====== Sensitive Alpha/Beta Counting Stations ====== - Description/Name: Surface Beta Counting Station at the 4850-ft level - Planned use (be specific): - Primary function: Materials screening to determine amount, type, and position of radioactive surface contaminants - Temporary and permanent storage: storage of materials to be screened and calibration samples in clean, radon-free environment, storage of gas consumables for detectors - Sample and detector handling: Clean room with class 10,000, liquid nitrogen, load/lock system, sample preparation including assay materials - Jigs, fixtures, scaffolds, etc. necessary: Jigs for sample preparation; lifting system to open and close the shielding around the counting stations. Lab fixtures: light-duty; power, lights, laboratory casework, communications (phone/computer), standard wall coverings, 10 kW of clean power (UPS?), air monitoring for certain gases - E & O activities: daily (emergency 24/7); Utilities: air, water, heat/cooling, light, communications, commercial drains, chemical drain/disposal path, liquid nitrogen, humidity control; Radon free air; Temperature; humidity control. - Occupancy: - Steady: Two people - Peak: Ten people - Adjacencies (list/distance): - Space size (gsf and/or WxLxH): 3m x 1m plus back access and neon recirculation system = 3.5 m x 1.5 m - Experiment Systems: low background drift chambers and DAQ system - Shielding: Very stout floor for shield; Copper, lead, water walls - Floor load (PSF): (Pb ~12 g/cm3) a 1-m high shield would be 1,200 g/cm2 or about 2400 lbs/ft2. Round up for safety ~ 1.5 tons/ft2. - Material handling (cranes, etc.) Movable crane/floor rail for heavy item movement - Finishes (walls/floor/ceiling):) Class 10,000 clean standard - Casework: - Storage: purge cabinets; LN2 - Furniture/Fixtures/Equipment (non-experiment): chemical storage cabinets, storage cabinets, etching tanks and rinse tanks for cleaning lead, a)Glove box (ea 3x3ft^2=9ft^2: 9ft^2); b)Assembly Table: 4 (ea 5 x 5 ft^2 = 25 ft^2: 100 ft^2) (with test equipments, can be combined to form single larger assembly support tables); c) Chairs: 4 (ea 3 x 3 ft^2 = 9 ft^2: 32 ft^2); d)Electronics Racks: 1 (3 x 2 ft^2 = 6 ft^2: 6 ft^2); e)Parts Storage Cabinets: 4 (4 x 2 ft^2 = 8 ft^2: 64ft^2); Chemical storage cabinets 4 (4 x 2 ft^2 = 8 ft^2: 64ft^2). - Mechanical: - Environmental conditions: Radon reduced air, temperature and humility control - Clean class: 10,000 - Ventilation: ~100 cfm - Exhaust: ~ 100 cfm - Plumbing (domestic, waste, systems): water, heating/cooling - Fire Suppression: - Building Management System: - Fume hoods: 1 (4x5ft^2=20ft^2) - Chilled water: not needed - Other: - Electrical: - Power (clean and dirty): clean 10 kW, dirty 5 kW - Lighting: - Low Voltage/Data/Communication: 100baseT or better ethernet - Fire Detection/Alarm: - Other: - Acoustical: - Vibration Isolation: - EMI/RFI Isolation: - Hazardous materials: - Special Consideration (expansion, etc.):