IR 05000456/1978011

IE Inspec Repts 50-456/78-11 & 50-457/78-11 on 780927-29 During Which No Items of Noncompliance Were Noted.Major Areas Inspected:Cables & Documentation,Unit 1 Containment Dome Concrete Placement & Previous Insp Items

ML20148U571
Person / Time
Site:	Braidwood
Issue date:	11/01/1978
From:	Barrett P, Hayes D, Clint Jones NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20148U565	List: IR 05000456/1978011 ML20148U561
References
50-456-78-11, 50-457-78-11, NUDOCS 7812070108
Download: ML20148U571 (7)

Text

. .-

.

.

.

'U.S. NUCLEAR REGULATORY COMMISSION 4 OFFICE OF INSPECTION AND ENFORCEMENT

REGION III

.

Report No. 50-456/78-11; 50-457/78-11 Docket No. 50-456; 50-457 License No. CPPR-132; CPPR-133 Licensee: Commonwealth Edison Company Post Office Box 767 Chicago, IL 60690 Facility Name: Braidwood Nuclear Power Staticn, Units 1 and 2 Inspection At: Braidwood Site, Braidwood, IL Inspection Conducted: September 27-29, 1978 Inspectors:

cC C. E." Jones ,//- / '7 d f,h'X:v):t,d -

j,,-P.A.Bar#

'p rett //,f72 Tdu / d '

[ $ ayes, Approved By: . Chief #

Projects Section '

//- /- 7[

'

Inspection Summary Inspection on September 27-29, 1978 (Report No. 50-456/78-11; 50-457/78-11)

Areas Inspected: Observation of work and review of quality records for electrical cables and terminations; observation of work and review of quality records for instrumentation cables and terminations; observation of the final concrete placement for the dome on the Unit 1 containmen Also reviewed the status of previously unresolved items of noncompliance and unresolved items. This inspection involved a total of 40 inspector-hours onsite by two NRC inspector Results: No items of noncompliance or deviations were identifie t 7812070103 z

_ _

. . .

..

> >

.-

DETAILS Persons Contacted

' Principal Licensee Personnel Commonwealth Edison Company

• R. Cosaro, Project Superintendent

• J. Callahan, QA Engineer

• T. Cobbs, QA Engineer

• W. Nelson, QA Engineer

• L. Tanner, QA Engineer

• M. Ruof, QA Engineer

• N. T. Somis, QA Engineer

• S. Gaconis, QA Engineer

• R. J. Farr, QA Engineer

• J. W. Schlunz, Lead Structural Engineer i

Other Personnel

• A. J. 6trong, Project Manager, E. C. Ernst

• R. W. Morrell, Project Engineer, E. C. Ernst

• A. H. Kunlin, QA Manager, E. C. Ernst

• Denotes those present at the exit intervie ,

Licensee Action on Previous Inspection Findings (Closed) Unresolved Item (456/78-04-01) - Material cectification on five i identified beams was not available on site. The inspector reviewed the I certification for these beams identified as A429B1, A429B2, A429B3, A439B4 and A429B5 and observed the use of the Bill of Material identi-fication through the' traceability code to the documentation and verification of the heat numbers by S&L. S&L is programing the documentation for the structural steel for storage by computer progra Documentation for the five beams above was available on sit (Closed) Noncompliance (456/77-08-01; 457/77-08-01) - The inspector observed the. pipe storage area noted in the citation and found it to be dry. The licensee had graded the area to improve the drainage and had replaced the dunnage under the pipe to prevent the pipe becoming submerge (Closed) Noncompliance (457/77-07-01) - Three polar crane bracket assemblies were observed to have incompletely fused root welds although the fabrication drawings specified full penetration velds. Response-2-l l

. - ---

- . - . - -_ _ _ . _ -

.

by the licensee was considered acceptabl The repaired polar crane bracket assemblies were inspected by an NRC inspector and were considered acceptable. The results are documented in IE Report Nos. 50-456/77-08 and 50-457/77-0 (Closed) Unresolved Item (Reference IE Report No. 50-456/77-05) - The inspector discussed the repair of these weldments and the NDE with licensee QA/QC representatives. He was informed that all weldments received full magnetic particle examinations and were reviewed and accepted by the authorized inspector. The NRC inspector observed the test results, heat treatment and repair procedures on each site visit during the repair period. These weldments are now in place and embedded in concret (Open) Unresolved Item (456/78-03-02; 457/78-03-02) - The Commonwealth Edison Electrical Construction Test Procedure Manual has been revised to define the qualification training requirements for test personnel and modified to include. procedure No. 24, Rev. O to assure that the insulation resistance of power cables is tested during constructio The inspector could not determine if the effective period of qualifi-cation would be specified for the test personne Also, procedure No. 24, Rev. O, paragraph 1.2 specifically excludes control cables frue insulation resistance testing. The inspector could not determine how compliance with Regulatory Guide 1.30/IEEE 336-1971, Section 5. would be achieved for control cables. Further review of this matter is planne l

-

-- - . .

.

-

.

!

'Section I

' Prepared by C. E. Jones Approved by D. W. Hayes, Chief

,

Projecte Section 1.. Observation of Concrete Placement (Unit 1)

i The inspector observed a portion of the concrete pour completing

,

the dome on the Unit 1 containment. The concrete was placed by ,

pumping and with a slump approaching the minimum specified to control the consistency and workability of the concrete on the slope of the dome. The shape of the dome was obtained by contouring the fresh concrete to previously placed grade stake l Adequate QC personnel were available to cover work at the batch plant, unloading site and placement site. The concrete placement observed was in conformance with job specification and applicable code requirement I No items of noncompliance were identifie . Housekeeping Housekeeping was observed to vary from area to area as the l inspectors toured the construction sit Housekeeping in the l i

areas below grade level were, in general, better than those above grad l

l l-4- )

. . - .- ,... . . - - _ ._ .. - . . . . = - ... . -

r

!

, .

Section II Frepared by P. A. Barrett

]

Reviewed by R. L. Spessard, Chief Engineering Support-Section 1 1 Observation of Electrical Work Activities The RIII inspector observed the following installed cable

. raceway hangers and braces:

(1) As located per Sargent & Lundy drawing No. 20E-0-3009 Rev. F Hangers 17H2,17H2,- 17H3,17H2,17H1, SH1, 2H1, and SH2; and brace 1HV (2) As located per Sargent 6 Lundy drawing No. 20E-0-3010 Rev. E Hangers 2H1, 2H2, 2H1, and 2H1; and brace 2HV Where applicable the above supports were installed in accordance with S&L drawings No. 20E-0-3009H01 Rev. H, No. 20E-0-3010H01, No. ' 20E-0-3263 Rev. J (Details DV1 and ,

DV4), No. 20E-0-3264 Rev. L (Details DV7, DV8, and DV8A),

No. 20E-0-3265 Rev. M (Details DV14, DV22, and DV25), and No. 20E-0-3260; S&L Standards No. STD-EB-116.2 dated June 10, 1974 No. STD-EB-116.5 dated June 10, 1974, N STD-EB-116.17 dated June 10, 1974, and No. STD-EB-115.0; E. C. Ernst, Inc. procedures No. 4.3.11.1 Rev. 1, N .14.13 Rev. 1, . No. 9. 2 Rev. 2, and No. 10.17 Rev. 0; and Design Change Request No.' 21 The components, joint connections, and number of assemblies were installed as specified.- Of approximately 75 welded connections inspected, there was no visibility of lack of fusion, cracking, porosity, overlap, or excessive undercu The required torquing. verifications for the bolted connections-were not completed, but were controlle * The RIII inspector observed the in-process welding activities related to a cable raceway aupport assembl The weld was-5-

'

. - - ,

mt n,-4 ,a a,+_1 + M ,a -g ,~a, p.a.

o

.

o a partial penetration flare bevel groove type which joined plate 89C2.to a.section of tube steel. 1Rie connection was

- identified on S&L drawings No. 20E-1-3051H Rev. D (support at hanger H084), No. 20E-0-3281 Rev. E, detail DV89, and tabulation sheet No. 6/20E-1-3051HL Rev. E, page 9 of 19.-

(1) The weld. joint 'was properly cleaned prior to weldin (2) Immediately upon completion of the weld placement, the inspector visually examined one of the two welds making the connection. The weld exhibited no lack of fusion, cracking, porosity, overlap, or excessive undercu The weld was made in accordance with E. C. Ernst Procedure No. 9.2, Rev. (3) The welding electrodes were being controlled and dis-tributed in accordance with E. C. Ernst Procedure N ,

9.1, Rev. The activities delineated in paragraphs a and b above were being performed in accordance to AWS D1.1-75. No items of noncompliance were identifie . Record Review of Electrical Work Activities l The RIII inspector reviewed the E. C. Ernst Manual Shielded ,

Metal Arc-Welding Inspection Check List, Form 91, and Pittsburgh '

Testing Laboratory Inspection Reports 7-VW and 7-VW-R1, relative to the welds on the aforementioned installed hangers and brace The records identified the inspector, the type of observation, the results, and the acceptability. There were no noted ;

deficiencies. The records were identifiable and readily l retrievabl I i The RIII inspector reviewed the following records relative to

'

the aforementioned in-process weld activitie (1) The temperature Calibration Control Card, E. C. Ernst I Form 77, indicated compliance with Procedure No. 9.1, j-Rev. 3, for weld rod oven No. 401 (2) The Welder and Welding Operator Qualification Test Record, l E. C. Ernst Form 77, indicated current qualification for j welder No. 1199 (27). The record indicated appropriate <

review and approval of test results by Pittsburgh Testing

. Laborator i l

l

-6- l

l l

_,.

. -.~ ... .

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

e a

.

,

e (3) The calibration record for thermometer No. ECE 3546, used to monitor weld rod oven temperatures, indicated current calibration, traceable to the National Bureau of Standard No items of noncompliance were identifie Exit Interview The inspectors met with the licensee representatives (denoted under Persons Contacted) on September 29, 1978 at the conclusion of the inspection and summarized the. scope and findings of the inspectio ,

s

,

.

-7-

'

- - . .. . . - -