IR 05000454/1979002
| ML19296A387 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 02/01/1979 |
| From: | Danielson D, Lee E K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19296A382 | List: |
| References | |
| 50-454-79-02, 50-454-79-2, 50-455-79-02, 50-455-79-2, NUDOCS 7903190493 | |
| Download: ML19296A387 (5) | |
Text
.
.
.
U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCD4ENT
REGION III
Report No. 50-454/79-02; 50-455/79-02 Docket No. 50-454; 50-455 License t!o. CPPR-130; CPPR-131 Licensee:
Commonwealth Edison Company P. O.
Box 767 Chicago, IL 60690 Facility Name.
Byron Nuclear Power Station, Units 1 and 2 Inspection At: Byron Site, Byron, Illinois Inspection Conducted: January 23-25, 1979 9 / /{ fb-
- /'/76
~
Inspector:
E.
b,.
K..
Lee c /
-
/
[& vs v %-
tv-W!'!l7 Approved By:
D. H. Danielson, Chief Engineering Support Section 2
_ Inspection Summary Inspection on January 23-25, 1979 ( aports No. 50-454/79-02; 50-455/79-02)
Areas Inspected:
Reactor coolant pressure boundary piping welding; safety-related piping work activity and welding.
The inspection i'nvolved a total of 17 inspector-hours onsite by one NRC inspector.
Results: Of the three areas inspected, no items of noncompliance or deviations were identified in two areas, one item of noncompliance was identified in one area (infraction - failure to follow procedure and to provide acceptance criteria in procedure - paragraph 3b and 4).
-
7903190193
..
.
DETAILS Persons Contacted Principal Licensee Employees
- S. Forsb2, QA Engineer
- i. McIntire, QA Supervisor
- J.
Porter, QA Engineer
- G.
Sorensen, Project Superintendent
- M.
Stanish, QA Engineer
- R. Tuetkin, Lead Mechanical Engineer Hunter Corporation M.
Sonsag, Qualtiy Assurance Supervisor A.
Simon, Quality Assurance Adminstration Supervisor The inspectors also contacted and interviewed other licensee and contractor personnel, including area superintendents and craftsmen.
- Denotes those present at the exit interview.
Licensee Action on Previous Inspection Findings (Open) Unresolved Item (454/78-09-02; 455/78-09-02) - Hunter Corporation QA procedures:
The inspector reviewed Hunter Corporation memoranda instructing personnel in the methods and means of monitoring welding para-meters and determined that they are acceptable.
The procedure relative to the mapping of prepared cavity is being drafted and will be reviewed during a subsequent inspection.
Fpnctional or Procram Areas Inspected I.
Reactor Coolant Pressure Boundary Piping Welding Activities - Unit 1 a.
Joint Preparation and Alignment The inspector observed the fitup of Reactor Coolant System Weld No. 2 on Drawing No. lH-CAE-1.
It was determined that the joint alignment met the applicable code req arcments and QC verified the alignment prior to welding.
b.
Welding Beyond Root Pass The inspector observed welding of fill passes of Safety Injection System Weld No. 135 on Drawing No. SI-8 and Reactor
, Coolant System Weld No. 13 on Drawing No. lH-CAE-2.
It was-2-
.
_
determined that:
(1) applicable welding procedure was used; (2) welders were currently qualified; (3) welding procedure requirements were met; (4) work area was f ree of weld rod-studs; and (5) physical appearances were acceptable.
The inspector determined that adequate qual-GA and QC tctivities.
personnel are at work location to monitor
,
No items of noncompliance or deviations were identified.
2.
Sais e ielated Piping Work Activities - Unit 1 The inspector observed weld end preparation of Essential Service Water System Weld No. 766 on Drawing No. SX-6-16 and _lignment of Residual Heat Removal System Weld No. FW65 on Drawing No.
RH-4-5.
It was determined that work activi+ies were performed in
.
accordance with the applicable procedures and good construction practices were adhered to.
No items of noncompliance or deviations were identified.
3.
Safety Related Piping Welding Activities - Unit I a.
Joint Preparations and Alignment The inspector observed the fitup of the Boron Thermal Regeneration System Weld No. 291 of line No. 1BR07AC-2.
It was determined that the joint alignment met the applicable code requirements and QC verified the alignment prior to welding.
b.
Weldine of Root Pass
'
The inspector observed welding of the root pass of Chemical and Volume Control System Weld No. 879 on Drawing No. CV-10-11.
It
..
was determined that:
(1) proper welding procedure was used; (2) welder was currently qualified; (3) physical appearances were acceptable; and (4) a consumable insert for Weld No. 878 issued to a welder on January 23, 1979, was in the possession of the welder on January 24, 1979, and has not been consumed into the weld.
Item (4) is an item of noncompliance identified in Appendix A.
(454/79-02-01)
~
-3-
.
$
Pass Welding Beyond Root c.
The inspector observed welding of fill passes of SafetySI-6 and Chilled 120 on Drawing No.
Injection System Weld No.
IPC-8.It was determined 17 on Drawing No.
(2) welders Water System Weld No.
(1) applicable welding procedure was used;(3) welding pr that:
were currently qualified; and (5)
(4) work area was free of weld rod-stubs; were met; physical appearances were acceptable.
as noted, no items of noncompliance or deviations were Except identified.
Weld Joints with Backing Rings _
ter, inspector met with the licensee and discussed the mat i hout relative to welders welding the gap of a backing ring w t The the Braidwood being qualified to weld without backing, identified atan identical situation The licensee stated that Nuclear Power Station.
the Byron site and resolution is to Braidwood Station existed at is the The inspector asked, what also applicable to the Byron Site.
The licensee stated that maximum allowable gap in the backing ring?
been established.
criteria have not in Appendix A.
This condition is an item of noncompliance identif1_d (454/79-02-01; 455/79-02-01)
Review of Weldine Procedure 5.
inspector reviewed Hunter Corporation Welding Procedure No.
opening has dimension of 3/16" The WPS-40 and noted that the root licensee relative to the meaning nominal. Upon questioning the l and of " nominal," the inspector was inf ormed that QC personneopening of 1/8 welders have been instructed to use root 1.
The inspector as stated in Welding Procedure No. HCPB-III, Rev.WPS-40 should be revised to
'
stated that welding Procedure No.the allowable and this matter is cons l ed.
'
.
reflect (454/79-02-02; 455/79-02-02)
identified.
No items of noncompliance or deviations were
_ Unresolved Items information is required in Unresolved items are matters about which more items of noncom-order to ascertain whether they are acceptable items, Unresolved items pliance, or deviations.
are discussed in paragraph 5.
,
o e
4 -
.
..
.
.
Exit Interview The inspectors met with licensee representatives (denoted under Persons Contacted) at the conclusion of the inspection on January 25, 1979.
The inspectors summarized the purpose and findings of the inspection.
The licensee acknowledged the findings reported herein.
.
.
d
_5_
-