Process monitoring.

CFR · 2024-01-01 · US · Title 10

(a) Licensees subject to § 74.51 shall monitor internal transfers, storage, and processing of SSNM. The process monitoring must achieve the detection capabilities described in paragraph (b) of this section for all SSNM except: (1) SSNM that is subject to the item loss detection requirements of § 74.55; (2) Scrap in the form of small pieces, cuttings, chips, solutions, or in other forms that result from a manufacturing process, held in containers of 30 gallons or larger, with an SSNM content of less than 0.25 grams per liter; (3) SSNM with an estimated measurement standard deviation greater than five percent that is either input or output material associated with a unit that processes less than five formula kilograms over a consecutive three-month period; and (4) SSNM involved in research and development operations that process less than five formula kilograms during any seven-consecutive-day period. (b) (1) A statistical test that has at least a 95 percent power of detecting an abrupt loss of five formula kilograms within three working days of a loss of Category IA material from any accessible process location and within seven calendar days of a loss of Category IB material from any accessible process location; (2) A quality control test whereby process differences greater than three times the estimated standard deviation of the process difference estimator and 25 grams of SSNM are investigated; and (3) A trend analysis for monitoring and evaluating sequences of material cont

official document · source cfr-2024 · id 10:§ 74.53