ML20040C468
| ML20040C468 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 11/13/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-SSINS-6820 IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8201270681 | |
| Download: ML20040C468 (4) | |
Text
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TENNESSEE VALLEY AUT[HgfjtgY?EQ ON CH ATTANOOG A, TENNESSEC If40b
^
400 Chestnut Street Tower II 13,3)8l10V W November 0)
Mr. James P. O'Reilly, Director g
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission S
RECfWED Region II - Suite 3100 4
JAN 261
$ "Ng$25 101 Marietta Street 7
h Atlanta, Georgia 30303
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Dear Mr. O'Reilly:
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0FFICE OF INSPECTION AND ENFORCEMENT BULLETINS 79-02 AND 79 BROWNS FERRY NUCLEAR PLANT UNIT 1 259 In an August 7, 1981 telephone conversation with members of your staff, TVA was requested to provide the results of the evaluations performed upon completion of each unit's inspections for the subject bulletins.
In response to this request, the enclosed table summarizes the resolution of all significant discrepancies discovered during the Browns Ferry unit 1 inspections. As indicated in this table, all safety problems discovered to date have been corrected, and other discrepancies have been scheduled for resolution.
If you have any questions, please call Jim Domer at FTS 858-2725.
To the best of my knowledge, I declare the statements contained herein are complete and true.
Very truly yours, TENNESSEE VALLEY AUTHORITY JL
[ ')vk C.' M. Mills, Manager Nuclear Regulation and Safety Enclosure cc: Office of Inspection and Enforcement (Enclosure)
Division of Reactor Operations Inspection U.S. Nuclear Regulatory Commission Washington, DC 20555 ffIE7Eb"'agggy a
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L RESOLUTIONS FDR SIGNIFICANT DISCREPANCIES BROWNS FRRY PECI. EAR PLANT UNIT 1 (See Footnotes at End of Table)
Initial Evaluation Problem Erstnetton Af ter 30-Day Analysis Propo se d Problea N9ahir System Descrintion (Catenorv)*
(Catcaory)
Renointion**
i 1217-004 EECW Support design problem 3
2 Design and install aditional supports 0428-015 EECW Support placement 3
4 Adequate as built problem 0610-001 EECW Gang support has missing 1
Not required Install per design C
restraint 1014-02 EECW Restraint R-43 conid not 3
3 Redesign restraint North be load qualified Hender 0904-01 EECW R-47 not installed 1
Not required Install as designed C
correctly 101080-001 EECW 8 Anchorage of piping in 1
2 Install redesigned restraints RRRST service water tunnel and anchors 101180-001 EECW 8 Leakage of coupling due 2
2 Redesign restraint RHRST to preload by restraint 0821-001 RHR5W R-5 not installed per 1
Not required Install per design, with minor C design modifications 0821-002 RHRSW Broken supports 1
Not required Install to design condition.
C Vibration problem resolved.
0415-001 RERSW Damaged spring 2
Not required Readjust. Replace missing and damaged component s.
e 0821-02 RRRSW Loss of asial restraint 1
Not required Install per design, with minor C for R-8, R-18, R-19 modifications 1128-002 RHRSW R-16 could not be load-1 2
Redesign restraint qualified 0325-01 RHR.
Lack of thread engage-3 3
Install per design sent on snubber R-8 0910-001 RER H 308 installed as guide 1
Not required Install as 3-way restraint to C proteet penetration C= Complete 1
1
1 D
Initial Evaluation Problem Evaluation Af ter 3D-Day Analysis Propo se d Problem Nnmber System Descrintion (Catenerv)*
'(Catenore)
Resointion**
l 0315-001 RER Restraint B 268 over-1 Not regstred Install per design C
toaded 0331-018 RHR Possible design problem 3
4 Adegaste as butit 061281-004 RER Restraint on RER ' pump 3
Not required Reevainste, with pamp carrying suction pcssible over-load load 0106-001 RBCCW Nissing restraints 1
2 Install missing restraints 0113-001 RBCCW Nissing restraints 1
Not required Install missing restraints C
0125-004 RBCCW Support NK 31 not 2
Not regnired Add missing member installed per desigu 0125-06 RDCCW Lack of axial restraint 3
Not required Brace to provide rigid asial for NK 34 pipe restraint 0814-002 RWSPD H 294 designed as 3-way 1
Not required Install as 3-way restraint to C but installed as guide protect penetration 0112-001 RWSPD Missing restraints 3
2 Design and add restraints per j
.analyste j
0220-008 RWSPD R-10 will not qualify to 1
Not required Redesign the support C
l design loads l
0509-002 RCIC Loose anchor bolts and 2
4
_ Support adequate as built l
questionable analysis 0315-003 HPCI Lugs displaced relative 2
4 Nodify Ings and correct conse l
to restraint'R-2 122380-01 Nech.
Support E-4 and UD-2 3
3 Install UB-2 Inerting missing 111980-01 Not Test line RB penetration 1
Not required Design and install moment C
Applicable design does not appear restroint for the pipe in the to be adequate penetration similar to units 1 i
.and 3 0315-002 RER Lugs displaced relative 2
4 Nodify Ings, repair damage, to restraint R-1.
Damage correct cause 091080-001 CRD Restraint design and 2
2 Redesign restraint system Scram Header Placement C= Complete u_
a 1
- Category 1.
Unacceptable. Technical specifications give schedallas of changes. The analysis /evalmation indicates that there is a definite potential for loss of pressere boundary, loss of containment seal, or other such as improper slope or a missing valve, which has an anacceptable effect on plant safety conse quence,
or system function. The effect on plant safety is determined by a safety review.
Temporarily approved - Priority 1.
Changes w!!! be made as soon as feasible. (The analysis / evaluation
- Category 2.
indicates that changes shon1d be given priority over those indicated in ca*-:*ory 3.)
l
' Category 3.
Temporarily approved - Priority 2.
Changes w!!! be made on a normal schedule. (The analysis / evaluation indicates that changes may be made on a normal schednie.)
- Category 4 Field changes not required. (The analysis / evaluation indicates that itensified stresses in the as-built configuration do not exceed code allowable stresses.)
- Except for Evaluation Category 1, the resolution is pending code complisace analysis, i
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