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US Occupational Safety and Health Administration flammable chemical storage standards (OSHA 29 CFR 1910.106)

Font Size: [Big][Mid][Small] 2016-8-23    Views: 890    
I. Basic Concepts
It refers to boiling point at an absolute pressure of 14.7 lbs per square inch pressure (760mm) of the boiling liquid. Since the material is a mixture of reasons or not a constant boiling point, can not be obtained a precise boiling point, for a 10 percent distillation of this section, the distillation of petroleum products according to ASTMD-86-62 test method can be used as the liquid boiling point .
Region refers to a fire in a building region, the region with other regions to partitions, isolation building should have a fire resistance of at least one hour in which communication port should also be protected by the fire resistance of at least 1 hour apparatus having.
"Flash point" refers to a liquid within the container to release sufficient vapor and air near the liquid surface is the lowest temperature of the combustible mixture. Decided by the following factors: the liquid 100oF (37.8 ℃) at less than 45 SUS viscosity and does not contain suspended solids, the trend in the test did not form a surface film, the standard test method for tag-closed type flash point of the experiment ( ASTM-56-70) prescribed steps to 100oF (37.8 ℃) at less than 45 SUS viscosity of the liquid, or contains suspended solids, there is a tendency to form a surface film under test, Sima Ding Peng will use the closed flash point test standard test method (ASTM D-93-71). 1.1 In addition to the note method ASTM D-93-71 1 prescribed for attention to the provisions of the relevant substance. For a liquid mixture of different volatile flash point, the flash point should be transported through its utilization of Standard Test Method for tag-closed type flash point of the test (ASTM D-56-70) in a predetermined step or a liquid Peng Augustine standard method closed flash point test device (ASTM D-93-71) was measured. Through this experiment, if the flash point is not less than the test 100oF (37.8 ℃), will be an additional flash point has been measured on the amount of evaporation to 90% of the original liquid sample, the smaller the value obtained in the two experiments It will be considered a flash point of substance. Subjected to self promote the thermal decomposition of organic oxides can not use any flash point measurement method specified in this section.
"Flammable liquid" means any flash point of not less than 100oF (37.8 ℃) liquid. Flammable liquids can be divided into the following two categories:
"Ⅱ liquids" includes a flash point at or above 100oF (37.8 ℃) but below 140oF (60 ℃) of liquid, which contain a flash point of not less than 200oF (93.3 ℃) of the component and the component is not less than the amount except for 99% of the total mixture.
"Ⅲ liquids" includes flash point of not less than 140oF (60 ℃) liquid.
Ⅲ liquids can be divided into two subcategories:
"ⅢA liquids" includes a flash point at or above 140oF (60 ℃), but lower than 200oF (93.3 ℃) liquid, and
Flash point component containing not less than 200oF (93.3 ℃) and the amount of this ingredient is not less than 99% except for the total amount of the mixture.
"ⅢB liquids" includes a flash point of not less than 200oF (93.3 ℃) liquid. This section does not include ⅢB liquids, appear in this section refers only to ⅢA Ⅲ liquids liquids. In a flammable liquid is heated to its flash point 30oF (16.7 ℃) range, should be in accordance with the requirements of low-class liquid process it.
"Flammable liquid" means any flash point of not less than 100oF (37.8 ℃) liquid. Which contain a flash point of not less than 100oF (37.8 ℃) component and the amount of the ingredients, except not less than 99% of the total mixture. Flammable liquids known as Class Ⅰ liquid.
Class Ⅰ liquid can be divided into the following three categories:
ⅠA class includes a flash point below 73oF (22.8 ℃) and a boiling point lower than 100oF (37.8 ℃) liquid.
ⅠB class includes a flash point below 73oF (22.8 ℃) and a boiling point at or above 100oF (37.8 ℃) liquid.
ⅠC class includes a flash point below 73oF (22.8 ℃) but below 100oF (37.8 ℃) liquid.
Safety cans refers to a container licensed capacity of not more than five gallons and with a spring closing lid and spout, designed so that it will be able to secure the release of the internal pressure caused by exposure to fire. If not otherwise stated, it refers to at least be permitted following the US nationally recognized laboratory accreditation or included: Underwriters Laboratories, Factory Mutual organization. Mobile storage or moving boxes. This section only applies to flammable liquid storage per unit weight of not more than 60 gallons of oil drums or other containers (including flammable aerosols) and not more than 660 gallons per unit weight of the mobile tank storage.
Two, OSHA standard storage of flammable and explosive chemicals
Exception: This section does not apply to:
Oil depots, gas stations, refineries and distilling the contents of the long storage; Ⅰ Ⅱ class or category of liquid motor vehicles, aircraft, boats or portable or stationary engine fuel tank; preservation of no more than 30 days of flammable or combustible paint , oil, varnish or paint for the similar mixture or maintenance; beverage packaging capacity of not more than one gallon in a single container.
Vessel design, construction and capacity: Use only licensed mobile storage container or box. Metal containers meet federal regulations title (Department of Transportation hazardous materials regulations designated by the Commission) 49 Chapter Ⅰ requirements and mobile storage tank is considered acceptable.
Storage cabinet design, construction, and capacity - Maximum capacity: storage cabinet should not be stored more than 60 gallons of Class Ⅰ or Ⅱ liquids can not store more than 120 gallons of liquid Ⅲ class.
Fire safety cabinets Fire performance: the use of the building materials testing standard methods of combustion, NFPA251-1969, predetermined standard time - 10 Minutes combustion test temperature curve, the configuration of the storage cabinet should be able to design the interior temperature is limited to 325oF Inside. In the combustion test, all transfers and joints should be kept closed, and the door should be closed, the cabinet should be based on the eye-catching text marked "flammable - No smoking."
In the following manner constructed metal cabinet will be deemed to meet the criteria: the bottom, top, and sides of the cabinet doors should be at least 18 specifications of the plate and have a two-layer structure 1-1 / 2 inches of clearance. Next should be riveting, welding can be as effective as other methods for fastening. There are three locks equipped goalkeeper, the threshold should be higher than the bottom of the tank at least 2 inches.
Constructed in a manner lockers will be deemed to meet the criteria: the bottom, top and sides should be at least one inch thick plywood permission level is made, this will not collapse or plywood Spall in a fire situation. In all of the following should be two flathead wood screws and nailed in engagement. Such as the use of more than one door, then there should be a less than 1-inch thick scarfing lap. Hinge installed in the combustion test screw or loosen the screws around the case of combustion material, still, lose their support.
Internal storage compartment storage: internal storage in each chamber should be kept at least 3 feet wide and a clean walkway. More than 30 gallons capacity of the cabinet should not be stacked pile. Dispensing liquid pump or approved only by self-closing faucet.
Office space to store the liquid ban, unless it is required to maintain and operate the building and equipment operation. Such liquid storage cabinet or safety cans sealed metal container or no access to the public areas of the building inside the storeroom door.
This chapter does not apply to these plants:
Occasional use flammable or combustible liquids; only in the physical unit operations such as mixing, drying, evaporation, distillation or the like do not involve chemical reactions requires the use or handling of flammable or combustible liquids. This chapter does not apply to chemical plants, oil refineries or distillation plant.
Occasionally, storage or use of flammable and combustible liquids:
Applications: This section is for those parts of the plant occasionally use or handling of flammable or combustible liquids, such as automotive assembly, electronics manufacturing, furniture production Chui or other similar activities. Container: flammable or combustible liquids stored in the tank sealable containers.
Not on buildings or building zones in the amount of liquid inside the storage room or storage cabinet must not exceed:
In containers of 25 gallons of ⅠA liquids.
120 gallons of ⅠB, ⅠC, Ⅱ or Ⅲ container filled with liquid.
660 gallons of ⅠB, ⅠC, Ⅱ or Ⅲ liquid single removable storage cabinets installed.
After completion of the processing liquid. When not in use the liquid, the liquid should be stored in covered containers.
When using or handling flammable or combustible liquids, in addition to being in a closed container, it should take measures to immediately and safely dispose of leaking or spilled liquid.
Only when the vapor may emit to the place without any open flame or other ignition source, the liquid to use Ⅰ class.
When flammable or combustible liquids or poured out of these containers from the vessel, container or mobile cabinet within the building only through a closed piping system, safety cans or from the use of specific gravity using a device approved by steadily since closed valve draw liquid from the container or from the top or cabinet style. Prohibited containers or mobile cabinet pressure transmission fluid.
Grounding: Class Ⅰ liquid into the container can not be assigned unless the nozzle and the container was electrically connected to each other. When the metal container under the floor in the filling or canned electrically connected to the body during the canning operation and the container via a wired connection, will be deemed to comply with the provisions of this chapter recalls.
1910.144 labeling substances dangerous for the safety of the color code
DANGER: low flash point or city 80oF (open cup tester) safety tank or other convenient container should be painted red with a legible identification, identification by yellow tape around the tank or in the tank on yellow superscript, or paint the obvious way to make the material name.
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