Flammability code

Storage tanks should have temperature monitoring with alarms to detect the onset of reactions. The design should comply with all appHcable industry, federal, and local codes for a class IB flammable Hquid. The storage temperature should be below 37.8°C. Storage should be under an atmosphere of dry nitrogen and should vent vapors from the tank to a scmbber or flare. 

Flammability. Plastic foams are organic ia aature and, therefore, are combustible. They vary ia their respoase to small sources of ignitioa because of composition and/or additives (255). AH plastic foams should be handled, transported, and used according to manufacturers recommendations as weU as appHcable local and national codes and regulations. 

U.S. Department of Transportation classification flammable Hquid, hazard label 3.3 DOT/UN /Na shipping number 2521, flammable Hquid. Transport by sea IMDG-code class 3.3, p. 3333, emergency sheet 3—06. Transport by rail and road RID/ADR class 3 Rn 301-31c. 

Shipping and Storage. Phosphoms(V) sulfide is stored and shipped in 208-L (55-gal) dmms containing 250 kg of product, portable closed aluminum bins containing 1800—3400-kg net weight, and railcars. P4S q is classified as a flammable soHd having the international shipping code of UN No. 1340. 

Each plant or laboratory should adopt definite rules and procedures for electrical iastahations and work. All iastahations should be ia accordance with the National Electrical Code (NEC) for the type of ha2ard, eg. Class I flammable gas or vapor Class II organic, metallic, or conductive dusts and Class III combustible fibers and the degree of process containment, eg. Division 1 open and Division 2 closed (67). Regardless of the flammabiUty of the materials ia the iastaHed operations, changes ia procedure involving use of such materials often occur, sometimes without concurrent alteration of the electrical iastaHation. 

R. P. Benedetti, Flammable and Combustible Tiquids Code Handbook, Quincy, Mass., 5th ed., 1994. 

Spray Finishing Using Flammable and Combustible Materials, Code No. 33, National Fire Protection Association (NFPA), Quincy, Mass., 1989. 

Silver-brazed joints are used when temperature or the combination of temperature and pressure is beyond the range of soldered joints. They are also more reliable in the event of plant fires and are more resistant to vibration. If they are used for fluids that are flammable, toxic, or damaging to human tissue, appropriate safeguarding is required by the code. There are OSHA regulations governing the use of silver brazing alloys containing cadmium and other toxic materials. 

The use of high-silicon iron in flammable-fluid service or in Cate-goiy M fluid seivdce is prohibited by the code. 

Volume 1 of National Fire Codes (National Fire Protection Association, Quincy, Massachusetts) contains recommendations (Code 30) for venting, drainage, and dike construction of tanks for flammable liquids. 

Identification of health hazard. Golor code Blue Identification of flammability. Golor code Red Identification of reactivity (stability). Golor code Yellow... 

NFPA 30 and API Standard 2000 provide gmdance for design of overpressure protec tion involving storage tanks that operate at or near atmospheric pressure. In particular, NFPA 30 focuses on flammability issues, while API 2000 addresses both pressure and vacuum requirements. The ASME code (Sections I and TII) and API RP 520 are the primaiy references for pressure rehef device sizing requirements. 

Safety Considerations Design and location of storage tanks, vents, piping, and connections are specified by state fire marshals, underwriters codes, and local ordinances. In NFPA 30, Flammable and Combustible Liquids Code, 1993 (published by the National Fire Protection Association, Quincy, Mass.), liquid petroleum fuels are classified as follows for safety in handhng ... 

While some video display screens such as liquid crystal, gas plasma or vacuum fluorescent displays do not present the same charged screen hazards as CRTs, this does not imply that they are safe for use in hazardous locations. This requires special design and certification for use with a given flammable atmosphere. Non-certified equipment used in locations classified as hazardous under Article 500 of NFPA 70 National Electrical Code require a purged or pressurized enclosure to control ignition hazards as described in NFPA 496 Standard for Purged and Pressurized Enclosures for Electrical Equipment. The screen in this case is located behind a window in the enclosure. 

Preliminary minimum distances Liquid oxygen Liquefied flammable gases Liquids stored at ambient temperature and pressure A Code of Practice for the Bulk Storage of Liquid Oxygen at Production Sites (HSE, 1977) Process Plant Layout page 562 (Mecklenburgh, 1985) Process Plant Layout page 564... 

The issues in these evaluations are safety as related to toxicity and flammability, environmental impact as related to the generation of volatile organic compounds and global warming, product performance as related to insulating properties, conformity to fire codes, and the like, cost and availability, and regulatory requirements. 

IDLH). For a combustible release, the code gives an estimate of the mass of vapor within the flammable limits. Model Description References Model description and references I... 

Travis. J. R, K L. Lam, and T. L. Wilson, 1994, GASFLOW A Three-Dimensional Finite-Volume Fluid Dynamics Code for Calculating the Transport, Mixing, and Combustion of Flammable Gases in Geometrically Complex Domains, LA-UR-94-2270 Vol. 1,2, and 3 LANL, July. 

Many building and health and safety codes require the use of gas storage cabinets, exhausted enclosures, and/or separately ventilated gas storage rooms for toxic gases. These controls are also recommended for flammable and corrosive gases. 

The Uniform Fire Code requires that pyrophoric, flammable, or highly toxic gases be within ventilated gas cabinets, laboratory fume hoods, or exhausted enclosures. ... 

The Uniform Mechanical Code requires that ducts carrying explosive or flammable gases be ducted directly to the outside of the building. 

Flammable and Combustible Liquids Code Standard for the Installation and Use of Stationary Combustion Engines and Turbines National Electrical Code Recommended Practice on Static Electricity Lightning Protection Code... 

CFR 1910.106. 1969. Flammable and Combustible Liquids. Code of Federal Regulations. Washington, DC. 

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