PPE Selection and Lockout/Tagout for Solvent Tasks

Why PPE and LOTO Matter in Dry Cleaning

Dry cleaning and laundry operations involve powerful solvents—including perchloroethylene (perc) and hydrocarbon alternatives—as well as pressurized steam, electrical systems, and rotating machinery. Exposure to these hazards without proper controls can cause chemical burns, respiratory damage, or fatal electrical contact. Two OSHA-required control strategies protect you every shift: Personal Protective Equipment (PPE) and Lockout/Tagout (LOTO). Together they form the last and most immediate line of defense between you and serious injury.

Reading the Safety Data Sheet First

Before selecting any PPE or touching any solvent, locate and read the Safety Data Sheet (SDS) for the chemical you are handling. Section 8 of the SDS lists the employer's recommended exposure controls and the specific PPE required—glove material, eye protection type, and respiratory protection. Section 4 covers first-aid measures, and Section 6 covers spill response. Your PPE choice must match what the SDS specifies for that exact chemical, not a generic guess.

Glove Selection

Glove material is the most commonly mismatched PPE item in solvent work. The key rule: nitrile gloves resist many water-based chemicals and light hydrocarbon solvents but break down quickly in concentrated perc and other chlorinated solvents. For perc transfer, filter cleaning, or spill cleanup involving chlorinated solvents, use neoprene or butyl rubber gloves of sufficient thickness (check the SDS for breakthrough time data). Wearing the wrong glove material is a critical error—a nitrile glove may allow perc to permeate through to the skin within minutes with no visible sign of failure.

Eye and Face Protection

• Chemical splash goggles (indirect-vent) seal around the eye socket and are required whenever there is a splash or mist hazard from liquid solvent.
• Safety glasses do not seal; they are not adequate for solvent transfer or spill cleanup.
• A face shield provides additional protection to the face and neck but must be worn over chemical splash goggles, not instead of them.

Respiratory Protection

For most routine solvent tasks performed in a well-ventilated area within permissible exposure limits, an OSHA-compliant half-face air-purifying respirator (APR) with the cartridge type specified on the SDS is acceptable. APRs do not supply oxygen; they must never be used in oxygen-deficient atmospheres or immediately dangerous to life or health (IDLH) conditions. A self-contained breathing apparatus (SCBA) is required for emergency or IDLH situations. In today's lab the SCBA is for demonstration only; you will not use it for tasks.

Protective Clothing

A Tyvek coverall (Category III minimum for chemical splash) or a solvent-resistant apron protects skin and street clothing from splashes. For spill cleanup, the Tyvek coverall is preferred because it covers more body surface. Check seams and zippers before each use; any tear means the garment must be replaced.

Donning and Doffing Order

Putting PPE on (donning) and taking it off (doffing) in the correct order is just as important as wearing it. A common self-contamination route is removing a contaminated outer glove and then touching your face before removing goggles.

Donning order: coverall → boots/shoe covers → inner gloves (if used) → outer gloves → goggles → face shield (if required) → respirator.

Doffing order (outermost and most contaminated items first): face shield → outer gloves (roll inside out) → coverall (roll downward, contaminated side in) → goggles → respirator → inner gloves → wash hands immediately.

Inspect each item before donning: look for tears, cracked lenses, missing cartridges, and expired shelf dates.

Lockout/Tagout: The Six-Step Sequence

OSHA's Control of Hazardous Energy standard (29 CFR 1910.147) requires LOTO whenever servicing or maintaining equipment where unexpected energization or release of stored energy could cause injury. In a dry cleaning plant, relevant energy forms include electrical (motors, controls), pneumatic/steam (pressurized lines), and gravitational (loaded drum).

The required sequence is:

1. Notify affected employees that the machine is being taken out of service.

2. Shut down the equipment using the normal stopping procedure.

3. Isolate all energy sources—open the electrical disconnect, close steam and solvent valves.

4. Lockout and/or Tagout each isolation point with your personal lock and tag. Each authorized employee places their own lock; no one else may remove it.

5. Release stored energy — bleed pneumatic lines, allow steam pressure to drop to zero, verify the drum is stationary.

6. Verify zero energy state — attempt to start the machine using the normal controls to confirm it will not energize. It must not respond.

Tags alone (tagout) are used only when the equipment cannot physically accept a lock. Tags are a warning, not a physical barrier.

Restoring Equipment

Before removing locks, ensure all tools and materials are cleared, all personnel are safely positioned away from the machine, and affected employees are notified. Remove your personal lock last, then notify workers the equipment is returning to service.

Critical Safety Rules

• Never use a coworker's lock or remove someone else's lock.
• Never bypass LOTO because a task seems quick—most maintenance fatalities involve quick tasks.
• Always treat a machine as energized until you personally verify zero energy state.
• Dispose of solvent-contaminated PPE according to your facility's hazardous-waste procedures; do not place it in regular trash.