CHEMICAL HYGIENE PLAN

Clemson University

2008

Prepared by: Naomi Kelly

Chemical Hygiene Officer

THE LABORATORY STANDARD

The Occupational Safety and Health Administration's (OSHA) regulation for "Occupational Exposures to Hazardous Chemicals in Laboratories", 29CFR 1910.1450 requires that all facilities engaged in the laboratory use of hazardous chemicals develop and implement a written "Chemical Hygiene Plan" which sets forth procedures, equipment, personal protective equipment, work practices, and policies that when implemented and used properly will protect employees from the health hazards presented by hazardous chemicals used in their workplace.

The following Information constitutes the basis for the written Chemical Hygiene Plan for all Clemson University laboratory employees who work in areas where hazardous chemicals are used. Laboratory supervisors must complete all segments where indicated for personnel, laboratory-specific information, policies, and procedures. It is impossible to design a set of rules that will cover all possible hazards and occurrences. The most important rule is that everyone involved in laboratory operations, from the highest administrative level to the individual worker, must be safety minded. Safety awareness can become part of everyone's habits only if the issue of safety is discussed repeatedly and only if senior and responsible faculty and staff evince a sincere and continuing interest in providing a safe and healthy work environment.

Chemical hygiene is subject to development, advancement and change. Accordingly, this guide will be revised as necessary.

Employees who work with hazardous chemicals in a laboratory must be informed of the location and availability of this plan.

The Occupational Safety and Health Administration (OSHA) requires that laboratory employees be made aware of

the Chemical Hygiene Plan at their place of employment (29 CFR 1910.1450).

After reading the "Clemson University Chemical Hygiene Plan and Hazardous Materials Safety Manual," please complete and return a copy of this form to your supervisor or to your departmental safety coordinator/contact. By signing below you acknowledge that you are aware of the policies and procedures set forth in the University Chemical Hygiene Plan.

Your supervisor will provide additional information and specific training as appropriate.

Please type or print legibly.

Name: _______________________________

Work Phone:__________________________

Staff or Student ID number: ______________________________________________

Department: __________________________________________________________

Job Title (if employee): __________________________________________

Building: ______________________ Room: _______________________________

(if student): ___________________________________

Supervisor, instructor, or P.I. for your area: _____________________________

Signature: _____________________________________ Date:________________

Completed Chemical Hygiene Plan Awareness Certifications are to be filed in a central administrative location within the staff member’s department. A list of names and ID numbers with signatures may be attached to or inserted after this page rather than filing individual names for employees/students under the supervision of one faculty member. These and all safety training records should be organized in a way that allows original records to be retrieved quickly and efficiently on request by an OSHA inspector or a EHS staff member, and to be retrieved for a single staff member or for an entire work group (identified by supervisor).

CHEMICAL HYGIENE PLAN

Section

I. Personnel Designations

A. Specific Personnel Responsibilities

B. Chemical Hygiene Officer Responsibilities

II. Approval of Laboratory Procedures

A. Chemical Hazards Subcommittee

B. Biohazards Subcommittee

C. Recombinant DNA Subcommitee

III. Standard Operating Procedures

A. General Requirements

1. Safe Work Practices With Chemicals

2. Safe Work Practices With Laboratory Equipment

3. The Laboratory Facility

4. Chemical Procurement, Distribution, and Storage

5. Housekeeping, Maintenance, and Inspections

6. Protective Apparel and Equipment

7. Records

8. Signs and Labels

9. Spills and Other Laboratory Incidents

10. Waste Disposal Program

11. Project Review

12. Synthesized Substances

B. Laboratory Specific Operating Procedures

IV. Ventilation Equipment Performance

A. General Requirements

1. Chemical Fume Hoods

2. Types of Fume Hoods

3. Special Purpose Fume Hoods

4. Other Ventilation Devices

5. Special Ventilation Areas

B. Specific Criteria

V. Standards for Handling Compressed Gas Cylinders

A. Introduction

B. General Standards

C. Restricted Products

D. Flammable Gases

E. Acceptance of Cylinders From Vendors

F. Handling and Storage of Cylinders

G. Pressure Regulators and Needle Valves

H. Leak Testing

I. Empty Cylinders

J. Hydrostatic Testing

K. Lecture Bottles

L. Acetylene

M. Cryogens

N. Compressed Air

VI. Reduction of Employee Exposure

A. General Requirements

1. Employee Exposure Determination

2. Chemical Spill or Leak

3. Odor Detection

4. Signs and Symptoms of Overexposure

B. Specific Criteria

VII. Medical Consultations and Examinations

A. General Requirements

B. Medical Programs

C. Specific Medical Requirements

VIII. Particularly Hazardous Substances

A. Routes of Exposure

B. Handling Procedures for Various Substances

C. Laboratory Specific Operating Procedures

IX. Employee Information and Training

A. General Requirements

1. Information

2. Training

B. Specific Training Required for Employees

X. Acronyms, Definitions, and Common Terms Used in Material Safety Data Sheets

XI. References

XII. EHS Personnel Information

APPENDICES

A. Obtaining a Material Safety Data Sheet

B. Hazardous Chemical Inventory Form

C. Guidelines for The Storage of Laboratory Chemicals

D. Procedures for Handling Chemical Spills

E. Signs and Labels

F. Shock Sensitive and Highly Reactive Chemicals

G. Hydrofluoric Acid

H. Personal Protective Equipment

I. Laboratory Inspection Checklist

J. Training and Information Resources

K. Creating Standard Operating Procedures

L. Use of Perchloric Acid

M. Procedure for Cleaning Lab Coats

N. Emergency Drench Equipment

Personnel Designations

The University Chemical Hygiene Program is overseen by the University’s Chemical Hygiene Officer (CHO) who reports to the Director of Environmental Health and Safety (EHS).

A. Personnel Responsibilities

1. Clemson University President: Ultimately responsible for chemical hygiene within the institution and must, with other administrators, provide continuing support for institutional chemical hygiene and other safety related compliance.

2. Department Heads or their designees responsibilities include:

a. Working with the Chemical Hygiene Officer, administrators, and other employees to develop and implement appropriate chemical hygiene policies and practices

b. Monitoring procurement, use, and disposal (including recycling) of chemicals used in the lab

c. Seeing that appropriate audits are maintained

d. Helping project directors develop precautions and provide adequate facilities

e. Knowing the current legal requirements for regulated substances

f. Seeking ways to improve the chemical hygiene program

g. Maintain discipline and enforce rules

3. Principal Investigator or Laboratory Supervisor responsibilities include:

a. Ensuring that workers know and follow the chemical hygiene rules.

b. Providing regular, formal chemical hygiene and housekeeping inspections including routine inspections of emergency equipment.

c. Knowing the current legal requirements concerning regulated substances.

d. Determining the required levels of protective apparel and equipment; ensuring that protective equipment is available and in working order; ensuring that appropriate training has been provided; and ensuring that employees are using personal protective equipment when required.

e. Require that visitors to the laboratory follow the same rules as other laboratory workers and are escorted and supervised at all times.

f. Ensure that faculty, students, and staff have access to, understand, and are able to comply with the information on the appropriate MSDSs.

g. Carefully review all procedures for possible health, safety, and environmental problems before the work is begun.

h. Ensure that facilities, equipment, and training for use of any material being ordered are adequate before the material is ordered.

i. Observing the rules and recommendations outlined in the Chemical Hygiene Plan.

j. Wearing protective equipment where required.

k. Maintain discipline and enforce rules.

4. Laboratory Workers are responsible for:

a. Planning and conducting each operation in accordance with the institutional chemical hygiene procedures.

b. Following prescribed safety practices and University policies and procedures.

c. Developing good personal chemical hygiene habits.

d. Know the location of and how to use the emergency equipment in your area, as well as how to obtain additional help in an emergency, and be familiar with emergency procedures.

B. Chemical Hygiene Officer Responsibilities

1. Work with administrators and other employees to develop and implement appropriate chemical hygiene policies and practices.

2. Maintain appropriate audits.

3. Help departments develop Standard Operating Procedures for the hazardous operations.

4. Seek ways of improving the Chemical Hygiene Plan.

5. Update and revise the Chemical Hygiene Plan as necessary (review at least annually).

6. Perform random safety reviews.

7. Develop and maintain a Chemical Hygiene training program.

8. Review the Chemical Hygiene Program and training programs at least yearly, and make necessary changes.

9. Know the current legal requirements concerning regulated substances.

Institutional Biosafety Committee (IBC)

Overview:

Clemson University aims to provide a safe and healthy work environment for faculty, staff, students and visitors. The intent is to minimize, to the extent practicable, all recognizable hazards and to comply with all federal and State laws and regulations.

The Office of Research Compliance (ORC) provides support and training for faculty, staff, and students in regulatory requirements for research and teaching activities involving vertebrate animals, research involving the use of human subjects, and research involving the use of recombinant DNA and hazardous agents. The ORC is responsible for the development and implementation of University policies and for coordinating institutional compliance with federal and state law-regulations. The ORC supports the university community in promoting the responsible conduct of research. Information about the ORC can be accessed at: http://www.clemson.edu/research/orcSite/indexComply.htm

The Institutional Biosafety Committee (IBC) is responsible for reviewing all research that involves the use of recombinant DNA, biological hazards (including human blood, tissue, infectious agents, cell lines and select agents) and chemical hazards (that are highly toxic, mutagenic, teratogenic, carcinogenic, explosive or on the Schedule I and II drugs) and ensuring that the proposed activities comply with the federal regulations governing them. The role of the committee is to ensure the safety of personnel working with these materials and that laboratory practices conform to federal and state regulations. Recombinant DNA being considered in this context is defined as work with those molecules which are constructed outside living cells by joining natural or synthetic DNA segments to DNA molecules that can replicate in a living cell or which result from the replication of those described above.

All research activities as described above, regardless of source of funding, must be reviewed by the IBC. The IBC has the responsibility and authority to review, approve, disapprove, or require changes in research activities. The IBC holds meetings as needed to review protocols. This is usually on a monthly basis. Clemson University’s IBC is registered with the National Institutes of Health’s Office of Biotechnology Activities (OBA). The IBC works closely with Clemson University’s Department of Environmental Health and Safety. Research activities may also involve the use of animals or humans. In these instances, research applications also need to be reviewed and approved by respective research compliance committees.

The basis of compliance for the IBC is determined by the “NIH-Guidelines for Research Involving Recombinant DNA Molecules” (April 2002). The NIH Guidelines state that the Institutional Biosafety Committee’s (IBC) responsibilities need not be restricted to recombinant DNA research. Clemson University, at the present time, has elected to expand the scope of the IBC to include the review of hazardous biological and hazardous chemical agents.

Information about the IBC, its regulations and policies, and steps in getting started can be accessed at: http://www.clemson.edu/research/orcSite/indexComply.htm

Current IBC forms can be obtained at: http://www.clemson.edu/research/orcSite/orcIBC_Forms.htm

RECOMBINANT DNA:

The Clemson University IBC reviews and oversees projects that deal with recombinant DNA technologies. Clemson University’s IBC is made up of faculty, staff, and community members, for the review of protocols and compliance in recombinant DNA matters. While the most scrutinized protocols are those dealing with human gene therapy or the environmental release of genetically engineered organisms, all protocols including those using only laboratory contained experiments are closely examined. CU has a policy of requiring that all investigators file a protocol when using recombinant DNA molecules or

organisms, although certain types of experiments will qualify as "Exempt". The determination of “exempt from review of the Full IBC Committee” is made by the IBC and not the investigator. This process guarantees our compliance with Federal regulations, and allows us to assure the public that we are safeguarding the public interest.

If you work with recombinant DNA, (see Section I-B of the NIH Guidelines: Definition of Recombinant DNA Molecules, NIH-Guidelines for Research Involving Recombinant DNA Molecules” (April 2002), a component of the protocol form will require you to identify the section(s) and appendices of the NIH Guidelines appropriate for your experiments. A copy of the Guidelines for Research Involving Recombinant DNA Molecules is available on the Internet at http://www.nih.gov/od/oba/ or on the IBC website.

If you plan at any time to introduce genetically engineered organisms into the environment, additional information must be filed. For this component, you will need to complete Steps 1-4 in Part D of the protocol. You also will need to reference the USDA publication entitled Guidelines for Research Involving Planned Introduction into the Environment of Genetically Modified Organisms (December 3-4, 1991 or the most current version. This guide is located at http://www.aphis.usda.gov/brs/pdf/abrac%201991.pdf

Non-exempt recombinant DNA work will require Full Committee Review.

The following is a description of biological and hazardous chemicals that are reviewed by the IBC.

Biological Hazards:

A biohazard is a potentially dangerous infectious or toxic agent or material (tissue, blood, etc.) that is suspected to contain an infectious agent or whose hazard status is unknown. For Clemson University’s purpose, a biohazard is any BSL2 agent or above, or human or animal blood, tissue, or waste specimen has the potential to harbor infections agents or whose biohazard status is unknown. Human or non-human primate derived cell lines or similar are also considered biohazards (per OSHA definition). Infectious organisms include all agents (including prions) capable of causing disease in healthy humans or animals, whether these occur commonly in the environment or not. The Center for Disease Control-NIH Biosafety in Microbiological and Biomedical Laboratories 5^th edition manual http://www.cdc.gov/od/ohs/biosfty/bmbl5/bmbl5toc.htm should be used in completing the Biohazards Protocol section. Before any lab work with biohazards can be initiated, it is a requirement that all “hands on” personnel be enrolled in the Medical Surveillance Program (MSP), take Bloodborne Pathogen Training in the OSHA Standard on an annual basis and be offered appropriate inoculations against any pathogen for any occupational health purposes. If inoculations are not accepted, a waiver must be signed. Regardless of the source, if using human (including human cell lines) or non-human primate tissue or body fluid(s), a protocol will be required.

CHEMICAL HAZARDS:

any chemical listed as highly toxic, carcinogenic (confirmed or suspected), mutagenic, teratogenic or explosive on its MSDS must be covered by an approved protocol. If unqualified undergraduates are involved in the research then any chemical listed as toxic, highly toxic, carcinogenic (confirmed or suspected), teratogenic or explosive on its MSDS must be covered and the protocol. Unqualified undergraduates are those that lack at least a year of college level chemistry and biological science (e.g. general biology, microbiology, inorganic, organic biochemistry) or are under the age of 18.

Highly toxic agent is defined as:

1) A chemical 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.

2) A chemical 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.

3) A chemical that has a median lethal concentration (LC₅₀) in air of 200 parts per million by volume or

less of gas or 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.

Toxic agent is defined as:

1) A chemical 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.

2) A chemical 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.

3) A chemical 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 or vapor, or more than two 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.

Explosive agent is defined as the use of explosive material for their explosive property. The PI must contact EHS (Naomi Kelly at 864-656-1806).

EHS also requires that individuals working with chemicals at Clemson University take Chemical Hygiene training (http://ehs.clemson.edu/taining/CHP/index.html) and Hazardous Waste Management Training (http://ehs.clemson.edu/training/hazwaste/index.html).

RECOMBINANT DNA:

By definition (Federal Register 51 (88) page 16959 I-D-2), the CU IBC reviews and oversees projects that deal with recombinant DNA (rDNA) technologies. Clemson University must have such a committee made up of faculty, staff, and community members, for review of protocols and compliance in rDNA matters. While the most scrutinized protocols are those dealing with the environmental release of genetically engineered organisms, all protocols including those using only laboratory contained experiments are closely examined. CU has a policy of requesting that all investigators file a protocol when using rDNA molecules or organisms, although certain types of experiments will qualify as "Exempt". This process guarantees our compliance with Federal regulations and allows us to assure the public that we are safeguarding the public interest.

If you work with recombinant DNA, (see Section I-B of the NIH Guidelines: Definition of Recombinant DNA Molecules), a component of the protocol form will require you to identify the section(s) and appendices of the NIH Guidelines appropriate for your experiments. A copy of the Guidelines for Research Involving Recombinant DNA Molecules is available on the Internet at http://www.nih.gov/od/oba/. A hard copy is available in the Office of Research Compliance.

If you plan at any time to introduce genetically engineered organisms into the environment, additional information must be filed. For this component, you will need to complete Steps 1-4 in Part D of the protocol. You also will need to reference the USDA publication entitled Guidelines for Research Involving Planned Introduction into the Environment of Genetically Modified Organisms (December 3-4, 1991 or most current version).

Standard Operating Procedures

The following standard operating procedures must be followed by all laboratory workers where

laboratory work involves the use of hazardous chemicals.

A. General Requirements

1. Safe Work Practices With Chemicals

a. Minimize all chemical exposures: Because few laboratory chemicals are without hazards, general precautions for handling all laboratory chemicals should be adopted, along with specific guidelines for particular chemicals as needed. Skin contact with chemicals and inhalation of vapors should be avoided as a cardinal rule.

b. Avoid underestimation of risk: Even for substances of no known significant hazard, exposure should be minimized. For work with substances which present special hazards, special precautions should be taken. One should assume that any mixture will be more toxic than its most toxic component and that all substances of unknown toxicity are toxic. Refer to the Material Safety Data Sheet for specific information about a chemical or product containing hazardous chemicals. (See Appendix A, Obtaining a Material Safety Data Sheet)

c. Provide adequate ventilation: The best way to prevent exposure to airborne substances is to prevent their

escape into the working atmosphere by use of chemical hoods or biosafety cabinets other ventilation devices.

One should be familiar with the proper operation and use of a chemical hood. (See Section IV -Ventilation)

d. Institute a chemical hygiene program: A mandatory chemical hygiene program designed to minimize exposures has been prepared. Its implementation should be a regular, continuing effort, not merely a standby or short-term activity. This program should be followed by all laboratory personnel including employees, guest researchers, students, and visitors.

e. Material Safety Data Sheets: Material Safety Data Sheets must be available for all hazardous chemicals. MSDSs must be readily accessible to all employees who are working with or who might be exposed to hazardous chemicals. Those employees must be informed of the location of MSDSs; understand how to use information on the MSDSs; and must be able to comply with the information on the appropriate MSDS. (See Appendix A)

f. Observation of PELS, TLVs, or RELS: Permissible Exposure Limits (PELS) of OSHA are exposure limits set by OSHA, and must not be exceeded. Threshold Limit Values (TLVS) of the American Conference of Governmental Industrial Hygienists, or Recommended Exposure Limits (RELS) of the National Institute for Occupational Safety and Health) may also be used as guidelines in determining exposure levels. Even chemicals with high TLVs, PELs, or RELs should be used under chemical hoods whenever possible. PELs, TLVs and other exposure limits can be found on material safety data sheets.

g. Accidents and spills: (The following information applies to most chemical spills on a person. Some chemicals may have special first aid requirements. Consult the MSDS and other sources of information. For hydrofluoric acid, see Appendix G. For additional information on spills, see Appendix D).

· Eye Contact: Promptly flush eyes with water for a prolonged period (at least 15 minutes) and seek medical attention.

· Ingestion: Call 911 and report the nature of the chemical uptake. When reporting any accident or spill to the dispatcher please give the following information: your name, the location of the incident, and the nature and extent injury or symptoms. After calling 911, the Poison Control Center (1-800-922-1117) may be called for information on action that may be taken before the arrival of the EMS.

· Skin Contact: Promptly flush the affected area with copious amounts of water and seek medical attention. Remove any clothing that may have chemical contamination to prevent further exposure.

· Clean-up : Promptly clean up spills when appropriate or Call 911 for assistance from the HazMat Team; notify others in the building and evacuate. (See Appendix D).

· Employees involved in an accident or spill incident should immediately report the incident to their supervisor. If there is reason to believe that exposure has occurred during a chemical spill or release, the worker should promptly report to Redfern Health Center for medical consultation and possible evaluation based on the physician’s assessment. For injuries or exposures occurring after 4:30pm, employees should be taken to the Clemson Health Center on Highway 123 in Clemson or the emergency room at Oconee Memorial Hospital or Anderson Memorial Hospital.

h. Avoidance of "routine" Exposure

· Develop and encourage safe habits

· Avoid unnecessary exposure to chemicals by any route.

· Do not smell or taste chemicals.

· Vent any apparatus which may discharge toxic chemicals (e.g., vacuum pumps, distillation columns) into direct exhaust devices.

· Chemicals should be properly stored and used in a safe manner to prevent exposure.

· Do not allow release of toxic substances in cold rooms and warm rooms, since these have contained recirculated atmospheres.

· Use a chemical hood whenever possible when working with any hazardous chemical.

i. Choice of Chemicals: Use only those chemicals for which the quality of the available ventilation system is appropriate. Also, consideration should be given to selection of chemicals used. Where choices and chemical substitutes can be made, always choose chemicals having the lowest level of toxicity.

j. Eating, Smoking, Etc.

Because of the potential increase in the risk of infection and exposure to personnel, it is necessary to prohibit smoking, eating, drinking, and storage of food in laboratories which handle infectious or toxic materials or radioisotopes. An area or areas which provides complete physical separation from these laboratories should be established for the storage and consumption of food and beverage. These areas should be prominently posted (e.g., AREA FOR STORAGE AND CONSUMPTION OF FOOD, NO CHEMICALS). No chemical or chemical equipment should be allowed in such areas. Laboratory refrigerators, ice chests, cold rooms, and such should be properly labeled (e.g., NO FOOD OR BEVERAGE STORED IN THIS…). Laboratory doors should be posted (DO NOT EAT, DRINK, OR SMOKE IN THIS AREA).

· Do not eat, drink, chew gum, or apply cosmetics in areas where laboratory chemicals are present.

· Always wash hands before conducting these activities.

· Do not store or consume food or beverages in areas where chemicals are stored, handled, or used.

· Glassware or utensils which are also used for laboratory operations must never be used with food or beverages.

k. Equipment and Glassware: Handle and store laboratory glassware with care to avoid damage; do not use damaged glassware. Use extra care with Dewar flasks and other evacuated or pressurized glass apparatus; shield or wrap them to contain chemicals and fragments should implosion occur. Use equipment only for its designed purpose.

l. Personal Hygiene: Thoroughly wash hands immediately after working with chemicals.

m. Visitors: No children under 16 years of age are allowed into any laboratory or animal holding area except with the special permission of the Director, Environmental Health and Safety, or the Director of the Research and Education Center. No pets are allowed in any University building. Whenever visitors are allowed into a laboratory, it is the responsibility of the laboratory supervisor to ensure that they are supervised at all times, and that they follow the same rules as laboratory employees.

n. Avoid practical jokes or other behavior which might confuse, startle or distract another worker.

o. Mouth pipetting: Do not use mouth suction for pipetting or starting a siphon.

p. Syringes and Scalpel Blades

Syringes used with hazardous agents shall have needle-locking or equivalent tips to assure that the needles cannot separate during use. All needles, syringes, scalpels, and other sharps should be placed into puncture-proof sharps disposal containers and disposed of as biohazardous waste through the Department of Environmental Health and Safety.

Contact the Hazardous Waste Manager at 656-1770 to obtain sharps containers.

Do not recap needles after use.

q. Housekeeping: Good housekeeping is essential in laboratories. Keep the work area clean and uncluttered. Properly label and store chemicals and equipment; clean up the work area on completion of an operation or at the end of each day.

r. Planning: Seek information and advice about hazards, plan appropriate protective procedures, and plan positioning of equipment before beginning any new operation.

s. Unattended operations: It is recommended to leave no process/experiment unattended. If experiments must run while a researcher is not present, a sign containing information about the experiment and the name of the contact person for emergencies should be posted on the laboratory door. Lights should be left on and containment for toxic substances should be provided. In the event of a failure of a utility service such as cooling water or electricity to an unattended operation, provisions should be made in advance if a utility failure could result in a hazardous condition. Equipment such as power stirrers, hot plates, heating mantles, and water condensers should be equipped with fail-safe provisions such as flow monitors that will shut down equipment in case of water supply failure or fluctuation in water pressure, temperature monitors interlocked into the system, or fail-safe hose connectors.

Remember that at night, emergency personnel rely on accurate written instructions and information available at the site.

t. Planning: Seek information and advice about hazards, plan appropriate protective procedures, and plan positioning of equipment before beginning any new operation.

u. Vigilance: Be alert of unsafe conditions and see that they are corrected when detected.

x. Working alone: Avoid working alone in a building; do not work alone in a laboratory if the procedures being conducted are hazardous.

y. Transfer of chemicals into other containers: When transferring any hazardous substance into another container, you must ensure that the new container is compatible with the material being transferred before making the transfer. Never transfer any hazardous chemical into a container which was originally used to store food or food products.

z. Personal apparel

· Confine long hair and loose clothing.

· Suitable clothing shall be worn in the laboratory; shorts, short skirts and sandals/open shoes are not allowed.

· Clothing may absorb liquid spills that would otherwise come in contact with your skin. Long sleeves and long pants should be worn. Shorts, short skirts, etc. are not allowed in laboratories.

· Synthetic fabrics may increase the severity of injury in case of fire. Cotton is less prone to static electricity buildup than nylon or other synthetics.

· Wear substantial leather shoes in the laboratory to protect against chemical splashes or broken glass. Sandals, cloth sport shoes, perforated shoes, open-toed shoes, or high-heeled shoes may not be worn in laboratories.

2. Safe Practices with laboratory equipment

a. Equipment maintenance: Good equipment maintenance is important for safe, efficient operations. Equipment should be inspected and maintained regularly. Servicing schedules will depend on both the possibilities and the consequences of failure. Maintenance plans should include a procedure to ensure that a device that is out of service cannot be restarted.

b. Guarding: All mechanical equipment should be adequately furnished with guards that prevent access to electrical connections or moving parts (such as the belts and pulleys of a vacuum pump). Each laboratory worker should inspect equipment before using it to ensure that the guards are in place and functioning.

c. Shielding: Safety shielding should be used for any operation having the potential for explosion such as (a) whenever a reaction is attempted for the first time (small quantities of reactants should be used to minimize hazards); (b) whenever a familiar reaction is carried out on a larger than usual scale; (c) whenever operations are carried out under non-ambient conditions. Shields must be placed so that all personnel in the area are protected from the hazard.

d. Glassware: Accidents involving glassware are a leading cause of laboratory injuries.

· Borosilicate glassware is recommended for all laboratory glassware except for special experiments that use UV or other light sources.

· Careful handling and storage procedures should be used to avoid damaging glassware. Damaged items should be discarded or repaired.

· Adequate hand protection should be used when inserting glass tubing into rubber stoppers or corks or when placing rubber tubing on glass hose connections. Tubing should be fire polished or rounded and lubricated, and hands should be held close together to limit movement of glass should fracture occur. The use of plastic or metal connectors should be considered.

· Glass-blowing operations should not be attempted unless proper annealing facilities are available.

· Vacuum jacketed glass apparatus should be handled with extreme care to prevent implosions. Equipment such as Dewar flasks should be taped or shielded. Only glassware designed for vacuum work should be used for that purpose.

· Hand protection should be used when picking up broken glass.

· Proper instruction should be provided in the use of glass equipment designed for specialized tasks, which can represent unusual risks for the first-time user. (For example, separatory funnels containing volatile solvents can develop considerable pressure during use.)

e. Cold Traps and Cryogenic Hazards: The primary hazard of cryogenic materials is their extreme coldness. These, and surfaces they cool, can cause severe burns if allowed to contact the skin. Gloves and a face shield should be used when preparing or using some cold baths. Neither liquid nitrogen nor liquid air should be used to cool a flammable mixture in the presence of air because oxygen can condense from the air, which can cause an explosion hazard. Cryogenic or loose, dry leather gloves must be used when handling dry ice, which should be added slowly to the liquid portion of the cooling bath to avoid foaming over. Workers should avoid lowering their head into a dry ice chest (carbon dioxide is heavier than air, and suffocation can result).

f. Systems Under Pressure: Reactions should never be carried out in, nor heat applied to, an apparatus that is a closed system unless it is designed and tested to withstand pressure. Pressurized apparatus should have an appropriate relief device. If the reaction cannot be opened directly into the air, an inert gas purge and bubbler system should be used to avoid pressure buildup. Appropriate shielding must be provided whenever chemicals are heated or reactions are carried out in systems under pressure.

g. Extractions and Distillations

Extractions:

Extractions can present a hazard because of the potential buildup of pressure from a volatile solvent and an immiscible aqueous phase. Glass separatory funnels used in laboratory operations are particularly susceptible to problems because their stoppers or stopcocks can be forced out, resulting in a spill of the contained liquid. It is even possible for pressure to burst the vessel.

To use a separatory funnel correctly, do not attempt to extract a solution until it is cooler than the boiling point of the extractant. When a volatile solvent is used, the unstoppered separatory funnel should first be swirled to allow some solvent to vaporize and expel some air. Close the funnel and invert it with the stopper held in place and immediately open the stopcock to release more air plus vapor. Do this with the hand extended around the barrel to keep the stopcock plug securely seated.

Point the barrel of the separatory funnel away from yourself and others and vent it to the hood. Do not vent the funnel near a flame or other ignition source. Close the stopcock, shake with a swirl, and immediately open the stopcock with the funnel in the inverted position to vent the vapors again. If it is necessary to use a separatory funnel larger than one liter for an extraction with a volatile solvent, the force on the stopper may be too great, causing the stopper to be expelled. Consider performing the extraction in several smaller batches.

Distillations:

Potential dangers arise from pressure buildup, commonly used flammable materials, and the use of heat to vaporize the chemicals involved. Careful design and construction of the distillations system is required to accomplish effective separation and avoid leaks that can lead to fires or contamination of the work area.

It is necessary to ensure smooth boiling during the separation process and avoid bumping, which can blow apart the distillation apparatus. Stirring the distillation mixture is the best method to avoid bumping. Boiling stones are only effective for distillations at atmospheric pressure. Use fresh boiling stones when a liquid is boiled without stirring. Do not add boiling stones or any other material to a liquid that is near its boiling point, because this may cause it to boil over spontaneously.

An electric mantle heater, a ceramic cavity heater, steam coils, or a nonflammable liquid bath are the best to provide even heating. Silicone oil or another suitable high-boiling-temperature oil can be used on a hot plate. Hot water or steam may also be used in some cases. An extra thermometer inserted at the center bottom of the distilling flask will warn of dangerously high temperatures that could indicate exothermic decomposition. Do not distill or evaporate organic compounds to dryness unless they are known to be free of peroxides.

Because superheating and bumping occur frequently during distillation using reduced pressure, it is important that the distillation assembly is secure and the heat distributed more evenly than is possible with a flame. Evacuate the assembly gradually to minimize the possibility of bumping. Stirring, or using an air or nitrogen bleed tube, provides good vaporization without overheating and decomposition.

Put a standing shield in place for protection in the event of implosion. After finishing a reduced-pressure distillation, cool the system, then slowly bleed in air so as not to induce an explosion in a hot system. Pure nitrogen is preferred to air and can be used even before cooling the system.

In a steam distillation, minimize the accumulation of condensate in the distillation flask. The heat of steam condensation is very high, and overfilling the flask is less likely if condensation from the entering steam line is trapped and the flask heated or insulated to prevent excessive condensation.

h. Electrical Equipment: Electrical currents of very low amperage and voltage may result in fatal shock under certain circumstances. Voltages as low as 24 volts AC can be dangerous and present a lethal threat. Low-voltage DC currents do not normally present a hazard to human life, although severe burns are possible. The duration of contact with a live circuit affects the degree of damage, especially with regard to burns.

· All electrical switches shall be labeled, including circuit breakers in the service panels, and all laboratory personnel shall know where these controls are and how to shut off circuits or equipment in case of fire or other accident. Any electrical equipment that is not operating properly or seems to be overheating shall be turned off immediately and inspected by a qualified person.

· Electrical equipment should be inspected periodically to confirm that the cords and plugs are safe condition. Circuit diagrams, operating instructions, descriptions of hazards, and safety devices are usually provided by the manufacturer and should be kept on file for reference.

· Only three-wire grounded, double insulated, or isolated wiring and equipment shall be used in 110V-115V AC applications. All wiring and equipment shall comply with the National Electrical Code. In specifically designated laboratories, cold rooms, or storage rooms or other locations where concentrations of flammable vapor-air mixtures are likely to occur, certified explosion-proof wiring and equipment, including light fixtures, switches, and refrigerators shall be used. If you have any questions with regard to the code, contact the Office of Environmental Health and Safety.

· Series-wound motors with carbon brushes, typically found in household appliances such as blenders and mixers, are not spark-free and shall not be used in laboratories where flammable vapors accumulate. Equipment manufactured for use in laboratories generally contains induction motors.

· Electrical extension cords should be avoided where practical by installing additional electrical outlets. When they are used, the wire gauge shall be equal to or larger than the size of the cord being plugged into them. Electrical cords on equipment shall be discarded or repaired if frayed or damaged. Cords should be kept as short as practical to avoid tripping hazards and tangles.

· Place electrical equipment so as to minimize the possibility that water or chemicals could spill on it or that water could condense and enter the motor or controls. In particular, place such equipment away from safety showers. In cold rooms, minimize condensation by mounting electrical equipment on walls or vertical panels.

· Electrical equipment shall be de-energized and tagged or locked out according to OSHA requirements before repairs are made. If adjustments or other contacts are to be made with energized electrical equipment, a second person shall be present. Be sure you are not on a damp surface or touching a potential grounding surface. Use insulated tools, keep your hands dry, and wear safety glasses to prevent injury from sparks.

· If a worker receives an electrical shock and is in contact with the energized device, turn off the current if possible; or use nonconducting gloves or a nonconducting device to pull or push the victim free from the current source. Help victims only if you are certain that you will not endanger your own safety.

i. Static Electricity

Static electricity in association with the use of flammable liquids presents a significant hazard in the laboratory. Static electricity is found wherever equipment is in operation, materials are processed, liquids are being poured, or personnel are moving about. Some common potential sources of electrostatic discharges are ungrounded metal tanks and containers; metal-based clamps, nipples, or wire used with nonconducting hoses; high-pressure gas cylinders upon discharge; and clothing or containers made of plastic or synthetic materials.

· High voltages can be attained in a relatively short time span.

· Hazard is greatest during wintertime when the air is dry, but often air conditioning can remove enough moisture for a hazard to exist during summer months.

Many methods can be used to ground static electricity, but because of existing conditions in some areas the use of these grounding devices may be impossible to implement. Thus, personnel become the source of static charge. If personnel are engaged in work that could be hazardous because of accidental discharge of static electricity and cannot use grounding devices on their person, the simplest way to assure grounding is to make a contact with a water pipe. The static charge will transfer to ground via the pipe.

Some commercially available devices for eliminating static electricity follow:

· Humidifiers

· Grounding straps : conductive strips or straps connected to machine belts, pulleys, and containers connected to the ground.

· Conductive materials : conductive floor mats, bags, hose containers and container covers connected to the ground.

· Personnel protection : shoe straps, wrist straps, aprons, gloves, and clothes, conductive items used in conjunction with other devices to assure grounding of personnel.

i. Centrifuges

If a tabletop centrifuge is used, make certain that it is securely anchored in a location where its vibration will not cause bottles or equipment to fall. Centrifuge rotors shall be balanced each time they are used. Securely anchor and shield each unit against flying rotors. Regularly clean rotors and buckets with noncorrosive cleaning solutions.

Always close the centrifuge lid during operation, and do not leave the centrifuge until full operating speed is attained and the machine appears to be running safety without vibration. Stop the centrifuge immediately and check the load balances if vibration occurs. Check swing-out buckets for clearance and support.

j. Vacuum Pumps

If vacuum pumps are used with volatile substances, the input line to the pump shall be fitted with a cold trap to minimize the amount of volatiles that enter the pump and dissolve in the pump oil. The exhaust from evacuation of volatile, toxic, or corrosive materials shall be vented to an air exhaust system.

k. Drying Ovens and Furnaces

Electrically heated ovens are commonly used in the laboratory to remove water or other solvents from chemical samples and to dry laboratory glassware before its use. With the exception of vacuum drying ovens, these ovens rarely have any provision for preventing the discharge of the substances volatilized in them into the laboratory atmosphere. Thus, it should be assumed that these substances will escape into the laboratory atmosphere and could also be present in concentrations sufficient to form explosive mixtures with the air inside the oven.

Ovens should not be used to dry any chemical sample that has even moderate volatility and might pose a hazard because of acute or chronic toxicity unless special precautions have been taken to ensure continuous venting of the atmosphere inside the oven. Thus, most organic compounds should not be dried in a conventional laboratory oven.

Glassware that has been rinsed with an organic solvent should not be dried in conventional ovens. If such rinsing is necessary, the item should be rinsed again with distilled water before being placed in the oven.

Because of the possible formation of explosive mixtures by volatile substances and the air inside an oven, laboratory ovens should be constructed so that their heating elements (which may become extremely hot and their temperature controls (which may produce sparks) are physically separated from their interior atmospheres. Small household ovens and other similar devices do not meet this requirement and, consequently, should not be used in laboratories. Existing ovens that do not meet these requirements should have a sign attached to the oven door to warn workers that flammable materials should not be placed in that oven.

Mercury thermometers should not be used in drying ovens.

l. Refrigerators

The potential hazards posed by laboratory refrigerators are in many ways similar to those of laboratory drying ovens. Because there is almost never a satisfactory arrangement for continuously venting the interior atmosphere of a refrigerator, any vapors escaping from vessels placed in one will accumulate. Thus, the atmosphere in a refrigerator could contain an explosive mixture of air and the vapor of a flammable substance of a dangerously high concentration of the vapor of a toxic substance or both. (The problem of toxicity is aggravated by the practice of laboratory worker who place their faces inside the refrigerator while searching for a particular sample, thus ensuring the inhalation of some of the atmosphere from the refrigerator interior). The placement of highly toxic substances in a laboratory refrigerator should be avoided.

There should be no potential sources of electrical sparks on the inside of a laboratory refrigerator. Refrigerators used for the storage of flammable liquids should be a refrigerator designed by the manufacturer for the storage of flammables. All refrigerators used in laboratories should preferably be “flammable” storage or, if necessary, “explosion-proof”. If, however, there are existing laboratory refrigerators which are used to store materials which do not fall into these categories, a prominent sign should be affixed to the refrigerator (e.g., NO FLAMMABLES TO BE STORED IN THIS REFRIGERATOR).

Laboratory refrigerators should be placed against fire-resistant walls, have heavy-duty electrical cords, and preferably should be protected by their own circuit breaker.

Uncapped containers of chemicals should never be placed in a refrigerator. Containers of chemicals should be capped so as to achieve a seal that is both vapor tight and unlikely to permit a spill if the container is tipped over. Caps constructed from aluminum foil, corks, corks wrapped with aluminum foil, glass stoppers, or parafilm do not meet all of these criteria. The most satisfactory temporary seals are normally achieved by using containers that have screw-caps lined with either a conical polyethylene insert or a Teflon insert. The best containers for samples that are to be stored for longer periods of time are sealed, nitrogen-filled glass ampoules.

m. Heating Devices

Perhaps the most common electrical equipment found in a laboratory are the devices used to supply the heat needed to effect a reaction or a separation. The use of steam-heated devices rather than electrically heated devices is generally preferred whenever temperatures of 100C or less are required; these devices do not present shock or spark hazards. Electrically heated devices include hot plates, heating mantles and tapes, air baths, hot-tube furnaces, and hot-air guns. They are inherently much safer than burners as laboratory heat sources, however, such devices can still pose both electrical and fire hazards if used improperly.

· The actual heating element in any laboratory heating device should be enclosed in a glass, ceramic, or insulated metal case such that it is not possible for the laboratory worker (or some metallic conductor) to accidentally touch the wire carrying the electric current. This practice minimizes the hazards of electrical shock and of accidentally producing an electrical spark near a flammable liquid or vapor. This type of construction also diminishes the possibility that a flammable liquid or vapor will come in contact with the hot wire (whose temperature is frequently higher than the ignition temperature of many common solvents). If any heating device becomes so worn or damaged that its heating element is exposed, the device should either be discarded or repaired to correct the damage before it is again used in the laboratory.

· The temperature of many laboratory heating devices (e.g., heating mantels, air baths, and oil baths) is controlled by use of a variable autotransformer that supplies some fraction of the total line voltage (typically 110V) to the heating element of the device. If a variable transformer is improperly wired, the switch on it may or may not disconnect both wires of the output from the 110V line when in the off position. If a grounded three-prong plug is not used, each output line may be at a relatively high voltage (e.g., 110 and 110V) with respect to an electrical ground. Because of these possibilities, whenever a variable transformer whose wiring is not definitely known to be acceptable is used, it is best to assume that either of the output lines could be at a potential of 110V and capable of delivering a lethal electric shock.

· The cases of all variable autotransformers have numerous openings to allow for ventilation and some sparking may occur whenever the voltage adjustment knob is turned; laboratory workers should be careful to locate these devices where water and other chemicals cannot be spilled on them and where their movable contacts will not be exposed to flammable liquids or vapors. Specifically, variable autotransformers should be mounted on walls or vertical panels and outside of hoods; they should not be placed on laboratory bench tops, especially those inside of hoods.

· Whenever an electrical heating device is to be left unattended for a significant period of time, it is advisable that it be equipped with a temperature-sensing device that will turn off the electric power if the temperature of the heating device exceeds some preset limit. Similar control devices are available that will turn off the electric power if the flow of cooling water through a condenser is unexpectedly stopped. Such fail-safe devices, which can either be purchased or constructed by a qualified technician, prevent more serious problems (fires or explosions) that may arise if the temperature of an unattended reaction should increase significantly either because of a change in line voltage or because of accidental loss of reaction solvent. These devices are also valuable accessories for use with stills employed to purify reaction solvents because such stills are often left unattended for significant periods of time.

n. Assembling Apparatus

Operations that may generate airborne contaminants or that use flammable liquids or toxic, reactive, or odoriferous materials shall be conducted in a chemical fume hood or other appropriate containment enclosure. Whenever hazardous gases or fumes are likely to evolve, an appropriate trap, condenser, or scrubber shall be used to minimize release of material to the environment.

Apparatus should be set up well back from the edge of the work area. When assembled in a hood, apparatus should not obstruct the area. To avoid overflow, choose apparatus with at least 20 percent more capacity than would normally accommodate the volume of chemical planned for the operation. All parts of the apparatus shall be firmly balanced and supported. Tubing shall be fastened with wire or appropriate clamps.

Stirrer motors and vessels shall be positioned and secured to ensure proper alignment. Magnetic stirring is preferable, and nonsparking motors or air motors shall be used in any laboratory that might contain flammable vapors.

Funnels and other apparatus with stopcocks shall be firmly supported and oriented so that gravity will not loosen the stopcock plug. Use a retainer on the stopcock plug, and lubricate glass stopcocks. Do not lubricate Teflon stopcocks.

Include a vent in apparatus for chemicals that are to be heated, and place boiling stones in unstirred vessels. If a burner is to be used, distribute the heat with a ceramic-centered wire gauze. Insert a thermometer in heated liquids if dangerous exothermic decomposition is possible. This will provide a warning and may allow time to remove the heat and apply external cooling.

A pan under a reaction vessel or container will confine spilled liquids in the event of glass breakage.

If a hot plate is used, be sure that its temperature is less than the autoignition temperature of the chemicals likely to be released and that the temperature control device does not spark. Whenever possible, use controlled electrical heaters or steam in place of gas or alcohol burners.

3. The Laboratory Facility

a. Design: The laboratory facility must have:

1. An appropriate general ventilation system with air intakes and exhausts located so as to avoid re-entrainment of contaminated air.

2. Adequate, well-ventilated stockrooms/storerooms; and/or storage cabinets appropriate for chemicals being stored.

3. Laboratory chemical and biosafety hoods as required for work being done.

4. Other safety equipment including eyewash stations and emergency showers as required.

5. Arrangements for proper disposal of regulated waste. (consult the University Hazardous Waste Management Manual or call EHS at 656-1770)

b. Maintenance: Chemical hygiene-related equipment (fume hoods, chemical spill kits, storage cabinets, etc.) should undergo continuing appraisal by laboratory supervisors and be modified or replaced if inadequate.

c. Usage. The work conducted and its scale must be appropriate to the physical facilities available and, especially, to the quality of ventilation.

4. Chemical Procurement, Distribution, and Storage

a. Procurement

1. Avoid the purchase of unnecessary volumes of chemicals

2. Before a substance is received, information on proper handling, storage, and disposal should be known to those who will be involved.

3. No container should be accepted without an adequate identifying label.

4. All substances should be received in a central location.

5. If a Material Safety Data Sheet has been sent with the package, it should be distributed to the user. No hazardous chemical should be used unless the material safety data sheet is available to the user.

6. If a material safety data sheet is needed, request one from the manufacturer or call the Office of Environmental Health and Safety at 656-7554 or fax the request to 656-7630. (See Appendix A for forms)

b. Stockrooms/storerooms

Where stockrooms and storerooms exist, these conditions apply:

· Toxic substances should be segregated in a well identified area with local exhaust ventilation.

· Stored chemicals should be inspection periodically (at least quarterly) for replacement, deterioration, and container integrity. Areas of stockrooms where chemicals which may become dangerous or form dangerous by-products should be inspected monthly.

· They should not be used as preparation or re-packaging areas,

· They should be opened during normal working hours,

· They must be controlled by a manager.

c. Distribution

· When chemicals are hand carried, the container should be placed in an outside container or acid-carrying bucket to protect against breakage and spillage. Secondary containment is especially important when chemicals are moved in public areas, such as hallways or elevators.

· When they are transported on a wheeled cart, the cart should be stable under the load and have wheels large enough to negotiate uneven surfaces (such as expansion joints and floor drain depressions) without tipping or stopping suddenly.

· Freight-only elevators should be used if possible.

· Provisions for the safe transport of small quantities of flammable liquids include the use of rugged pressure-resistant, non-venting containers and elimination of potential ignition sources.

· All chemical containers being transported shall have labels identifying the contents and associated hazards.

d. Shipment: Hazardous materials shipments are subject to the regulations of the U.S.

Department Of Transportation (D.O.T.) until the containers are opened for use. Packages of hazardous materials may not be left unattended on a loading dock. Special DOT training is required for those persons who package and ship hazardous materials.

e. Laboratory storage

· All incoming containers of hazardous chemicals must have appropriate labels that are not removed or defaced.

· Each container should be labeled as to the date it was received and the date it was opened as some chemicals form peroxides or other unstable products when stored for relatively short periods of time. Refer to Appendix F for a list of common laboratory chemicals that may become unstable with time.

· Amounts permitted should be as small as practical. Storage on bench tops and in chemical hoods is not permitted.

· Chemicals in the laboratory should be segregated (see Appendix C) and safely stored. Acids, bases, corrosives, oxidizers, and toxics should be separated from one another by space and secondary containment.

· Flammable liquids should be kept in NFPA-approved flammable liquid storage cabinets (see Appendix C).

· Absolute ethyl alcohol must be stored in locked cabinets.

· Exposure to heat or direct sunlight should be avoided.

· Chemicals should not be stored under a sink.

· Strong acids or bases or unsealed toxic chemicals can be stored in ventilated base of chemical fume hoods but separation should be provided to prevent cross-mixing. Mild acids and bases such as citric acid and sodium carbonate may be stored with other low-hazard reagents.

· Open shelves for low-hazard, stable chemicals should be located out of normally traveled routes. The higher shelves should be used for smaller containers of the lowest hazard chemicals.

· Lecture bottles and full-sized cylinders of compressed gases should be stored in a ventilated storage area (see "Standards for Handling Compressed Gas Cylinders", Section V).

· Gas cylinders must be secured (strapped or chained). The area should have adequate room ventilation to remove leaking gas and easy accessibility for periodic exchange of cylinders. (See Section V for additional information on compressed cylinders including size and quantities allowed in laboratories)

f. Inventory: The laboratory or area supervisor, or his/her designee, must maintain a list of all hazardous chemicals known to be present in each laboratory or area and keep the list updated. Unneeded items should be discarded or identified as surplus (Refer to your "Hazardous Waste Management" Manual). The inventory must identify each hazardous chemical by the primary name on the label, manufacturer or distributor of the chemical, the Chemical Abstract Number (CAS), the quantity, and an indication of the availability of a Material Safety Data Sheet (MSDS) for that chemical. The inventory should be kept in a readily accessible location in a suitable format such as that illustrated in Appendix B. A hazardous chemicals inventory must be submitted to the Chemical Hygiene Officer (Naomi Kelly) by the 15^th of February of each year.

5. Housekeeping, Maintenance, and Inspections

a. Housekeeping

· In the laboratory and elsewhere, keeping things clean and organized helps provide a safer environment.

Poor housekeeping increases the likelihood that an accident will occur and increases the total potential damage when accidents do occur.

· Keep drawers and cabinet doors closed and electrical cords off the floor to avoid tripping hazards.

· Keep aisles clear of obstacles such as boxes, chemical containers, and other storage items that might be put there even temporarily.

· Avoid slipping hazards by cleaning up spilled liquids promptly and keeping the floor clean.

· Never block or even partially block the path to an exit or to safety equipment, such as a fire extinguisher or safety shower.

· Put ordinary wastepaper in a wastepaper basket separate from chemical wastes or biohazardous wastes.

· Broken glass and other sharp items shall be disposed of in rigid, puncture-resistant containers to protect persons collecting the waste materials. These containers must be properly labeled. They should never be filled to the point where any material is protruding, or so that the weight of the carton would present a lifting hazard. Check to ensure that the container is intact and sound before attempting to lift. Securely tape the container before depositing in the dumpster. Ensure that only clean (no contaminated) glass is deposited to these containers.

· Even needles and syringes that are not contaminated should be placed in biohazard sharps containers provided by EHS, so that they may be disposed of safely.

· When discarding empty boxes or other containers bearing hazardous materials labels, the label shall be defaced or removed before disposal.

· Contaminated boxes or other containers shall not be disposed of in the regular trash.

b. Inspections

· Housekeeping and chemical hygiene inspections should be performed by researchers, departmental safety personnel, or lab managers at least monthly for units that have frequent personnel changes and quarterly for others; informal inspections should be continual. (See Appendix I for an inspection checklist which can be used as a guide in performing inspections)

· Eye wash stations must be inspected weekly. Inspection should include flushing each unit for a minimum of 3 minutes. Safety shower units should be inspected weekly, but must be inspected at least monthly. Safety showers should always be inspected immediately prior to using any highly corrosive chemical. Inspection of safety showers should include flushing each unit for 1-2 minutes or until water runs clear. Containers should be used to collect water from flushing of lines. A 55 gal. container on a wheeled-type canister with spout at the bottom is the best setup. Flushing water can be collected and released over a floor drain or outside. These inspections should be recorded on inspection tags on the equipment or inspection forms posted at or near the stations and should include the last date of inspection and initials of the inspector. If recording on inspection tags, ensure that they are not attached to the equipment in a position where they will be wet if the shower is activated.

c. Passageways: Stairways and hallways should not be used as storage areas. Access to exits, emergency equipment, and utility controls should never be blocked.

6. Personal Protective Apparel and Equipment (PPE)

Protective apparel compatible with the required degree of protection for substances being handled (follow labeling requirements and refer to MSDS). Users must be trained in the proper selection, use, cleaning, and maintenance of personal protective equipment (PPE). (Refer to Appendix H for additional information on PPE)

a. Eye and Face Protection

· Safety glasses must be worn by everyone, including visitors, who enters an area where chemicals are stored, handled or used. They must also be worn in areas where machines or operations create a flying particle/object hazard; areas where processes can produce aerosols; where hot liquids or molten metals are handled; gas or electric welding in done; cyrogenic materials are handled; explosive materials are handled, or injurious radiation is present.

· Regular eyeglasses and contact lenses do not provide adequate eye protection.

· For laboratory visitors, safety glasses with side shields are adequate. For laboratory workers, where the danger of chemical splash exists, splash goggles are required.

· For more hazardous operations, a combination of safety goggles or glasses and a faceshield should be used (i.e., handling corrosive chemicals, cyrogenic or hot liquids, where flying particles/objects are a potential hazard).

· Design, construction, tests, and use of eye and face protection purchased prior to July 5, 1994, must be in accordance with ANSI Z87.1-1968 USA Standard Practice for Occupational and Educational Eye and Face Protection. Protective eye and face devices purchased after July 5, 1994, must comply with ANSI Z87.1-1989, American National Standard Practice for Occupational and Educational Eye and Face Protection. To ensure that the protective eye and face devices you are using are approved by OSHA, look for Z87.1 stamped on the glasses. Be sure that all future purchases of eye and face protection are Z87.1-1989 ANSI approved.

See Appendix H for more information on safety eyewear, including information on University contract for prescription safety glasses.

b. Laboratory Coats/protective clothing

· Must be worn in areas where chemicals are handled or used (scrubs or similar apparel that will provide equivalent protection may be worn)

· Should be worn outside of laboratories only when transporting hazardous materials from lab to lab, stockroom, etc.

· They must not be worn in public or administrative areas of a building such as the offices, cafeteria/vending areas, lounges, etc.

· Are intended to prevent contact with the minor chemical splashes and spills encountered in a lab.

· Do not significantly resist penetration by organic liquids—intended for incidental splash protection

· Fabric should be selected by the laboratory activity—cotton or flame retardant lab coats should be used in laboratories where open flame is used or where large quantities of flammable chemicals are used. Polyester blends provide more chemical resistance, but tend to melt to your skin if they catch fire.

· Should be removed immediately when they become contaminated.

· Front opening laboratory coats should always be worn closed.

· When handling corrosive or irritating liquids, chemically-resistant aprons and sleeve covers provide better protection but can complicate injuries in the event of a fire.

· Home laundering of laboratory coats and other protective clothing is not permitted. A washer and dryer are available in Room 71 of the P&AS Building. (See Appendix M for info on Laundry Facility)

· Should be laundered routinely to prevent contamination from accumulation.

b. Hand Protection

· Hand protection is required for employees whose hands are exposed to hazards such as those from skin absorption of harmful substances; damage of skin by contact with a hazardous material; severe cuts or lacerations; severe abrasions; punctures; chemical burns; thermal burns; and harmful temperature extremes, i.e., cryogenic liquids).

· Select proper glove material based on the substance being handled, the particular hazard involved, and their suitability for the operation being conducted.

· Inspect gloves for discoloration, punctures, and tears before each use. If the gloves are to be reused, wash them before removal and replace them periodically.

· Always wash hands after removing gloves.

*See Appendix H for additional information

c. Respiratory Protection

· The Office of Environmental Health and Safety provides respiratory protection for situations where engineering and administrative controls cannot feasibly contain a respiratory hazard.