ML20056C493
| ML20056C493 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 09/02/1992 |
| From: | Dhir V CALIFORNIA, UNIV. OF, LOS ANGELES, CA |
| To: | Catton I Advisory Committee on Reactor Safeguards |
| References | |
| ACRS-CT-2042, CT-2042, NUDOCS 9306240267 | |
| Download: ML20056C493 (2) | |
Text
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MECHANICAL. AEBosPACE AND NUCLE AR ENGLNEERING DEPARTMENT SCHOOL OF ENGLNEERING AND APPLIED SCIENCE 40$ HILC ARD AVENt'E LO5 ANCELES, CAufDRNLA GrC24 3597 FAX #310 206.2302 September 2,1992 TO:
Dr. Ivan Catton, Chairman 1
Thermal Hydraulic Phenomena Subcommittee Via:
Paul Boehnert, Senior Staff Engineer FROM:
Vijay K. Dhir, Consultant SUBJ:
Thermal Hydraulic Phenomena Subcommittee Meeting e
August 18,1992 dd "a g
My comments on the above referenced meeting on GE Generie Power Uprate og Program / Fermi Unit 2 Power Increase are as follows:
ogy 1.
Considering the fact that 4.2% reactor power increase is obtained by flattering gyg the radial profile and that total reactor power will not exceed the design rj @
value, no new safety issue appears to arise as a result of power increase. The
-gg4 changes in flow parameters as a result of increase in power are small and
&o o there is no impact on the exclusion region. As such core power stability is not considered to be of concern.
2.
The vendor and utility should be commended for having a good testing program preceding the power increase.
It was reassuring to note that
- Q HPCI/RCIC tests followed the technical specification. Increase of power in g
steps of 2% (beyond 90% power level) followed by an evaluation of the plant response before power is further increased is a sound approach.
O 3.
Because of the increase in the dome pressure, an increase of about 20% in the d
force on SRV is of concern. However, according to the utility the valve g
hardware can easily accommodate such an increase in force.
o 3
4.
ATWS results were not presented.
Presumably NRR will report on the
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results after is has completed its review.
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4 310-206-2302 UCLA f14E als F02 EE: 02 ':2 15:19 i
Dr. Ivan Catton September 2,1992 Page 2 5.
In my opinion actual increase in electric power will depend on the response of the balance of the plant to the changed pressure, flow rate and temperature of steam leaving the reactor vessel.
Finally, I concur with the subcommittee's recommendation to approve G.E.
generic uprate as well as Fermi-2 plant uprate (5~o increase in steam flow rate),
't
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