ML18051B552

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Forwards Steam Generator Eddy Current Insp Plans for 1985/86 Refueling Outage, Per 850514 Commitment
ML18051B552
Person / Time
Site: Palisades Entergy icon.png
Issue date: 09/27/1985
From: Kuemin J
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Office of Nuclear Reactor Regulation
Shared Package
ML18051B553 List:
References
NUDOCS 8510010366
Download: ML18051B552 (2)


Text

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consumers Power company General Offices: 1945 West Parnell Road, Jackson, Ml 49201 *.(517) 788-0550 September 27, 1985 Director, Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -

STEAM GENERATOR EDDY CURRENT INSPECTION PLANS FOR 1985/86 REFUELING OUTAGE Our letter of May 14, 1984 committed to present our eddy current inspection i.

<t' plans to the NRC two months prior to the start of the refueling outage. The attached inspection plans fulfill our commitment.

We have previously presented these plans in an informal meeting held between members of our staffs on August 12, 1985. At the meeting, two questions from the NRC arose. The first was on condenser tube materials and the second pertained to the basis for the 0.6 gpm primary to secondary Technical Specification (section 3.l.5d) leakage limit during periods of startup and major load changes. In response to the first question, the condenser tube materials are 90-10 copper-nickel with stainless tubes in the air cooler and impingement sections (refer to sectfon 10.2.3.1 of the updated FSAR). The 0.6 gpm was arrived at simply to allow for the difficulties that exist in trying to apply calculations for steady state power operation in a non-steady state condition. The calculation is made by measuring the carryover of Xe-133 from the primary system to the condenser offgas. Duririg non-steady state conditions Xe-133 fluctuates without any real correlation to leakage and flow rates will also vary due to pressure changes in both the primary and secondary systems. All the fluctuations lead to uncertainties which were assumed to be enveloped by a doubling of the 0.3 gpm leakage criteria.

~/.~

i/~am:~ ~. Kuemin Staff Licensing Engineer CC Administrator, Region III, USNRC NRC Resident Inspector - Palisades ...

Attachment OC0985-0293-NL04

,f consumers Power company General Offlc*: 1945 West Parnell Road, Jackson, Ml 49:201 * (!517) 788-0550 September 27, 1985 Director, Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT -

STEAM GENERATOR EDDY CURRENT INSPECTION PLANS FOR 1985/86 REFUELING OUTAGE Our letter of May 14, 1984 committed to present our eddy current inspection plans to the NRC two months prior to the start of the refueling outage. The attached inspection plans fulfill our commitment.

We have previously presented these plans in an informal meeting held between members of our staffs on August 12, 1985. At the meeting, two questions from the NRC arose. The first was on condenser tube materials and the second pertained to the basis for the 0.6 gpm primary to secondary Technical Specification (section 3.l.5d) leakage limit during periods of startup and major load changes. In response to the first question, the condenser tube materials are 90-10 copper-nickel with stainless tubes in the air cooler and impingement sections (refer to section 10.2.3.1 of the updated FSAR). The 0.6 gpm was arrived at simply to allow for the difficulties that exist in trying to apply calculations for steady state power operation in a non-steady state condition. The calculation is made by measuring the carryover of Xe-133 from the primary system to the condenser offgas. During non-steady state conditions Xe-133 fluctuates without any real correlation to leakage and flow rates will also vary due to pressure changes in both the primary and secondary systems. All the fluctuations lead to uncertainties which were assumed to be enveloped by a doubling of the 0.3 gpm leakage criteria.

James L Kuemin (Signed)

James L Kuemin Staff Licensing Engineer CC Administrator, Region III, USNRC NRC Resident Inspector - Palisades Attachment OC0985-0293-NL04