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Title: Position paper -- Tank ventilation system design air flow rates

The purpose of this paper is to document a project position on required ventilation system design air flow rates for the waste storage tanks currently being designed by project W-236A, the Multi-Function Waste Tank Facility (MWTF). The Title 1 design primary tank heat removal system consists of two systems: a primary tank vapor space ventilation system; and an annulus ventilation system. At the conclusion of Title 1 design, air flow rates for the primary and annulus ventilation systems were 960 scfm and 4,400 scfm, respectively, per tank. These design flow rates were capable of removing 1,250,000 Btu/hr from each tank. However, recently completed and ongoing studies have resulted in a design change to reduce the extreme case heat load to 700,000 Btu/hr. This revision of the extreme case heat load, coupled with results of scale model evaporative testing performed by WHC Thermal Hydraulics, allow for a reduction of the design air flow rates for both primary and annulus ventilation systems. Based on the preceding discussion, ICF Kaiser Hanford Co. concludes that the design should incorporate the following design air flow rates: Primary ventilation system--500 scfm maximum and Annulus ventilation system--1,100 scfm maximum. In addition, the minimum air flow rates inmore » the primary and annulus ventilation systems will be investigated during Title 2 design. The results of the Title 2 investigation will determine the range of available temperature control using variable air flows to both ventilation systems.« less
Authors:
Publication Date:
OSTI Identifier:
10117825
Report Number(s):
WHC-SD-W236A-TI--008
ON: DE95006631; BR: 35AF11201/35AF11202; TRN: AHC29508%%22
DOE Contract Number:
AC06-87RL10930
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 4 Jan 1995
Research Org:
Westinghouse Hanford Co., Richland, WA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; HANFORD RESERVATION; STORAGE FACILITIES; VENTILATION SYSTEMS; FLOW RATE; DESIGN; RADIOACTIVE WASTE STORAGE; TEMPERATURE CONTROL; ANNULAR SPACE; RECOMMENDATIONS 052002; WASTE DISPOSAL AND STORAGE