IR 05000528/1979009
| ML17296A666 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 01/28/1980 |
| From: | Dodds R, Eckhardt J, Narbut P NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| Shared Package | |
| ML17296A662 | List: |
| References | |
| 50-528-79-09, 50-528-79-9, 50-529-79-09, 50-529-79-9, 50-530-79-05, 50-530-79-5, NUDOCS 8004020180 | |
| Download: ML17296A666 (14) | |
Text
U ~
S ~
NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT 50-528/79-09
REGION V
Report No. mzTtlm Imam Docket No.
50-528 50-52 50-530 License No.
CPPR-141 142 143 Safeguards Group Licensee:
P. 0.
Box 21666 Phoenix, Arizona 85036 Facility Name:
Palo Verde Units
2 and
Inspection at:
Inspection conduct d:
Inspectors:
November 26-30, 1979 r 28 80 J.~.
Eckhardt, eactor Inspector
~9~ i P.
P,. Narbut, Reactor Inspector Date Signed Date Signed Date Signed Approved By:
Summary:
R. T. Dodds, Chief, Engineering Support Section, Reactor Construction and Engineering Support Branch Date Signed Ins ection on November 26-30, 1979 Re ort Nos. 50-528/79-09, 50-529/79-09 and 50-530/79-05 Areas Ins ected:
Routine unannounced inspection by regional based inspectors o
construction activities involving reactor coolant pressure boundary piping installation and welding, licensee action on previous items, general plant tour, containment penetrations, structural steel, and electrical cable installation.
The inspection involved 66 inspector-hours onsite by two NRC inspectors.
Results:
Of the areas inspected, one item of noncompliance was identi7ied concerning the absence of required temporary cleanliness pipe caps on safety related piping RV Form 219 s 004080 IE
l
DETAILS 1.
Persons Contacted a.
Arizona Public Service Com an APS)
J.
A. Roedel, Manager, Quality Assurance
L.
W. Price, Site Construction Manager
G. Pankonin, Quality Assurance Engineer L. Ruiz, Quality Assurance Engineer N.
E. Wibel, Quality Assurance Engineer R.
D. Forrester, Quality Assurance Engineer S. Kesler, Unit 1 Supervising Engineer (Cable)
b.
Bechtel Power Cor oration Bechtel
D.
M. Hawkinson, Project Quality Assurance Supervisor
A.
K. Priest, Project Field Engineer J.
Donaldson, PWHT Coordinator
R. Grant, Project QC Engineer V.
E. Matson, Lead Welding QC Engineer E.
Stamm, Lead Welding Engineer D. montgomery, Lead FE Piping R. Taylor, Unit 1 Area FE (Piping)
0. Drinkard, Piping Engineer J. Story, Field Engineer J.
Smith, Superintendent, Cable Pulling
- Denotes these attending exit interview.
2.
General Plant Tour The following items were identified during general plant tours of
. Units 1, 2 and 3:
a.
Cadweld A cadweld connecting number 18 vertical reinforcing bars in the Unit 3 Auxiliary Building did not have a centering mark on the upper bar.
All other cadweld spliced rebar examined had the required centering marks.
The licensee had the subject cadweld radiographed to determine the location of the end of the unmarked reinforcing bar, and the radiograph indicated the rebar was in fact centered.
The inspector had no further questions regarding this ite I
During an inspection conducted on the swing shift of November 26, 1979, it was found that temporary cleanliness caps on the following pipes were not in place, and no work associated with the piping was in progress at the time of the observation:
Unit 2 i e-N -0 8-S-037 2-NC-018-S-086 2-NC-018-S-039 2-NC-036-S-022 2-NC-036-S-021 2-CH-149-S-016 2-CH-149-S-013 2-EH-036-S-008 2-EM-102-S-002 Bechtel procedure
>lPP/gCI-202.0 Appendix I, "Piping Systems Installation," Item C.2. 1 (c) requir es
"any pipe system closures that are suspended at the end of a work day shall be capped and sealed".
This is considered an apparent item of noncompliance.
3.
Licensee Action on Previous Ins ection Findin s a.
(Closed)
0 en Item:
Heat treatment subcontractor su ervisor is res onsib e
or er ormance o
work and ua it contro 5 -5
9-
As a result of an NRC inspection on October 22-26, 1979 APS has revised HPP/gCI 103 "Postweld Head Treatment Control" to incorporate quality control verifications to be performed by Bechtel quality control personnel.
This item is closed.
b.
0 en 0 en Item:
Lack of a re uirement to evaluate reviousl com ete eat treatments s t e current e ui ment ca s rat>on
>s found to be unsatisfactor 50-528 79-07
The licensee has committed to include a requirement for evaluating heat treatments performed since the last valid equipment calibration when a current calibration is found to be out of specification.
The licensee indicated the requirement would be issued as a contract change to the heat treatment contract.
This item remains open pending issuance and review of the contract chang f l
'1
Closed 0 en Item:
Pi in tack welds are made without direct ualit control.
ualit control verifications are made after tack weldin rior to root weldin 50-528/79-07/03 The inspector closed the item based on the fact that the quality controlling parameters of purge gas, cleanliness of weld preparation, and root gap can be effectively checked by a post tack welding visual inspection.
The control of proper weld rod is sufficiently controlled at the rod issue rooms and by quality control surveillance.
The joint preheat requirement is controlled on a surveillance basis.
This item is closed.
0 en 0 en Item:
Insufficient cleanliness control durin t e time etween i in itu c ean iness ins ection an the closin o
the root ass 50-528 79-07 04 The inspector established that welders do not receive training in piping system cleanliness requirements.
The licensee had not completed the investigation and evaluation committed to during the exit interview of October 26, 1979.
This item remains open.
Closed 0 en Item:
Entr of the wron Code on a heat treatment trave er form 50-528 9-07 05 The licensee corrected the error on the traveler in question.
All other safety related travelers were checked and corrected as required.
The personnel involved were appropriately reinstructed.
This item is closed.
Closed 0 en Item:
Li uid enetrant examination of the heat treatment t ermocou e attachment s ot we s was not re uired b
rocedure 50-528/79-07/06 The licensee issued PCN No.
2 to gCI 103 to require attaching the nondestructive examination record to the weld record WP-5.
In addition, Revision 1 to gCI 103 r equires quality control verification of the accomplishment of the nondestructive examination.
This item is closed.
Closed)
0 en Item:
Grindin wheels used on stainless steel were not mar e
wit re aint as re uire 0-9-0
The inspector verified by inspection in the field that grinding wheels for use on stainless steel were marked with red paint as required by gCI 101.1.
The licensee stated that the apparent procedure conflict wherein the General Welding Specification GWS-SN requirements for grinding wheels are different from those in WPP/gCI 101.1 "Specification for Field Fabrication and Installation of Nuclear Piping Systems" is resolved.
The resolution stated by the licensee was that the requirements of gCI 101.1 take precedence over the requirements of GWS-SN.
This item is close f
,
I
'f
h.
0 en)
0 en Item:
The maximum allowable rindin de ression in field de osited stainless steel claddin o
reactor coolant i in is not s eci ied or ua it contro ins ection 0-528/79-07/08 The licensee committed to add a requirement to the Construction Inspection Plans (CIP's) for reactor coolant system piping.
This item remains open pending the revision of the CIP's to specify a maximum grinding depression in the field deposited cladding.
Closed Unresolved item:
Ade uate control of the amount of cold s rin in an ins ection b
C Ins ectors Fie En ineers 50-528/79-06
During the inspection, no cold springing was observed during fitup.
The inspection interviewed two gC inspectors, two welder/ pipe fitters, and an area field engineer.
In each case the personnel understood the restraints on pipe springing.
The inspector had no further questions.
This item is closed.
I'.
Unit 1 Reactor Coolant Pressure Boundar Weldin a.
Review of guality Records The inspector examined weld joint quality records for Reactor Coolant System, carbon steel, 30 inch diameter, 3 inch nominal thickness, line RC-033 Weld W001 and line RC-034 Weld W002.
The records reviewed were the weld joint traveler (WR-5), the NDE records, the heat treatment strip charts, heat treat traveler, and the records of heat treatment equipment calibration.
No items of noncompliance or deviations were noted.
5.
Unit 1 Reactor Coolant S stem Pressure Boundar Pi in a ~
Observation of Work and Work Activities The inspector examined three piping runs for conformance to drawings and specifications.
The three runs were:
a.
16" Safety Injection System, Shutdown Cooling Line from the Reactor Coolant System Loop II nozzle through piping assemblies S001, S002, S005, S003, S004 and S00 I J
I l
t
b.
12" Safety Injection System LP Line from containment penetration through piping assemblies S003, and S004.
c.
3" Safety Injection System HP line from containment penetration through piping assemblies S006 and S007.
No items of noncompliance or deviations were identified.
The inspector observed two situations were the piping was run unusually close to substantial structures.
In one case, the 12" LPSI piping assembly (S004) ran within 3 inches of a structural column.
In the other case the 16" SI shutdown cooling line gate valve (UV 652) body ran within one inch of unused studs protruding from a wall end.
It was determined through discussion with the licensee that piping runs are checked for locational conformance to piping drawings and structure is independently checked for locational conformance to structural drawings but that there is no minimum clearance specified to be checked in the as-erected field condition.
Clearance checks are done by computer at the design stage assuming installation of piping and structure will be done per drawing requirements and within installation tolerances.
The licensee committed to obtain the minimum computer predicted clearances for the two situations observed and to retrieve the predicted seismic and thermal movements for those situations so that a case example assessment of the adequacy of the computer program could be evaluated.
This item will be examined further during a future inspection ( Item 50-528/79-08/01).
The inspector observed rigging and handling practices used in rigging a 10 inch stainless steel safety injection pipe in Unit l.
No items of nomcompliance or deviations were identified.
b.
Review of ualit Pecords The inspector examined gC inspector qualification records for two piping inspectors and two welding inspectors.
No items of noncompliance or deviations were noted.
6.
Containment Penetrations The following installed containment piping penetration assemblies were, examined to ascertain compliance with Specification 13-MN-500; Unit 1 - Penetration numbers ll, 46,
Unit 2 - Penetration numbers 20, 46,
Also, Unit 2 penetrations ll and 12 were examined in outside storage to ascertain compliance with storage requirements for level
equipment.
In addition, seven Unit 1 electrical penetrations in storage were examined.
No deviations or items of noncompliance were identified.
7.
Structural Steel The following miscellaneous structural steel work activities were examined:
a.
Previously field welded shear studs at the 118 foot elevation of Unit 2 Control Building were exaimined to ascertain compliance with WPP/gCI-101.2
"Stud Welding".
Particular attributes checked included evidence of bend testing, full fillet weld, weld cracking and evidence of inspection.
b.
Completed structual beam welding and bolting for the Unit
Rad Waste Building (150 foot elevation)
and Unit 2 Control Building (118 foot elevation)
were examined and compared with requirements of Spec 13-CH-320 "Erection of Structural and tliscellaneous Steel".
Numerous fillet welds were measured and evidence of "turn of the nut" method for high strength bolt installation was observed.
No deviations or items of noncompliance were identified.
8.
Electrical Cable Installation Installation of three Unit 1 Class lE 4160 volt power cables was observed and compared with requirements of WPP/gCI-254.0, Rev.
11,
"Cable Installation".
The cables were power supplies for the Unit 1 containment spray pump P03, HPSI pump P02, and LPSI pump P01 and were pulled from the supply breakers located at elevation 105 in the control building to the pump motors located at elevation
in the auxiliary building.
Specific attributes examined included cable jacket condition, calibration of tensiometer, condition of cable trays, cable identification stubs, cable end sealing, and gC inspection.
Also, the cable installation cards for these cable pulls were reviewed.
No deviations or items of noncompliance were identified.
I 9.
Exit Interview The inspectors met with licensee representatives (denoted in Paragraph 1)
at the conclusion of the inspection on November 30, 1979 and summarized the scope and findings of the inspection as stated in this repor v,'P