Guide to the safe handling of solvents in a bituminous ... - Aapaq.org

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• Ceiling Exposure Level (CEILING): The maximum airborneconcentration of a biological or chemical agent to which a worker maybe exposed at any time;• SKIN: This notation indicates that direct or airborne contact with theproduct may result in significant absorption of the product through theskin, mucous membranes or eyes. Inclusion of this notation isintended to suggest that preventative action be taken againstabsorption of the agent through these routes of entry;• Threshold Limit Values (TLVs) are exposure guidelines developedby the American Conference of Governmental Industrial Hygienists(ACGIH). They are not legally enforceable, but because they areupdated regularly, they represent good professional practice. Theyare expressed as follows: TLV-TWA (Threshold Limit Value - Time-Weighted Average):The time-weighted average concentration for a normal eight-hourwork day and a 40-hour work week, to which nearly all workersmay be repeatedly exposed, day after day, without adverse effect; TLV-STEL (Threshold Limit Value - Short Term ExposureLimit): A 15 minute time-weighted average exposure whichshould not be exceeded at any time during a work day even if theeight-hour TWA is within the TLV. Exposures at the STEL shouldnot be repeated more than four times a day and there should be atleast 60 minutes between successive exposures at the STEL; TLV-C (Threshold Limit Value - Ceiling): the concentration thatshould not be exceeded during any part of the working exposure.f/cc - fibres per cubic centimetre of air;FDA - US Food and Drug Administration flammable limits - See "ExplosiveLimits";flashback - occurs when the flame in a gas torch bums back into the torchor hose; this is often accompanied by a hissing or squealing sound, and apointed or smoky flame;flash point - the lowest temperature at which a flame will propagatethrough the vapour of a combustible material to the liquid surface. It isdetermined by the vapour pressure of the liquid, since only when asufficiently high vapour concentration is reached, can it supportcombustion. It should be noted that the source of ignition need not be anopen flame, but could equally be, for example, the surface of a hot plate, ora steam pipe;92
freezing point - the temperature at which a liquid becomes a solid, atnormal atmospheric pressure;hazard codes - see UN hazard codes;hazardous decomposition products - formed when a materialdecomposes (breaks down) because it is unstable, or reacts with materialssuch as water or oxygen in air;hazardous polymerisation - polymerisation is a process of forming apolymer by combining large numbers of chemical units or monomers intolong chains (polyethylene from ethylene or polystyrene from styrene).Uncontrolled polymerisation can be extremely hazardous. Somepolymerisation processes can release considerable heat or can beexplosive;hematopoietic agent - chemical which interferes with the blood system bydecreasing the oxygen-carrying ability of haemoglobin. This can lead tocyanosis and unconsciousness. Carbon monoxide is one such agent,familiar to smokers;hepatotoxin - chemical capable of causing liver damage;hypoxia - a condition defined by a low supply of oxygen;inhibitor - material which is added to a chemical to prevent an unwantedreaction. For example, BHT (2,6-di-t-butyl-p-cresol) is often added totetrahydrofuran to prevent potentially dangerous polymerisation;ingestion - means taking a material into the body by mouth (swallowing);inhalation - means taking a material into the body by breathing it in;IARC - International Agency for Research in Cancer. The IARC home pageis at http://www.iarc.fr/;irritant - chemical which may cause reversible inflammation on contact;LC5O (Lethal Concentration 50) - the concentration of a chemical whichkills 50% of a sample population. This measure is generally used whenexposure to a chemical is through the animal breathing it in, while theLD5O is the measure generally used when exposure is by swallowing,through skin contact, or by injection;LD50 (Lethal Dose 50) - the dose of a chemical which kills 50% of asample population. In full reporting, the dose, treatment and observationperiod should be given. Further, LD5O, LC5O, ED5O and similar figuresare strictly only comparable when the age, sex and nutritional state of theanimals is specified. Nevertheless, such values are widely reported andused as an effective measure of the potential toxicity of chemicals;LDLO - Lethal Dose Low;LEL (Lower Explosive Limit) - See Explosive Limits;93
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Guide to the safe handling ofsolven
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Sabita DVD SeriesDVD100DVD200DVD300
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CONTENTS1. Introduction2. Solvent s
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• The use of High Performance Liq
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2. Solvent specific test methods2.1
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• A mass balance requires a tempe
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*Jojoba oil (pronounced “ho-HO-ba
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properties of the recovered binder.
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Table 1. Coefficients of variationM
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• Temperature - Although binder h
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• Density - In general, a solvent
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2.5. The determination of the softe
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4. Evaluating the cost-effectivenes
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6. Conclusions and recommendationsT
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absorptive limestone). In this way
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13. Peterson, GD, Davison, RR, Glov
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in a location close to where the pr
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product identifier (product name);
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eye wash bottles and safety showers
Page 41 and 42: • reaction to naturally-occurring
Page 43 and 44: consulting the MSDS for the product
Page 45 and 46: those which could compromise an ind
Page 47 and 48: • Reactive chemicals May be sensi
Page 49 and 50: The following guidelines should be
Page 51 and 52: mercury air concentrations. If a la
Page 53 and 54: Be prepared to repeat the process i
Page 55 and 56: Leaking regulators, cylinder valves
Page 57 and 58: Peroxide-forming (e.g. ether) and e
Page 59 and 60: • Direct connections: Direct conn
Page 61 and 62: This guide is available on the UK H
Page 63 and 64: Factors that can increase the risk
Page 65 and 66: containers that may be contaminated
Page 67 and 68: Record each run in a logbook: keep
Page 69 and 70: • Gas chromatographs (GC): Gas ch
Page 71 and 72: Locate and know how to test and ope
Page 73 and 74: Do not remove a dressing that has b
Page 75 and 76: As soon as the flames are extinguis
Page 77 and 78: Appendix B - Recommendations for so
Page 79 and 80: • All packages in storage should
Page 81 and 82: Table 2.Examples of incompatible co
Page 83 and 84: Table 3. Suggested segregation for
Page 85 and 86: • Keep picric acid solutions wet
Page 87 and 88: peroxides. The radius shall be meas
Page 89 and 90: acute health effect - an effect tha
Page 91: 8 Corrosive; 9 Miscellaneous.ED50 (
Page 95 and 96: airborne substance, averaged over a
Page 97 and 98: teratogen - chemical which may caus
Page 99 and 100: • Many of the occupation exposure
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