IR 05000445/1982029
| ML20028D007 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/23/1982 |
| From: | Fitzgerald, Fortuna R, Herr R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20028C997 | List: |
| References | |
| 50-445-82-29, 50-446-82-15, NUDOCS 8301140393 | |
| Download: ML20028D007 (14) | |
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'; NUCLEAR REOULATORY COMMISSION b~ REGION IV ' ,
611 RYAN PLAZA DRIVE, SUITE 1000 9,,,,,* ARLINGTON, TEXAS 76011
0FFICE OF INVESTIGATIONS DATE: November 23, 1982 ' REPORT OF INVESTIGATION TITLE: Comanche Peak Steam Electric Station Alleged Electrical Deficiencies SUPPLEMENTAL: DN 50-445/50-446 CASE NUMBER: 4-82-012 . CONTROL OFFICE:
REGION IV
STATUS: CLOSED PERIOD OF INVESTIGATION: August 4 - September 17, 1982 - C REPORTING INVESTIGATOR: / & Richa~rd'K. HeYr,' Acting Director ' 01 Field Office, Region IV . PARTI'CIPATING PERSONNEL: Lawrence E. Martin, Reactor Inspector Reactor Project, Section B, Region IV D. L. Kelley, . Senior Resident Reactor Inspector Reactor Project, Section A, Region IV _ tst A REVIEWED BY: /% ' R.o)er/A. Fortuna, Acting Deputy Director Office of Investigations APPROVED BY: & es Mo - .. Dam 6sA.Fitzgeral.dYAct.ingDirector.
gfdiceofInvestigations 8301140393 821221 .- PDR ADOCK 05000445 O PDR '
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. l SUMMARY '
l Investigation of all'e'ged'51 Ectr'fcial'Id'efi'cieEcies that occured from ~ ~ l August,1979 to January.,1980 in the construction phase of the comanche Peak ' Nuclear Power Plant at Glen Rose Texas, included an interview of 6 the review of numerous electrical records, and the inspection by NRC personnel of identified alleged electrical " deficiencies."
Investigation disclosed that three of the four basic alleged " deficiencies" were in the areas of non-safety wiring.
During August and September,1982 all alleged .. - - deficiencies were examined and no irregularities were found.
Review of noncon-formance report records did identify similar deficiencies discovered in the --. December 1979 through January / February 1980 time frame; however, these deficien-cies were properly addressed in 1980.
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- Purpose of Investigation ~
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' The purpose of this investigation was to investigate allegations of electrical
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" deficiencies" during the 1979/1980 construction phase of the Comanche Peak . . Steam Electric Station, Glen Rose, Texas.
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. . i < Background . ,
_.. , _ es ~~ '-- ~ " ' in Arlington, Texas; rovided reporting investi ator a copy of a statement executed on' x ined tha worked at the Comanche Peak ,
construction site in the l remarked that eged "e,ectrical faults of ,_, l construction" at the Comanche Peak site located in Glen Rose, Texas.
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. In.terview of. M _ , Brown and Root, contractors for Comanche Peak construction, was interviewed by NRC Investigator R. K. Herr at the construction site located in Glen Rose, Texas. 4EEENB> explained that he was present during the 1979 time frame, and in December 1979, the electrical department created a " termination crew." EEEEEL stated that this crew would check out all electrical (safety and non-safety) wiring to ensure that work had been accomplished and that the work was done satisfactorily. GIIIIhgremarked that the men assigned to the work crews would submit handwritten reports to show what work was done, where the work was done, and the status of the work. EgggEELemphasized that this crew checked the .. -. electrical wiring before the Quality Control Inspectors were advised that the electrical wiring was ready for inspection. EEEEEElexplained that the termin- --- ation crew conducted a preinspection review of all electrical work. EEEEEk also pointed out that, 'if a deficiency was noticed and reported, the deficiency would be addressed before the Quality Control Inspector would conduct his inspection. EEEEEtexplained that this extra " check out" by the electrical personnel was used as a management tool to show the electrician where problems arose and to point out various potential deficiencies. gBENBEkstated that the Quality Control Inspector could still find various deficiencies, and that the practice of utilizing " termination crews" to check the electrical wiring C is no longer being used. (BBEgbe remarked that " termination crews" were not a requirement in the Brown and Root procedure or instructions, but were merely an extra check for the electrical department itself, and therefore, none of the handwritten reports or status sheets were kept.
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The Review of VM-yf=m ], Daily Time Sheet ] On August 31, 1982, a review of NDaily Time Sheet,6
,... -- ~s =- = ;-3 by HRC-Investigator R. K. Herr at
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_,ur_ the Comanche Peak construction-siter Glen Rose,- Texas was accomplished.
This --- - - , review disclosed thatWworked for Brown and Root (contractors) from f, August 21, 1979 to January 11, 1980.
The records further disclosed that from j August 21, 1979 to January 1,.1980, m worked on non-safety related wiring.
- ~; ' > According to the records,.Nworked for the " termination crew" from ~ January 3 to January 11, 1980.
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- - . t . Interview of M , On September 2, 1982, employed at the . Comanche Peak construction-project, GlerLBose, Texas,_was_ interviewed by NRC { Investigator R. K-Herrand4RC-Inspector 1...E. Martin l.afM" * ' M executed a signed sworn statement ~, . . Attachment (2, wherein he iden ified four areas of alleged " deficiencies" and ._ l drew a map depicting the exact location.cd these deficiencies..M further described these deficiencies-as follows: _ (1) Motor control center located in the circulation water system: ~~ use of 1000 MCM cable, using 750 MCM lug that was drilled to accept larger cable.
,_ (2) Auxiliary Building, Reactor No. 1: lug designed for an approximate screw size of 3/8 inch was used on a terminal block designed for #10 screws.
(3) Switch Gear Room, Reactor No.1, black cable: lug designed for inch screws were used on terminal blocks designed for #10 screws.
' (4) Annunciator logic panels, Control Room, Reactor No.1, black cable: improper cable splicing and wiring to the wrong - side of lugs.
M other general allegations of deficiencies identified in his revious statement of June 14, 1982, were addressed in the following manner.
expressed concern with the improper installation and check-out of Cannon type ' plugs. M was provided NRC Inspection Report 50-445/80-13, dated - May 21,1980.,M' stated that after reading the NRC Ins ection Report, the report ans~wered all his concerns in this area.
had also expressed concern regarding the patching / repairing of dama ed cable, faulty grounding, and wiring not protected from abrasions.
was ptovided . eight nonconformance reports covering the above general allegations that were issued from December 20, 1979 to March 18, 1980 and subsequently corrected.
after reviewing the nonconformance reports, stated that the deficiencies @,d in the nonconformance reports and subsequent corrections appeared identifie to address the concerns that he identified in his previous statement of June 14, 1982.
F explained that ' ', he was not in
- a position to determine i is concerns were addressed proper y, pointing out s that he did not have access to the nonconformance reports or NRC inspection reports.
Further, M remarked that most of his work was with non-safety cable.
However, he stated that between January 2 and January 11, 1980 he was assigned to the Electrical Department " termination check-out crew" that went around to ensure that all work was done properly, and that some of the items he checked could have been safety related.
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- . M stated that he was unaware of QA/QC activities or procedures that
took place subsequent to the check-out crew activities on all safey-related L activities. M also expressed concern that when cad-welding was done.
welders only protected an area of about 3 feet; however, M had. no.t 2 _......, _ _. ~.. ' inspected any of these to determine if any cables had _ been damagedand_could ~~~ ~ ' - not identify any specific areas for follow-up by NRC.
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. , Inspection of Alleged Deficiencies . % On August 31, 1982, Dennis ~L.Kelley, NRC Senior Resid nt Reactor Inspector --~ ' (SRI), assigned to Comanche Peak, Glen Rose, Texas ~inet with NRC'Ihv'estigator - - ' R. K. Herr to review the, allegations set forth by
, H Allegation Number 1: Kelley was able to physically locate the motor control
3 center (MCC) located in the circulating water system, as described in tha allegation concerning the use of 1000 MCM cable with a 750 MCM lug.
Kelley j stated that he inspected the area in question and found no 1000 MCM cable in - the motor control center.
Kelley reported t iat he did find one 750 MCM cable
in MCC XB3-2 that is matched up to the proper lugs.
He also found that the .... MCC 1B3-2 contained paired 350 MCM cables properly terminated.
Kelley remarked that as of August 31, 1982, no improper wiring was evident in the MCC's of the circulating water system.
On September 17, 1982, Kelley advised that the areas of the alleged deficiencies _ in his statement of September 2, 1982 that were identified byEliNN@pqLN'sistance of the maps drawn byM (see below), were located witn die as Allegation Number 2, Auxiliary Building, Reactor No.1, ' improper screw size for. lugs : Kelley stated that he physically located this area ut,ilizing Map , No.,1, and found that there were no washer / screws in panel 5 or 6.
Howeser, he did discover a number of screws with attached washers.
Kelley explained that upon close examination he found that the washer attached to the screws is an intricate part of the screw (manufactured together) and it not an add-on as it may appear at first glance.
Kelley stated that some screws contained brass plate and some contained chrome plate.
Kelley remarked that the chrome plate gives the appearance of a steel washer and could easily be. mistaken for steel.
Kelley concluded that as of September 1982, there was no improper wiring in this area.
. Allegation Number 3, Swith Gear Room, Reactor No.1, improper screw size for e lugs: Kelley stated he physically located this area utilizing Map No. 2 and found that the same conditions existed as per Allegation No. 2, above.
Kelley added that as of September 1982, when he inspected Switch Gear Room, Reactor No.1, no improper wiring was observed.
. Allegation Number 4, Control Room, Reactor No.1, splicing and cable termina-tion to wrong side of fuse block with some shaving of the lugs: Kelley stated ' he physically located this area, using Map No. 3, and found no evidence of shaving or erroneous termination of cable.
Kelley further stated that he checked-the section in question as well two other sections in the control panel and found that there was no evidence' of lugs being shaved and added that blocks were of such a nature that it makes no difference which side accepts power leads.
Kelley remarked that there were three blocks located in this area at the time of . his examination. He did not find any improper wiring.
Kelley confirmed @JJ statement that the wiring in this area is black cable wiring, and l is non-safety.
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.\\ - . .. - - ... i . Kelley stated that during his inspection effort he also examined safety and - non-safety cable in the location of M c,oncern, utilizing Map No. 4, to determine if any cables were pulled too tight.
Kelley. explained that the.
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wires down and stated he fouild adei;uate slack in these cables.
Kelley pointed.. . ] cables are tied off with" tie wraps and"En~ hored 'witti~ adhesive clips to hold ' ' - c ~ ~ ~ " out that these conditions are in existence at the present time.
However, he ~ could not coment on the conditions as they existed in January 1980.
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Status of Investigation -.. - - ,. . - e - -- - -
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- - -- 2 - The status of thisdnvestigation-is-CLOSED.- - - -. . - - - -- .- - .. .,..... _' i, , . T e e =Em e .
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( , , ' Attachments ,' Attachment 1 - M signed; statement.n.;.., n u ru 6-14-82. COPY ALL - _, Attachment 2 - 6 signed sworn statement 9-06-82 ORIG OI:RIV/CY ALL'
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