SPLOPS module 5 Flashcards
definition of sublimation
the ability of a solid to change state directly to a gas.
defintion of temperature
measure of heat energy.
definition of vapor pressure
ability of material to evaporate.
what are the common units of measurement for pressure?
760 mmhg
760 torr
1 atm
14.7psi
what is vapor density?
the ability of the vapor to rise or sink when compared to air
How is vapor density measured (2 ways)?
in relation to air being 1 and MW of air being 29.
Definition of flash point?
minimum temp of a LIQUID can ignite a flash in the vapor space of the liquid.
NFPA definition of Flammable liquid?
NFPA definition of combustable liquid?
liquids have flash points less than 100 degrees F
liquids have flash points between 100 and 200 degrees F
DOT definition of flammable liquid?
liquid have a flash point less than 140 degrees F.
the lower the flash point the ________ flammability of the liquid.
“Higher”
What does OC and CC mean with relation to flammable liquids?
open cup and closed cup testing.
What is the flash point of gasoline?
-45 degrees F
1% equals how many PPM?
10,000.
Definition of LEL and UEL?
concentration of vapor from a liquid
or flammable gas in air.
Pyrophoric solids ignite at what temperature?
at or below 130 degrees F
Definition of specific gravity?
the weight of a material with reference to water wether it will sink or float. Water being 1.0.
Definition of solubility?
ability of a substance to mix completely with another substance.
Definition of Solvent?
material in GREATER concentration in a mixture
Definition of solute?
material in LESSER concentration in a mixture.
what are non-polar substances?
gasolines, oils, petroleum based products.
oxidizers and corrosives make what class of chemical?
inorganic perioxides
Organic peroxides are composed of what?
an oxidizer and compound that contains a fuel.
Which “TYPE” of organic peroxides are the most unstable and forbidden in transport?
Type A and are usually dissolved in a solvent to prevent the chemical reaction.
Definition of corrosivity?
solid, liquid, or gas that burns, irritates, or destructively attacks organic tissues.
Either acids or bases.
Acidity is based on what factor?
amount of H ions in solution.
DOT definition of compressed gas?
pressure of 40psi at 70 degrees F.
what percentage of space must remain in the container of a compressed gas?
15%
Home propane tank pressures are regulated at?
working pressure of 240psi
pressure relief @ 375psi
testing pressure @ 480psi.
Cyrogenics are defined at what temperature?
Boiling point - 130 degrees F
Expansion ratio for LNG- liquid natural gas?
600:1
Expansion ratio of LPG- liquified petroleum gas?
250:1
Definition of “ignition temperature or Auto ignition temperature”?
Temperature at which a materials vapors start to burn without flame or other ignition source.
Definition of viscosity?
ability of a liquid to be poured.
Emmited energy as a result of a change in the nucleus or its atoms is called?
Radioactivity.
the amount of time it takes for half the atoms in a sample to decay is what?
half- life.
Properties of alpha particles
shortest traveling distance at about 4”
largest of radioactive particles
lowest energy emmited.
Radioactive particles cause damage by 2 ways:
disrupting cell division
forming H202 chemicals in the body.
Properties of Beta particles
travel distance of approx 30ft.
moderate size particle
moderate energy emited.
Properties of Neutrons
Travels the furthest and requires significant shielding
size is larger than beta but 1/4 the size of alpha.
found generally with atomic weapons.
Difference between gamma and x-rays origination?
Gamma originate in the nucleus and x-rays outside the the nucleus.
Definition of contamination?
when a radioactive material becomes attached to something.
By doubling the distance in regards to radioactivity what happens?
the energy is decreased by 1/4.
Radiation is measured in what units?
RAD- radiation absorbed dose
OSHA radiation exposure limits are ?
3 rem/ quarter or 5 rem/ year.
