Clean agent systems

Clean agent systems can also be used for explosion prevention and suppression where flammable materials are confined. Clean agent fire extinguishing systems are used primarily to protect hazards that are in enclosures or equipment enclosures. Some typical hazards that could be protected by clean agents are ... 

An example of a clean agent system is shown in Figure 7-33. 

The acceptance test of a clean agent system consists of ... 

The enclosure for the clean agent system should be examined for openings and tested to ensure that the agent concentration can be maintained. Currently, the preferred method is using a blower door fan unit and smoke pencil. 

NFPA 2001 should be followed for the acceptance testing of clean agent systems. 

Clean agent systems should be visually inspected semiannually. The inspection should consist of verifying the agent quantity and pressure are within allowable range. 

This hypothesis can be illustrated, for example, on cooling lubricant emulsions as well as water-based coating and cleaning agent systems. 

Clean Agent Systems Critical computer processing facihties... 

All metal parts exposed to the room are made of stainless steel and motors and transmissions are IP 65 to withstand the eflfect of the cleaning agents. The design also takes into account the special considerations necessary for food processing machinery with regards to easy accessibility to all parts and the lack of corners, edges, pockets or other food traps , so that the mechanical system can be easily cleaned. 

Clean agent fire extinguishing systems are used primarily to protect enclosures. Clean agents can be used to protect enclosures containing ... 

The design of clean agent fire protection systems should follow NFPA 2001. Key design features include ... 

Where water supplies are inadequate for conventional firefighting and foam making, automatically activated fixed clean agent or CO2 systems may be considered for seal fire protection. The agent should be discharged into the seal area below the secondary seal. Fire detection options for these automatic systems include reusable thermal wires and pneumatic tube devices. Thermal wire is typically the more economical choice. 

Clean Agent Visual inspection Pneumatic test of piping Flow test of the piping Fnclosure integrity test Flectrical systems operation properly Discharge test 2001... 

NFPA 750—Standard on Water Mist Fire Protection System NFPA 2001 —Standard on Clean Agent Fire Extinguishing Systems... 

Some people find the effects of solvents on the nervous system desirable and purposely inhale (sniff) solvents to induce a form of intoxication. In the United States approximately 15% of high school students have tried solvent inhalation at least once. Solvents suitable for inhalation and abuse are common in the home. Home products that may contain solvents include paints, paint remover, varnishes, adhesives, glues, degreasing and cleaning agents, dyes, printing ink, floor and shoe polishes, waxes, pesticides, drugs, cosmetics, and fuels, just to name a few (Table 11.1). 

The home, workplace, and general environment each represent unique places of possible exposure to neuroactive agents (Table 15.5). The home contains a range of compounds that affect the nervous system caffeine in coffee and tea, alcohol, medicines, pesticides, cleaning agents, paints, and solvents to name just a few. Compounds such a lead or pesticides can be carried into the home on shoes or bare... 

Probably the greatest concern in the workplaces is solvent exposure from cleaning agents or chemical processes. Farmers and pesticide workers can also be exposed to compounds clearly designed to affect the nervous system. The outdoor environment can contain elevated levels of a number of persistent chemicals that can adversely affect the nervous system, such as lead, mercury, and chlorinated pesticides. 

---