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Home My WebLink AboutLetter- Exhaust System (t) OfHKOfH ON T"' WATE" CityofO,hko,h Diy;,ion OfIMp,,"on S"""" 215 Chnreh Avon", PO Box 1130 Oshkow WI 54902-1130 Offi" 920-236-5050 p" 920-236-5084 PETE ZWIRCIDTZ OSHKOSH TRUCK CORP 2307 OREGON ST OSHKOSH WI 54902 November 4, 2005 Re: 2737 Harrison St. Dear Mr. Zwirchitz; On June 7, 2005 you were sent correspondence indicating that information must be provided demonstrating that the operations at this plant do not necessitate the installation of a Hazardous Exhaust Ventilation System. To date this documentation has not been provided. Enclosed please find a copy of this past correspondence and attachment. It was intended that this information would be provided prior to commencing operations in this plant. Clearly this has not been done. Due to the nature of the dismantling operations, it is feasible that the interior environment of the plant could become exposed to dangerous levels of hazardous, flanunable vapors. For this reason documentation that the thresholds defined in the State of Wisconsin Mechanical Code are not, will not be exceeded must be provided. Additionally, there are Building Permit issues to be resolved. This office has communicated to your Engineer, Thomas Karrels on at least 3 occasions, the earliest being the beginning of July, that permits must be obtained for the alterations to create 3 new loading docks along south wall and 7 new overhead door openings in the west wall. Additionally, while this work was being performed, at no time did any contractor call for required inspections. These issues must be addressed immediately. Please call me at 236-5045 to advise me ofthe progress or schedule to comply. cc: Jackson Kinney, Director of Community Development (t) OfHKOfH ON T"' WATE" C¡tyofO,],ko,h Divi,ion OfIMp"ûon Son'¡", 215 Chnreh Av,nu, PO Box 1130 O,],ko,hWI54902-1130 Offi" 920-236-5050 p" 920-236-5084 PETE ZWIRCIDTZ OSHKOSH TRUCK CORP 2307 OREGON ST OSHKOSH WI 54902 June 7, 2005 Re: 2737 Harrison St. Dear Mr. Zwirchitz; This correspondence is to confirm the results of our recent phone conversation regarding the proposed use of this facility and the code issues discussed. Your company is proposing to use this facility for dismantling used vehicles your company previously manufactured. The vehicles being dismantled are diesel fuel powered. Per our conversation, this proposed use for this facility falls into the same Factory, F-I Moderate Hazard, Occupancy classification as the prior use (fabrication and installation of Refuse Bodies.) Our discussion did note one significant difference between Oshkosh Truck's proposed use and the previous use; that being the dismantling of used vehicles. This brought forth a question regarding the potential for flammable vapors from fuel and battery vapors. A review of this issue with, Kevin Benner, Building Systems Inspector determined that areas exposed to nominal diesel fuel vapors do not require compliance with Hazardous Location wiring methods. Per our discussion, the batteries are removed early on in the dismantling process, either stage 1 or 2. Per your processes, accumulation of batteries within the factory is minimal as they are placed on a pallet and once a single layer of batteries has accumulated, the pallet is removed to an open-air accessory shelter/storage building. We did however determine that your company must provide documentation showing that a Hazardous Exhaust System is not required for ventilating hazardous exhaust fumes. Per Comm 64.510.2, (copy enclosed) a Hazardous Exhaust System is required if flammable vapors, gas or fumes are present in concentrations exceeding 25 percent of the lower flammability limit of the substance for the expected room temperature. There are two other criteria where Hazardous Exhaust Systems are required, neither of which we believed applied. However, per our discussion you will have your Industrial Hygienists review the code and your proposed operations and develop documentation and correspondence to demonstrate that your operations will be in compliance without necessitating a Hazardous Exhaust System. This documentation will become part of the property file for future reference, should this or similar questions develop in the future. If you have questions or concerns regarding this summary please call me at 920-236-5045. EXHAUST SYSTEMS 507.13.3 Medium temperature. The minimum airflow for Type I hoods used for medium-temperature appliances such as rotisseries, grills and ranges shall be determined as fol- lows: Number of exposed sides Formula For SI: 4 (island or central hood) Q = 10M Q = O.5IA 3 or less Q=75A Q=0.38A Alternate formula Q = 50PD Q = 0.25PD 507.13.4 Low temperature. The minimum airflow for Type 1 hoods used for low-temperature appliances such as medium-to-Iow temperature ranges, roasters, roasting ov- ens, pastry ovens and appliances approved for use under a Type II hood, such as pizza ovens, shall be deterntined as follows: Number of exposed sides Formula 4 (island or central hood) Q = 75A For SI: Q=0.38A (, ~).¡ .:;:- [, -- 2002 WISCONSIN ENROLLED COMMERCIAL BUILDING CODE 507.13.3-510.2.1 508.1.1 Makeup air temperature. The temperature differ- ential between makeup air and the air in the conditioned space shall not exceed 10°F (6°C). Exceptions: 1. Makeup air that is part of the air-conditioning sys- tem. 2. Makeup air that does not decrease the comfort con- ditions of the occupied space. 508.2 Compensating hoods. Manufacturers of compensating hoods shall provide a label indicating minimum exhaust flow and maximum makeup airflow that provides capture and con- tainment of the exhaust effluent. SECTION 509 FIRE SUPPRESSION SYSTEMS 509,1 Where required. Commercial food heat-processing ap- pliances reqnired by Section 507.2.1 to have a Type Ihood shall be provided with an approved automatic fire suppression sys- tem complying with the International Building Code and the International Fire Code. SECTION 510 HAZARDOUS EXHAUST SYSTEMS j 510.1 General. This section shall govern the design and con- : slruction of duct systems for hazardous exhaust and shall deter- I mine where such systems are reqnired. Hazardous exhaust systems are systems designed to capture and control hazardous - emissions generated from product handling or processes, and convey those emissions to the outdoors. Hazardous emissions include flammable vapors, gases, fumes, mists or dusts, and volatile or airborne materials posing a health hazard, such as toxic or corrosive materials. For the purposes of this section, the health-hazard rating of materials shall be as specified in NFPA 704. 510.2 Where required. A hazardous exhaust system shall be \ required wherever operations involving the handling or pro- cessing of hazardous materials, in the absence of such exhaust systems and under nonnal operating conditions, have the po- tential to create one of the following conditions: -I. A flammable vapor, gas, fume, mist or dust is present in concentrations exceeding 25 percent of the lower flammability limit of the substance for the expected: room temperature, 2. A vapor, gas, fume, mist or dust with a health-hazard rat- ing of 4 is present in any concentration. 3. A vapor, gas, fume, mist or dust with a health-hazard rat- ing of I, 2 or 3 is present in concentrations exceeding 1 percent of the median lethal concentration of the sub- stance for acute inhalation toxicity. [F] 510.2.1 Lumber yards and woodworking facilities. Equipment or machinery located inside buildings at lumber yards and woodworking facilities which generates or emits combustible dust shall be provided with an approved dust- collection and exhaust system installed in conformance with this section and the International Fire Code. Equip- M-39