ML20078D632

Responds to IE Bulletin 83-05, ASME Nuclear Code Pumps & Spare Parts Mfg by Hayward Tyler Pump Co. One Hayward Tyler Pump Currently Installed in Unit 1 & 2 Spent Fuel Cooling Sys.Twelve Pumps to Be Installed in Radwaste Facility

ML20078D632
Person / Time
Site:	Oconee
Issue date:	09/08/1983
From:	Tucker H DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-SSINS-6820 IEB-83-05, IEB-83-5, NUDOCS 8310040575
Download: ML20078D632 (5)

Text

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OllAHLOTTE. N.G. 28242 "*

IIAL H. TUCKEH TELEPItONE September 8, 1983 " * " ' ' "

83 SEP 20 A 9 : 0 8 Mr. J. P. O'Reilly, Regional Administrator U. S. .Muclear Regulatory Commission Region II 101 Marietta Street, NW Suite 2900 Atlanta, Georgia 30303

Subject:

Oconee Nuclear Station Docket Nos. 50-269, 50-270, and 50-287

Dear Sir:

The IE Bulletin 83-05 dated May 13, 1983, concerning the ASME Nuclear Code Pumps and Spare Parts manufactured by the Hayward Tyler Pump Company (HTPC) required a response by August 16, 1983, from holders of operating licenses for nuclear power reactors which use or plan to use pumps and/or spare parts manufactured by the HTPC, My August 16, 1983 letter addressed the delay in the submittal of the report providing information in response to the required actions specified in the Bulletin and that the report would be submitted to you no later than September 16, 1983.

Please find attached a report providing the requested response as specified by Items 3 and 4. Please note that my August 16, 1983 letter had previously addressed action Item 4 of the Bulletin. The response to Item 4 provided in the attached report super-cedes the response provided in the August 16, 1983 letter.

Very truly yours, G ,. ,

G df f a x/ -

H. B. Tucker PFG:dyh Attachment l

cc: Documeat Control Desk U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. J. C. Bryant NRC Resident Inspector Oconee Nuclear Station Mr. John F. Suermann Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Section Files OS-815.02 0310040575 830908 PDR ADOCK 05000269 O PDR TE/I

Action Item 1:

Those holders of operating licenses that use or plan to use ASME Code pumps important to safety manufactured by HTPC are to take the following actions:

a. Review all ASME Code pumps manufactured by HTPC and provide a list of affected pumps and their service application. A list of affected pumps that was developed by review of HTPC records is given in Attachment 1.

b. Provide a summary of the inservice test requirements or plans to develop inservice test requirements for each affected pump at your facility.

c. Conduct a pump performance test to assure that each pump will perform its intended saftty function. As a minimum, this test should contain the criteria given in Attachment 2 of the IE Bulletin 83-05. In addi-tion to the criteria presented in Attachment 2, it should be demonstrat-ed that the pumps operated satisfactorily for a minimum duration of 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> without maintenance or repair. Provide the results of the pump tests or, if testing has not been completed at the time of the Bulletin response, provide a description of the test plan. Nuclear reactor fa-cility licensees with pumps that are currently in service can provide the results of previous tests and/or operating experience that provide equivalent data and results in lieu of performing the above tests.

d. Provide the results of the required ASME Code system hydrostatic pres-sure test that was performed at your facility when the pump was tested and any corrective actions taken as a result of the test. If the sys-tem hydrostatic test has not been completed, provide the test plans.

Response 1:

a. The only pump manufactured by the Hayward Tyler Pump Company (HTPC) currently installed at the Oconee Nuclear Station is located in the Units 1 and 2 Spent Fuel Cooling System. Its application is to take suction from the Units 1 and 2 shared spent fuel pool and to recirculate the fluid back to the pool after passing through the coolers, deminera-lizer, and filters in various combinations depending on conditions.

There are two additional pumps in service in the Units 1 and 2 Spent Fuel Cooling System. These two additional pumps were not manufactured by the HTPC.

Twelve pumps manufactured by HTPC will be installed in the radwaste facility. The radwaste facility is currently under construction and is scheduled to begin operation in March 1986. Prior to placing the faci-lity into service, appropriate testing and checkout of the facility's systems, which will include the HTPC pumps, will be performed. These pumps (the 12 HTPC pumps); however, are considered to be non-safety-related. These twelve pumps are considered to be exempt frem the action items required of this Bulletin, since they are not important to safety,

b. The Hayward Tyler pump installed in the Units 1 and 2 Spent Fuel Pool Cooling System is tested periodically as required by Section XI, IWP,

of the ASME Boiler and Pressure Vessel Code, 1980 edition, (hereinafter referred to as the " Code").

The Periodic Testing requirements include inlet pressure measurement, outlet pressure measurement, developed head calculation, vibration amplitude measurement and, annually, bearing temperature measurement.

Also, observation of an adequate lubricant supply is specified for each pump being tested.

A motor current check is not routinely performed except for trouble-shooting. However, when this pump and motor wire installed, a plant electrician wired the motor, checked rotation, and checked phase cur-rent once the motor was running. The motor has no record of malfunc-tion since installation and no problems have been experienced with the motor switch-gear due to overload trips. Further, in response to the Bulletin, a motor current check was performed and showed 38 amperes per phase, an acceptable value for the design 2oad,

c. At the completion of installation in July 1981, an acceptance test was run to prove the pump's ability to meet design criteria in the Spent Fuel Cooling System. The acceptance test was successfully completed and the pump placed in operation; and the pump has continued to operate acceptably since then. Since the initial acceptance test performed in in July, 1981, the pump has been tested per the requirements provided by our response to Action Item lb and has met all acceptance criteria.

Currently the vibration amplitude criteria are the most severe re-ferenced in the Code, and the functional requirements are per the sys-tem design / operating conditions with tolerances defined by the Code.

Tests were run on this pump monthly as required per Oconee Technical Specifications until the 1981 Code was adopted and testing intervals were redefined as 3 months.

A 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> endurance test was initiated on August 10, 1983, at 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br /> and was completed August 12, 1983 at 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br />, with no operat-ing problems.

d. The pump manufactured by the HTPC and associated piping addition to the Spent Fuel Cooling System was hydrostatically tested at 187.5 psig prior to system turnover with no leaks observed. Operations'

- shift personnel check the Spent Fuel Cooler area each shif t and record which pumps are in operation. Leaks, if observed, are noted on this form and necessary repairs are arranged.

Action Item 2:

Those holders of operating licenses that use or plan to use spare parts manufactured by HTPC in Code pumps important to safety are to take the following actions:

a. Review the HIPC recommendations on replacement parts given in Attach-ment 3. For those facilities that have not yet installed the replace-ment parts, implement the recommendations given in Attachment 3 in your

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... t f procedures for pump assembly or provide the basis for any deviations.

For those facilities with parts already installed, describe any devia-t' ions from the recommendations given'in Attachment 3 and discuss their significance.

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b. Provide the information requested in Item lb.

.c. Conduct a pump performance. test as specified in Item lc unless it can be d monstrated that'the spare part in question will not affect any parameters'th'at are measured or function demonstrated by the test.

d. For spare parts that form part of the ASME Code pressure boundary.

- . perform the actions required in Item Id.

Response 2:

a. , All. spare parts were ordered and- received' af ter 1981. A determination aof when these spare parts were manufactured with the cooperation of HTPC is underway. However, spare parts manuf actured by the HTPC have not been installed on any pumps at Oconee. .,The recommendation given in Attachment 3 of the Bulletin will be implemented inte our proce-dures for the disassembly / assembly of the HTPC Spent Fuel Cooling Pump f

prior to September 16, 1983.

,, b. The following parameters will be checked if the pump-motor assembly has

.,- . been repaired, disassembled for inspection, or if other servicing that

• might. affect pump performance has been performed:

/1 . it:let pressure measurement

2. outlet pressure measurement

3. developed head calculation

! 4. . vibration amplitude measurement

5. bearing temperature .

- The above parameters are checked in accordance with the Code.

c,d. ~ As stated earlier, no spare parts manufactured by HTPC have been instal- ,

led on any pumps at Oconee. The spare parts that will .tna installed are restricted to the HTPC Units 1 and 2 Spent Fuel Coolant pump'and the HTPC pumps.being installed.in the radwaste facility. When required, a pump performance check'will be conducted as specified in Action Item Ic and ld of the Bulletin.

Action Item 3: .

Nuclear reactor facilities _ holding an operating license are to submit a report describing the reuslts of the actions taken or planned for items 1 and 2 within 90 days of receipt of this Bulletin.

Response 3:

See response pro 41ded to Action Items 1 'and 2. An August 16, 1983 letter from Duke addressed tne reason for the delay in our response to this a k

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Bulletin.

Action Item 4:

Nuclear reactor facilities holding an operating license, are to complete the actions requested by Items le and 2c, as applicable, prior to startup from the outage during which the pump or part is installed or, if the pump or part is already installed, before startup from the next refueling out-age.

Response 4:

As stated in the August 16, 1983 letter, the required pump performance test and the 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> endurance test of the Units 1 and 2 Spent Fuel Cooling Pump manufactured by the HTPC, as specified by Action Item ic, were completed satisfactorily prior to startup of Unit 1. Since no spare parts have been installed, actions required by Item 2c are not applicable.

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