2916 STATE ST BSNW LLC 2019-04-17

I f HAZARDOUS MATERIALS—GENERAL BIONS ¢_ ve 3. Where a property exceeds 10,000 square feet as set forth in Section 5003.1 shall be in accordance with Sec- (929 m2), a group of two outdoor control tions 5001,5003 and 5004.Storage of hazardous materials in areas is allowed when approved and when amounts not exceeding the maximum allowable quantity per each control area is separated by a minimum control area as set forth in Section 5003.1 shall be in accor- distance of 50 feet(15 240 mm). dance with Sections 5001 and 5003. Retail and wholesale storage and display of nonflammable solid and nonflammable ., 4. Where a property exceeds 35,000 square feet and noncombustible liquid hazardous materials in Group M (3252 m2), additional groups of outdoor con occupancies and Group S storage shall be in accordance with f trol areas are allowed when approved and Section 5003.11. when each group is separated by a minimum distance of 300 feet(91 440 mm). ❖This scope paragraph considers three storage situa- ; tions: storage of quantities exceeding the maximum, ; ❖This section lists four requirements for an outdoor storage of quantities within the allowable limits, and " control area: retail and wholesale storage and display in Group M Item 1 requires that outdoor control areas be keptoccupancies and storage areas in Group S occupan- clear of combustible materials for a minimum of 15 cies. Section references are given for each of the , feet(4572 mm) around the control area. three storage and use situations. Item 2 requires the control area to either be 20 feet 5004.2 Spill control and secondary containment for liquid way from the lot lines, street,x ndi or public and solid hazardous materials. Rooms, buildings or areas way or have a 2-hour blank wall extending a mini- used for the storage of liquid or solid hazardous materials mum of 30 inches (762 mm) above and to either side shall be provided with spill control and secondary contain- of the storage area, if the distance requirement can- ment in accordance with Sections 5004.2.1 through 5004.2.3. �" not be met. Exception 1 allows encroachment on lot lines, public streets, public alleys or public ways Exception: Outdoor storage of containers on approved through the use of a protective 2-hour fire-resistance- containment pallets in accordance with Section 5004.2.3. rated wall, which acts as a shield between the stor- .;.This section introduces the specific requirements for age and the exposure. Recognition of the protection spill control and secondary containment for solid and thus provided can also be found in Section 5904.2.1, liquid hazardous materials.The exception recognizes which contains comparable provisions for flammable the innovation of containment pallets and their suit- solids identifying the use of a protective structure as a ability for preventing the spread of hazardous materi- } means to allow encroachment on lot lines, public als spills in outdoor control areas (see commentary, streets, public alleys or public ways. For gases, Section 5004.2.3). Exception 2 allows encroachment on property lines, public streets, public ways, etc.,through the use of an 5004.2.1 Spill control for hazardous material liquids. unpenetrated protective 2-hour fire barrier (con- Rooms, buildings or areas used for the storage of hazardous i structed as required by Section 707 of the IBC), material liquids in individual vessels havinga capacity of which acts as a shield between the storage and the more than 55 gallons (208 L), or in which the aggregate exposure. This recognizes that a 2-hour fire-barrier capacity of multiple vessels exceeds 1,000 gallons (3785 L), provides an equivalent means of achieving the objec- shall be provided with spill control to prevent the flow of liq- tive of spatial separation.Where a separation assem- uids to adjoining areas.Floors in indoor locations and similar bly is used instead of a physical separation distance, surfaces in outdoor locations shall be constructed to contain a the wall must interrupt the line-of-sight between stor- spill from the largest single vessel by one of the following age and exposure and be configured so as to prevent methods: a hazardous accumulation of gas. 1. Liquid-tight sloped or recessed floors in indoor loca- <; Item 3 allows two control areas on properties larger tions or similar areas in outdoor locations. than 10,000 square feet (929 m2) when they are sep- arated by at least 50 feet (15 240 mm). The 20-foot 2. Liquid-tight floors in indoor locations or similar areas (6096 mm) distance from the lot lines, street, alley or in outdoor locations provided with liquid-tight raised or t public way is still in effect. recessed sills or dikes. Item 4 allows for more than two control areas when 3. Sumps and collection systems. the property exceeds 35,000 square feet (3252 m2). 4. Other approved engineered systems. Each group must be separated by a minimum dis- tance of 300 feet (91 440 mm) to reduce the likeli- Except for surfacing, the floors, sills, dikes, sumps and hood of simultaneous involvement of multiple outdoor collection systems shall be constructed of noncombustible control areas in a single incident. material,and the liquid-tight seal shall be compatible with the . material stored.When liquid-tight sills or dikes are provided, 0 they are not required at perimeter openings having an open- SECTION 5004 grate trench across the opening that connects to an approved STORAGE collection system. 5004.1 Scope. Storage of hazardous materials in amounts ❖The requirement for spill control in a room or area is exceeding the maximum allowable quantity per control area based on two items. The first is that the storage con- 2012 INTERNATIONAL FIRE CODE®COMMENTARY 50-40 -} 3