ML20003H416
| ML20003H416 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 04/16/1981 |
| From: | Crouse R TOLEDO EDISON CO. |
| To: | Norelius C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20003H414 | List: |
| References | |
| 1-195, NUDOCS 8105050820 | |
| Download: ML20003H416 (3) | |
Text
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s-J TOLEDO
%ss EDISON Docket No.,50-346 P Ce V(e Pres 4e n License No. NPF-3 N~
(419:259 5221 Serial No. 1-195 April 16, 1981 Mr. C. E. Norelius, Acting Director Division of Engineering and Technical Inspection U. S. Nuclear Regulatory Commisc cri 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Norelius:
This letter is in response to the NRC letter dated March 25, 1981, on the ASME Section 11 Pump and Valve Program violations as applicable to Davis-Besse Nuclear Power Station Unit 1.
Attached is Toledo Edison's required 25 day response.
Yours truly, f f b,
s-RPC/TDM/ECC/lj k Attachment cc:
D-B NRC Resident Inspector 8105050%2O THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO. OHIO 43652 App 2 01981
ATOMIC ENERGY ACT OF 1954 SECTION 182 SUBMITTAL IN RESPONSE FOR THE DAVIS-BESSE NUCLEAR POWER STATION UNIT 1 FACILITY OPERATING LICENSE NPF-3 4
This response is submitted in conformance with Atomic Energy Act of 1954, Section 182 relating to Mr. C. E. Norelius's letter of March 25, 1981. This deals with the failure of certain insersice pump test instrumentation to meet range and/or accuracy requirements; failure to measure inlet pressure before pump startup and e9tablish reference valves for inlet pressure for inservice testing of contain-ment spray pumps.
By
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Vice President, Nuclear i
Sworn to and subscribed before me this f&.
%fw Notary Public ANNA MAE FERGUSON Notary Pubile - State of Ohio My Commission Expires Oct. 7,1981 1
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RESPONSE TO INSPECTION REPORT 50-346/81-05 V
Docket No. 50-346 Within twenty-five days of the date of this Notice, a written statement or explana-tion in reply, including for.each item of noncompliance:
(1) corrective action taken and the results achieved; (2) corrective action to be taken to avoid further noncompliance; and (3) the dcte when full compliance will be achieved.
Item 1: ASME Section XI, Article IWP-3000 paragraph IWP-3100 requires measurement of pump inlet pressure before pump startup, while paragraph IWP-3110 re-quires the establishment of reference values for pump inlet pressure.
Contrary to the above, the monthly inservice test for containment spray pumps 1-1 and 1-2 does not include measurement of pump inlet pressure before pump startup, nor have reference values for pump inlet pressure been established.
Response: A modification to surveillance test procedure ST 5062.01, Containment Spray Monthly Test was made on April 3, 1981 to add a step in the con-tainment pump pre-start checklist to measure the pump suction pressure.
A modification to the same procedure was made on April 8, 1981 to add the pump suction reference value to the pump test.
Even though the pump inlet pressure had not been measured before pump startup, adequate pump suction pressure had always been ensured by verifying proper valve lineup to the BWST (Borated Water Storage Tank) and having an operable BWST (which ensures a minimum level that also meets containment spray NPSH requirements).
Item 2: ASME Section XI, Article IWP-4000, paragraph IWP-4110 " Quality" specifies nominal instrument accuracies of +2% of full scale for pressure measurement, while paragraph IWP-4111 " Range" specifies a maximum permissible full scale range of not greater than four times the reference value of the measured parameter.
Contrary to the above, certain of the instruments used for the accumula-tion of pump test data do not meet the accuracy and/or range requirements specified.
Response: The instruments in question will be replaced with those that do meet the requirements as stated above under Maintenance Work Order (MRO) IC-351-81.
The instruments are now under order and should be installed within 30 days of the receipt of these instruments. Therefore, this corrective action should be completed by mid-June.
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