Chemical Hygiene Plan - Queensborough Community College ...

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of cryogenic fluids from open containers must occur below chest level of the person pouring the liquid. • Only conduct such operations in well-ventilated areas, such as the laboratory, to prevent possible gas or vapor accumulation that may produce an oxygen-deficient atmosphere and lead to asphyxiation. If this is not possible, an oxygen meter must be installed. • Equipment and systems designed for the storage, transfer, and dispensing of cryogenic fluids need to be constructed of materials compatible with the products being handled and the temperatures encountered. • All cryogenic systems including piping must be equipped with pressure relief devices to prevent excessive pressure build-up. Pressure reliefs must be directed to a safe location. It should be noted that two closed valves in a line form a closed system. The vacuum insulation jacket should also be protected by an over pressure device if the service is below 77 degrees Kelvin. In the event a pressure relief device fails, do not attempt to remove the blockage; instead, call EHS. • The caps of liquid nitrogen dewars are designed to fit snugly to contain the liquid nitrogen, but also allow the periodic venting that will occur to prevent an overpressurization of the vessel. Do not ever attempt to seal the caps of liquid nitrogen dewars. Doing so can present a significant hazard of overpressurization that could rupture the container and cause splashes of liquid nitrogen and, depending on the quantity of liquid nitrogen that may get spilled, cause an oxygen deficient atmosphere within a laboratory due to a sudden release and vaporization of the liquid nitrogen. • If liquid nitrogen or helium traps are used to remove condensable gas impurities from a vacuum system that may be closed off by valves, the condensed gases will be released when the trap warms up. Adequate means for relieving resultant build-up of pressure must be provided. 4) First Aid Workers will rarely, if ever, come into contact with cryogenic fluids if proper handling procedures are used. In the unlikely event of contact with a cryogenic liquid or gas, a contact “burn” may occur. The skin or eye tissue will freeze. The recommended emergency treatment is as follows: • If the cryogenic fluid comes in contact with the skin or eyes, flush the affected area with generous quantities of cold water. Never use dry heat. Splashes on bare skin cause a stinging sensation, but, in general, are not harmful. • If clothing becomes soaked with liquid, it should be removed as quickly as possible and the affected area should be flooded with water as above. Where clothing has 137
frozen to the underlying skin, cold water should be poured on the area, but no attempt should be made to remove the clothing until it is completely free. • Contact Public Safety for additional treatment if necessary. • Complete an Injury/Illness Report. 22.10.2 Cryogenic <strong>Chemical</strong> Specific Information A) Liquid Helium Liquid helium must be transferred via helium pressurization in properly designed transfer lines. A major safety hazard may occur if liquid helium comes in contact with air. Air solidifies in contact with liquid helium, and precautions must be taken when transferring liquid helium from one vessel to another or when venting. Over-pressurization and rupture of the container may result. All liquid helium containers must be equipped with a pressure-relief device. The latent heat of vaporization of liquid helium is extremely low (20.5 J/gm); therefore, small heat leaks can cause rapid pressure rises. B) Liquid Nitrogen Since the boiling point of liquid nitrogen is below that of liquid oxygen, it is possible for oxygen to condense on any surface cooled by liquid nitrogen. If the system is subsequently closed and the liquid nitrogen removed, the evaporation of the condensed oxygen may over-pressurize the equipment or cause a chemical explosion if exposed to combustible materials, e.g., the oil in a rotary vacuum pump. In addition, if the mixture is exposed to radiation, ozone is formed, which freezes out as ice and is very unstable. An explosion can result if this ice is disturbed. For this reason, air should not be admitted to enclosed equipment that is below the boiling point of oxygen unless specifically required by a written procedure. Any transfer operations involving open containers such as wide-mouth Dewars must be conducted slowly to minimize boiling and splashing of liquid nitrogen. The transfer of liquid nitrogen from open containers must occur below chest level of the person pouring the liquid. C) Liquid Hydrogen • Anyone proposing the use of liquid hydrogen must first obtain prior approval from their EHS Office. • Because of its wide flammability range and ease of ignition, special safety measures must be invoked when using liquid hydrogen. • Liquid hydrogen must be transferred by helium pressurization in properly designed transfer lines in order to avoid contact with air. Properly constructed and certified vacuum insulated transfer lines should be used. • Only trained personnel familiar with liquid hydrogen properties, equipment, and operating procedures are permitted to perform transfer operations. Transfer lines in 138
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LABORATORY SAFETY AND CHEMICAL HYGI
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TABLE OF CONTENTS Purpose..........
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Visiting Scientists and Other Simil
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Cryogenic Safety...................
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PURPOSE OF THIS MANUAL The main pur
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The OSHA Laboratory Standard requir
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12. Maintain records and make them
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3. Keep the Department Chairperson,
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6. Before an extremely hazardous su
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• Laboratories can use “price t
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shipment of improperly labeled prod
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• Do not smell or taste chemicals
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5.3 Inhalation Inhalation of chemic
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Symptoms of skin exposure to chemic
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5.10 Toxic Effects Toxic effects ar
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• All chemical containers MUST be
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· Peroxidizable materials (aldehyd
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6.4 Transporting Chemicals When tra
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liquids not in use should be kept i
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7. An inside storage room meeting a
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VII. CHEMICAL HAZARDS Chemicals can
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• Metal Picrate Salts • 2,4-Din
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7.5 Dangerous When Wet “Dangerous
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ways to remove them if discovered.
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1(800) 222-1222. If possible, bring
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• Prior approval - Before anyone
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everyone in the laboratory is aware
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particularly hazardous substances
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8.7 Reproductive Toxins The OSHA La
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9.1 Chemical Fume Hoods Fume hoods
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inspected, and initials of the insp
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9.4 Biological Safety Cabinet Certi
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• Plan and prepare for your work
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The topic of glove boxes can be con
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10.1 Standard Operating Procedures
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paper, boxes, plastics, etc.) withi
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10.6 Working Alone In Appendix A of
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• The nature of the experiment in
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Additionally, as with installation
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• Record keeping requirements •
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Prescription Safety Eyewear OSHA re
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different glove types. Different ma
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• Natural Rubber Latex*** - Resis
Page 87 and 88: The use of all types of respiratory
Page 89 and 90: your College’s Emergency Procedur
Page 91 and 92: • Check all pressure, temperature
Page 93 and 94: If you have been trained and it is
Page 95 and 96: 4) Try to prevent spilled chemicals
Page 97 and 98: their use. Colleges and departments
Page 99 and 100: Once outside, notify emergency resp
Page 101 and 102: 5) Keep flushing for at least 15 mi
Page 103 and 104: 3. The New York City Rules and Regu
Page 105 and 106: 6. Selection of Hazardous Waste Con
Page 107 and 108: XV. PESTICIDES A pesticide is defin
Page 109 and 110: 16.1 Institutional Biosafety Commit
Page 111 and 112: the College’s IACUC must ensure t
Page 113 and 114: • Materials derived from animals
Page 115 and 116: the same regulations and laws; and
Page 117 and 118: problems and compliance issues, and
Page 119 and 120: from any given amperage, the table
Page 121 and 122: extension cords, see the Consumer P
Page 123 and 124: "reset" buttons. They are found on
Page 125 and 126: properly replaced before use. Movin
Page 127 and 128: 22.4.1 Handling Compressed Gas Cyli
Page 129 and 130: materials for connections; toxic an
Page 131 and 132: Therefore, when counting an “equa
Page 133 and 134: • If toxic, flammable, or otherwi
Page 135 and 136: 22.9 Centrifuges Some general safet
Page 137: significant thrust may be experienc
Page 141 and 142: • Allow the system to cool and th
Page 143 and 144: • Cover the tubing with cloth and
Page 145 and 146: • Apparatus, equipment, or chemic
Page 147 and 148: • Seat height—be sure lab chair
Page 149 and 150: someone else in your department or
Page 151 and 152: 23.3 Cylinders • Before moving to
Page 153 and 154: EHS roles/responsibilities: • Pro
Page 155 and 156: and that there are no dents or hole
Page 157 and 158: • The contents of the Laboratory
Page 159 and 160: Training Manuals and Booklets P.I.s
Page 161 and 162: • Where airborne exposure monitor
Page 163 and 164: than one year's employment must be
Page 165 and 166: APPENDIX B: SITE MAP 164
Page 167 and 168: APPENDIX D: OSHA TOXIC SUBSTANCES L
Page 169 and 170: APPENDIX F: SAMPLE LAB INSPECTION F
Page 171 and 172: APPENDIX G: CHEMICAL COMPATIBILITY
Page 173 and 174: peroxide, Nitric acid, Sodium perox
Page 175 and 176: Sodium peroxide Sulfides Sulfuric a
Page 177 and 178: APPENDIX I: FDNY REGULATIONS GOVERN
Page 179 and 180: 41 and the total quantity, excludin
Page 181 and 182: Dimethyl sulfoxide 1 Natural rubber
Page 183 and 184: Pump oil Butyl rubber Silane based
Page 185 and 186: APPENDIX L: HOW TO UNDERSTAND MATER
Page 187 and 188: Percent Volatile by Volume: Describ
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Stability: Unstable indicates that
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APPENDIX M: HAZARDS OF FUNCTIONAL G
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Examples: Butane Cyclohexene Cyclop
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• Azides of nonmetals, such as th
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• The routes of exposure are inha
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• Many of the common solvents can
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ORGANIC PEROXIDES • Compounds con
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• High doses may produce somnolen
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APPENDIX O:LASER REGISTRATION FORM
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APPENDIX Q : APPENDIX OF REFERENCE
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Biological Effects and Exposure Cri
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Dental X-Ray Protection, National C
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Gibson, David E., Printmaking, Occu
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Laboratory Decontamination and Carc
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Natural Background Radiation In The
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Public Radiation Exposure from Nucl
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Materials, The School of the Art In
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Video Display Terminals, Bell Labor
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