This analysis is prepared by the Mined Geologic Disposal System (MGDS) Waste Package Development Department (WPDD) in response to a request received via a QAP-3-12 Design Input Data Request (Ref. 5.1) from WAST Design (formerly MRSMPC Design). The request is to provide: Specific MPC access requirements for the addition of filler materials at the MGDS (i.e., location and size of access required). The objective of this analysis is to provide a response to the foregoing request. The purpose of this analysis is to provide a documented record of the basis for the response. The response is stated in Section 8 herein. The response is based upon requirements from an MGDS perspective.

A rationale for federal financial support to Amtrak has been that rail service conserves energy, compared to other forms of intercity passenger transportation. The numbers presented in this report suggest that the rationale might not be valid with regard to some alternative modes of transportation, and the report discusses some public policy implications that could follow from that conclusion.

The immobilization of TCE-degrading bacterium Burkholderia cepacia was evaluated using hydrophilic polyurethane foam. The influence of several foam formulation parameters upon cell retention was examined. Surfactant type was a major determinant of retention, with a lecithin- based compound retaining more cells than pluronic or silicone based surfactants. Excessive amounts of surfactant led to increased washout of bacteria. Increasing the biomass concentration from 4.8% to 10.5% caused fewer cells to be washed out. Embedding at reduced temperature did not significantly affect retention, while the use of a silane binding agent gave inconsistent results. The optimal formulation retained all but 0.2% of total embedded cells during passage of 2 liters of water through columns containing 2 g of foam. All foam formulations tested reduced the culturability of embedded cells by several orders of magnitude. However, O{sub 2} and CO{sub 2} evolution rates of embedded cells were never less than 50% of unembedded cells. Nutrient amendments stimulated an increase in cell volume and ribosomal activity as indicated by hybridization studies using fluorescently labeled ribosomal probes. these results indicated that, although immobilized cells were nonculturable, they were metabolically active and thus could be used for biodegradation of toxic compounds.

This document reports the results of testing four different flowmeters for use in the primary exhaust ventilation ducts of Double Shell Tanks on the hydrogen watch list that do not already have this capability. This currently includes tanks 241-AW-101,241-AN- 103, 241-AN-104, 241-AN-105 and 241-SY-103. The anticipated airflow velocity in these tanks range from 0.25 m/s(50 ft/min) to 1/78 m/s (350 ft/min). Past experiences at Hanford have forced the evaluation and selection of instruments to be used at the low flow and relatively high humidity conditions found in these tanks. Based on the results of this test, a flow meter has been chosen for installation in the primary exhaust ventilation ducts of the above mentioned waste tanks.

This calc note documents an evaluation of three options for monitoring hydrogen during waste tank intrusive activities. The three options are (1) one Combustible Gas Monitor with an operator monitoring the readout, (2) two CGMs with separate operators monitoring each gas monitor, and (3) one CGM with audible alarm, no dedicated operator monitoring readout. A comparison of the failure probabilities of the three options is provided. This Calculation Note supports the Flammable Gas Analysis for TWRS FSAR and BIO. This document is not to be used as the sole basis to authorize activities or to change authorization, safety or design bases.

This Engineering Calculation addresses consequences of mixing any two hazardous chemicals contained in the same section of TWRS supporting facilities, as screened in accordance with `Westinghouse Savannah River Company Engineering and Construction Services Division Guidelines and Methods.`

This test report includes the results of acceptance and operability testing of the 325 building diverter station. The test included steps for flushing, calibrating, and operating the system on backup power.