ML19338D131
| ML19338D131 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 08/12/1980 |
| From: | Clayton F ALABAMA POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML19338D126 | List: |
| References | |
| 50-364-80-19, NUDOCS 8009190583 | |
| Download: ML19338D131 (5) | |
Text
.
.-#.a
" A __._ a:.. _.. ~
s r
,. *.~
..., Alabama Power Company.
?g
.1
- 800 North 18th Street Post Office Box 2641 -
' Birmingham. Alabama 35291 I
s Teiephone20satwyoHO REGION :1
.tcrLt<NTI., W W /
- F. L CLAYTON, JR.
10 f.UG 20 2 : 10 Alabama Power Senior Vice President -
g,g,3g.12, 1980 inesournem eta:rric system
~ Joseph M.. Farley Nuclear Plant NRC Inspection of June 17-20, 1980
- File: A-35.10.03
-Log:
80-872 Mr. James P. O'Reilly.-
U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W. - Suite 3100 Atlanta, Georgia 30303 Re: RII:WPA 50-348/80 Unit 1 50-364/80 Unit 2
Dear Mr. O'Reilly:
.The inspection report-transmitted by letter dated July 23, 1980 has been reviewed by all concerned parties,- and we do not consider any of the information contained therein to be proprietary.
The noncompliances in'the inspection report are Infractions 348/80-16-02 and 364/80-19-01 and Deficiencies 348/80-16-01 and 364/80-19-02.
The following actions have been taken in response to the inspection report.
348/80-16-02 (Torque Multipliers - Infraction) a 1).
Corrective steps which have been taken and the results achieved.-
Alabama. Power. and our A/E, Bechtel Power Corporation, have been in.
contact with vendors to detemine required installation torques for concrete expansion anchor bolts in Farley. Unit 1 on which it
~
is cuspected a ~ torque multiplier would have been used '(i.e. bolts of:3/4 inch diameter or larger). Alabama Power has also4 initiated testing and analysis to determine the probable error introduced through the improper use of torque multipliers.
Based on preliminary results from these efforts, Alabama Power
- Company believes' that the conservatism present in installation / test
_ 800g190 M1 i
~
OFFICIAL COPV h I,'.
mi
..i 1
^^
j-
l t
1 Mr. James P.10'Reilly NRC Inspection of June 17-20, 1980 Page-2
- August 12, 1980-torque values used.in Alabama Power Company's I.E.B. 79-02 program
-is more than sufficient to offset any errors caused by improper use of torque multipliers. For example, preliminary results for a 3/4 inch diameter Hilti expansion bolt show the following:
a)' The manufacturers recommended torque-value is 100 ft-lbs.
.b) 100, ft-lbs. is ' sufficient to install the bolt and load it to design values assuming a safety factor of 4:1.
c) Alabama Power' Company selected 200 ft-lbs as its installation / testing torque value.
d) The minimum actual torque any of the multipliers would have applied to an anchor bolt when'being used to torque a 3/4 inch bolt to 200 ft-lbs, is 130 ft-lbs which is 30% higher than the torque (100.ft-lbs) required to prove proper installation and design loading.
- 2) Corrective steps which will be -taken to avoid further noncompliance.
Alabama Power Company has purchased new torque wrenches 'specifically for use with the multipliers. These wrenches will measure the actual-torque being applied to the bolt by the torque ~ wrench-multiplier combination.
installation and repair procedures will be -
revised to ensure that or.iy calibrated torque wrench-multiplier combinations will be used in the future.
.3) The date when full compliance.will be achieved.
Alabama Power Company anticipates having design approval of the as-left condition of all' bolts 3/4 inches 'in diameter or larger and' justification for this design approved by September 15, 1980.'
t 4
/
M,4
'N8 M mi=r - & %i% A?
E M*h*'*#*'
. - ~ ~. ~ ~ -.
.~
r j
Mr. James P. 0'Reilly NRC Inspection of June 17-20, 1980 Page 3 August 12, 1980 364/80-19-01 (Torque Multipliers - Infraction)
- 1) Corrective steps which have been taken and results achieved.
Three (3) new torque wrenches which read output rather than input were purchased for use with multipliers. These can be used with any multiplier.
- 2) Corrective steps which will be taken to avoid further noncompliance.
A procedure for matching torque wrench and multiplier so that calibrated reading would result was developed and instructions given for their use.
Reverification of anchors, which are suspect of having been torqued with the inadequate combination, has been started.
- 3) The date when full compliance will be achieved.
The reverification should be comp!ete by September 1,1980.
348/80-16-01 (Hanger Modification Procedure - Deficiencyl
- 1) Corrective steps which have been taken and results achieved.
.PCN 79-409, Rev. 337 was issued to modify hanger CVC-R254. This modification included the installation of a new base plate and four (4) new concrete anchor bolts. ~CWR #1-80-9110 was issued to implement this modification and stated the modification was to be performed in accordance with Construction Procedure 6.1 and Construction QC Procedure 5.4.2.1,. Addendum 1.
Neither of these procedures contains any installation or inspection require-ments for concrete anchor bolts.
The anchor bolts required by PCN 79-409,'Rev. 337 were installed, inspected and documented in
'accordance with Procedure FNP-1-GMP-43 Appendix D, Installation of a Concrete Expansion Anchor in a New Hole in an Existing Hanger Base Plate, except the QC' Inspector completing the data sheet indicated"N0" in the data sheet column entitled
" Installation per FNP-1-GMP-43, Appendix D" and wrote " Test infonnation only" on the face of the data sheet. The reason L
Mr. James P. O'Reilly NRC Inspection of June 17-20, 1980 Page 4 August 12, 1980 given by QC for indicating "N0" on the data sheet was that the procedure title and scope restricted the use of the procedure to installation of concrete anchors in an existing plate, and the installation being documented on CWR 1-80-9110 for hanger CVC-R254 was for anchor bolts installed in a new base plate.
All installation parameters (i.e. anchor type, anchor length, anchor diameter, torque, nut engagement, nut bottoming out and embedment length) for the anchor bolts installed per CWR 1-80-9110 were examined and were satisfactory for Acceptance Criteria given in PCN 79-409, Rev. 337 and FNP-1-GMP-43, Appendix D.
- 2) Corrective steps which will be taken to avoid further noncompliance.
Procedure FNP-1-GMP-43, Appendix D will be revised to include installation of. concrete anchor bolts in new base plates. Any Work Requests issued for PCN's which include anchor bolt installations will require installation per FNP-1-GMP-43 or other appropriate procedure.
- 3) The date when full compliance will be achieved.
Procedural changes should be complete by September 1,1980.
364/80-19-02 (Documentation of I.E.B 79-14 Inspections -
Deficiency) 1st Example, Unrecorded 3/4" Diameter Plug
- 1) Corrective steps which have been taken and results achieved.
This item was added to the list of deviations attached to SK-G12-CV-210 as deviation I.
A Construction Work Request will be issued to cut off the 3/4" plug. This will remove the con-tact with the reactor make-up water piping and clear up deviation I.
- 2) Corrective steps which will be taken to avoid further noncompliance.
3.
Instructions were issued to inspectors to expand the interpreta-tion of inspection and reportable items.
Instructions are to document items which could affect the function or integrity of the pipe system.
-__'W.
6' y :' --
h--"
Mr. James P. O'Reilly NRC Inspection of June 17-20, 1980 Page 5 August 12, 1980
- 3) The date full compliance will be achieved.
Full compliance will be achieved by September 1, 1980.
2nd Example, Hanger Discrepancy and Correction Report 1)
Corrective steps which have been taken and results achieved.
When the deficiency was identified on hanger 2SI-R130 during the inspection, steps were taken to mcord the subject discrepancy on a hanger discrepancy and correction report form. This report was placed in the 2SI-R130 hanger package in lieu of the memo tablet sheet that had been used.
- 2) Corrective steps which have been taken to avoid further noncompliance.
Since the point in time when the deficiency was identified, all hanger discrepancies have been recorded on the hanger discrepancy and correction report fann as required by QCP 5.4.2.1. Addendum 1.
- 3) The date full compliance was achieved.
Full compliance was achieved on the date the deficiency was.
icienti fied.
Very trulyyrs, u
F. L. Clayton, Jr.
cc: Mr. W. H. Bradford Mr. M. D. Hunt d
t,
-