IR 05000250/1993011
| ML17349A862 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 05/07/1993 |
| From: | Blake J, Kleinsorge W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML17349A861 | List: |
| References | |
| 50-250-93-11, 50-251-93-11, NUDOCS 9305250031 | |
| Download: ML17349A862 (15) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION R EG ION I I 101 MARIETTASTREET, N.W.
ATLANTA,GEORGIA 30323 Report Nos.:
50-250/93-11 and 50-251/93-11-Licensee:
Florida Power and Light Company 9250 West Flagler Street Miami, FL 33102 Docket Nos.:
50-250 and 50-251 Facility Name:
Turkey Point 3 and
Inspection Conducted:
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Inspector:
W ~'.
i orge Rek or s
r License Nos.:
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'Approved by:
J. J.
la
- Chief Hate ialq and Process Section En neering Branch Division of Reactor Safety SUMMARY Date igne Scope
This routine, announced inspection was conducted in the areas of Inservice Inspection (ISI), and Flow Accelerated Corrosion (FAC).
Results:
In each of the areas examined, the inspector discovered that nondestructive test (NDE) examiners have conducted conservative examinations in accordance with the appropriate test procedures.
NDE procedures'ere also noted to be very detailed, well organized and technically effective in implementing,.the applicable code requirements.
Supervisors, engineers, and NDE examiners contacted during this inspection were very knowledgeable in their areas of responsibility.
With the exception of a few minor discrepancies,.
ISI records reflect the accomplishment of ISI activities consistent with procedural and regulatory requirements.
The licensee FAC program continues to maintain high energy carbon steel piping systems within acceptable wall thickness limits.
In the areas inspected, no violations or deviations were identified.
9305250031 930518 PDR ADQCK 05000250
PDP
e, Persons Contacted REPORT DETAILS Licensee Employees I
- T. Abbatiello, Site guality Manager
- R. Kundaikar, Engineering Manager
- L. Motley, Supervisor Code Programs ESI
- C. Howrey, Licensing
- L. Pearce, Plant General Hanager
- R. Turner, ISI Specialist
- E. Weinkam, Licensing Manager Other licensee employees contacted during this inspection included engineers, mechanics, technicians and administrative personnel.
NRC Resident Inspectors
- R. Butcher, Senior Resident Inspector (SRI)
- L. Trocine, Resident Inspector (RI)
- Attended exit interview 2.
Acronyms and initialisms used throughout this report are listed in the last paragraph.
Inservice Inspection (ISI)
The inspector reviewed documents and records, and observed activities, as indicated below, to determine whether ISI was being conducted in accordance with applicable procedures, regulatory requirements, and licensee commitments.
The applicable code for -ISI, for Units 3'nd 4 is the ASME BLPV Code,Section XI, 1980 Edition with Addenda through Winter 1981 (80W81).
Unit 3 is operating in the third 40 month period of the second ten year interval (P3, I2) ending February 21, 1994.
Unit 4 is in refueling outage (RFO)
14, the second and last outage of the third 40 month period, of the second ten year interval (02,P3, I2) ending April 14, 1994.
Unit 3 received its Operating License July 19, 1972, and commenced commercial operations on December 14, 1972.
Unit 4 received its Operating License on April 10, 1973, and commenced commercial operations on September 7,
1973.
The licensee's nondestructive examination (NDE)
personnel, augmented by contract personnel from EBASCO, are performing liquid penetrant (PT), magnetic particle (HT), visual (VT), radiographic (RT),
and ultrasonic (UT) examinations.
Steam Generator (S/G) tubing eddy current (ET) examination data acquisition and analysis is being accomplished by the licensee's nondestructive examination personnel, augmented by contract personnel from Assea Brown Boveri Combustion Engineering,(ABBCE),
Zetec, Master-Lee (H-L), and Allen Nuclear Associates Inc.
(ANA). All the above activities are being accomplished under the umbrella of the FP&L guality Assurance (gA) Progra i
a.
ISI Program Review, Un'its 3 and 4 (73051)
The inspector reviewed the following documents relating to the ISI program to determine whether the plan had been approved by the licensee and to assure that procedures and plans had been established for the applicable activities.
Procedures were also reviewed for technical content.
Procedures Reviewed ID Revision Title ESI-ET-93-02
- 1/29/93 April 1993 Examination Plan for Steam Generator Tubing at Turkey Point Unit 4 b.
Review of NDE Procedures, Units 3 and 4 (73052)
The inspector reviewed the procedures listed below to determine whether these procedures were consistent with regulatory requirements and licensee commitments.
The procedures were also reviewed for technical content.
Procedures Reviewed ID Revision Title FP&L NDE 1.3 (R5)
Eddy Current Examinations of Non-Ferromagnetic Tubing with Multi-Frequency Techniques HIZ-18 FP&L (9/92)
ECT Data Analysis Guideline and Performance Demonstration FP&L NDE 3.3 (R4)
Liquid Penetrant Examination Solvent Removable Viable Dye Technique Ultrasonic Examination of Reactor Coolant Pump Flywheels Ultrasonic Examination Technique for The Evaluation of Cracking in Feedwater Piping FP&L TS 9.3 (Rl)
Radiographic Inspection Procedures were well written and appropriate for their intended applicatio Observation of Work and Work Activities, Unit 3 (73753)
The inspector observed active work activities and reviewed records of work activities, reviewed certification records of NDE equipment and materi,als, and reviewed NDE personnel qualifications for personnel who had been utilized in the ISI examinations during this outage.
The reviews conducted by the inspector are documented below.
Work Activities Observed The inspector observed the UT examination of 4-LDHX-2 (Excess Letdown Heat Exchanger)
head to flange weld, including the calibration activities.
The inspector observed the HT examination of integral attachment weld 178102B-H-422-031A on Steam Generator Blowdown piping.
The inspector performed an independent evaluation of the indications obtained to confirm the NDE examiner's evaluation.
The inspector observed the PT examination of 8" SI-2408 weld Nos.
16, 17, and 18 in the Safety Injection system.
The inspector performed an independent evaluation of the indications obtained to confirm the NDE examiner's evaluation.
The inspector independently examined eight studs and sixteen nuts on flange connection 2"-CH-1405-FBI in the Chemical and Volume Control system, to evaluate the indications obtained and to confirm the NDE examiner's evaluation.
The licensee RT examined nozzle to safe end weld RC-1406-lA in vice of UT, because of UT access limitations.
The inspector reviewed the radiographs for film quality and acceptability.
The radiographs are acceptable to ASHE B&PV Code section III Division 1.
The inspector noted the, following related to the RT examination:
o The licensee's ISI program does not address the implementation of RT as a volumetric examination method.
The licensee indicated that they would take appropriate actions to address this matter.
FP&L Procedure TS 9.3, Revision 1, "Radiographic Inspection" dated February 2, 1984, contains acceptance criteria in the form of graphical representations of indications.
Because of the age of the procedure and the number of times the procedure has been reproduced, artifacts (black spots)
have appeared on the pages containing graphical representations of indications and potentially added to the number of acceptable indications in the acceptance criteria (thus reducing the rigorousness of the acceptance criteria).
It should be noted that this issue does not reflect on the acceptability of weld No. RC-1406-1 The licensee indicated that they would take appropriate actions to address this matter.
The inspector observed ET data acquisition and analysis activities.
The licensee performed a
100% bobbin coil examination of the non-plugged tubes in all three generators.
Rotating Pancake Coil (RPC)
examinations were performed on 242 tubes at the top of the tube sheet for over expansion characterization in the "C" S/G, and one tube each, in the
"C" hot and cold legs, were RPC examined for flaw characterization.
No tubes were plugged in any of the three generators as indicated below.
Steam Generator Tube Plug Summary U4 S/G NAII
$/G IIBII S/G NQM Tubes Previously Plugged
Tubes Preventively Plugged RFO
0 Tubes Plugged RFO
&0%
Total Tubes Plugged
Degraded Tubes RFO
(20-39%)
Total Tubes Examined 3198 3206 3205 The examinations were performed properly in accordance with regulatory and procedural requirement PT Examination Records Reviewed PT reports reviewed:
3.3-1 to 3.3-23 Relative to the PT examinations, the inspector reviewed certification documentation for the following PT materials (penetrant cleaner and developer),
and thermometers.
Relative to the examination of PT records the inspector noted the following:
Penetrant Materials Penetrant:
92A05P Cleaner/Remover:
92ElOK, 92JOIK, 93COlP Developer:
91B02P Thermometers S/N:
93-018)93-016)
93-011)93-002 The inspector reviewed qualification, certification and visual acuity documentation for the following PT examiners.
PT Examiners BB PT-IT WH PT-II MDR PT-III PHV PT-II WWH PT-II RBS PT-I SPC PT-II RH PT-II BJF PT-II DRR PT-II
Level I PT examiner JV, appears on a number of PT examination reports.
The licensee has no PT level I certification for this individual. It should be noted that on each record that JV was indicated, those records also indicate a properly certified Level II PT examiner.
Therefore there is no question as to the validity of the PT examinations.
The licensee indicated that they would take appropriate actions to address this matter.
MT Examination Records Reviewed HT reports reviewed:
2.2-1 to 2.2-3 Relative to the HT examinations, the inspector reviewed certification documentation for the following HT Yokes, dry powder, and ten Lbs. test weights.
Relative to the examination of MT records, the inspector noted the following:
o There was some confusion in the identification of the ten Lbs.
test weight on the MT reports.
The licensee indicated that they would take appropriate actions to address this matte Yokes ELO 110 S/N FPL HT-4 B310 S/N 205 Dry Powder Magnaflux 8A Red Batch No.91E057 Ten Lbs. Test Weights
.14B The inspector reviewed qualification, certification and visual acuity documentation for the following HT examiners.
HT Examiners SPC HT-II DMG HT-II WH HT-II VT Examination Records Reviewed VT reports examined:
4. 1-3 4.3-1 to 4.3-26 4.3-28 to 4.3-68 4.4-1 to 4.4-3 Relative to the VT examinations the inspector reviewed qualification, certification and visual acuity documentation for the following VT examiners.
VT Examiners DRR VT1-II, UT38L4-II HDR VT1-III, VT3-III UT Examination Records Reviewed UT reports examined:
5. 1-1 and 5.4-1 Relative to the UT examinations the inspector reviewed certification documentation for the following UT calibration blocks, UT instruments, and complement.
Relative to the examination of UT records the inspector noted the following:
o The method of identifying UT instrument serial numbers and model numbers was not consistent.
UT Calibration Blocks UT-7, UT-27, UT-41
UT Instruments S/N:
27276-1078, 136-700I, 136-301-D Couplant Ultragel II batch No.
93001 The inspector reviewed qualification certification and visual acuity documentation for the following UT examiners.
UT Examiners SPC UT-II JV UT-I DMG UT-I WH UT-II ET Examination Records Examined MDR UT-III The inspector reviewed selected data acquired for all three
'enerators.
The inspector reviewed certification documentation for the following Remote Data Acquisition Units (RDAUs), and calibration standards.
RDAU Certifications Examined S/N:
060, 066, 094, 201, and 202 Calibration Standard Certifications Examined S/N: Z-1546, Z-1544, Z-3455, Z-10445, Z-10447, and AV-Z-5762 The inspector reviewed qualification certification and visual acuity documentation for the following ET examiners.
ET Examiners FPKL GTB ET-IIA WKH ET-III DAL ET-IIA AM ET-IIA ABBCE AP ET-IIA RLD ET-II DPF ET-IIA RSM ET-III AWA ET-I ERE ET-IIA JFJ ET-IIA MS ET-IIA GSB ET-III HGE ET-II HL ET-III TS ET-IIA END ET-II JAF ET-IIA PKL ET-I LAA ET-IT SWF ET-I LTP ET-IIA SDS ET-I
ANA GDD ET-II MAJ ET-II WMW ET-I IA DDM ER-I RAS. ET-II Zetec PAA ET-IIA DJC ET-IIIA WAG ET-IIIA DHI ET-IIIA RAN ET-II IA CDS ET-IIIA Relative to ISI records for all methods, the inspector noted a
number of examples where corrections were initialed but not dated contrary to FPKL's procedural requirements.
The inspector observed the author affect corrections.
Augmented S/G Feedwater piping inspections As a result of NRC Bulletin 79-13, the licensee UT examines the 18" S/G Feedwater nozzle-to-reducer welds of each S/G at each refueling outage.
Late in the day, Thursday, April 29, 1993, the licensee notified the inspector that they identified circumferential linear indications in all the S/G Feedwater nozzle-to-18"xl4"reducer welds.
The cracks were determined to be emanating from the counterbore-to-taper transition in the reducers, propagating into the nozzle base material from the pipe inside diameter.
The licensee characterized the indications as follows:
S/G Maximum Through Wall A
80%
70%
Maximum Indication Length 12" 20n Characterization Large Indication Top, Intermittent Indications 360'arge Indication Top, Intermittent Indications 360'0%
Not reported Intermittent Indications 360't the time of the inspection, the UT data was not available for NRC review.
The licensee informed the inspector that they intended to replace all three 18" x 14" reducers during this outage, and that they expected work to begin approximately May 7, 1993.
Within the areas examined, no violations or deviations were identified.
3.
Flow Accelerated Corrosion (FAC) (49001)
The licensee has established a FAC'inspection program which implements the CHECMATE EPRI (Electric Power Research Institute) computer code, industry experience, and previous inspection data as predictive tools for
determining and prioritizing inspection locations.
The inspector conducted interviews with licensee and contractor personnel and revie'wed procedures indicated below.
Procedures Reviewed ID-Revision JPN-ESI-E/C-100 (RO)
Title Corporate Long-Term Erosion/Corrosion Honitoring Program Observations/Findings During RFO 14, the licensee planned to examine 115 components in their FAC program.
At this writing the licensee has identified 23 components for replacement:
19 planned from previous outage examinations and nine as a result of examinations this outage.
The sample has now expanded to 138 components, and examination continues.
To date, the licensee has not used the T-Dat portion of the CHECHATE program and therefore has missed out on the iterative benefits built into the program.
T-Dat has now been incorporated in the corporate program to be implemented on a case by case basis.
The licensee indicated that they would start implementing T-Dat with the Unit 4 RFO 14 data.
The calculations used in the FAC program had not been proceduralized.
The calculations are now incorporated in the corporate program.
The remaining life of components was not calculated in the past.
This calculation if done would have provide an effective means to schedule reinspection of components to achieve maximized results.
Remaining life calculations are included in the corporate program, but to date there is no mechanism established to track the data to make it useful.
Notwithstanding the'bove the licensee has established an apparently effective program to maintain high energy carbon steel piping systems within acceptable wall thickness limits.
Within the areas examined, no violations or deviations were, identified.
Exit Interview The inspection scope and results were summarized on April 30, 1993, with those persons indicated in paragraph 1.
The inspector described the areas inspected.
Although reviewed during this inspection, proprietary information is not contained in this report.
Dissenting comments were not received from the license e
, 5.,
Acronyms and Initial i sms
ABBCE ANA ASHE BKPV DPR ET EPRI FAC FP&L ID ISI H-L HT NDE No.
NRC P.E.
RDAU RFO RI RPC RT S/G SRI UT VT Assea Brown Boveri Combustion Engineering Allen Nuclear Associates Inc.
American Society of Hechanical Engineers Boiler and Pressure Vessel Demonstration Power Reactor Eddy Current Electric Power Research Institute Flow Accelerated Corrosion Florida Power and Light Identification Inservice Inspection Haster-Lee Hagnetic Particle Nondestructive Examination Number Nuclear Regulatory Commission Professional Engineer Liquid Penetrant Quality Assurance Revision Remote Data Acquisition Unit Refueling Outage Resident Inspector Rotating Pancake Coil Radiography Steam Generator Senior Resident Inspector Ultrasonic Visual