions must be replaced at least every 12 months or immediately if cracked, torn, or frayed.
• Outer Shell: Shells must be inspected daily for hairline cracks, gouges, chalking (UV degradation), or loss of flexibility. Shells must generally be replaced every 2 to 5 years per manufacturer guidelines.
• Prohibited Modifications: Employees must never drill holes in a hard hat (destroys structural integrity) and never apply solvent-based paints or unapproved adhesive stickers (solvents degrade the polymer matrix, making the shell brittle and prone to shattering under impact).

---

3. Foot and Leg Protection (29 CFR 1910.136 & ASTM F2413)

Under 29 CFR 1910.136, protective footwear is mandatory in workplaces where employees are exposed to hazards from falling or rolling heavy objects, objects piercing the sole (nails, scrap metal), electrical shock hazards, static electricity buildup, or chemical spills.

+-----------------------------------------------------------------------------+
|                 ASTM F2413 COMPLIANT FOOTWEAR LABEL EXAMPLE                 |
|                                                                             |
|   Line 1: ASTM F2413-18        --> Standard Designation & Revision Year     |
|   Line 2: M / I / 75 / C / 75  --> Gender (M), Impact (75 ft-lbs),         |
|                                    Compression (2,500 lbs)                  |
|   Line 3: Mt / 75 / EH / PR    --> Metatarsal (75 ft-lbs), Electrical       |
|                                    Hazard (18,000 V), Puncture Resistant    |
+-----------------------------------------------------------------------------+

ASTM F2413 Performance Designations and Markings

1. Impact (I/75) & Compression (C/75) Ratings:
   • I/75 (Impact Resistance): Protective toe cap protects toes against an impact energy of 75 foot-pounds (equivalent to a 50-pound weight dropped from a height of 1.5 feet).
   • C/75 (Compression Resistance): Protective toe cap withstands a compressive load of 2,500 pounds without crushing.
2. Metatarsal Protection (Mt/75): Standard safety shoes protect only the toes. In heavy manufacturing, foundry work, stone cutting, and heavy material handling, dropped objects strike the upper bridge of the foot (metatarsal bones). Metatarsal guards provide a protective shield extending from the safety toe up to the ankle, rated for 75 foot-pounds of impact.
3. Electrical Hazard (EH): Footwear engineered with non-conductive, electrical shock-resistant soles and heels capable of withstanding 18,000 volts at 60 Hz for 1 minute in dry conditions with leakage current not exceeding 1.0 mA.
4. Static Dissipative (SD): Footwear designed to safely conduct static electricity from the body to the ground (resistance range: $10^6\text{ to }10^8\text{ ohms}$), preventing electrostatic sparks in flammable or volatile atmospheres (paint booths, grain elevators).
5. Conductive (CD): Discharges static electricity rapidly (resistance $< 500,000\text{ ohms}$) in explosive munitions manufacturing. (Strictly prohibited around live electrical circuits).
6. Puncture Resistant (PR): Incorporates a steel or composite plate midsole capable of resisting a penetration force of at least 270 pounds (1,200 N) from sharp nails or metal shards.

---

4. Hand and Arm Protection (29 CFR 1910.138)

Under 29 CFR 1910.138, employers must select and require employees to use appropriate hand protection when exposed to hazards such as skin absorption of harmful substances, severe cuts or lacerations, severe abrasions, punctures, chemical burns, thermal burns, and harmful temperature extremes.

Chemical Glove Selection Criteria

Selecting chemical protective gloves requires analyzing three distinct physical and chemical performance metrics:

+-----------------------------------------------------------------------------+
|                 THE THREE CHEMICAL GLOVE PERFORMANCE METRICS                |
|                                                                             |
|   1. DEGRADATION    --> Physical deterioration of the glove material upon   |
|                         contact (swelling, softening, cracking, shrinkage)  |
|                                                                             |
|   2. BREAKTHROUGH   --> The elapsed time between initial chemical contact on|
|      TIME               the outside and chemical detection on the inside    |
|                                                                             |
|   3. PERMEATION     --> The molecular diffusion rate at which the chemical  |
|      RATE               travels through the glove polymer matrix            |
+-----------------------------------------------------------------------------+

Glove Polymer Matrix Selection Guide

[!CAUTION] Rotating Machinery Hazard: Workers must never wear gloves when operating rotating machinery—such as drill presses, lathes, milling machines, power roll formers, or unguarded spinning spindles. Glove fabric can become entangled in rotating spindles, drawing the operator's hand and arm into the machine and causing catastrophic amputations or fatal injuries.