ML20211M612
| ML20211M612 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 10/07/1997 |
| From: | Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML20211M609 | List: |
| References | |
| NUDOCS 9710150057 | |
| Download: ML20211M612 (3) | |
Text
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4 ATTACHMENT 2 TO LR-N970570 CYCLE 4 STARTUP PHYSICS TESTING The following are the tests performed as part of the startup physics testing program for Cycle 4 i
FUEL CORE LOADING Objective:
Load the core safely and efficiently to the full core size.
Acceptance Criteria:
a.)
Correct bundle in each location, verified by serial number on the bundle handle.
b.)
Correct orientation of each bundle.
c.)
Each bundle fully seated into its' associated fuel support piece.
Results:
On January 26,1991, each bundle was verified by serial number to be in the proper core location. The orientation of each bundle was also verified to be proper. The bundle seating check yielded seven irradiated GE7B bundles that did not satisfy requirements. Each bundle was reseated on January 28,1991 and retested satisfactory.
FULL CORE SHUTDOWN MARGIN Obiective:
Demonstrate that the reactor will remain subcritical throughout the cycle with the most reactive control rod fully withdrawn.
Acceptance Criteria:
Level 1: The shutdown margin measurement shall verify that the fully loaded, cold, xenon free core occurring at the most reactive time during the cycle remains subcritical with the analytically stromst control rod (or its' reactivity equivalent) fully withdrawn by at least 0.38 %Ak/k.
Level 2: Criticality should occur within ~1.0 % Ak/k of the predicted critical.
9710150057 971007 PDR ADOCK 05000354 P
PDR Page 1 of 3
LR-N970570
. Cycle'4 Startup Physics Testing Results-On February 16,1991, a shutdown margin measurement was performed during an insequence critical test. The measured shutdown margin was 1.54% A k/k. For the most reactive time during the cycle, shutdown margin was 1.46% Ak/k which satisfies the acceptance criteria Criticality occurred at 0.235% Ak/k of the predicted critical.
The design shutdown margin prediction for the most reactive time was 1.34% A k/k.
PROCESS COMPUTER Obiective:
Verify the performance of the GE9 NSSS programs on process computer under plant operating conditions.
Accootance Criteria:
Level 2:
a) The process computer performance codes calculating the minimum critical power
- rati:, (MCPR), linear heat generation rate (LHGR), and maximum average planar
- linear heat generation rate (MAPLHGR), and an independent method of calculation shall not differ in their results by more than the valen specified in the Design Change Package, b) The LPRM gain adjustment factors calculated by the independent method and the process computer shall not differ by more than the value specified in the Design Change Package.
Results:
Testing was performed utilizing instructions in Design Change Package 4EC-3172.
. This was performed at the end of Cycle 3, prior to introduction of GE9B in the core. All acceptance criteria was satisfied.
QORE PERFORMANCE
. Obiective:
Evaluate the principal thermal and hydraulic parameters associated with core behavior.
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' Attachment 2 LR-N970570
. Cycle 4 Startup Phyelcs Testing Acceptance Criteria:
Core flow rate, core thermal power level, MLHGR, MCPR, and MAPLHGR do not exceed the limits specified by the plant Technical Specifications.
Results:
These parameters were monitored via normal Technical Specification Surveillances and procedures during startup and subsequent steadv state operation. Limits were maintained within specifications at all times.
Below is a comparison of the three Technical Specification thermal limits at 200 MWD /ST cycle exposure.
Desion Prediction Actual Tech. Soec. Limit MLHGR 12.08 12.69 s14.40 MCPR 1,44 1.45 2 1.24 MAPLHGR 0.86 0.89 s 1.00 Pago 3 of 3 0
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