Document V37njyZ8k6ny4p7JXV5eqO9zq

used for Utts test procedure snail consist of the snowing: I) High Volute Air Sellers with 0.3 micron glass-fiber filters shall-be used for the determination of cast house particulate (Mission concentrations. II) Velocity measurements shall be determined by the use of'a. suitable Instrument designed' for the accurate determination of velocities within the range encountered' during the sampling duration. 111) Temperature measurements shall be determined by the use.of a suitable Instrument designed .for the accurate determination of temperature within the range encountered during the sampling duration, C| Test-Procedure. I) Sampling Time Duration: Sampling - and opacity observations will initiate with the opening of the tap hole- and terminate with the plugging or the tap hole. II) Opacity Observations: Opacity-observations of the cast house roof monitor particulate emissions Into the atmosphere shall be performed during the test runs by use of the OSCPA Method- 9 Procedure (40 CFR 60. Appendix A. Method 9. 42 fed. Reg. 417S4 (August 18. 1977)). III) Humber of Test Runs: The 'average -or six complete sampling runs during normal -operating conditions will be the minimum'required to determine compliance with this subsection (a). tv) -- Sampled Emission: Ourtng the test period, particulate emissions from the casting operation shall be directed Into the cast house to the extent feasible and shall not create an Unsafe or hazardous condition. Those emissions In and/or directed to the cast house- shall be allowed to escape only at sampling area locations. Compliance with this requirement shall be- determined by an agency-certifted observer, - and any significant visible emission from the cast house i I - 60 - any place other than a sampling location will Invalidate the test. v| Sampler Locations: Samplers shall be located as close as practicable to the discharge point of the cast house . emissions to the atmosphere - and- shall be oriented in the -direction of the air -flow. The soapier grid pattern Shalt-bo-dlvlded up such that the cross sectional area per sampler shall not exceed 9.29 - square meters (IbO square feet). If necessary to Insure representative samples.- the- Agency may speciry an area of less than 9-2S squarejaelers 080 . sqjuare feet).' -Each sanpler shall be located at the approximate center of each sampling are*. - The 'concentration of.particulate amttem.as. dotoanlnod-hy-oach.sanpler shall be considered as the concentration for each respective area. Vl) Velocity Measurement Locations: Velocity., measurements shall be made as close- as possible to each Sampling point location ' wlthourtntierfer-lngwttrrttre measurement. The-average velocity measured at each sampling point for the entire sample .run shall be used as the overage velocity for each entire sampler area respect truly.1....... vl! | Temperature Measurement locations: The same as velocity measurement .locations. vtlt) Emission Exhaust Pressure Measurements: This pressure - shall be considered the barometric pressure as measured at. the cast house floor;- lx) Recording of Operating Parameters: The following Information shall be recorded for those casts tested: material charge weights to the blast furnace for the " operating'tanr-durtng-wtrleli-- cast house tests are - performed: cast weights, total weight of iron plus .slag entering the cast house during; eacircasttiig operation- - sampled: all information contained In blast furnace casting logs or other similar