IR 05000445/1997022

Insp Repts 50-445/97-22 & 50-446/97-22 on 971103-07.No Violations Noted.Major Areas Inspected:Maint

ML20199E072
Person / Time
Site:	Comanche Peak
Issue date:	11/17/1997
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML20199E059	List: IR 05000445/1997022 ML20199E054
References
50-445-97-22, 50-446-97-22, NUDOCS 9711210095
Download: ML20199E072 (7)

Text

p

" .

U A;

,,

ENCLOSUllE

. U.S.- NUCLEAR REGULATORY COMMISSION -

REGION IV

Docket Nos.: 50 445; 50-446 License Nos.: NPF-87; NPF 89

' Report No.:

-

-50-445/97 22; 50-446/97-22 Licensee: TU Electric Facility:- Comanche Peak Steam Electric Station, Units 1 and 2 Location: FM 56 Glen Rose, Texas

-- Dates: ' November 3 7, 1997 Inspector: Paul C, Gage, Senior Reactor Inspector, Maintenance Branch ~

Apptr veo By: Dr. Dale A. Powers, Chief Maintenance Branch Division of Reactor Safety -

+ - ATTACHMENT: Supplemental Information i

-)

l

,

__

"

9711210095 971117 POR ADOCK 05000445 0- PDR

-. _ _ . . _ - - _ - .- _ - . _ _ . _ .__ ._

,

.., ;

W

[,

" j

. . 2. .

,

- EXECUTIVE SUMMARY ,

Comanche Peak Steam Electric Station, Units 1 and 2 NRC Inspection Report 50-445/97-22; 50-446/97 22 Maintenance-

• - Nondestructive examinations were performed in a thorough manner. Examiners .

.were knowledgeable of their assigned tasM; (Section M1.1). -

• The inservice inspection procedures contained adequate' detail and instructions to perform the applicable nondestructive examinations, and were consistent with the requirements of the American Society of Mechanical Engineers Code (Section M3.1).

• Nondestructive examinations were performed by certified individuals in accordance with approved procedures (Section M5.1).

• Inservice inspection activities were performed in a well organized and controlled manner, with appropriate supporting documentation (Sections M1.1; M3.1; and MS.1).

.

} ;

.._

o

.

3-Report hetails Summary of Plant Status During this inspection period, Unit 1 was at 100 percent power, and Unit 2 was in Mede 5 initially, and entered Mode 6 at 2:23 a.m. on November 4,1997, for Refueling Outage 2RF0 M.aintenance M1 Conduct of Maintenance M1.1 Nondestruclive Examination Obs.elyations Insoection Scope (732h.31 The inspector observed the performance of an ultrasonic examination and a liquid penetrant examination on: (1) a Class 1 weld on a 6-inch stainless steel pipe and (2) a Class 1 weld on an 8 inch stainless steel pipe. These welds were located in the piping associated with the safety injection system connection to the Lc op 2 cold leg of the reactor coolant system. The inspector also reviewed the certified matenal test reports of the penetrant, cleaner, and developer material Observations and Findinas The inspector verified that approved Procedure TX ISI 11, " Liquid Penetrant Examination," Revision 6, was followed while performing required nondestructive examinations involving the safety injection system. The inspector noted that the vendor-supplied procedures had been reviewed and approved by appropriate plant personnel. The inspector noted that nondestructive examination examiners verified that the surf ace temperature of the welds were within the procedural requirements, and that all observed work was performed with the work package presen Before the ultrasonic examinations were performed, the inspector observed the system calibration, which included both axial and circumferential scans. The inspector noted that transducer selection, sensitivity calibration, and construction of the distance amplitude correction curve were performed in accordance with the associated procedure. The intpector verified that the calibration blocks used were similar to the components to be examined in terms of material, diameter, and wall thickness. The nondestructive examination examiners documented their calibration and examination results as specified by the procedure. The inspector noted that the ultrasonic examination of the circumferential weld on the 8-inch pipe was performed with a shear wave mode using a 45 degree angle beam and a transducer with a frequency of 2.25 MHZ. The inspector observed that the ultrasonic examination of the weld on the 6 inch pipe was performed with a 70 degree longitudinal refracted J

, . _ . _. . ..

w:

k

,!

,

?- $ (

^4 wave with'a frequency of 4 M' HZ, Th'e inspector verified that_ designated Procedure TX ISI 214,," Ultrasonic Examination Procedure for Welds in Piping Systems'ennd Vessels," Revision 2, had been approved and was being followed. The inspector also observed the examiner perform a calibration check at the beginning of the examinatio Discussions with the examiners performing the ultrasonic and linuid penetrant examinations indicated that they were experienced and knowledgeable nondestructive examination personnel, They were cognizant of the procedural and documentation requirements, and understood the examination techniques.

4 Conclusions The observed examinations were performed in a thorough manner, Examiners were knowledgeable of their assigned task M3 Maintenance Procedures and Documentation M3.1 Inservice insoection Proaram Plan and Procedures a, insoection Scone (73753)

The inspector reviewed the licensee's inservice inspection plan and schedule for the current inspection interval to determine if whanges to the inspection plan concerning component selection, etc., had been properly documented and approved. The inspector also reviewed the licersee's inservice inspaction procedures. The.

,

inspector reviewed Revision 2 of the licensee's inservice inspection program plan (dated August 25,1997) for the first 10-year inspection interval for Comanche Peak Steam Electnc Station, Unit 2. The inspector reviewed the nondestructive-examination procedures used during the observed examinations to verify that they were consistent with the requirements of Section XI of the ASME Code,1986

.

. Edition, without Addend Observations and Findinos

- The inspector noted that tne NRC had reviewed and evaluated the licensee's

'

submitted inspection plan and schedule to determine compliance with 10 CFR 50.55atg).- The inspector noted that the ASME Boiler and Pressure Vessel Code..Section XI,1986 Edition without addenda, was used as the basis for the inservice inspection program for Unit 1 and Unit The inservice inspection program' plan described the ASME Code Class 1, 2, and 3 components subje'ct to surf ace, volumetric, and visual examinations, and inclu'ded NRC approved relief requests for each item where the licensee determined that a code-required examination was not practical. Tables in the program plan identified

l QA-W N .- the name of the component or system, code class, item number, and genera identification. Also included were the required nondestructive examination methods and applicable remarks or references for relief requests that had been approve The inspector found that the inservice inspection procedures contained adequate =

detail and instructions to perform the intended examinations, Conclusions The inservice inspect ion procedures provided adequate detail and instructions to -

perform applicable nondestructive examinations and were consistent with the requirements of the ASME cod MG' Maintenance Staff Training and Qualification M5.1 Personnel Qualification and CertificatiQD a.- Insoection Scone (73753)

The inspector reviewed the qualifications and certifications of the inspection personnelinvolved with the inservice inspection program. The inspector reviewed Procedure NDE 1.01, " Nondestructive Examination Personnel Training, Qualification, l and Certification," Revision 3, to verify that the certification process met the !

requirements of American Society for Nondestructive Testing's " Recommended Practice SNT-TC-1 A," 1980 Edition. The inspector reviewed the applicable '

qualification files of all nondestructive examination Level 11 examiners and all the Level lli examiner ,

, DbSCHAtions and Findinos The licensee representative informed the inspector that the performance of inservice inspection examinations were contracted out, but were performed by nondestructive examination examiners whose certifications were reviewed and

,

approved by the licensee. The inspector observed that the inservice inspection supervisor and site-Levellit examiner exhibited a high degree of competency and were fully cognizant of ASME code requi ements and inservice inspection program commitments. The inspector noted that the personnel qualification and certification files reviewed contained the appropriate examinations and certifications for the

- designated nondestructive examination methods. The records indicated that

_ personnel had been certified in accordance with the 1980 Edition of SNT TC 1 A. As required by the ASME code, all of the individuals had maintained current )

documentation regarding near distance acuity and color vision examination ,

~y- - , -< - - s - - ,.-

.

-6-c. Conclusions The nondestructive examinations were performed by certified individuals in accordance with approved procedure X1 Exit Meeting Summary The inspector presented the inspection results to members of licensee management at the conclusion of the inspection on November 7,1997. The licensee personnel acknowledged the findings presente The inspector asked the licensee personnel whether any materials examined during the inspection should be considered proprietary. No proprietary information was identified.

l

.. ]

._ .

-

,

_ _ _ _

g-ib 4..

p;..

ATTACHMENT SUPPLEMENTAL INFORMATION- -

_

PARTIAL LIST OF PERSONS CONTACTED -

Licensee -

C. Corbin, Regulatory Af f airs J. DeBonis, Engineering Programs -

J. Hair, Hartford Steam Boiler, Resident ANil

-

T.' Hope, Regulatory Compliance Manager

-

-

J.- Kelley, Vice President Nuclear Engineering and Support

- R. Mays, Engineering Programs Supervisor R. Niemann, Hartford Steam Boiler, Resident ANil D. Reimer, Technical Support Manager -

' R. Walker, Regulatory Affairs Manager NRC H. Freeman, Resident inspector INSPECTION PROCEDURES _USED IP 73753 Inservice inspection PROCEDURES REVIEWED NUMBER REVISION TITLE STA 153 4 Management of Contracts

'

STA 703 8 inservice inspection Program TX-OPS 101 5 Preservice and inservice' Examination Documentation

- TX-ISI 8 - .5_ VT-1 and VT 3 Visual Examination TX-ISI 11 6 Liquid Penetrant Examination ETX-ISI 70 l6 . Magnetic Particle Examination i TX-ISI-214 - 2 Ultrasonic Examination Procedure for Welds in Piping i

Systems and Vessels NDE 1.01

-

'3 Nondestructive Examination Personnel Training,

- Qualification. and Certification

"^

,, .-g+a- ,-.+yy-.- *1y-y y., , , y