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_.gin _.. .. -.. ra}y:: .iy.yny►x' - �''�:+t=n.:i:_: _ - - :?. j y _ .y r:i;r. -+Y'•' ..,-s;,r :.ti.;°:roe: r' .:y:.�,..:yw •:+ i;:. •a, c.r•r�"...W_'_' v-5. - ,r a r,' �.... r Emission Vest Report EMC WA-2-08 Section 4 Revision: 0 Date:September 30, 1999 Page 2 of 9 However, the use of a total of 12 traverse points (6 on a diameter)instead of the 24 specified in Method 1 for the known proximity of flow disturbances at the test locations was performed as planned. A check for absence of cyclonic flow was not conducted at the test locations prior,to . P the start of sampling or during the test project. If any cyclonic flow conditions were found at the test locations during process operation,it would likely change in intensity throughout a cycle as velocity and temperature fluctuated and would have to be checked throughout a = complete cycle. Also,the unit was not designed to provide emission measurement test locations and could not be modified without significant changes in design if cyclonic flow g � y problems were found. 4.1.2 Determination of Gas Velocity and Volumetric etric Flaw Rates Method 2 in Appendix A of 40 CFR 60 (basis for SOP MRI-8402)was used to measure gas velocities and volumetric flow rates with Type 5 P itot tubes that are components of the traversing sampling trains. Pitot tubes meeting the dimensional # . specifications in the method were used. However,the itot tube coefficients were adjusted � ted for blockage in the gas stream caused by the probe assemblies used durin g sampling. An lin P g average adjusted coefficient for each such pitot tube was calculated in a spreadsheet using g procedures cited in Method 2. }Y An aneroid barometer calibrated against a mercury barometer was used to measure atmospheric pressure at the sampling locations. eau s 4.1.3 Determination of Dry Gas Molecular Weight and Emission Rate e Correction Factors Method 3B in Appendix A of 40 CFR 60(basis for SOP MRI-8406 )was used to collect multi-point, integrated gas bag samples simultaneous) with the traversing/ . y � isokinetic sampling for determination of dry gas molecular weight. The integrated g � g as sampling apparatus used to collect the samples is a component of each traversing sampling P g train. Integrated gas samples were extracted at a constant rate from the exhaust of a traversing sampling train just upstream from the outlet of the dry gas meter outlet orifice. M I has determined through investigation that the irn in er contents of all trains used did P g not cause interferences (e.g.,loss of carbon dioxide)durin g sample collection. Also in P less than one minute after the start of traversinghsokinetic sampling,the entire traversin g train is purged with sampled gas, and integrated gas sampling can begin. Sampling� P g was conducted at a constant rate throughout the run while the traversin isokinetic sampling g f MM-AE"4451-0"3 54.wpd t c :x