basement - answer☑️✔️..story partly below grade plane; 1/2 clear height
boiling point - answer☑️✔️..temp when liq vap pressure = 14.7 ATP/760 mmhg; unknown BP -
20% evap point of distillation performed related to ASTM D 86
chemical - answer☑️✔️..element/compound/mixture of both
chemical name - answer☑️✔️..iupac - international union of pure and applied chemistry
close container - answer☑️✔️..container sealed to prevent liquid/vapor escaping or dust
combustible liquid - answer☑️✔️..liquid with closed-cup flash point at or above 100F
container - answer☑️✔️..solids/liquids - vessel 60 gallons or less for storage/transportation;
compressed gas - container should been designed for 1 ATM at 68F̊; pipes and piping systems
with solid or liquid hazardous materials/compressed gases will not be in containers
corrosive materials - answer☑️✔️..causes permanent injury to human skin at a rate by DOT
regulation; liquid corrodes 1/4 inch of steel or aluminum within a year
design pressure - answer☑️✔️..max gauge pressure to withstand safely under the temp and
conditions
dispensing - answer☑️✔️..pour/transfer material from container (can release products)
,educational laboratory unit - answer☑️✔️..education purposes for students through 12th
grade
excess flow control - answer☑️✔️..fail-safe system to shut off flow cause by pressurized piping
system rupture
exhausted enclosure - answer☑️✔️..device (typically a hood equipped w a fan) to capture and
exhaust workstation's mists; enclosure doesn't include room w ventilation
explosion - answer☑️✔️..expansion of gases, with either shock wave or disruption, of
enclosed material; explosion effects stem from
-chem changes
-physical changes (tank ruptures)
- atomic changes (nuclear fission or fusion)
chem changes - answer☑️✔️..-rapid oxidation
-deflaration
-detonation
-decomposition of molecules or run away polymerization
face velocity - answer☑️✔️..rate of air moving into chem fume hood entrance or place
(measured at plane)
fire separation - answer☑️✔️..horizontal/vertical fire resistance-rated assembly of materials
that have protected opening and designed to restrict fire spread
flammable gas - answer☑️✔️..gaseous state at normal atm temp or pressure; can ignite or
burn when mixed with oxidizer
,oxidizers - answer☑️✔️..-air
-oxygen
flammable liquid - answer☑️✔️..liquid w closed-cup flash point below 100F̊
flammable solid - answer☑️✔️..solid (other than blasting agent or explosive) either in
elemental or alloy form, causes fire through friction, absorption of moisture, spontaneous chem
change, heat, ignites below 212F̊
example of flammable solids - answer☑️✔️..-aluminum powder
-camphor
-magnesium
-matches
-naphthalene
-nitrocellulose
-phosphorous
-sulfur and picric acid (wetted w greater than 10% water)
flammable vapors - answer☑️✔️..concentration of flammable components greater than 25%
of lower flammable limit (LFL)
flash point - answer☑️✔️..min temp in F for liquid gives off sufficient vapor to create ignitable
mixture near surface in container --> will not sustain combustion
, gas cabinet - answer☑️✔️..enclosed, noncombustible enclosure provides isolated
environment for compressed gas containers (has doors and access ports for exchanging
containers and accessing pressure-regulating controls)
general supervision - answer☑️✔️..supervision of someone w certificate of fitness for when
someone else does duties from Figre Code; storage of hazardous material too
glove box - answer☑️✔️..sealed enclosure for items inside a box that need long gloves sealed
to ports in walls of enclosure
handling - answer☑️✔️..actions of affecting material
HAZARDOUS LOCATIONS CLASSIFICATIONS DESCRIPTIONS FOR CLASS 1
DIVISION 2 - answer☑️✔️..ignitable concentration present in atm under abnormal ops
conditions
hazardous materials - answer☑️✔️..chems that are physical/health hazards defined in Fire
Code (either usable of wastes)
health hazard - answer☑️✔️..classification of chemical where statically evidence shows it
causes acute or chronic health effects in exposed person (toxic and corrosive)
impairment coordinator - answer☑️✔️..person designated by owner and responsible for
proper notification/safety precautions when fire protection system out of service
incompatible materials - answer☑️✔️..materials combined to be hazardous life/property
instructor - answer☑️✔️..teach in education/isntructional laboratories