siemens - Public Service Commission

8. The 4-pass box redesign assures optimum operability, best performance, zero
leakage and longest life.
TEI has installed, over the last 26 years, over 400 replacement bundles in scores of
nuclear plants. These bundles are operating very successfully and are expected to do
so for the remaining lives of the plants. We believe that Progress Energy can benefit
from such improved and effective reheaters.
On the basis of our experience we have selected a working and proven design for
this proposal which fits the specific conditions of the CR-3 cycle and meets your
betterment goals, for both 2625 MWth and 3030 MWth loads and beyond.
We believe your request for a proposal is aimed to procure equipment and
components which are better - and obviously different - than the current, deficient
ones. The proposed bundles which are of sound mechanical and thermohydraulic
design are optimized for CR-3 secondary cycle conditions.
The offered design for the bundles is a 4-pass High Capacity tube field design with
3/4” O.D. finned tubes in vertical U-bend orientation, but with an octagonal tube
field extended to include the side segments of the larger tubesheet internal
circumference. The tubes are finned with 27 fins/in.
The octagonal tube field outline has its sides conform precisely to the prescribed
arrangement of the side outermost tubes while maximizing the total tube count.
The details of the design are shown in the attached Mechanical Outline Drawings
NO. 07-M062-010, -021, -01 1 & -012.
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