ML20151Z008

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Affidavit of Wb Winthrope.* Discusses Operation & Insp of Circulating & Svc Water Sys at Plant.Chronology of Insps Performed on Sys & Statement of Prof Qualifications Encl
ML20151Z008
Person / Time
Site: Seabrook  NextEra Energy icon.png
Issue date: 04/28/1988
From: Leland W
PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:
Shared Package
ML20151Y818 List:
References
OL-1, NUDOCS 8805050173
Download: ML20151Z008 (10)


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UNITED STATES OF AMERICA UNITED STATES NUCLEAR REGULATORY COMMISSION before the ATOMIC SAFETY AND LICENSING BOARD

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In the Matter of )

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PUBLIC SERVICE COMPANY ) Docket Nos. 50-443 OL-1 NEW HAMPSHIRE, et al. ) No. 50-444 OL-1

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(Seabrook Station, Units 1 ) (On-site Emergency and 2) ) Planning Issues)

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AFFIDAVIT OF WINTHROPE B. LELAND I, Winthrope B. Leland, being on oath, depose and say as follows:

1. I am the Chemistry and Health Physics Manager at Scabrook Station. A statement on my professional qualifications is attached hereto and marked as Attachment "A".
2. The operation of the Seabrook Station Circulating and Service Water Systems (CW and SW) started on August 25, 1985.

Concomitant with this was the initiation of the Chlorination System operation. The Seabrook Station Chemistry Program Manual, Chapter 4.2, is the implementing document for the Chlorine Management Program (CMP) which bases the long term scheme for chlorine regime on biopanel inspections. The Seabrook Station Chemistry Department inspects CW and SW system components, monitors effectiveness of bicfouling control as well as ensuring compliance with NPDES restrictions.

3. The chronology appended to this document lists the inspections performed on the CW and SW system and plant components using seawater, since operation in 1985. During the l

first five months of the circulating water system operation, the l system was chlorinated. Biopanels in the intake and discharge i transition structures showed no signs of any bio-settlement.

( During January 1986, preparations for epoxy coating of the main condensers tube sheets allowed access to main condensers water i

l 8805050173 000429 PDR ADOCK 05000443 l 0 PDR i

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4 boxes. This inspection showed no biofouling or settlement on the neoprene lining or the tube sheets. Inspection of the tidal interface line in the CW pump bay at this time also showed no signs of any biological activity. Between January and June, 1986 operation of CW and SW was intermittent, and for short periods. Biopanel inspections were performed during the first six months of 1986 with no fouling observed. Full CW operation and chlorination resumed in June 1986. Additional biopanels were deployed in May 1986 to provide added assessment capabilities. No settlemercts of mussels were noted until late July 1986 when the numbers increased from approximately 3 to about 200 per panel in two weeks. Chlorination was maintained through December 1986, and all but three specimens detached by January 1987. The detached specimens did not cause any blockage. During this period the dosing line to the SW pump bay was utilized to maintain chlorine levels in the SW system.

December 1986 inspection of SW pump house at the tidal interface showed no biosettlement other than green algae.

4. Starting in June of 1987, the following seawater components or heat exchangers were examined: SCCW, PCCW "A" and "B",

C7JCW "A" and "B", Main condensers, intake transition structure and CW pump bay. No biofouling was seen in any of these components. Limited barnacle settlement was observed in the condenser water boxes and the circulating water pump house.

However, none of these barnacles were alive.

5. In May, 1987 a particularly heavy barnacle settlement was noted on the biopanels followed later in June 1987 by a heavy mussel settlement. Chlorination was maintained, and by the end of July 1987, the mussel settlement had diminished by 50%.

There was 100% barnacle mortality with 90% of the dead barnacle shells detached. The detached specimens did not cause any blockage. By November, 1987 the mussel settlement also diminished to only a few specimens. Similar observations were made on inspection of the CW pump bay walls in September 1987; i.e. dead barnacles detached but no mussel settlement.

Normandeau Associates, a biological consultant, also inspected the biopenels. Their conclusion was that the settlement observed on the biopanels was insignificant when compared with the open-ocean biopanels that they deploy in the vicinity and outside the intake structures. Open-ocean biopanels were considerably fouled.

6. Thus far, no integrated growth measurements nor integrated mass measurement for mussels have been made on the biopanels because there have been no permanent settlements. Although the barnacle set showed growth during the first two months (May-June 1987), these specimens died and the residual shells detached, diminishing the fouling effect. No biofouling of any kind has been observed in any component using seawater. Some small shell fragments have been found in several tubes; however, these

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l shells were not blocking flow. Finally, biopanel measurements have been confirmed by visual observation within the pump bays.

These facts support our position that no biofouling exists in the SW system.

7. As part of the ongoing surveillance test program required by Technical Specification 4.0.5 and implemented in accordance with the requirements of the ASME code, Chapter XI, subsection IWP, and Seabrook Safety Evaluation Report (SSER) 6, all six of the Service Water system pumps (41A, B, C, and D and 110A and B) are tested quarterly as a minimum. The test consists of establishing a known system flow condition (flow path and flow rate) and recording data indicative of pump and system performance. Because the differential pressure across the pump is verified to remain within an acceptable band for the required flow rate, not only is pump performance being monitored but the condition of the overall system is also tested. Should fouling or any other phenomenon occur which would restrict system flow, it would be detected during the quarterly pump surveillance test as an unsatisfactory increase in the required pump differential pressure to attain the required flow rate or an inability to achieve the required flow. All service water heat exchangers are on line and therefore monitored during each pump surveillance test. Because the six service water pumps are tested quarterly, the system flow resistance is checked and verified to be satisfactory a total of 24 separate times each year, 12 times for each train of Service Water.
8. Furthermore, the Operations Department performs the following tasks to ensure that blockage or reduced flow does not occur:
  • SW pump flow capacities are measured quarterly. This is performed in accordance with Operations Procedure OX1416.04.
  • The SW strainer immediately upstream of PCCW and DGJCW heat exchangers are cleaned after reaching a 6 psi differential pressure (normal psid is about 5 lbs.). This is performed in accordance with Operations Procedures VAS D.5500 and VAS D.5502.
  • Service water flow is checked by an auxiliary operator routinely during each shift, at a minimun.
9. Service and circulating water are open-loop, seawater systems. Biofouling control and monitoring for these systems is described above. The function of these open-loop systems is to cool closed-loop systems, i.e., PCCW and DGJCW. These

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1 closed-loop systems, in turn, are used to cool i

equipment, e.g., ECCS. The only water used in the closed-loop systems is demineralized water which is produced on-site from well water. Thus, seawater cannot enter these closed-loop cooling systems and hence seawater originated macrofouling cannot occur. No biofouling has been observed within any of the plant's closed-loop cooling systems. The source of water for these systems is deep (artesian-type) wells from the town of Seabrook. Such wells do not contain  ;

macrofouling organisms. The water is first chlorinated when '

it is brought into the site. Next it is filtered through activated carbon beds which remove particulates, suspended solids, organic matter and residual chlorine. This water is then demineralized and passed through an ultra-violet light sterilization unit prior to distributicn into plant systems.

No other water source is used to supply make-up water to plant closed-loop cooling systems. This process eliminates, for all practical purposes, microfouling organisms from entering plant systems through the make-up water.

10. The chemistry department performs quarterly surveillances for biological activity in the plants closed-loop cooling systems. In addition, when the water treatment plant runs as described in paragraph 9, biolcgical activity of the output is performed at least monthly. Annually, a microbiological analysis of these systems is performed to identify any specific bacterial species present and whether they are alive, viable or dead.
11. The chemistry department performs inspections of closed-loop cooling systems components when they are opened for maintenance activities. These inspections are performed in accordance with chemistry procedure CN0944.01.

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12. Controls established at the Seabrook Station ensure that the cooling water system will be effectively monitored for biofouling control.

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Winthrope/ B. Leland STATE OF NEW HAMPSHIRE Rockingham ss. April 3 , 1988 The above-subscribed Winthrope B. Leland appeared before me and made oath that he had read the foregoing affidavit and thatknowledge.

his the statements set forth therein are true to the best of Before me, 50 L h $ew Notary Ptiblic c-\

1 My Commission Expires: March 6, 1990 e

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CHRONOLOGY l

08-12-85 Inspection of cooling tower SW check valves no s biofouling noted. '

l 8-25-85 to Start-up of CW and SW Systems and chlorination 12-24-85 starts. Chlorine demand study.

12-24-85 Shutdown of SW and CW Systems.

01-21-86 Inspection of CW pumphouse, center bay. No biofouling noted.

01-23-86 Inspection of condenser air removal heat exchangers. No biofoulding noted.

01-27-86 Inspection of main condenser; no biofouling noted. Inspection of Water Box Priming pump heat exchangers; no biofouling noted.

01-96 CW/SW flow only for seven days.

02-86 SW flow only on 23 days.

03-86 SW flow only on 27 days.

04-86 CW and SW flow for 14 days.

05-86 CW or SW for 19 days.

06-86 CW and SW flow for 24 days. Chlorination System in operation with CW/SW flow.

07-86 to Chlorination Syreat operation and CW flow.

12-86 Dosing direct to JW oystem du,;ing observation of increased bio 3.cgice), activity.

07-86 Extra bio-panels added to CW and SW pumphouse.

12-23-86 Inspection of SW pumphouse. No biofouling noted.

06-04-87 Inspection of "A" PCCW heat exchanger. No biofouling observed.

06-05-87 Diesel Generator Jacket Cooling Water heat exchanger inspection. No biofouling noted.

07-06-87 Barnacles noted in intake transition structure and on bio-panels. Chlorination of CW underway.

.0 07-10-87 to Heavy mussel set on all biopanels.

07-24-87 07-30-87 50% reduction in mussel set. 100% barnacle mortality; 90% of barnacle shells detach from panels.

08-12-87 Inspection of main condenser. No biofouling noted.

09-11-87 Inspection of non-safety related "A" SCCW heat exchanger. No biofouling noted.

09-11-87 Inspection of CW pumphouse (dewatered).

Barnacle detached from Walls just as on panels. No mussel settlement also paralleled on panels. No biofouling or significant level of debris.

09-25-87 Inspection of "B" PCCW heat exchanger. No biofouling noted. Inspection of "B" DGJCW heat exchanger. No biofouling noted.

09-28-87 Inspection of SW pipe downstream of SW-V5. A few dead barnacles; no biofouling.

12-22-87 Inspection of the drain ' SW line supplying the ncn-safety related SCCW heat exchanger showed small (<1") pieces of what resembled Tubuleria Larynx (hydroids) . These were found in areas of the pipe which still had stagnant water in them.

01-06-88 Inspection of vacuum breaker for service water pump SW-P-41A showed no deposits nor biosettlement of any kind.

02-02-88 Inspection of a 24" SW pipe in the cooling tower (1-SW-1820-9-153-24") showed no

, biofouling of any kind.

I 04-06-88 Inspection of intake and discharge transition

, structure from water level to the bottom

! (-260'); by a contract diver verified no l fouling. Some dead barnacle shells were observed only in the Intake Transition Structure.

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STATEMENT OF PROFESSIONAL QUALIFICA1 IONS Winthroce B. Leland OUALIFICATIONS: Sixteen years of experience in Chemistry and Health Physics disciplines.

Experience ranged from six years at the SIC Naval Reactors Prototype, 1 year at Argonne National Laboratory and 4 years at Connecticut Yankee Atomic Power Company.

EXPERIENCE:

Nov 1979 to present Public Service Company of New Hampshire.

Seabrook Station.

Job

Title:

Chemistry and Health Physics Manager - February to present Responsible for the coordination and direction of the Chemistry and Health Physics Departments. Advise Station Manager of plant radiological conditions and radiation protection program status.

Job

Title:

Chemistry Department Supervisor - May 1981 to February 1986 Responsibilities: Manage the Chemistry Department in planning, developing and implementing programs of chemistry and radiochemistry which result in the safe and efficient operation of the nuclear generating station.

Job

Title:

Cheuist - November 1977 to May 1981.

l Responsibilities: Supply technical and supervisory support to the Chemistry Supervisor. Implement current j techniques, concepts and analytical methods necessary to support the efficient operation of the nuclear generating supervise chemistry and radiochemistry functions of the station.

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Nov 1975 to Nov 1979 Connecticut Yankee Atomic Power Company, Haddam, CT Job

Title:

Chemistry and Health Physics Technician Responsibilities: Perform Chemical and Radiochemistry functions required for all phases of operation of a pressurized water nuclear plant. Provide Health Physics support during maintenance and operation of the plant.

Oct 1974 to Oct 1975 Argone National Laboratory, INEL, Idaho Falls, Idaho Job

Title:

Senior Health Physics Technician Responsibilities: Write procedures for Laboratory Health Physics Manual, administer radiation worker training course, introduce and train radiation worker in concepts of total containment devices, perform safety audits, provide radiation protection for EBR-II reactor maintenance, operate multi channel analyzer for detection of reactor fission breaks.

Jan 1971 to Oct 1974 General Electric Company, Knolls Atomic power Laboratory. SIC Prototype, Windsor, CT l Job Title q Radiological Controls Technician-Responsibilities: Maintain Qualification

, as Radiological Controls and Engineering l Laboratory Technician (ELT) as specified by Naval Reactors. Performed and encountered technical aspects of:

I monitoring radiation exposure, shield

! planning, liquid and solid waste I disposal, thermoluminescent dosimetry, I

environmental monitoring, perform plant chemical and radiochemical analysis, operate and calibrate instrumentation, radiation and contamination surveys, first aid, audit radiological operations l

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of Navy personnel and submit written reports of audits.

Jan 1969 to Jan 1971 Combustion Engineering - Naval Reactors Division, Windsor, CT (S1C Prototype, same facility as above)

Job

Title:

Radiological Controls Technician Responsibilities: Same as above under General Electric EDUCATION: Bachelor of Science in Chemistry from the University of Hartford - August 1980 MISCELLANEOUS: Held "L" clearance with the Energy Research and Development Administration.

Member of the Health Physics Society.

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