FRST AIR FILTER COMPOSITE SAMPLE ANALYSIS FOR PLUTONIUM DOE/ERSP PROCEDURE NO. 26 APPROVED: L DATE DRAFTED: 26 October 1978 10 November 1978 by Paul J. Mudra (ERSP Manager) Introduction Air filter composites from selected FRST air filters will be analyzed for plutonium. The composites will be of two types: Those composited monthly and those composited weekly. The monthly composites will be: A. Yvonne batch plant composite. B. Maggie 7 composite. C. Maggie 8 composite. D. Maggie 9 composite. E. MeshI composite. F. Mesh II composite. G. Mesh III composite. Monthly composite samples will be processed at the end of the month if at that time there are only 25 air filter samples or less represented in that month's composite. If during the course of a given month more than 25 air filter samples have been received for compositing in any group (e.g., Mesh II), those 25 samples will be composited and analyzed for plutonium immediately. The weekly composites will be: IL. A. Yvonne screen (shaker) plant composite. B. Janet soil stockpile composite. C. Irene soil lift composite. Procedure A. Sample Preparation - for each air filter composite. 1. Set up a work area in which no cross contamination can occur between other samples in the Sample PrepTrailer. 2 Remove 1/4 of each air filter and place in a clean 250 ml Pyrex beaker. 3. Cover the beaker with aluminum foil, place in a muffle furnace and ash at 400°C for about 12 hours. 4. Remove the sample from the furnace and allow to cool. 5. Take the sample to the Chemistry Trailer. A-26-1