IR 05000528/1987035
| ML17303A688 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/05/1987 |
| From: | Richards S, Wagner W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| Shared Package | |
| ML17303A687 | List: |
| References | |
| 50-528-87-35, NUDOCS 8711190196 | |
| Download: ML17303A688 (10) | |
Text
0 U.
S.
NUCLEAR REGULATORY COMMISSION
REGION V
Report No. 50-528/87-35 Docket No. 50-528 License No.
NPF-41 Licensee:
Arizona Public Service Company P.
0.
Box 21666 Phoenix, Arizona 85036 Facility Name:
Palo Verde Nuclear Generating Station Unit 1 Inspection at:
Palo Verde Site, Wintersburg, Arizona Inspection Conducted:
October 19-27, 1987 Inspector:
Approved by:
~Summar:
. Wagner, eac or Inspector S.
Richards, Chief Engineering Section Da e gned Date Signed Ins ection on October 19-27 1987 Re ort No. 50-528/87-35 P
of Inservice Inspection (ISI) activities.
NRC Inspection Procedures 30703, 73051, 73052, 73753 and 73755 were covered during this inspection.
Results:
In the areas inspected, no violations of NRC requirements or deviations were identified.
P,DOCZ 0>oo
$ $ 90ie6 87><os PDR PDR
DETAILS 1.
Persons Contacted Arizona Nuclear Power Pro ect ANPP
"T. Shriver, Compliance Manager
"R. Baron, Compliance Engineer
"D. Morrow, Compliance Engineer
"L. Souza, Manager, equality Audits and Monitoring
- R. Kropp, Technical Engineering Supervisor
"D. Hansen, Lead ISI Engineer J.
Matteson, equality Monitoring Supervisor B. Strickler, Senior Mechanical Engineer (ISI)
A. Morrow, Operations Engineer (ISI)
Denotes those personnel in attendance at the exit meeting on October 23, 1987.
The inspector also held discussions with other licensee and contractor personnel involved with Inservice Inspection activities.
~
Inservice Ins ection - Review of Pro ram Pr o ram A
royal The Inser vice Inspection (ISI) program plan was submitted to the NRC:NRR for review and approval in licensee letter ANPP-33266-EEVB/KLM of August 26, 1985.
The NRR response to this submittal is contained in Safety Evaluation Report (SER) Supplement No.
9 of December 12, 1985.
The SER response was a preliminary conclusion stating that the sample of welds and component supports selected for inservice examination significantly exceeds the requirements of ASME Code Section XI, 1980 Edition, including addenda through Winter 1981.
During this inspection NRR informed the inspector that the ISI program was approved for all three Palo Verde units with the exception of relief request number two; and that the approval letter was forthcoming.
The Unit 1 ISI plan is described in a document entitled "Inservice Inspection Program Summary Manual" Program No. ISI-1, Revision 0, of May 10, 1985.
The ISI program review was documented on a cover sheet which indicated the following:
a technical review, Engineering Manager's approval, Authorized Nuclear Inservice Inspector's (ANII) concurrence, and the Plant Review Board's approval.
The ANII services were procured from the Kemper Group under the Lumbermens Mutual Casualty Compan '2 b.
Pro ram Or anization Administrative Procedure No.
73AC-OZZ10 entitled
"ASME Section XI Inservice Inspection,"
Revision 2, of March 30, 1987, establishes the methods for preparing, controlling and implementing the ISI program.
This procedure requires the ISI program summaries (plans and schedules)
to be submitted to the NRC at least 90 days (or as required by the operating license) prior to the first refueling outage for each specific unit.
This procedure also defines the responsibilities of the persons involved with the final evaluation and acceptance of the ISI results.
This information is documented in the "ISI Summary Report".
Section 5.6. 1 requires the following records to be stored and maintained for the life of the plant:
ISI Program Summaries, ISI Summary Reports, all Examination Data Sheets and associated material, and equipment and personnel certifications.
The licensee's repair and replacement program is addressed in Administrative Procedure No. 30AC-9ZZOl,'ppendix G.
Appendix G
meets the requirements for a Repair Program as specified in Article IWA-4000 of the ASME Code Section XI, and IWA-7000 for a Replacement Program.
Administrative Procedure No.
73AC-OZZ21, entitled "gualification and Certification of NDE Personnel,"
Revision 4, of April 13, 1987, establishes the qualification, training, certification, and recertification of NDE personnel at all levels.
This procedure, for personnel qualification, is consistent with ASME Section XI and SNT-TC-1A (1980 Edition) requirements.
C.
ualit Assurance Pro ram The "Operations guality Assurance Criteria Manual," Criterion 9, addresses requirements for the control of special processes.
This requirement is implemented by Administrative.Procedure Nos.
6N417. 12.00 Revision 3, entitled "guality Monitoring Activities",
and 6N417.13.00 Revision 2, entitled "guality Auditing".
Section 4. 1.5 of the latter procedure requires a matrix be developed to assure that all required Technical Specification audits are covered.
This is addressed in Audit Scoping Matrix 9, which covers audits of special processes including the ISI program.
The inspector verified that these audits or monitoring activities are conducted by qualified gA personnel.
The gA program also contains provisions to oversee contractor/subcontractor ISI activities.
No violations or deviations were identified.
3.
Inservice Ins ection - Review of Procedures The following NDE procedures were reviewed by the inspector to assure compliance with the ISI program:
73TI-9ZZ05, Revision 1 of 4/22/85 "Dry Magnetic Particle Examination".
b.
73TI-9ZZ07, Revision 1 of 4/10/85 "Liquid Penetrant Examination".
This procedure was qualified to ASME Section V, Article 6, for a temperature range between 40'F and 1254F.
This includes qualification, using a liquid penetrant comparator, for the nonstandard temperature of 40~F.
This is in compliance with the ASME Code which specifies that "when it is not practical to make a
liquid penetrant examination within the temperature range of 15 to
C (60-125'F),
the examination procedure requires further qualification."
c.
73TI-9ZZ09, Revision 2, of 9/14/87 "Ultrasonic Examination of Pipe Welds".
d.
73TI-9RCOl, Revision 1 of 5/8/87 "Steam Generator Eddy Current Examinations"..
All procedures specified qualification and certification of NDE personnel in accordance with 73AC-OZZ21, or another approved program.
Personnel interpreting Eddy Current data are required to be qualified by additional training specifically for the evaluation of data from nonferromagnetic tubing.
The methods of recording, evaluating, and dispositioning findings and reporting requirements were addressed in the procedures in accordance with the applicable Code requirements.
The technical content, such as, method of examination, extent, and technique, were adequately described in conformance with the requirements and guidance of ASME Code Section V.
No violations or deviations were identified.
Inservice Ins ection - Observation of Work and Work Activities The inspector observed the ultrasonic (UT) examination performed on LPSI Pump "A" reducer-to-flange Weld No. 134; a 6-inch diameter butt weld located inside containment.
The UT examination was found to be consistent with procedure 73TI-9ZZ09 and the following ASME Section XI requirements:
the type of apparatus used, scanning technique, extent of coverage, calibration of the instrument (Panametrics Model 2002)
and system prior to examination, beam angles, size and frequency of the search unit (transducer),
limits of evaluation and recording of indications, and determination of acceptance limits.
This UT examination was performed by NDE personnel employed by Sonics Systems International.
The inspector also observed volumetric examination being conducted on Steam Generator No.
2 in Unit 1, using Eddy Current (ET) technique.
This activity was performed by Conam Inspection.
ET procedure 73TI-9RCOl was utilized by the inspector as a checklist to assure these examinations were in compliance with the ISI program.
The equipment used was as specified in the procedure.
For example, the eddy current instrument used was a Zetec MIZ-18 digital multifrequency instrument; the controller and operating display was a
HP 9836 computer with GPIO interface with Zetec MIZ-18 software; the digital recorder used was a Zete'c HCD-75Z data recorder.
Other activities verified by the inspector were; equipment set-up, the 8 channel frequencies used for examination, calibration checks, documentation of equipment calibration, and that the examination
r'
procedure was being properly implemented.
With regard to the ET examination, the inspector observed activities related to probe calibration, probe speed during tube scan, positive tube identification made prior to examination, and how data was recorded for evaluation.
All these activities were being satisfactorily performed in accordance with the approved ET procedure.
The qualification and certification records of the NDE personnel performing the UT and ET examinations were reviewed by the inspector.
All personnel were qualified in accordance with ASME Section XI requirements.
This review also verified that personnel interpreting ET data were qualified by receiving 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br /> of additional training specifically for the evaluation of data from nonferromagnetic tubing.
No violations or deviations were identified.
5.
Inservice Ins ection - Data Review and Evaluation The inspector examined the following NDE data sheets which were reviewed by the licensee's Level III and the ANII:
a.
11, 16, 19, 25 and 30 located in Zone 47 of the Main Steam line.
These are 28" diameter x 1.75" thick carbon steel piping.
11 was also reviewed.
b.
8A, 8B, 9 and 51 located in Zone 51 of the Atmospheric Dump No.
1 system.
These are 12" diameter x 0.844" thick carbon steel piping.
51 was also reviewed.
c.
5, 6, 7 and 8 located in Zone 66 of the Blowdown system.
These are 6" diameter x 0.562" thick carbon steel piping.
d.
12, 13 and 22 located Zone 53 of the Auxiliary Feedwater system.
These are 6" diameter x 0.432" thick carbon steel piping.
The only problems identified to the inspector during the inspection occurred in Zone 47.
MT examination (Magnaflux) revealed 20 linear indications between longitudinal Weld No s.
24 and 25.
Seventeen of the indications were classified as Code acceptable, which is 0. 6 inches.
The remaining 3 indications were 5/8, 3/4 and l-l/8 inches, respectively.
Although the rejectable indications were along 9-3/8 inches of the 75 inch length of pipe, the licensee ground out the full length of indications per Work Order No.
254089.
Since minimum wall thickness was not violated, the grinding and blending of the rejectable indications was all that was necessary to repair the pipe.
Magnetic Particle Examination Report No. 87-1396 revealed that no indications were detected on the repaired weld seam.
No violations or deviations were identifie ~ ~ 4 ~
The inspector met with licensee management representatives denoted in paragraph 1 on October 23, 1987.
The scope of the inspection and the inspector's findings as noted in this report were discussed.
At this meeting, the inspector informed the licensee that additional time was required to complete the review of NDE procedures, and this effort would be performed in Region V and the findings documented in this report.