ML20012B363

Forwards Secondary Chemistry Annual Rept, for 1989.Rept Summarizes & Evaluates 1989 Condensate,Feedwater & Steam Generator Water Chemistry Operating Experience & Repts Total Time Secondary Water Chemistry Parameters Out of Spec

ML20012B363
Person / Time
Site:	Seabrook
Issue date:	03/02/1990
From:	Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-90052, NUDOCS 9003140267
Download: ML20012B363 (4)

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~ a; --New Hampshire Ted C. Feigenboom 1 ,

Senior Vice President and -

Ec _ - - - - Chief Operating Officer

, t NYN-90052 n 1 March 2, 1990  ;

i United States Nuclear Regulatory Commission F, -Washington,.DC 20555 J F J Attention: Document Control Desk.

References:

Facility Operating License NPF-67 Docket No. 50-443 '!

Subjects Secondary Chemistry Annual Report Gentlemen:

Enclosed-is the Seabrook Station Secondary Chemistry Annual Report.

This report summarizes and evaluates the 1989 condensate, feedwater, and steam generator water chemistry operating experience and reports the total  ;

time secondary water chemistry parameters were out of specification.

Should'you have any questions regarding this report, please contact Mr. '

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^ Richard R. Belanger at (603) 474-9521, extension 4048. (

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Ted C. Feig ,

Enclosure cci Mr. Will'ami T. Russell Regional Administrator 4

United States Nuclear Regulatory Commission

. Region I 475 Allendale Road King of Prussia, PA 19406  ;

g . Mr.: Victor Nerses, Project Manager gg Project' Directorate I-3 United States Nuclear Regulatory Commission B lg g Division of Reactor Projects .

Washington, DC~ 20555 MfVb Mr. Noel Dudley NRC Senior Resident Inspector h .hk P.O. Box 1149

[ f- Seabrook, NH. 03874 Jih

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! New Hompshire Yonkee Division of Public Service Company of New Hampshire

' P.O. Box 300

• Seabrook, NH 03874

• Telephone (603) 474-9521

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• March 2 1990 4

Enclosure to NYN-90052 d t

l IEQQHDARY CHEMISTRY ANNUAL REPORT 4

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Secondary Chemistry Annual Report-STEAM GENERATORS The steam generators were in wet lay up from January 1 to May 23. at which L point they were drained and refilled. There were no parameters out of specification during this period. During the next approximately.40 days, hydrazine and ammonia'were fed to the steam' generators using SKD-91 (the wet lay ap chemical addition point). This period encompassed five percent power testing of the plant. Blowdown was not in service immediately before and-during these excursions due to testing of the emergency feedwater system.

This-lack of continuous blowdown during heat up and testing allowed chloride contaminants to build-up, resulting in the following out of specification conditions:

• A' total of 75.7. hours out of specification for chlorides on Steam Generator 'B'. Peak chloride concentration was 139 ppb.

• A total of 27.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> out of specification for chlorides on Steam Generator 'C'. Peak chloride concentration was 102 ppb.

Subsequent to this lack of blowdown, an intermittant blowdown routine reduced generator chloride levels-to between 20 and 80 ppb. j During the first week in July the steam generators were placed back into wet j lay up, and were in that condition for the remainder of the year, with no  !

out of specification hours on samples. I

During the course of 1989 there were several periods of time during which-  ;)

.the steam generators either had no recirculation or had no nitrogen blanket  !

contrary to the requirements of the wet lay up condition. This was caused l by a frozen seal water line to the wet layup pump, emergency feedwater valve 1 work, feedwater valve work, and main steam valve work, as well as the l performance of integrated leak rate testing. )

• A. total of 1552 hours0.018 days <br />0.431 hours <br />0.00257 weeks <br />5.90536e-4 months <br /> with no nitrogen blanket and 1509 hours0.0175 days <br />0.419 hours <br />0.0025 weeks <br />5.741745e-4 months <br /> with no recirculation was accumulated on Steam Generator 'A'.

• A total of 1288 hours0.0149 days <br />0.358 hours <br />0.00213 weeks <br />4.90084e-4 months <br /> with no nitrogen blanket and 1221 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.645905e-4 months <br /> with no i recirculction was accumulated on Steam Generator 'B'.

• A total of 856 hours0.00991 days <br />0.238 hours <br />0.00142 weeks <br />3.25708e-4 months <br /> with no nitrogen blanket and 981 hours0.0114 days <br />0.273 hours <br />0.00162 weeks <br />3.732705e-4 months <br /> with no I recirculation was accumulated on Steam Generator 'C'.  ;

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+ A total of 928 hours0.0107 days <br />0.258 hours <br />0.00153 weeks <br />3.53104e-4 months <br /> with not nitrogen blanket and 1245 hours0.0144 days <br />0.346 hours <br />0.00206 weeks <br />4.737225e-4 months <br /> with no ,!

recirculation was accumulated on Steam Generator 'D'. 4

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• I CONDENSATE AND FEEDWATER The condensate and feedwater train, up to feedwater heater 26, were on wet lay up recirculation f rom January through the end of March. The chemistry was controlled using hydrazine at concentrations of >5 ppm.

Between April 1st and 19th no recirculation was done in anticipation of receipt of a low power license. The recirculation was restarted and continued through May 9. when condensate clean-up operations including deoxygenation / demineralization began prior to feeding water forward to the steem generators.

The table below summarines the range of values on the condensate and feedwater chemical parameters:

Oxygen Cation Chloride Iron Copper Sodium nH DDb Conduct. (onb) (DDb) (nob) (vob)

Condensate 8.0-9.6 <5 0.06-0.90 <1-6.6 8.7 <1 <1-12 Feedwater 6.6-10.1 <5-100 0.4 to >10 <1 14-19 1-2 <12 Following low power testing in June, the condensate /feedwater system was again put on wet lay up recirculation until November, when it was drained for work on feedwater heaters 21. 22. and 25. The condensers were refilled on December 22 in preparation for Power Ascension Testing. On December 23 the demineralizer trailers were put in service to commence clean-up.

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