5__Attachment_4_-_Coating_Application_and_Removal_Ops_-_Safe_Work_Practice_-_Ver_2.13.pdf

SAFE WORK PRACTICE

AIRSTA Coating Application & Removal Operations

1.0 Introduction

Scope This Safe Work Practice (SWP) provides guidance for risk management and exposure control of hazardous substances used during aircraft coating and removal operations at Coast Guard Air Stations (AIRSTAs). This is only an administrative control and must be accompanied by effective engineering controls designed to reduce and maintain airborne concentrations of CrVI to the lowest concentrations possible.

Reference(s) a) OPNAV 5100.19E – VOL. I SOH and Major Hazard-specific Programs

b) COMDTINST 5100.47 – Safety and Environmental Health Manual

c) 29 CFR 1910.1026 – OSHA Toxic and Hazardous Substances: Chromium (VI)

d) OSHA Safety and Health Topics: Hexavalent Chromium

e) COMDTINST 6260.30 (series) – Polyurethane Exposure Control Manual

f) COMDTINST M6260.2D- Technical Guide: Practices for Respiratory Protection

g) USAF TO 1-1-8 – Application and Removal of Organic Coatings

h) USAF IERA – Aircraft Corrosion Control: Chromate Exposure Assessment/Reduction

i) USAF Institute for Environment, Safety & Occupational Health Risk Analysis, 2000.

Introduction This SWP was developed as an interim measure to manage exposure risks associated with aircraft painting and paint removal operations, especially to CrVI dust. It should be utilized in conjunction with effective engineering controls, which are required by references (a), (b), and (c) in the presence of an identified hazard.

Health Effects According to reference (d), exposure to CrVI may cause the following health effects:

• Lung, nasal, and sinus cancer in workers who breathe airborne CrVI for a prolonged period of time.

• Irritation or damage to the nose, throat, and lung (respiratory tract) if hexavalent chromium is breathed at high levels.

• Irritation, damage, and sensitization of the skin and eyes including allergic dermatitis, occupational asthma, skin ulcerations, and nasal septum perforation when hexavalent chromium contacts these organs in high concentrations or for a prolonged time period.

Exposure Risks

CrVI may be found in certain metal alloys, paints, and masonry cements. Within the CG, most CrVI exposure results from use of chromium-containing primers and paints, conversion coatings, paints, and welding stainless steel and other chromium containing alloys. Most primer and conversion coatings applied to CG airframes contain metallic chromate compounds intended to enhance corrosion inhibition.

Other important hazards associated with coating application and removal operations include: exposure to volatile organic compounds (VOCs) and isocyanate-containing coatings; fire and life safety hazards; and slip, trip and fall hazards. Adherence to these recommended safe work practices and proper maintenance of engineering controls should provide sufficient protection for personnel against these hazards.

Version 2.13

Exposure Routes

Inhalation Dust, mists, and vapors generated during the spray coating application process are airborne and can enter the breathing zones of unprotected and under protected workers and result in exposures. In addition, paint removal operations including abrasive blasting and sanding (mechanical and manual) of existing coating systems generate dust that contain chromate compounds, which also pose an inhalational exposure risk. Personnel performing these tasks are at the highest risk for exposure and studies have shown that unprotected workers were exposed to concentrations 10 to 100 times the Occupational Exposure Limit1.

In addition, inhalational exposure risks are increased when settled dust containing CrVI is re-suspended during cleaning and maintenance activities such as: when personnel employ improper cleaning methods (i.e. broom sweeping), operate equipment, and/or engage in maintenance operations that might disturb settled dust. This hazard remains until this dust is removed from surfaces using proper cleaning methods (HEPA/wet methods).

The use of the CrVI-containing conversion coatings (i.e. Alodine®) also presents inhalation exposure risks during tasks as vapor can enter the breathing zones of unprotected and under protected workers resulting in chromate exposures. In addition, exposure to VOCs can be expected for unprotected and underprotected workers during paint mixing/spray coating operations and to diisocyanates during the top coating applications.

Ingestion Once CrVI-containing dust settles, it presents an exposure risk through ingestion via hand-to-mouth transfer after contact with a contaminated surface. In addition, CrVI dust may be tracked to other areas on the shoes and clothes of personnel extending exposure risks to traditionally non-CrVI work areas.

Skin Contact CrVI-containing (i.e. Alodine®) and diisocyanate paints/coatings are skin contact hazards and can produce dermatitis and dermal sensitization after contact with exposed skin.

Final Wash

Acid Etch

Conversion Coat

Corrosion Removal

Scuff Sand

Mechanical Abrasion

Blasting

Primer/Interim Painting (primer)

Task Paint MixingChemical Strip Top Coat

CrVI

Dust hand/eye/skin injuries

CrVI

Dust

Hand/eye/skin injuries

CrVI

VOCs hand/eye/skin injuries

CrVI

Diisocyanates

VOCs

CrVI

Dust

VOCs

Hazards

Injuries

Diisocyanates

VOCs

Figure A. Typical coating application and removal processes and the hazards associated with each operation.

1 (USAF Institute for Environment, Safety and Occupational Health Risk Analysis, 2000, p. 34)

CrVI Requirements

Regulated Area According to reference (c), work areas, where airborne concentrations of CrVI are or can reasonably be expected to be in excess of the OSHA Permissible Exposure Limit, are considered Regulated Areas. HSWL SC(se) considers all paint booths and dedicated sanding rooms, where CrVI coatings may be applied or removed, as Regulated Areas. Access/entry into these areas must be limited to properly trained, protected, and command authorized personnel. In addition, each command must ensure that the boundaries of each Regulated Area are clearly distinguished from the rest of the workplace in a manner that adequately alerts employees. This may include the use of warning signs, barricades, etc. Regardless, the methods employed must effectively warn personnel to not enter the area unless authorized and wearing proper PPE. For example, a dedicated sanding room for coating removal and a paint booth for applying CrVI coatings are both considered Regulated Areas. Therefore, each area must be properly demarcated to alert personnel to the hazard and entry requirements.

Temporary Regulated Area Temporary Regulated Areas are work areas, in which work is being conducted outside of normal engineering controls. HSWL SC(se) considers all areas, where CrVI-containing coatings are applied or removed outside of paint booths and dedicated sanding rooms, to be Temporary Regulated Areas. The requirements listed in the Regulated Area discussion above also apply to Temporary Regulated Areas. For example, sanding the airframe on the hanger deck or outside of a dedicated sanding room would constitute designation of the area as a Temporary Regulated Area. This would require warning signs and barricades erected around the work area to distinguish it as a Temporary Regulated Area.

Surface Dust OSHA requires that all surfaces be maintained as free as practicable of accumulations of CrVI dust. This is a performance-oriented requirement that is largely dependent upon having rigorous dust control, housekeeping, and personal hygiene programs. Good housekeeping is one of the most important management practices that can be employed to reduce exposures. A good housekeeping program includes routine maintenance and cleaning to prevent dust from accumulating on surfaces. In addition to maintaining all surfaces as free as practicable of CrVI dust, the methods used to remove settled dust must not increase the exposure risk.

Resuspension of CrVI dust is a potential source of exposure not addressed by typical engineering controls (i.e. ventilation). Therefore, the use of HEPA vacuums and personal protective equipment are necessary to reduce exposure risks during cleaning activities.

2.0 Performance-Based Criteria

Training

All personnel must receive hazard awareness training initially upon assignment and annually thereafter. Personnel required to enter CrVI Regulated or Temporary Regulated Areas must also be trained and knowledgeable on this SWP. Training should be provided by a person with a good understanding of the hazards, controls, and safe work practices, which may include the Safety Officer (XO), Unit Safety Coordinator, or HSWL SC (se) staff.

The training should include:

(a) The hazards and health effects of CrVI;

(b) The likely routes of exposure (i.e. inhalation, ingestion);

(c) Locations and sources of CrVI;

(d) Safe work practices associated with work assignments;

(e) Purpose, proper use and limitations of protective equipment; and

(f) Description of clean-up and PPE donning/doffing procedures.

Personal Hygiene

Personnel should exercise meticulous personal hygiene practices after entering any regulated CrVI area. Washing facilities must be readily accessible and capable of removing CrVI from the skin. Workers must utilize washing facilities each time they exit a regulated area after removing protective clothing and before eating, drinking, smoking, chewing tobacco/gum, applying cosmetics, or using the restroom. Utilize wet cleaning wipes capable of removing CrVI (i.e., Hygenall® HexOff™) to clean equipment and tools each time the equipment is to be removed from a regulated area. This type of wipe is better than a standard wet wipe as the HexOff™ wipe breaks the electromagnetic bond between skin and heavy metals such as CrVI.

Eating and drinking is prohibited in regulated CrVI areas. Therefore, all break areas used for eating, drinking, smoking, etc. must be positioned away from regulated areas. All personnel are required to remove protective clothing and equipment before entering break areas. In addition, all surfaces must be maintained as free as practicable of CrVI dust and the housekeeping methods used to remove settled dust should not increase the risk of exposure for personnel. Therefore, the use of HEPA vacuums and wet methods (i.e. swabbing) are necessary to decontaminate surfaces and reduce dust accumulations.

Prohibited Practices

The following practices are prohibited during cleaning and removal of CrVI dust:

• Use of compressed air;

• Use of a brush or broom without a wetting agent;

• Use of a non-HEPA filtered vacuum;

• Eating, drinking, chewing gum/tobacco, smoking, applying cosmetics/lotions, or actions that may break respirator seal.

Disposal Coordinate with your Hazardous Waste Coordinator or cognizant Environmental

Specialist for proper disposal of CrVI dust contaminated waste (i.e.; contaminated PPE).

Place CrVI dust waste in sealed impermeable containers that have been labeled in accordance with the requirements of OSHA’s Hazard Communication Standard.

Medical Surveillance

Based on recent health risk assessments, variability in airborne concentrations of CrVI dust during corrosion control activities, and an extremely low permissible exposure limit, HSWL SC(se) requires all personnel involved in AIRSTA hexavalent chromium coating application and removal operations to be enrolled in the Occupational Medical Surveillance and Evaluation Program. Additional guidance can be provided by the cognizant HSWL SC (se) Safety and Environmental Health Officer (SEHO).

2.1 Personal Protective Equipment

Introduction When exposure hazards are present, personnel must be provided with and properly use personal protective equipment including respiratory, skin, and eye protection. Personal protective equipment must be prescribed for each specific activity/operation that has the potential to expose personnel to contaminants including: mist, vapors, and dust. For example, simple tasks may only require gloves and eye protection, while other operations likely require much higher levels of protection.

Respiratory Protection

When personnel must enter CrVI Regulated or Temporary Regulated Areas to perform work or to engage in any activity that may resuspend settled dust, full-face respiratory protection shall be worn. This may include Supplied Air Respirator/Hood or an Air- Purifying Respirator (APR) or Powered Air-Purifying Respirator (PAPR) equipped with P100 HEPA-rated filter cartridges (for coating removal) or Organic Vapor and P100 HEPA-rated combination filter cartridges (for coating application). Also, in accordance with reference (e), full-face, type C, continuous flow air-supplied respirator shall also be worn when personnel are engaged in coating application operations using isocyanate-containing products. It is the unit’s responsibility to implement a respiratory protection program in accordance with reference (f), which establishes procedures for the proper selection, use, and maintenance of respirators. Ensure that the Respiratory Protection Coordinator (RPC) and Unit Safety Coordinator are fully involved in the selection and fit-testing of all respirators.

After each use, clean all respirators with wipes capable of removing CrVI (i.e., Hygenall® HexOff™) prior to storing in a clean location. NOTE: The command shall train, fit test and ensure that all personnel have been medically cleared to wear a respirator before allowing personnel to don a respirator.

Skin

Appropriate protective clothing shall be worn to protect bare skin from contact with CrVI dust. Protective clothing shall also eliminate surfaces/fabrics (e.g. work clothing and hair) that will collect CrVI dust. Also, if not integrated into protective clothing, wear shoe covers or smooth rubber boots and disposable gloves when engaged in work and cleaning activities in CrVI regulated areas. All seams between protective clothing ensemble (i.e. cuffs/gloves) shall be adequately sealed (i.e. duct tape) to prevent dust contact with skin and clothing.

Properly don/doff and clean/dispose of CrVI contaminated PPE. Protective clothing should be disposed of properly or laundered before reuse, as appropriate. Onsite laundry facilities or contract laundry services should be provided. Units must inform any person who launders or cleans protective clothing or equipment of the potential presence of CrVI contamination and the hazards associated with exposure. In addition, street clothing and clean protective work clothing must be stored in separate storage facilities/lockers to prevent cross-contamination.

Prohibit laundering of protective work clothing with domestic/household laundry.

Eye

When not required to wear a tight-fitting full-face respirator or supplied air hood, wear eye protection (e.g. glasses, goggles), preferably non-fogging, that meets ANSI Z87.1 standard.

This ANSI approval will be indicated (i.e. stamped) on eye protection.

Hearing

Appropriate hearing protection devices must be worn in accordance with the AIRSTA’s latest sound level survey recommendations and Hearing Conservation Program.

3.0 Safe Work Practices

Safe Work Procedures

The following pages contain safe work practice procedures for five specific coating application and removal activities and were designed to reduce CrVI exposure risks for AIRSTA personnel. These procedures should only be used as directed.

3.1 Coating Removal - Regulated Areas

3.2 Coating Removal - Temporary Regulated Areas

3.3 Coating Application- Regulated Areas

3.4 Coating Application - Temporary Regulated Areas

3.5 Maintenance & Cleaning Activities

3.1 Coating Removal - Regulated Areas

The following work procedures were designed to reduce CrVI dust exposure risks when personnel are engaged in coating removal in a Regulated Area. WARNING: All items potentially contaminated with CrVI dust including: equipment, tools, parts, and supplies must be properly decontaminated prior to removing from the Regulated Area.

Typical Activities: Sanding in a designated sanding room

Safe Work Procedures

Step Action

1. Before coating removal work: Assemble PPE, tools and engineering control equipment as outlined in the Requirements Matrix in Table 1 below.

2. Don PPE

3. Activate downdraft table and dust collection/vacuum tool ventilation and ensure that they are functioning properly.

4. Commence work: Ensure that unauthorized and unprotected personnel do not enter the space while work is being performed.

5. After completion of the work activity: Clean all equipment surfaces using a high-to-low strategy using a HEPA-filtered vacuum and in a manner to minimize disturbance of dust. Dry sweeping and use of compressed air to clean is prohibited.

6. Dispose of cleaning materials in sealed bags/impermeable containers and label as hazardous waste.

7. Proceed to decontamination area: clean tools and equipment using a HEPA-filtered vacuum and/or wet wipes and then set tools aside in a clean area.

8. In the decontamination area, remove PPE as follows: (1) remove protective clothing;

(2) remove and dispose of boots covers if not integrated into protective clothing suit;

(3) remove respirator and eye protection and decontaminate using wet wipes, store properly and dispose of cloths/wipes; (4) and finally remove and dispose of gloves.

Double bag CrVI contaminated cloths/PPE/waste and label for disposal.

9. Personnel must wash their hands and face prior to eating, drinking, chewing gum or using tobacco products and launder work clothes before reuse. NOTE: CrVI dust adheres to footwear and clothing worn in CrVI hazard areas and can be carried to other spaces if not cleaned/laundered properly first

10. Coordinate disposal of contaminated waste with AIRSTA HAZWASTE coordinator.

3.2 Coating Removal – Temporary Regulated Areas

engaged in coating removal in a Temporary Regulated Area. WARNING: All items potentially contaminated with CrVI dust including: equipment, tools, parts, and supplies must be properly decontaminated prior to removing from the Temporary Regulated Area.

Typical Activities: Sanding on the Hanger Deck

Safe Work Procedures

Step Action

1. Demarcate work area to clearly indicate the temporary regulated area and establish a decontamination area (a single point of entrance and exit from area)

2. Before coating removal work: Assemble PPE, tools and engineering control equipment as outlined in the Requirements Matrix in Table 1 below.

3. Activate downdraft table and dust collection/vacuum tool ventilation and ensure that they are functioning properly.

4. Don PPE

5.

Commence work: Ensure that unauthorized and unprotected personnel do not enter the space while work is being performed.

After completion of the work activity: Clean all equipment surfaces using a high-to-low strategy using a HEPA-filtered vacuum and in a manner to minimize disturbance of dust. Dry sweeping and use of compressed air to clean is prohibited.

6. Dispose of cleaning materials in sealed bags/impermeable containers and label as hazardous waste.

7. Proceed to decontamination area: clean tools and equipment using a HEPA-filtered vacuum and/or wet wipes and then set tools aside in a clean area.

8. In the decontamination area, remove PPE as follows: (1) remove protective clothing; (2) remove and dispose of boots covers if not integrated into protective clothing suit; (3) remove respirator and eye protection and decontaminate using wet wipes, store properly and dispose of cloths/wipes; (4) and finally remove and dispose of gloves. Double bag CrVI contaminated cloths/PPE/waste and label for disposal.

9. Personnel must wash their hands and face prior to eating, drinking, chewing gum or using tobacco products and launder work clothes before reuse. NOTE: CrVI dust adheres to footwear and clothing worn in CrVI hazard areas and can be carried to other spaces if not cleaned/laundered properly first

10. Coordinate disposal of contaminated waste with AIRSTA HAZWASTE coordinator.

3.3 Coating Application – Regulated Areas

engaged in coating application in a Regulated Area. WARNING: All items potentially contaminated with CrVI dust including: equipment, tools, parts, and supplies must be properly decontaminated prior to removing from the Regulated Area.

Typical Activities: Painting in a Paint Booth

Safe Work Procedures

Step Action

1. Before coating application work: Assemble PPE, tools and engineering control equipment as outlined in the Requirements Matrix in Table 1 below.

2. Activate paint booth ventilation system and allow air flow to stabilize

3. Ensure the paint booth and breathing air systems are functioning properly:

a) Check filters to ensure proper installation and for overloading

b) Check the differential pressure gauge to ensure the booth is operating under slight negative pressure.

c) Ensure the breathing air system intake area is free of any potential contaminants

d) Check breathing air system contaminant detectors and alarms to ensure that they are operable and not silenced.

e) Check breathing air hose for damage.

4. Don PPE

5. Commence work: The painter should remain in an upstream position while applying coatings. The painter should never position themselves between the part being painted and the paint booth exhaust. NOTE: Using a rotating table/Lazy Susan or repositioning the part is a good option to avoid spraying into the wind.

6. After completion of the work activity: Continue to run the ventilation system and clean all equipment surfaces using a high-to-low strategy. Use of compressed air to blow off surfaces is permitted in the paint booth as long as the ventilation remains is in operation. Follow up by cleaning surfaces with a HEPA-filtered vacuum and in a manner to minimize disturbance of dust.

7. Dispose of cleaning materials in sealed bags/impermeable containers and label as hazardous waste.

8. Proceed to decontamination area: clean tools and equipment using a HEPA-filtered vacuum and/or wet wipes and then set tools aside in a clean area.

9. In the decontamination area, remove PPE as follows: (1) remove protective clothing; (2) remove and dispose of boots covers if not integrated into protective clothing suit; (3) remove respirator and eye protection and decontaminate using wet wipes, store properly and dispose of cloths/wipes; (4) and finally remove and dispose of gloves. Double bag CrVI contaminated cloths/PPE/waste and label for disposal.

10. Personnel must wash their hands and face prior to eating, drinking, chewing gum or using tobacco products and launder work clothes before reuse. NOTE: CrVI dust adheres to footwear and clothing worn in CrVI hazard areas and can be carried to other spaces if not cleaned/laundered properly first

11. Coordinate disposal of waste with AIRSTA HAZWASTE coordinator.

3.4 Coating Application – Temporary Regulated Areas

engaged in coating application in a Temporary Regulated Area. WARNING: All items potentially contaminated with CrVI dust including: equipment, tools, parts, and supplies must be properly decontaminated prior to removing from the Temporary Regulated Area.

Typical Activities: Painting on hangar deck.

Safe Work Procedures

Step Action

1. Demarcate work area to clearly indicate the temporary regulated area and establish a decontamination area (a single point of entrance and exit from area).

2. Activate local exhaust ventilation system and allow air flow to stabilize

3. If s u ing breathing air system, ensure proper function:

a) Ensure the breathing air system intake area is free of any potential contaminants.

ant detectors and alarms to ensure d.

b) Check breathing air system contamin that they are operable and not silence

c) Check breathing air hose for damage.

4. Before coating application work: Assemble PPE, tools and engineering control equipment as outlined in the Requirements Matrix in Table 1 below.

5. Don PPE

6. Commence work: Painting should be conducted in a manner that will ensure maximum contaminant collection by the local exhaust ventilation system. The painter should never position themselves between the part being painted and the local exhaust ventilation capture point.

7. After completion of the work activity: Continue to run the local exhaust ventilation system and clean all equipment surfaces with a HEPA-filtered vacuum and in a manner to minimize disturbance of dust and using a high-to-low strategy all the way down to and including the deck in the work area. Use of compressed air to blow off surfaces is prohibited.

8. Dispose of cleaning materials in sealed bags/impermeable containers and label as hazardous waste.

9. In the decontamination area, remove PPE as follows: (1) remove protective clothing; (2) remove and dispose of boots covers if not integrated into protective clothing suit; (3) remove respirator and eye protection and decontaminate using wet wipes, store properly and dispose of cloths/wipes; (4) and finally remove and dispose of gloves. Double bag CrVI contaminated cloths/PPE/waste and label for disposal.

10. Personnel must wash their hands and face prior to eating, drinking, chewing gum or using tobacco products and launder work clothes before reuse. NOTE: CrVI dust adheres to footwear and clothing worn in CrVI hazard areas and can be carried to other spaces if not cleaned/laundered properly first

11. Coordinate disposal of waste with AIRSTA HAZWASTE coordinator.

3.5 Cleaning & Maintenance Activities – Task Specific

engaged in cleaning and maintenance activities. WARNING: All items potentially contaminated with CrVI dust including: equipment, tools, parts, and supplies must be properly decontaminated prior to removing from the Regulated and Temporary Regulated Areas.

Typical Activities: Changing filters, cleaning surfaces

Safe Work Procedures

Step Action

1. Demarcate work area to clearly indicate the temporary regulated area and establish a decontamination area (a single point of entrance and exit from area).

2. Before work: Assemble PPE, tools and engineering control equipment as outlined in the Requirements Matrix in Table 1 below.

3. Assemble necessary equipment to perform operation including: replacement filters, impermeable bags for contaminated waste, HEPA-filtered vacuum for clean up, and portable local exhaust ventilation system, as needed.

4. Commence work: maintenance work and filter changes should be conducted in a manner to minimize dust release.

6. After completion of the work activity: Maintain ventilation systems (downdraft table, paint booth, or portable unit) in operation. Clean all equipment surfaces with a HEPA-filtered vacuum using a high-to-low strategy and finish by decontaminating the deck in the work area. Use of compressed air to blow off surfaces is prohibited.

7. Dispose of cleaning materials in sealed bags/impermeable containers and label as hazardous waste.

8. In the decontamination area, remove PPE as follows: (1) remove protective clothing; (2) remove and dispose of boots covers if not integrated into protective clothing suit; (3) remove respirator and eye protection and decontaminate using wet wipes, store properly and dispose of cloths/wipes; (4) and finally remove and dispose of gloves. Double bag CrVI contaminated cloths/PPE/waste and label for disposal.

9. Personnel must wash their hands and face prior to eating, drinking, chewing gum or using tobacco products and launder work clothes before reuse. NOTE:

CrVI dust adheres to footwear and clothing worn in CrVI hazard areas and can be carried to other spaces if not cleaned/laundered properly first

10. Coordinate disposal of waste with AIRSTA HAZWASTE coordinator. NOTE:

OSHA requires that filters used in flammable spray operations be relocated to a safe location away from the paint booth after removal to reduce fire hazards.

SAFE WORK PRACTICE

Hexavalent Chromium (CrVI) Coating Application & Removal

Table 1. Minimum Controls for Coating Removal and Application Activities2

Coating Removal Coating Application Maintenance & Cleaning

Engineering Controls

1. Downdraft Table

2. HEPA-filtered dust collection tools

3. Local ventilation (hanger deck)

1. Paint Booth

2. Local ventilation (hanger deck)

1. Paint Booth

2. HEPA Vacuum

Pe rs on al

P ro te ct iv e

E qu ip m en t Respiratory

• Powered APR (preferred) or Full-face APR (at a minimum) with P100 HEPA-rated respirator cartridges; or

• Supplied Air Respirator/Hood with Grade D air or better

• Supplied Air Respirator/Hood with Grade D air or better; or

• Powered APR (preferred) or Full-face APR (at a minimum) with Organic Vapor/ P100 HEPA-rated combination respirator cartridges

• Powered APR (preferred) or Full-face APR (at a minimum) with P100 HEPA-rated respirator cartridges; or

• Supplied Air Respirator/Hood with Grade D air or better

Ear Level of hearing protection is based on most recent sound level survey

Level of hearing protection is based on most recent sound level survey

Level of hearing protection is based on most recent sound level survey

Eye Integrated supplied air hood/full-face APR Integrated supplied air hood/full-face APR Integrated supplied air hood/full-face APR

Dermal Hooded Tyvek Suit Hooded Tyvek Suit Hooded Tyvek Suit

Foot

• Steel / Composite Toe Boots

• Boot dust covers (if not integrated into protective clothing/suit)

• Steel / Composite Toe Boots

• Boot dust covers (if not integrated into protective clothing/suit)

• Steel / Composite Toe Boots

• Boot dust covers (if not integrated into protective clothing/suit)

2 (USAF Institute for Environment, Safety and Occupational Health Risk Analysis, 2000, pp. 27-28)