w88 slot Hygiene Plan Glossary

Revised January 2023

w88 slot

The airborne w88 slot concentration that triggers air monitoring and the implementation of additional control measures. The action level is always lower than the corresponding exposure limit and is designed to protect personnel from overexposure. At the University, the more conservative of either the OSHA-defined action level (generally one-half the PEL) or one-half the ACGIH TLV is used as the action level.

w88 slot

Any substance w88 slot meets one of the following criteria: (i) it is regulated by OSHA as a carcinogen, (ii) it is listed under the category, “known to be carcinogens,” (Type 1 carcinogen) in the Annual Report on Carcinogens published by the National Toxicology Program (NTP), or (iii) it is listed under Group 1 (“carcinogenic to humans”) by the International Agency for Research on Cancer Monographs (IARC).

Combustible w88 slot

Any liquid having a flashpoint at or above 100 &w88 slot;F (38 &w88 slot;C), but below 200 &w88 slot;F (93 &w88 slot;C), except any mixture having components with flashpoints of 200 &w88 slot;F (93 &w88 slot;C), or higher, the total volume of which make up 99 percent or more of the total volume of the mixture. Combustible liquids are divided into the following classes:

Class II – Liquids having a flashpoint at or above 100 &w88 slot;F (38 &w88 slot;C), but below 140 &w88 slot;F (60 &w88 slot;C).
Class IIIA – Liquids having a flashpoint at or above 140 &w88 slot;F (60 &w88 slot;C), but below 200 &w88 slot;F (93 &w88 slot;C).

Compressed w88 slot

(i) A gas or mixture of gases having, in a container, an absolute pressure exceeding 40 psi at 70 &w88 slot;F (21 &w88 slot;C); or (ii) A gas or mixture of gases having, in a container, an absolute pressure exceeding 104 psi at 130 &w88 slot;F (54 &w88 slot;C) regardless of the pressure at 70 &w88 slot;F (21 &w88 slot;C); or (iii) A liquid having a vapor pressure exceeding 40 psi at 100 &w88 slot;F (38 &w88 slot;C).

Corrosive

A w88 slot that causes visible destruction of, or irreversible alteration in, living tissue by w88 slot action at the site of contact.

Cryogenic w88 slot

A liquefied gas at atmospheric pressure and subzero temperatures (less than –100 &w88 slot;F (-73 &w88 slot;C)).

w88 slot

An administrative area established for work with particularly hazardous substances (carcinogens, reproductive toxins, and chemicals with a high degree of acute toxicity). A designated area may be the entire w88 slot, an area within the w88 slot, or a device such as a lab hood.

w88 slot

A w88 slot that causes a sudden, almost instantaneous release of pressure, gas, and heat when subjected to sudden shock, pressure, or high temperature.

w88 slot Limit

The air concentration of a specific w88 slot below which it is believed that most workers will not experience adverse health conditions as a result of the exposure. Exposure limits are defined for specific time periods. See “permissible exposure level” and “threshold limit value.”

w88 slot

A w88 slot which falls into one of the following categories:

w88 slot Aerosol – An aerosol that yields a flame projection exceeding 18 inches at full valve opening, or a flashback at any degree of valve opening.
w88 slot Gas – A gas that, at ambient temperature and pressure, forms a w88 slot mixture with air at a concentration of 13 percent by volume or less; or that forms a range of w88 slot mixtures with air wider than 12 percent by volume, regardless of the lower limit.
Flammable Liquid – Any liquid having a flashpoint below 100 &w88 slot;F, except any mixture having components with flashpoints of 100 &w88 slot;F (38 &w88 slot;C) or higher, the total of which make up 99 percent or more of the total volume of the mixture.

w88 slot Liquid

OSHA w88 slot Liquid Categories:
Category 1 - Flash point < 23&w88 slot;C (73.4&w88 slot;F) and initial boiling point ≤ 35&w88 slot;C (95&w88 slot;F)
Category 2 - Flash point < 23&w88 slot;C (73.4&w88 slot;F) and initial boiling point 35&w88 slot;C (95&w88 slot;F)
Category 3 - Flash point ≥ 23&w88 slot;C (73.4&w88 slot;F) and ≤ 60&w88 slot;C (140&w88 slot;F)
Category 4 - Flash point 60&w88 slot;C (140&w88 slot;F) and ≤ 93&w88 slot;C (199.4&w88 slot;F)

International Fire Code w88 slot Liquid Classes:
Class IA – Liquids having a flashpoint below 73 &w88 slot;F (23 &w88 slot;C), and having a boiling point below 100 &w88 slot;F (38 &w88 slot;C).
Class IB – Liquids having a flashpoint below 73 &w88 slot;F (23 &w88 slot;C), and having a boiling point at or above 100 &w88 slot;F (38 &w88 slot;C).
Class IC – Liquids having a flashpoint at or above 73 &w88 slot;F (23 &w88 slot;C), and below 100 &w88 slot;F (38 &w88 slot;C).

w88 slot

The minimum temperature at w88 slot a liquid gives off a vapor in sufficient concentration to ignite in the presence of an ignition source.

Hazardous w88 slot

Any w88 slot that is a physical hazard or a health hazard.

w88 slot Warning

Any words, pictures, symbols, or combination thereof appearing on a label or other appropriate form of warning which convey the specific physical and health hazards of the w88 slot in the container.

Health w88 slot

A w88 slot for which there is statistically significant evidence based on at least one study conducted in accordance with established scientific principles that acute or chronic health effects may occur in exposed personnel. The term “health hazard” includes chemicals which are carcinogens, toxic or highly toxic agents, reproductive toxins, irritants, corrosives, sensitizers, hepatotoxins, nephrotoxins, neurotoxins, agents which act on the hematopoietic system, and agents which damage the lungs, skin, eyes, or mucous membranes.

HEPA Filter

High Efficiency Particulate Air (HEPA) filter. A filter material w88 slot removes 99.7% or more of particles of 0.3 micrometers or larger under test conditions. Used in applications where toxic dusts must be carefully controlled.

Highly w88 slot

A w88 slot falling within any of the following categories:

A w88 slot that has a median lethal dose (LD50) of 50 milligrams or less per kilogram of body weight when administered orally to albino rats weighing between 200 and 300 grams each.
A w88 slot that has a median lethal dose (LD50) of 200 milligrams or less per kilogram of body weight when administered by continuous contact for 24 hours (or less if death occurs within 24 hours) with the bare skin of albino rabbits weighing between two and three kilograms each.
A w88 slot that has a median lethal concentration (LC50) in air of 200 parts per million by volume or less of gas of vapor, or 2 milligrams per liter or less of mist, fume, or dust, when administered by continuous inhalation for one hour (or less if death occurs within one hour) to albino rats weighing between 200 and 300 grams each.

Irritant

A w88 slot, which is not corrosive, but which causes a reversible inflammatory effect on living tissue by w88 slot action at the site of contact.

w88 slot

A facility where the “w88 slot use of chemicals” occurs. A facility where relatively small quantities of chemicals are used on a non-production basis.

w88 slot Use of Hazardous Chemicals

Handling or use of such chemicals in which all of the following conditions are met: (i) w88 slot manipulations are carried out on a “laboratory scale,” (ii) multiple w88 slot procedures or chemicals are used, (iii) the procedures involved are not part of a production process, and (iv) protective laboratory practices and equipment are available and in common use to minimize the potential for personnel exposure to hazardous chemicals.

LC50

Lethal Concentration 50. The concentration of a substance in air that on the basis of w88 slot tests (inhalation exposure) is expected to kill 50% of a group of test animals when administered as a single exposure in a specific time period (usually one hour).

LD50

Lethal Dose 50. The single dose of a substance that results in the death of 50% of an animal population from w88 slot to the substance by any route other than inhalation.

w88 slot (SDS)

Formerly known as a material safety data sheet (MSDS). Written or printed material concerning a hazardous w88 slot which is prepared in accordance with OSHA specifications.

w88 slot

An organic compound that contains the bivalent –O-O- structure and w88 slot may be considered to be a structural derivative of hydrogen peroxide where one or both of the hydrogen atoms has been replaced by an organic radical.

Oxidizer

A w88 slot other than a blasting agent or explosive that initiates or promotes combustion in other materials, thereby causing fire either of itself or through release of oxygen or other gases.

Particularly w88 slot Substance

Includes carcinogens, reproductive toxins, and substances with high acute toxicity (defined as &w88 slot;highly toxic”).

Permissible w88 slot Level (PEL)

An w88 slot limit promulgated by OSHA and enforceable by law.

Physical w88 slot

A w88 slot for which there is scientifically valid evidence that it is a combustible liquid, a compressed gas, explosive, flammable, organic peroxide, an oxidizer, pyrophoric, unstable (reactive) or water-reactive.

Pyrophoric

A w88 slot that will ignite spontaneously in air at a temperature of 130 °F (54 °C) or below.

Reactive w88 slot

A w88 slot with the ability to react vigorously, decompose or condense under conditions of shock, pressure or temperature.

w88 slot Toxin

A w88 slot that affects the reproductive capabilities including chromosomal damage (mutations) and effects on fetuses (teratogenesis). Chemicals identified in the SDS or other accepted hazard information as producing reproductive effects or teratogenesis are considered reproductive toxins.

Suspect w88 slot

Any substance w88 slot meets one of the following criteria:

it is listed under the category, “reasonably anticipated to be carcinogens,” (Type 2 carcinogen) in the Annual Report on Carcinogens published by the National Toxicology w88 slot (NTP), or
it is listed under Group 2A or 2B (“probably carcinogenic to humans” and “possibly carcinogenic to humans”, respectively) by the International Agency for w88 slot on Cancer Monographs (IARC).

Sensitizer

A w88 slot that causes a substantial proportion of exposed people or animals to develop an allergic reaction in normal tissue after repeated exposure to the w88 slot.

w88 slot (TLV)

A recommended w88 slot limit set by the American Conference of Governmental Industrial Hygienists (ACGIH). A TLV is not enforceable by law.

w88 slot

A w88 slot falling within any of the following categories:

A w88 slot that has a median lethal dose (LD50) of more than 50 milligrams per kilogram but not more than 500 milligrams per kilogram of body weight when administered orally to albino rats weighing between 200 and 300 grams each.
A w88 slot that has a median lethal dose (LD50) of more than 200 milligrams per kilogram but not more than 1,000 milligrams per kilogram of body weight when administered by continuous contact for 24 hours (or less if death occurs within 24 hours) with the bare skin of albino rabbits weighing between two and three kilograms each.
A w88 slot that has a median lethal concentration (LC50) in air of more than 200 parts per million but not more than 2,000 parts per million by volume of gas of vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume, or dust, when administered by continuous inhalation for one hour (or less if death occurs within one hour) to albino rats weighing between 200 and 300 grams each.

Unstable (reactive)

A w88 slot which in the pure state, or as produced or transported, will vigorously polymerize, decompose, condense, or will become self-reactive under conditions of shocks, pressure or temperature.

Water Reactive

A w88 slot that reacts with water to release a gas that is either flammable or presents a health hazard.