ML18139A482

Responds to IE Bulletin 80-10 Re Contamination of Nonradioactive Sys.Lists Sys Considered Nonradioactive But Potentially Radioactive Through Interfaces W/Radioactive Sys.All Discharge Paths Are Sampled or Monitored

ML18139A482
Person / Time
Site:	Surry, North Anna
Issue date:	07/07/1980
From:	Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
421, IEB-80-10, NUDOCS 8007290840
Download: ML18139A482 (2)

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6, J a VIRGINIA E,Lll;'c-tn:rc* AND Pow ER CoMPANY Mr. James P. O'Reilly, Director Serial Number 421 Office of Inspection and Enforcement NO/SNK/sjl U. S. Nuclear Regulatory Commission Docket Nos. 50-280 Region II 50-281 101 Marietta Street, Suite 3100 50-338 Atlanta, Georgia 30303 50-339 License Nos. DPR-32 DPR-37 NPF-4 NPF-7

Dear Mr. O'Reilly:

I.E. BULLETIN 80-10 (45 DAY REPORT)

SURRY POWER STATION UNITS 1 AND 2 NORTH ANNA POWER STATION UNITS 1 AND 2 This is in response to I. E.Bulletin 80-10, "Contamination of -Non-Radioactive System and Resulting Potential for Unmonitored, Uncontrolled Release of Radio-activity to Environment", requiring a 45 day report on action items 1 and 2.

We have reviewed plant systems at Surry and North Anna Power Stations for con-ditions which could result in the contaminating event described in the subject bulletin. The results of that review are presented as follows:

Item No. 1 Review your facility design and operation to identify systems that are con-sidered as nonradioactive (or described as nonradioactive in the FSAR), but could possibly become radioactive through interfaces with radioactive systems, i.e., a nonradioactive system that could become contaminated due to leakage, valving errors or other operating conditions in radioactive systems. In particular, special consideration should be given to the following systems:

auxiliary boiler system, demineralized water system, isolation condenser system, PWR secondary water clean-up system, instrument air system, and the sanitary waste system.

Response

As a result of our review, we have identified the following systems that are considered as nonradioactive but could possibly become radioactive through interfaces with radioactive systems for both Surry and North Anna:

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.f' e e' VIRGINIA ELECTRIC AND POWER COMPANY TO Mr. James P. O'Reilly 2

1. Main Steam and Auxiliary Steam Systems 2, Auxiliary Boilers

3. Condensate Storage Tanks 4, Main Condensate System

5. Main Feedwater System

6. Component Cooling Water System 7, Service Water System

8. Steam Generator Blowdown System

9. Circulating Water System

10. Storm Drains 11, Turbine Building Vents and Drains 12, Condensate Polisher (Secondary Water Clean-up System)

Item No. 2 Establish a routine sampling/analysis or monitoring program for these systems in order to promptly identify any contaminating events which could lead to unmonitored, uncontrolled liquid or gaseous releases to the environment, including releases to on-site lea~hing fields or retention ponds.

Response

Our review also indicates that all discharge paths for the above mentioned systems are directly or indirectly sampled or monitored in order to identify any contaminating events for Surry and North Anna.

Primary to secondary leakage is considered the major source of contamination to the systems identified. At present, existing procedures are adequate for detecting primary to secondary leakage. Sampling and survey frequency is increased if primary to secondary tube leakage occurs.

Should you have any questions or require additional information, please contact this office.

Very truly yours,

~

Manager - Nuclear Operations and Maintenance SNK/sjl:F2 cc: Mr. Victor Stello, Director Office of Inspection and Enforcement