BlastPac Explosion Proof Waste Compactor
The explosion proof waste compactor RotoPac BlastPac was designed to operate safely in explosive environments where there is a presence of flammable gases or vapors such as varied non-flammable dust to lessen hazardous environments. This explosion proof waste compactor is ideal for different types of hazardous, explosive environment location as delineated by the NEC (National Electric Code).
Two Models Based on Class Designations:
RotoPac BlastPac – Hazardous Waste Compactor for Explosive Environment
According to the NEC (National Electric Code) there are different types of hazardous locations. The first type of hazard is one which is created by the presence of flammable gases or vapors in the air, such as natural gas or gasoline vapor. When these materials are found in the atmosphere, a potential for explosion exists, which could be ignited if an electrical or other source of ignition is present. This is referred to as a Class I type of hazard. So a Class I hazardous location is one in which flammable gases or vapors may be present in the air in sufficient quantities to be explosive or ignitable.
Some typical locations:
- Petroleum refineries, and gasoline storage and dispensing areas
- Dry cleaning plants where vapors from cleaning fluids can be present
- Spray finishing areas
- Aircraft hangars and fuel servicing areas
- Utility gas plants, and operations involving storage and handling of liquefied petroleum gas or natural gas
- All of these hazardous or explosive environment locations require Class I hazardous equipment
Materials to be compacted may contain these gases or vapors on them:
- Hydrocarbons, fuels, solvents
So rags, paper, articles of clothing, boxes, wrapping etc that have been exposed to these materials would be efficiently and safely compacted in a Class I, Division II designed RotoPac BlastPac™. The Division II designation is most common and it pertains to the gases that are not normally present in an explosive concentration (but may accidently exist).
The RotoPac BlastPac Class I Explosive Environment Compactor adds these hazard -proof critical components to the standard RotoPac.
Class I, Division II additional items:
1. Electric motor
2. Hydraulic panel
3. Electrical panel
4. Switches that are sealed with conduit
5. Aluminum explosion proof push button station without lights
6. Hard pipe conduit
7. This may have to have a special inspection at installed location.
8. Control panels are mounted separately on the outside of the RotoPac BlastPac because of their size
RotoPac BlastPac – Class II
The second type of hazard listed by the NEC is any area made hazardous by the presence of combustible dust. These areas are referred to in the Code as “Class II locations.” Finely pulverized material, suspended in the atmosphere, can cause as powerful an explosion as one occurring at a petroleum refinery.
Some Typical Class II locations:
- Grain elevators
- Flour and feed mills
- Plants that manufacture, use or store magnesium or aluminum powders
- Produces of plastics, medicines and fireworks
- Producers of starch or candies
- Spice-grinding plants, sugar plants and cocoa plants
- Coal preparation plants and other carbon handling or processing areas
Materials to be compacted may contain these dusts:
- Metal dusts (conductive and explosive)
- Carbon Dusts (some are conductive; all are explosive)
- Flour, starch, grain, combustible plastic (not likely to be explosive)
Examples of the materials to be compacted: paper bags (50 pound bag is typical), plastic bags, paper, various types of plastic, masking tape, etc.
For this designation the RotoPac BlastPac Class II adds these components to the standard RotoPac:
Class II, Division II additional items:
1. Explosion Proof Lights, Push buttons and Emergency Stop
2. Hydraulic valves and components in E-Proof NEMA 4 box
3. Explosion proof 5 hp motor
4. Electrical panel enclosed in a NEMA 4 box
5. Explosion cord grips for holding wires
6. Explosion Proof Isolator Switch
NEMA 4 box defined: Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure.