Well-logging probe for measuring tritium: construction and operating manual

This document describes the as-built construction and operating procedures for a well-logging instrument capable of measuring tritium in situ in a well or borehole as small as 3-inch schedule 40 pipe. A companion document, A Design Manual for a Well-Logging Probe Capable of Measuring Tritium, PNL-4069, should be referred to for all design information and drawings. This document contains sections describing changes made between the design and construction phases, the general configuration of the instrument, and step-by-step operating procedures. The instrument can sample air or water and can purify the sample from other radionuclides or chemical contaminants. The instrument will operate satisfactorily in the presence of a moderate gamma-ray background and can measure tritium concentrations as low as 50 pCi/ml of water in normal logging operations