CHMM (IHMM) case studies
CHMM · Put your knowledge to work in context.
The Certified Hazardous Materials Manager (CHMM®) is the Institute of Hazardous Materials Management's founding credential - its first recipients were awarded it on May 1, 1984 - and it is held by a community of more than 17,000 professionals. Under federal regulation 40 CFR §312.10, the U.S. The CHMM case studies are 5 cases and about 5,261 words.
1Generator Status After an Inventory Purge
Ridgeline Analytical Services runs a bench chemistry lab with no RCRA permit. Last calendar month the lab generated 1,340 kg of F-listed spent acetonitrile and methanol, 380 kg of D002 corrosive aqueous waste, and 14 kg of discarded unused sodium azide, a P-listed acute hazardous waste, from an inventory purge.
924 words, about 5 min2Ammonia Seal Failure at a Refrigerated Warehouse
Coldpoint Distribution runs a 210,000 square foot refrigerated warehouse served by an anhydrous ammonia system charged with 18,500 lb. At 02:40 a compressor shaft seal failed; the operator isolated the machine at 03:15.
995 words, about 5 min3Opening a Warm Drum of Reclaimed Toluene
At a coatings plant an operator must open a 208-L (55-gal) steel drum of reclaimed toluene that has been stored outdoors through August. The drum is about one-third full, has no integral pump, and has no grounding lug.
1,125 words, about 6 min4PID Reading and Respirator Selection in a Utility Pit
During excavation at a former dry-cleaning and metal-parts site, a photoionization detector in a worker's breathing zone reads 22 ppm as isobutylene inside a 12-ft-deep utility pit. The unit has a 10.6 eV lamp and was calibrated that morning on isobutylene.
1,045 words, about 5 min5Split Transfer Hose, Damaged Berm, and a Storm Drain
Halvorsen Machining occupies a 40,000 square foot parts plant. Bulk oil storage is a 10,000-gal aboveground diesel tank plus two 2,000-gal lube-oil tanks, all inside one concrete berm rated at 9,000 gal; a 55-gal hydraulic-oil drum sits on the loading dock.
1,172 words, about 6 min