Laboratory Safety Chemical Hygiene Plan (CHP)
OSHA's Occupational Exposure to Hazardous Chemicals in Laboratories standard
(29 CFR 1910.1450), referred to as the Laboratory standard, specifies the mandatory
requirements of a Chemical Hygiene Plan (CHP) to protect laboratory workers from
harm due to hazardous chemicals. The CHP is a written program stating the policies,
procedures and responsibilities that protect workers from the health hazards associated
with the hazardous chemicals used in that particular workplace.
Required CHP Elements
- Standard operating procedures relevant to safety
and health considerations for each activity
involving the use of hazardous chemicals.
- Criteria that the employer will use to determine
and implement control measures to reduce
exposure to hazardous materials [i.e., engineering
controls, the use of personal protective
equipment (PPE), and hygiene practices] with
particular attention given to selecting control
measures for extremely hazardous materials.
- A requirement to ensure that fume hoods and
other protective equipment are functioning
properly and identify the specific measures
the employer will take to ensure proper and
adequate performance of such equipment.
- Information to be provided to lab personnel
working with hazardous substances include:
The circumstances under which a particular
laboratory operation, procedure or activity
requires prior approval from the employer or
the employer's designee before being implemented.
Designation of personnel responsible for implementing
the CHP, including the assignment of a
Chemical Hygiene Officer and, if appropriate,
establishment of a Chemical Hygiene
Provisions for additional worker protection for
work with particularly hazardous substances.
These include "select carcinogens," reproductive
toxins and substances that have a high
degree of acute toxicity. Specific consideration
must be given to the following provisions and
shall be included where appropriate:
- The contents of the Laboratory standard and
- The location and availability of the employer's
- The permissible exposure limits (PELs) for
OSHA regulated substances or recommended
exposure limits for other hazardous
chemicals where there is no applicable
- The signs and symptoms associated with
exposures to hazardous chemicals used in
- The location and availability of known reference
materials on the hazards, safe handling,
storage and disposal of hazardous chemicals
found in the laboratory including, but not
limited to, the Material Safety Data Sheets
received from the chemical supplier.
The employer must review and evaluate the
effectiveness of the CHP at least annually and
update it as necessary.
- Establishment of a designated area.
- Use of containment devices such as fume
hoods or glove boxes.
- Procedures for safe removal of contaminated
- Decontamination procedures.
Worker Training Must Include:
- Methods and observations that may be used to
detect the presence or release of a hazardous
chemical (such as monitoring conducted by
the employer, continuous monitoring devices,
visual appearance or odor of hazardous
chemicals when being released, etc.).
- The physical and health hazards of chemicals in
the work area.
- The measures workers can take to protect
themselves from these hazards, including specific
procedures the employer has implemented
to protect workers from exposure to hazardous
chemicals, such as appropriate work practices,
emergency procedures, and personal protective
equipment to be used.
- The applicable details of the employer's written
Medical Exams and Consultation
The employer must provide all personnel who
work with hazardous chemicals an opportunity to
receive medical attention, including any follow-up
examinations which the examining physician
determines to be necessary, under the following
- Whenever a worker develops signs or symptoms
associated with a hazardous chemical to
which the worker may have been exposed in
the laboratory, the worker must be provided an
opportunity to receive an appropriate medical
- Where exposure monitoring reveals an exposure
level routinely above the action level (or in
the absence of an action level, the PEL) for an OSHA regulated substance for which there are
exposure monitoring and medical surveillance
requirements, medical surveillance must be
established for the affected worker(s) as
prescribed by the particular standard.
- Whenever an event takes place in the work
area such as a spill, leak, explosion or other
occurrence resulting in the likelihood of a
hazardous exposure, the affected worker(s)
must be provided an opportunity for a medical
consultation to determine the need for a
- All medical examinations and consultations
must be performed by or under the direct
supervision of a licensed physician and be
provided without cost to the worker, without
loss of pay and at a reasonable time and place.
For additional information on developing a CHP,
consult the following sources:
- View the complete standard at the OSHA Web
- Appendix A of 29 CFR 1910.1450 provides
non-mandatory recommendations to assist in
developing a CHP.
This is one in a series of informational fact sheets highlighting OSHA programs, policies orstandards. It does not impose any new compliance requirements. For a comprehensive list of compliance requirements of OSHA standards or regulations, refer to Title 29 of the Code of Federal Regulations. This information will be made available to sensory-impaired individuals upon request. The voice phone is (202) 693-1999; the teletypewriter (TTY) number is (877) 889-5627.
For assistance, contact us. We can help. It's confidential:
U.S. Department of Labor
www.osha.gov (800) 321-OSHA (6742)
OSHA FS-3461 8/2011
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