ML20098G674

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Responds to IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers. No Evidence of Outside or Inside Vent Header & Nitrogen Penetration Cracking Found.Addl Insps & Evaluations Will Be Performed
ML20098G674
Person / Time
Site: FitzPatrick Constellation icon.png
Issue date: 10/01/1984
From: Bayne J
POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To: Vassallo D
Office of Nuclear Reactor Regulation
References
IEB-84-01, IEB-84-1, JPN-84-61, TAC-54150, NUDOCS 8410050314
Download: ML20098G674 (10)


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4# Authonty ~~ c-October 1, 1984 JPN-84-61 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Mr. Domenic B. Vassallo Operating Reactors Branch No. 2 Division Of Licensing subject: James A. FitzPatrick Nuclear Power Plant Docket No. 50-333 IE Bulletin No. 84-01 Mark I containment Vent Headers

References:

1. NRC IE Bulletin No. 84-01, " Cracks In Boiling Water Reactor Mark I Containment Vent Headers,"

dated February 3, 1984.

Dear Sir:

On September 7, 1984, one week prior to a scheduled outage, we were notified that a written report on the s' abject Bulletin was required immediately.

Attachment I provides our response as requested. This response has been delayed due to the demands of the outage as well as of other current licensing activities.

It should be noted that on April 27, 1984 the Authority received a request for either an oral or a written report. We provided an oral report at that time, and submitted copies of visual inspection reports.

It should also be noted that while the FitzPatrick facility was not'in cold shutdown when the Bulletin was issued, and no action was required, nevertheless, a review of the Bulletin and related documents was initiated, and various evaluations, procedure revisions and extensive visual inspections were undertaken.

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.If there are'any questions, please 'do not hesitate to call Mr.

J. A. Gray, Jr . - of my staff.

-Very truly yours, f

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i First Executive Vice President Mhief- operations officer

~cc:' Office of the Res'ident Inspector

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..U.S._ Nuclear Regulatory Commission P.O. Box 136

Lycoming, New York 13093 9

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4 New York Power Authority James A'. FitzPatrick Nuclear Power Plant Attachment I JPN- 84-61 a

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A. ; IE ' Bulletin No. > 8 4-01: .

-Actions-to be taken by all BWRs having Mark I Containments and Currently Shutdown:

, l.- Plants that are_ currently in cold shutdown should a visually. inspect for cracks in the entire-vent header Land in the.mainLvents in the region near the intersec-tion with the vent header. To.the. extent practicable, theLinspection should include the entire surfaces of 7the aforementioned components. The inspection should-be completed within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> of receipt of this

-bulletin.

2. If cracks._are found, the containment should be declared inoperable.

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3. 1The results of the inspection are to be reported by telephone to NRC-Operations Center within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> after.thecinspection has been completed. A written report' describing the areas inspected and the results should be submitted within seven days of receipt of the bulletin.

~

-Response to IE Bulletin No. 84-01 The' James A.LFitzPatrick Nuclear Power Plant was operating when-]UE Bulletin No. 84-01,(IEB-84-01) was issued. Accord-ingly,- it was not practical to : inspect the vent header or main = vents-in the region near'the intersection with the vent header at that time..

.B. -Other-inspection activities performed or planned:

While it was not practical to perform an immediate inspec-

. tion of the vent header and related structures and com-ponents~as suggested by IEB-84-01, the FitzPatrick plant staff. initiated review and/or-evaluation of IEB-84-01 and other related documents-under the: Plant Operating Experience Review Program shortly after they were received at the JAF plant. These related documents are IE.Information Notice 84-17,fINPO'SER.14-84 and GEJSIL 402.

cAs a result of the IEB-84-01 (and the related documents.

.noted:above), the:following evaluations, inspections, and procedure revisions have been completed or will-be completed

-by the,indiccted date.

1.. An evaluation of drywell to suppression pool differen-

tial' pressure was conducted to verify that no signifi-cant leakage from the drywell to the suppression pool was present.

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2. On March 2, 1984, the JAF plant was shut down for scheduled maintenance and modification. During this shutdown period, a visual examination was conducted as indicated below:-

-Outside of Vent Header. .The entire top surface of the vent header was inspected. including girth and attach-ment welds. .The nitrogen penetration is in the center.

of bay 0, and bays P and A are adjacent to bay O. In bays P,10, and A, the pipe surface and all associated weldments were. inspected approximately 220' around the vent. header starting at 2 o' clock and moving counter-clockwise to 6 o' clock. One-half of.the down-comer to vent header attachment welds in bays P, O, and A, were also inspected.

.Inside of Vent Header - The entire inside surface of the vent header in bays P, O, and A were inspected.

~T his included all girth welds and all downcomer to vent header attachment weldments.

Nitrogen Penetration - The suppression pool (wetwell)

I.D. side of the nitrogen penetration to suppression pool shell weldment, and the suppression pool

. plate materials (approximately 12" all around the penetration)'were inspected.

'No evidence of cracking was discovered during any of the above inspections. Since none of the original

(construction)' examinations included ultra-sonic test-

.ing (UT), no UT baseline exists. Accordingly, no UT examinations are planned.

3.. An' evaluation of the inerting system has been con-ducted. As a result of this evaluation, the applicable

' procedures have been revised to provide assurance _that cold gaseous (or liquid) nitrogen is not introduced into the inerting system or into containment components

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which are not' designed for low temperature operation.

4. A surveillance procedure to test operation of the low tamperature isolation: function will be implemented by October 10, 1984.
5. Periodic calibration of temperature switches and indi-cation to assure proper operation of the low tempera-ture isolation, and provide the operator with reliable temperature indication, will be implemented by October 10, 1984.
6. During the next scheduled primary containment inte-grated leak rate test, a drywell to suppression pool (wetwell) bypass leakage test will be conducted. The

' test is currently scheduled for the end of the 1985 Refueling Outage.

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-- MARCH 8, 1984 _

JAF-QF-84-030

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MEMORANDUM TO: Superintendent of Power FROM: R. Patch

SUBJECT:

JAFNPP Quality Assurance visual Inspection of Torus Ring Header _. , . , , , .

REFERENCE:

JOC-84-006 (2/23/84) Visual Inspection of Torus Ring Header As requested in the referenced memorandum, a visual inspection of the torus ring header was performed on 3/4/84. The inspections were performed by C. Krok, P. Morris, and R. Patch. The areas inspected are as follows:

Outside of Ring Header - The entire top surface of the ring header was inspected including girth and attachment welds. In bays F, 0, and A, the pipe _ surface and all associated weldments were inspected approximately 220' around the header starting at 2 o' clock and moving counter-clockwise to 6 o' clock. One-half of the downconer to ring header attachment welds in bays P, 0, and A, were also inspected.

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Inside of Ring Header - The entire inside surface of the ring header in bays P, O and A were inspected. This includes all girth welds and all downcomer to ring header attachment weldments.

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Nitrogen Penetration - The torus I.D. side of the nitroger: penetration to torus shell attachment weldment and..the torus plate materials approximately 12" all around the penetration. _

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Conclusion:

No W idence of cracking was discovered during any of the above ,

inspections.

l Miscellaneous Observations: During the above inspections it was noted that tools and other loose debris were laying inside the vent header piping. The ,

, outside of the vent header piping in the area adjacent to the nitrogen penetra tion entrance to the torus is exhibiting considerable surface rusting.

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[L ~%CiHEK2tANDUM.;TOtC SUPERINTENDENT' OF POWER - . ._~ -MARCH 8, 1984 i

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JAF-QF-84-030 ' 7

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" ~~ VISUAL INSPECTION OF 'IORUS ~ RING HEADER PAGE '1HO  ?

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SUBJECT:

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The inspection will be formally documented in an Inspection Report to be issued in accordance with the requirements of the Nondestructive Examination Procedures, but this memo is being written to advise you that the results of the j f

inspection were satisfactory. b-If you have any questions regarding this memo, please contact the writer. .

  1. da / /d Richard L. Patch ~~" " *~ - ,

QA Supt. in Training '

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OCCURRENCE REPORT

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