ML20236Q338
| ML20236Q338 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 11/16/1987 |
| From: | Frisch R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8711190325 | |
| Download: ML20236Q338 (3) | |
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@ POWERING Consumers Power MICHIGAN'S PROGRESS oeneral offices: 1945 West Pernall Road, Jackson, MI 49201 * (517) 788-0550 November 16, 1987 Nuclear Regulatory Commission-Document Control Desk Washington, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT -
REVIEW OF EPRI BWR CHEMISTRY GUIDELINES A recent NRC Inspection at Big Rock Point documented in Inspection Report 87-019 dated September 4, 1987, committed us to review the EPRI BWR Chemistry Guidelines for applicability to Big Rock Point and to identify which of the guidelines we intend to follow. The results of our review are provided herein.
Big Rock Point Plant Management has reviewed the "BWR Normal Water Chemistry Guidelines: 1986 Revision, EPRI NP-4946-SR, Final Draft, dated October 17, 1986." In nearly all applicable parameters listed in the guidelines, Big Rcck j
Point is currently operating at better than the achievable values. Plant i
Management recognizes that action is necessary prior to reaching the chemistry l
limits of our Technical Specifications and is committed to maintaining the j
best water chemistry practicable, j
Chapter 3 of the guidelines list parameters for three operational conditions.
Following is a discussion for each of the Tables in Chapter 3 and intentions / explanations where appropriate:
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Table 3-1, Reactor Water Cold Shutdown I
l Big Rock Point will follow the conductivity guidelines. However, sulfate measurements are not performed and chloride measurements are performed weekly instead of daily.
Big Rock Point intends to operate the reactor water cleanup system and
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condensate demineralizers as much as possible during cold shutdown l
conditions to maintain good water quality.
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Table 3-2, Reactor Water - Startup/ Hot Standby Big Rock Point will follow the conductivity and chloride guidelines.
1 However, sulfate measurements are not done and dissolved oxygen is measured by grab samples rather than continuously.
Big Rock Point is currently investigating different operational procedures to attain 300 ppb of dissolved oxygen prior to reactor water exceeding 140*C.
We intend to meet this guideline when enough testing during startups has been performed to allow determination of the proper operational procedure.
Table 3-3, Reactor Feedwater/ Condensate - Startup/ Hot Standby Big Rock Point will follow the guidelines of this Table with the exception of feedwater suspended corrosion products which we do not measure during startup.
L-Table 3-4, Reactor Water - Power Operation Big Rock Point will follow the guidelines of this Table. However, sulfate measurements are not performed since the achievable values can l
not be exceeded with our low conductivity (<0.09 pS/cm). Silica is measured two times per week instead of daily.
Table 3-5, Reactor Feedwater/ Condensate - Power Operation Big Rock Point will follow the guidelines.of this Table with the exception of feedwater total copper and iron.
I It may be impossible for a plant of Big Rock Point's design to meet the achievable value for feedwater total iron and copper. We are investigating methods of reducing iron (currently in the 5-10 ppb range) and copper (currently around 0.5 ppb).
Table 3-6, Control Rod Drive Water - Power Operation Conformance to this Table is demonstrated by reference to the feedwater monitor since polished condensate is the source of our control rod drive water.
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L The guidelines which we intend to meet as described above, will be j
incorporated into Plant procedures during the next applicability review cycle (which occurs no less frequently than once every two years). We believe this l
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l time frame to be reasonable since we are already below the achievable values in nearly all of the applicable parameters.
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$bk Ralph R Frisch j
Senior Licensing Analyst
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CC Administrator, Region III, NRC NRC Resident Inspector - Big Rock Point Plant d
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