CH-TRAMPAC - Waste Isolation Pilot Plant - U.S. Department of ...

CH-TRAMPAC Document Rev. 2, May 2005• Surface radiation dose rate ≤ payload container limit (Section 3.2): The radiation doserate limit at the surface of the overpack container shall be less than or equal to thepayload container limit provided in Table 3.2-1 of Section 3.2. The limit applies only tothe outermost payload container. For example, if an SWB overpack will be overpackedin a TDOP, the limit for radiation dose rate applies only to the TDOP.• Filter(s) Identification (Section 2.5): Identification shall be listed for the type andnumber of filters used in an overpack container (i.e., 85-gallon drum, SWB, or TDOP)for compliance with the total minimum hydrogen diffusivity requirement (from Table2.5-1 of Section 2.5). For overpacked container(s), documented compliance with thespecifications in Section 2.5 shall be verified [e.g., as recorded on associated PCTCD(s)or OPCTCD].Overpacked Container Measured Parameters• Overpacked Container ID Number (Section 2.4): List the site-specific identificationnumber for each of the overpacked payload containers.• Measured Weight and Measurement Error (Section 2.3): The measured weight andmeasurement error (one standard deviation) for each overpacked container or the entireoverpack configuration shall be recorded. The measured weight and measurement errormay be obtained from the PCTCD(s) (Table 6.2-1 or Table 6.2-2) for each overpackedcontainer. The measured weight of the individual overpacked containers is not requiredif the entire overpack configuration will be weighed. If the weight of each individualoverpacked container is recorded, enter the weight and measurement error (one standarddeviation) of the empty overpack container on the last row. Calculate the total weight asthe sum of each of the individual weights (including the weight of the empty overpackcontainer), and record this value in the appropriate box. Calculate the root-sum-ofsquares(RSS) error for the overpack configuration as the square root of the sum of thesquares of the individually listed errors, and record this value in the appropriate box. Ifthe entire overpack configuration is weighed, record the total weight of the overpackconfiguration and the measurement error (one standard deviation) in the appropriateboxes (in this case, the measurement error is the same as the RSS error).The total weight plus the total RSS error of the entire overpack configuration shall berecorded in the space provided and compared to the maximum allowable weight limit forthe outermost payload container of the overpack configuration (i.e., 1,000 lbs. per 85-gallon drum, 4,000 lbs. per SWB, or 6,700 lbs. per TDOP).• Measured Decay Heat and Measurement Error (Section 5.2.3): The measured decay heatvalue and measurement error (one standard deviation) for each overpacked containershall be recorded. The measured decay heat value and measurement error may beobtained from the PCTCD(s) (Table 6.2-1 or Table 6.2-2) or OPCTCD (Table 6.2-3) foreach overpacked payload container.For overpacked analytical category payload containers with the same shipping category,the decay heat value plus the measurement error for each payload container shall becompared individually to the Decay Heat Limit for the overpacked configuration. Thespaces provided for “Total” and “Total RSS Error” are for use in completing Table 6.2-4.6.2-12