General Precautions

If any one of the following conditions is encountered, either company personnel responsible for maintaining the transport vehicle fleet, the compressed gas supplier or manufacturer, and/or the vehicle owner, should be immediately contacted for assistance and instructions as appropriate  

No attempt should be made to correct leaks at unions or other fittings in a transfer line with a wrench while the line is under pressure. Never break a hose coupling which is under pressure. 

Personnel should wear protective gloves to prevent contact with liquids during loading and unloading. Liquefied gases vaporize rapidly upon release at normal temperatures and atmospheric pressure. Contact with such liquids by skin surfaces and subsequent evaporation causes severe burns (frostbite). When large quantities of liquid are involved, deep and severe freezing of the body area in contact with the liquid results. 

Frequent inspection of loading and unloading hoses, piping, and fittings for wear, deterioration, or abuse is recommended. 

Single-unit tank cars for transporting anhydrous ammonia may be of the Class 105, 112, or 114 type and must have head shields. An exception to this is that Class 105 type tank cars of not greater than 18 500 gallon (70 m ) capacity and built before September 1, 1981, do not require head shields. 

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Table 5.46 General precautions with mineral oils...

Table 5.57 General precautions with synthetic resins...

Table 8.3 General precautions with cryogenic materials...

Table 9.3 General precautions for handling compressed gases...

The following safety measures supplement the general precautions listed in Table 9.3 ... 

General precautions, disposal methods and statutory controls. 

Table 15.15 General precautions to be followed for the transfer of dangerous liquids in bulk ...

General precautions should be observed when handling ferric sulfate, such as wearing goggles and dust masks, and areas of the body that come in contact with the dust or vapor should be washed promptly. 

People often lack respect for the power in compressed air because air is so common, and it is viewed as harmless. At sufficient pressures, compressed air can cause damage if an accident occurred. To minimize the hazards of working with compressed air, all safety precautions should be followed closely. Reasons for general precautions follow. 

It is important that health factors are kept in proper perspective. What hazards there may be in the case of oil products are avoided or minimized by simple precautions. For work involving lubricants (including cutting fluids and process oils) the following general precautions are recommended ... 

Details of the appointed persons must be entered in Register F31. Also, such persons must be instructed in the requirements of the Operations at Unfenced Machinery Regulations 1938 and issued with the precautionary leaflet F2487. General precautions to observe include ... 

General precautions for each medication that has been used for smoking cessation are listed in the sections describing each medication. All FDA-approved first-line medications for smoking cessation have a relatively good safety profile. Consensus opinions on the safety of the various medications for persons with cardiovascular disease, other medical conditions, and pregnancy are beyond the scope of this chapter but can be found elsewhere (Society for Research on Nicotine and Tobacco 2003). 

A whole range of precautions may be based on the principles summarized earlier. However, general precautions, applicable to the majority of work situations, are listed in Table 5.13, many of which are included in legal requirements. For example, in the UK The Fire Precautions Act 1971 specifies requirements for fire resistance of surfaces and building structure, assessment of risk, means of escape, means for giving warning, firefighting equipment, and fire instruction and drills. 

In addition to the general precautions for compressed gases in Table 8.3, the following control measures should be considered for acetylene ... 

Detailed precautions for handling radioactive substances will be dictated by the nature and quantity of isotope and the likely level of exposure. Thus for some materials laboratory coats and gloves may be adequate for others a fully enclosed suit and respirator may be more appropriate. Some general precautions are listed in Table 10.6. 

Robins, M. J. et al., J. Amer. Chem. Soc., 1976, 89, 7389 (footnote 24) Contact of the extremely reactive compound with hydrogen-containing solvents or conventional plastics tubing, even at —80°C, is undesirable [1], Fully halogenated solvents are preferred, and some general precautions are described [2], Violent explosions have occurred on introducing the gas directly into methanol [3],... 

Addition of about 100 mg of hexachlorocyclotriphosphazine (also containing some phenoxylated products) to 0.5 ml of DMSO in an NMR tube led to an exothermic reaction which ejected the tube contents. General precautions are suggested. 

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