Spark containment
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Published by SALUSTo ensure effective spark containment in the workplace, it is crucial to follow specific safety standards and guidelines. Here are some key points to consider:
- Control of Ignition Sources: Ensure that all potential sources of ignition, such as open flames, hot surfaces, and electrical sparks, are controlled or eliminated in areas where flammable vapors may be present. This includes ensuring that electrical equipment is properly installed and maintained according to safety standards [1].
- Static Protection: Implement bonding and grounding measures to prevent static sparks, especially during the transfer of flammable liquids. This involves using metallic bond wires to electrically connect equipment and containers to prevent static discharge [2].
- Ventilation: Provide adequate ventilation in areas where flammable vapors may accumulate. This can be achieved through natural or mechanical ventilation systems designed to prevent the buildup of hazardous concentrations of vapors [3].
- Housekeeping: Maintain a clean work environment by promptly cleaning up spills and keeping combustible materials to a minimum. This reduces the risk of fire and helps contain sparks [1].
- Hot Work Permits: When performing hot work such as welding or cutting, ensure that it is supervised by a responsible individual who has inspected the area for safety. This includes ensuring that all necessary precautions are in place to prevent ignition [1].
By adhering to these guidelines, you can significantly reduce the risk of sparks causing fires or explosions in the workplace.
Sources used for this answer
[1] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
Page 146
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (a) You must install all electrical wiring and equipment according to chapter 296-24 WAC Part L. - (b) Locations where flammable vapor-air mixtures may exist under normal operations must be classified Class I, Division 1 according to the requirements of chapter 296-24 WAC Part L. For those pieces of equipment installed in accordance with the requirements of subsection (3)(e)(ii) of this section, the Division 1 area must extend five feet in all directions from all points of vapor liberation. All areas within pits must be classified Division 1 if any part of the pit is within a Division 1 or 2 classified area, unless the pit is provided with mechanical ventilation. - (c) Locations where flammable vapor-air mixtures may exist under abnormal conditions and for a distance beyond Division 1 locations must be classified Division 2 according to the requirements of chapter 296-24 WAC Part L. These locations include an area within twenty feet horizontally, three feet vertically beyond a Division 1 area, and up to three feet above floor or grade level within twenty-five feet, if indoors, or ten feet if outdoors, from any pump, bleeder, withdrawal fitting, meter, or similar device handling Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C). Pits provided with adequate mechanical ventilation within a Division 1 or 2 area must be classified Division 2. If only Category 3 flammable liquids with a flashpoint at or above 100°F (37.8°C) or Category 4 flammable liquids are handled, then ordinary electrical equipment is satisfactory though care must be used in locating electrical apparatus to prevent hot metal from falling into open equipment. - (d) Where the provisions of (a), (b), and (c) of this subsection require…
[2] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
Page 148
Open source documentSource excerpt
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ area is provided with ventilation designed to prevent the accumulation of flammable vapors therein. - (iii) You must not draw from or fill containers of Category 1 or Category 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C), within buildings unless provision is made to prevent the accumulation of flammable vapors in hazardous concentrations. Where mechanical ventilation is required, you must keep it in operation while flammable liquids with a flashpoint below 100°F (37.8°C) are being handled. ## (3) Loading and unloading facilities . - (a) Separation . You must separate tank vehicle and tank car loading or unloading facilities from aboveground tanks, warehouses, other plant buildings or nearest line of adjoining property that may be built upon by a distance of twenty-five feet for Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C), and fifteen feet for Category 3 flammable liquids with a flashpoint at or above 100°F (37.8°C) and Category 4 flammable liquids measured from the nearest position of any fill spout. Buildings for pumps or shelters for personnel may be a part of the facility. - (b) Category restriction . You must not use equipment such as piping, pumps, and meters used for the transfer of Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C), between storage tanks and the fill stem of the loading rack for the transfer of Category 3 flammable liquids with a flashpoint at or above 100°F (37.8°C) or Category 4 flammable liquids. - (c) Valves . Valves used for the final control for filling tank vehicles must be of the selfclosing type and manually held open except where automatic means are provid…
[3] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
Page 147
Open source documentSource excerpt
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ free of weeds, trash, or other unnecessary combustible materials. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: RCW 49.17.010, .040, .050, and .060. 14-07-086 (Order 13-08), 296-24-[redacted postal code], filed 03/18/14, effective 05/01/14. Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), 296-24-[redacted postal code], filed 7/20/94, effective 9/20/94; 91-24-017 (Order 91-07), 296-24-[redacted postal code], filed 11/22/91, effective 12/24/91; 89-11-035 (Order 89-03), 296-24-[redacted postal code], filed 5/15/89, effective 6/30/89. Statutory Authority: RCW 49.17.040 and 49.17.050. 85-10-004 (Order 85-09), 296-24-[redacted postal code], filed 4/19/85; Order 76-6, 296-24-[redacted postal code], filed 3/1/76; Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], ## WAC 296-24-[redacted postal code] Bulk plants. ## (1) Storage . - (a) You must store Category 1 or 2 flammable liquids, or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C). Category 1 or 2 flammable liquids or Category 3 flammable liquids with a flashpoint below 100°F (37.8°C), in closed containers, or in storage tanks above ground outside of buildings, or underground in accordance with WAC 296-24-[redacted postal code]. - (b) You must store Category 3 flammable liquids with a flashpoint at or above 100°F (37.8°C) and Category 4 flammable liquids. Category 3 flammable liquids with a flashpoint at or above 100°F (37.8°C) and Category 4 flammable liquids in containers, or in tanks within buildings or above ground outside of buildings, or underground in accordance with WAC 2…
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