Operating limits Hanford Production Reactors. Revision 2 Page: 8 of 26
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H'-76327 RD Rev 2
Page 4iIII. OPERATING AND PERFORMANCE RESTRICTIONS
A. Operating Parameter Limitations
1. The process tube outlet temperature limit during steady state operating
conditions shall be 150 C or the saturation temperature at the end of
the fuel charge, whichever is lower.
2. The process tube outlet temperature limit during shutdown conditions shall
be 95 C. Coolant may be removed from process tubes during shutdown condi-
tions as required for fuel discharge or maintenance purposes. Such
interruptions to coolant flow shall be limited to time and duration such
that there will be no melting of either fuel cladding or bond material
3. The bulk outlet temperature limit during steady state operating conditions
u r ''el shall be 95 C.
C . The power levels of the reactors shall not exceed the following values:Reactor Power Level Limit - W
B,D,DR,F,H 2090
C 2310IE, KW 4400
5. The calculated fuel surface heat flux during steady state operation shall
not exceed 70 per cent of heat transfer burnout, based upon established
burnout correlations.
6. The linear rate-of-rise shall not exceed 25 per cent per minute of the
limiting power level, as determined from four above.
7. The startup period shall not be less than ten seconds.
(1) The melting temperature of aluminum is 660 C and of the "Al-Si" bond material
is 580 C.
UL ftV
4 C
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Owsley, G. F. Operating limits Hanford Production Reactors. Revision 2, report, May 20, 1963; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1277579/m1/8/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.