Ozone Safety INTERNAL USE ONLY 2009 1 FOR

Ozone Safety INTERNAL USE ONLY, © 2009 1 | FOR © 2010

Extreme Finishing - Technical Updates Agenda • Ozone Overview • Ozone Properties • Why use it • Process Review • Risk Review • SES Requirements NEW CAPABILITIES 2 | © 2010

Ozone Wash 3 | © 2010

Ozone • Triatomic state of Oxygen (O 3) • Distinct fragrance at less than 2 ppm • PEL (0. 1 ppm) • IDLH (5 ppm) • Strong Oxidizer • Highly reactive 4 | © 2010

Why use Ozone as a finishing agent? 1. With oxidizing power about 3000 times more efficient than other chemical bleaching agents. 2. Used to oxidize, clean or destroy organic materials without damaging the garment. 5 | © 2010

Why use Ozone as a finishing agent? 3. Process is environmentally friendly – – – 6 | © 2010 Can wash in cold water solution After ozone oxidizes or disinfects, it decomposes into oxygen Although ozone is the strongest oxidizing agent commercially available, it is relatively safe to handle. The primary reason is that it cannot be stored and, therefore must be generated and used on-site. Ozone in its gaseous phase is a proven deodorizer for a variety of odorous materials. Applying ozone (liquid or gaseous) does not add other chemicals to the wash process.

Ozone Laundry Process Ozone Generator Process Controls, control board, monitor and Alarm Pipes, connectors, clamps – corrosion resistent, stainless steel, rigid -not flexible Extractor/Washer – sealed, operates under negative Pressure, inter-locked doors Ozone Destruct Unit (Heat, Catalyst, Steam) 7 | © 2010

Ozone Laundry Process Leaks, no auto shut Off, home made machines Ozone Destruct Unit: Is enough time allowed to destroy all ozone in low pressure systems, catalyst is routinely replaced 8 | © 2010 No control boards to control amount of Ozone generated, No leak detection or alarm Pipes, clamps, monitoring probes not of proper material, could corrode causing leaks Extractor/Washer: low pressure ozone systems do not have inter-locked doors, no monitor to detect zero ozone state. Some extractors are vacuum sealed, some are not. Concentration determines Wash time!! (Factories will Push the limit of the ozone Generator and use highest concentration)

PPE for Ozone Protection • Self-Contained Breathing Apparatus (SCBA), or other air-supplied respirator, is recommended. Respiratory protection may be required at concentrations of 0. 2 ppm. • Air-purifying respiratory protection is available to provide short-term protection against low concentrations of ozone of <0. 1 ppm. [i] However, air-purifying devices do not have NIOSH approval to protect against ozone, [i] 3 M™ Particulate Filter 2078, P 95 with Nuisance Level Organic Vapor/Acid Gas Relief. Not NIOSH approved for ozone. 9 | © 2010

SES Requirements • (IA) Ozone-generating equipment must be separated from the rest of the factory, either by enclosing it in its own room or by using a physical barrier. Plexi-Glass enclosure Stainless steel enclosure (Ozone Generator inside) 10 | © 2010

SES Requirements • (IA) Factories must provide ventilation for the area where the ozone-generating equipment is located that meets the following requirements: a) the ventilation system is separate (from the rest of the factory); b) it is maintained so that air pressure is slightly negative relative to the remainder of the factory; and c) outgoing (exhaust) air vents are located away from the incoming (intake) air vents. Negative pressure must be maintained during the purging process. • (IA) In-line ozone probes (monitors) must be installed in the finishing equipment in order to monitor the ozone concentration in the system. 11 | © 2010 Ozone Probes attached to monitor

SES Requirements In line Ozone Probes attached to monitor 12 | © 2010

SES Requirements • (IA)Washer/Extractor/Tumbler doors must be interlocked and must not be capable of opening until ozone has been purged from the system. • (IA) Excess or exhaust ozone must be ventilated through an ozone destruct unit. The ozone-destruct unit may use eithermal/steam or catalytic conversion technology and must destroy ozone, thereby exhausting carbon dioxide and oxygen to the outside air. – 13 | © 2010 If the ozone destruct unit uses catalytic conversion technology, the factory must have a written schedule to replace the catalyst on a regular basis.

Ozone Destruct Units Uses activated carbon as a catalyst must be changed out on a regular basis. Check Purchase Orders and maintenance Logs 14 | © 2010 Uses Heat – Check Points – No flammables Stored nearby, unit is enclosed, warning labels applied

SES Requirements • • 15 | © 2010 (IA) The area in which the ozonegenerating equipment is located must be equipped with an ozone monitor and an audible or visual alarm that will alert workers in the area if ozone levels exceed 0. 1 ppm. (IA) If the ozone generator is in a separate room, the exit door(s) from this room shall be equipped with “crash bars” to allow for rapid exit from the room, in the event the alarm is triggered.

SES Requirements • 16 | © 2010 (IA) Equipment associated with the ozone generator (such as pipes, pipe connectors, and clamps) must be made of corrosion-resistant materials and must be strong enough to withstand the pressure generated by the ozone finish process.

Pipes, connectors, clamps – Strong and corrosion proof Stainless Steel connectors & Clamp Semi-Flex PVC Pipe 17 | © 2010

Pipes, connectors, clamps – Strong and corrosion proof Stainless Steel connectors & Pipe Flex Pipe – Rigid connection prefered to reduce potential for leaks 18 | © 2010

SES Requirements • • • 19 | © 2010 (IA) Flammable or combustible materials must not be stored in the same area as the ozone generator. (CI) Factors must train employees on the hazards of ozone gas and on the need to stay out of (or evacuate) the ozonegenerator area if the alarm has been triggered. (CI) Factories must have written standard operating procedures for safely operating the ozone-generating equipment and must make these available to SES Assessors for review.

Questions ? 20 | © 2010