If horizontal sashes are used, sash panels (horizontal sliding) must be 12 to 14 inches in width. This reduces fan size, motor horsepower, make up air volume, and make up air conditioning costs. Reference – 2001 Calif. Fire Code Sec. Such equipment shall meet all applicable requirements. These hoods permit a stable air balance between the ventilation systems and exhaust by incorporating a bypass feature. 2015 ASHRAE Handbook—HVAC Applications, Chapter 16. 15. Self-contained units shall be maintained in accordance with the manufacturer’s instructions. 24 CCR, Part 2 (California Building Code). Highly toxic flammable or toxic flammable gases when not stored in gas cabinets, exhausted enclosures or gas rooms. After completion, the effectiveness of the installed shielding and protective design features shall be evaluated by the Radiation Safety Program and required reports submitted to and accepted by the State prior to operation of the radiation producing machine. 3. When an exterior wall cannot be provided for the room, automatic sprinklers shall be installed within the room. The laboratory doors shall be automatically self-closing. For further guidance on complying with UK Fire Regulations, take a look at this short guide to making your premises safe from fire. For Biosafety Level 2 applications involving toxic chemicals or radionuclides, a Class II- B type cabinet must be installed. If shut off valves are installed in the supply line for maintenance purposes, provisions shall be made to prevent unauthorized shut off. When the hazardous materials stored in a control area are not in excess of the amounts specified in the tables below, such storage shall conform to the Building Code requirements for Group B Occupancy. Fume hoods are assumed to contain such substances; hence, Stanford interprets this regulation to mean that emergency eyewash/shower station shall be within 10 seconds of fume hoods. National Institutes of Health Design Requirements Manual (December 12, 2016) Section Flammable Liquid Storage Cabinets must NOT be wall mounted. Laboratory fume hoods shall provide a minimum average effective face velocity of 100 feet per minute (fpm), with a minimum of 70 fpm at any point. Designs must be submitted to the State through the Radiation Safety Program. 6. The average person covers a distance of approximately 55 ft. in 10 seconds when walking at a normal pace. Limited quantities of perchloric acid vapor can be kept from condensing in laboratory exhaust systems by trapping or scrubbing the vapors at the point of origin. Emergency eyewash and shower equipment shall be on the same level as the hazard and accessible for immediate use in locations that require no more than 10 seconds for the injured person to reach. 3. Laboratory design must include an autoclave for sterilizing media, lab instruments, and medical waste as necessary. “Effective and suitable provision shall be made to ensure that every enclosed workplace is ventilated by a sufficient quantity of fresh or purified air.” Workplace (Health, Safety and Welfare) Regulations 1992. 2. 8. Wastes are generally stored in the lab in which they are generated, not in centralized accumulation areas. 4. 1, “Structural Shielding and Evaluation for Medical Use of X-rays and Gamma Rays of Energies up to 10 Mev”, National Council on Radiation Protection, Report No. Tissue culture rooms that involve the use of biohazardous agents shall be negative as stated in C-1 above. Building Occupancy Classification- Occupancy classification is to be based upon an assessment of a projected chemical inventory of the building. Our privacy statement provides more details on these scripts. Air turbulence affects the capability of hoods to exhaust contaminated air. The heating of flammable gas storage areas shall be indirectly heated, such as by air, steam, hot water, etc. CCR Title 8, 3272(b)  9. Laboratory Quality Assurance (QA) encompasses a range of activities that enable laboratories to achieve and maintain high levels of accuracy and proficiency despite changes in test methods and the volume of specimens tested. Windows must. 3. Careful consideration should be given to not only current, but also future use of the laboratory as research needs change. 3. Designer Qualifications- The designer must have the appropriate professional license in his/her area of expertise. A watertight surface will contain any chemical spills or leaks from leaking to underneath hood. 7. Substances classified by the manufacturer or distributor according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) as Category 1 (serious eye damage) or Category 2A (irritant) eye hazards. h) The hood surface should have an all-welded construction and have accessible rounded corners for cleaning ease. 2. For more information about our bespoke fitted labs, visit our homepage or call our team on 01223 894 833. Minimum wall thickness of 0.044 inches (18 gauge). There are two aspects to meeting fire safety regulations: The Regulatory Reform Order 2005 applies to all non-dwelling properties, where there could be a risk to life. It is important to note that use practices must be considered during the design process, as they can directly influence how the laboratory will be designed. 1. Failure to take this effect into consideration may result in an artificially warm working environment. 1. 3. Portable cryogenic containers are required to be individually secured with a minimum of 1 (one) restraint. Class II-B cabinets do not allow in-room venting of exhaust air and are thus appropriate for such uses. Wood cabinets are not UL listed or EH&S approved. Class IV laser installations must be provided with interlocked warnings that indicate the status of the laser prior to entering the facility. Clean rooms requiring positive pressure should have entry vestibules provided with door-closing mechanisms so that both doors are not open at the same time. Treatment systems for the exhaust of toxic and highly toxic gases must be reviewed and approved by EH&S. It is left to the discretion of the user of the Guide to include the design feature. There is also an increase of potential contamination within the cabinet if the autoclave is not functioning properly since the steam may contain spores or aerosols. CDC-NIH Biosafety in Microbiological and Biomedical Laboratories 5th Edition, Section IV – Laboratory Biosafety Level CriteriaSection, Biosafety Level 2 D. Laboratory Facilities (Secondary Barriers) -# 11, Guidelines for Research Involving Recombinant DNA Molecules (NIH Guidelines)  Appendix G-II-B-4. Cal/OSHA Standard 5191, Appendix A, Occupational Exposure to Hazardous Chemicals in Laboratories Rooms housing immunocompromised animals should be at a positive pressure with respect to adjoining areas. Good practice per Stanford University EH&S. Fume hoods should not be the sole means of room air exhaust. Flammable Liquid Storage Cabinets shall be constructed as follows: a. Continual fan service will ensure that hazardous materials are exhausted continually. Laboratory design shall include spill control and secondary containment for the storage of hazardous materials liquids in accordance with the requirements of Uniform Fire Code Sections 8003.1.3. 8. 2. This section presents the minimum requirements for eyewash and shower equipment for the emergency treatment of the eyes or body of a person exposed to hazardous substances. A thimble connection to the exhaust is one way to exhaust a Class IIA cabinet. Laboratories working with biological agents must also notify the Health and Safety Executive when category HG2, HG3 and HG4 agents are used on the premises for the first time. Floors in storage areas for corrosive liquids shall be of liquid tight construction. 7. Having secured hazardous materials storage will keep unauthorized personnel from gaining access to them. The lab bench must be resistant to the chemical actions of these substances and disinfectants. To keep insects out of the lab, the doors must be closed while an experiment is in progress, and windows shall be screened if they are capable of being opened. Each fan shall be the last element of the system so that the ductwork through the building is under negative pressure. 7. a)  Heated perchloric acid shall only be used in a laboratory hood specifically designed for its use and identified as “For Perchloric Acid Operations.” (Exception: Hoods not specifically designed for use with perchloric acid shall be permitted to be used where the vapors are trapped and scrubbed before they are released into the hood.). For bookshelves, friction matting may be substituted upon consultation with EH&S. Openings between the room or enclosure and interior spaces shall be smoke-and draft-control assemblies having no less than a 1-hour fire-protection rating. Laboratories must be maintained under negative pressure in relation to the corridor or other less hazardous areas. This procedure should be implemented at the point that a form I is submitted. These placement considerations are required to ensure maximum effectiveness of the primary barrier (BSC). 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