IR 05000358/1978025
| ML19256A370 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 11/29/1978 |
| From: | Hayes D, Maxwell G, Vandel T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19256A368 | List: |
| References | |
| 50-358-78-25, NUDOCS 7901050095 | |
| Download: ML19256A370 (7) | |
Text
{{#Wiki_filter:. . U.S. NUCLEAR REGULATORY COMMISSION . h 0FFICE OF INSPECTION AND ENFORCEMENT
REGION III
Report No. 50-358/78-25 Docket No. 50-358 License No. CPPR-88 Licensee: Cincinnati Gas and Electric Company 139 East 4th Street Cincinnati, OH 45201 Facility Name: kb. H. Zimmer Nuclear Power Plant Inspection At: Zimmer Site, Moscow, OH Inspection Conducted: October 24-26, 1978 )c ' a ,/,/'N,f,-[[ Inspectors: T.
E. Vandel f N9ld JK ! m A' G. F. Nadwell // 2 Y 7f - ?.+bh:)Jw$ -, .? ',f?(,, .., y,.J.
Hughys a Of . w pn- ///29!/,[ Approved By: Hayes, C ief . . ' ' Projects Section Inspection Summary Inspection on Octob_er 24-26, 1978 (Report No. 50-358/78-25) Areas Inspected: Special Inspection of the installation of electrical cables and components and review of related quality records.
Results: No items of noncompliance or deviations were identified.
7 9010 5 00W
. DETAILS Persons Contacted Cincinnati Gas and Electric Company (CG6E)
- B.
K. Culver, Manager of Construction
- R.
P. Ehas, QA6S Engineer
- W.
W.
Schwiere, Principal QA65 Engineer Kaiser Engineers Incorporated (KEI)
- R.
Marshall, Project Manager
- R.
E. Turner, QA Manager
- Denotes those present at the exit interview.
The inspectors also contacted other employees and craftsmen during the inspection, including representatives of CGSE, KEI, Foothill Elect ic Company (Foothill), and Reactor Controls, Inc., (RCI).
_ Functional or Program Areas Inspected Purpose of Inspection on October 12 and 16, 1978, the RIII office received information by telephone from an individual who had concerns about certain electrical construction activities at the Zimmer site.
However, on October 17, 1978, the Rill office was notified by this indivi-dual that he no longer had these concerns and that he would not discuss this matter with the NRC any further.
Following an evaluation of the aforementioned events by RIII manage-ment, the decision was made to perform a special inspection at the Zimmer site to make independent observations of electrical construction activities which involved those areas of concern that had been reported to Region III.
The results of those independent observations are documented as follows.
1.
Cable Tray Systems a.
The RIII inspector observed that cable tray riser sections RK1153, R1154 and Rll55 located in the Reactor Building at elevation 525' have 3/8" holes drilled in the back of the risers. In response to questioning, the licensee presented the inspector with Design Document Change (DDC-E-3665) dated September 22, 1978.
The purpose of-2-
this design change was due to certain riser configuration (S-type) and loading (overfill), which allows installation of cable ties to hold cables within the cable tray pan, b.
The RIII inspector observed that side rail extensions were in various areas being installed on existing cable trays throughout the plant. Further review in this area established that when cide rail extensions are required to increase the capacity of the tray system, due to overfill of cables, they are to be installed in accordance ai+h an approved drawing.
S6L drawing E-13-2, revision F, dated May 8, 1978 incorporated design document change DDC-E-2599
regarding the side rail installation details, was being used.
The inspector also observed that KEI is draf ting an inspection procedure for the inspection of the installed side rail extensions.
c.
The inspectors observed that cables, not properly supported, have been identified as a generic condition.
Examples of this condition being addressed are documented in non-conformance reports numbered NR2450 and NR2481.
It was noted that several nonconformance reports addressing similar nonconforming conditions have been " voided;" the inspector was informed that in each case, inspection personnel were informed as to why the reports were " voided."
d.
The inspectors observed that protective softeners are being installed on the edges of cable trays (where sharp edges may damage the cable jackets).
Additionally, it was observed that inspection of cable trays for sharp edges is one of the required installation inspection checkpoints which have not yet been completed for all cable tray installations. CG6E and Kaiser quality assurance personnel informed the inspectors that the protection of cables from sharp edges is an on-going surveillance type of inspection activity.
e.
The inspectors observed that design document changes DDC 3602 and 3603 were written about the unsatisfactory installation supports of "nonsafety" cable trays installed above annunciator panels IPA 04JA and-3-
1PA04JB.
The inspector was informed, by Kaiser OA personnel, that S&L is designing cable hangers to . correctly support those cable trays identified in the above listed DDC's.
f.
The inspectors observed that a nonconformance report NR No. N-638 has been written to document and require repair of " associated" cables which have been damaged by being walked on.
NOTE: Associated cables are "non-safety" non " Class lE" electrical cables which have been associated with " Class 1E" cables during their installation. For example, if a non Class lE cable is routed through any portion of a Class 1E race-way system, the cable will be identified as an associated cable for that particular electrical division.
g.
The inspectors spot-checked various areas of the plant and observed that there are cases where cables jump cable trays without being routed through conduit.
However, in each instance (where the inspectors made these observations) the Kaiser quality assurance personnel had previously identified the nonconformance.
The inspector noted that this is an ongoing inspection function which the assigned Kaiser cable installation inspectors are required to perform.
h.
The RIII inspector reviewed Design Document Charge DDC-E-3710 dated October 3, 1978 which addresses overfill _onditions of the cable tray system.
It was also learned that the site engineers are continuously evaluating cable tray overfill and are taking necessary corrective action to prevent further overfill of tray systems.
1.
Concerning Class lE cables stored on reels and electrical switchgear stored inside permanent buildings, the inspectors observed: - At least 15 cable reels were stored in a controlled located in the Turbine Building.
The cables had area their ends sealed with tape and were stored in rows such as not to allow the sides of the reels to over-lap adjacent reels.
- The internals of at least 15 Class 1E electrical panels were inspected for cleanliness.
The _4_
. . inspectors observed that two of the panels contained ' metal filings on the floor. The two panels (lPL103B and 1PL103C) had been identified by Kaiser quality assurance personnel in nonconformance numbered NR2149, which has not been closed.
report During the exit interview, the inspectors were these two panels were being cleaned informed that at the time of the exit interview and that the NR would be closed before the end of the day.
2.
Conduit Installations The inspector observed that the conduit and cables a.
identified in nonconformance report E1270 had been removed. The inspector was informed that the conduit the cables, and cables will be replaced such that contained within the conduit, will not exceed their minimun bend radius.
b.
The inspector observed that the ground cables for all sleeves have not yet been installed and conduit the entire inspected. The inspector was informed that raceway grounding system will be inspected on an area basis in accordance with a grounding inspection procedure which is in draft form.
It was established the grounding procedure will be ready for that implementation by November 27, 1978.
3.
Records A review of the surveillance reports log and copies of It was learned that a.
selected separate reports was made.
earlier in the year, prior to July 1978, some surveillance reports had not been converted to nonconformance reports (NR's) af ter the thirty day limitation as required by the procedure (G-14 revision 1).
In response to questioning, the inspector was informed that this failure had been identified by KEI personnel and that a systematic review of all surveillance reports was undertaken to review all to NR's if necessary.
reports and closecut or convert This task is currently in progress and appeared to the The inspector inspector to be approximately 75% complete.
SR-1236 inquired as to the status of surveillance report regarding grounding of electrical system and learned that although this report is still open, it is being addressed _5_
. . and by a by DDC SLE-287 regarding grounding standards,
draft Construction Inspection Plan (CIP) being prepared It was specifically for the grounding system inspection.
added that although the electrical grounding system is not considered to be safety related, the licensee has directed that the CIP be prepared and performed, b.
The NR control log was reviewed by the inspector. All NR's issued receive control numbers (CN's) while essential (safety related) NR's are additionally To date, sequentially numbered preceeded by the letter "E".
a total of 2631 NR's have been issued with 1411 E category NR's.
As of this date in excess of 600 NR's (CN's) are currently In response to questioning it was in an open status.
a weekly tabulation of open NR's is issued learned that weekly to all managers with those NR's available to be worked on highlighted. In addition, a monthly computer A number of NR's run is issued for further information.
were reviewed that had been voided, NR's 2578, 2579, 2580, 2581, 2393, 2394, 2395, 2396 all were voided on October 10, These all were relative to cable placing in the 1978.
trays and all were voided with the notation "see DDC 3710."
No example was observed by the inspector of voided NR's without a justification.
The inspector did learn that at one time a few voided NR's were not maintained as records, however, a new revision is being issued to QAP 16 (Rev. 3) that will require voided NR's to be maintained as a record.
The inspectors reviewed the training records for assigned site electrical inspection personnel.
The records indicated c.
personnel are being familiarized with the applicable that requirements before being assigned to conduit inspection The inspector noted that an internal audit functions.
of Kaiser (Audit report number 345) identified some concerns. Also, that action is being taken to resolve those concerns.
Exit Interview inspectors met with licensee representatives (denoted in the The the conclusion of the inspection Persons Contacted paragraph) at 26, 1978. The inspectors outlined the scope of the on October inspection and presented the results of inspection for each identified concern.
In conclusion, the inspectors indicated-F-
' - .. that no items of noncompliance or unresolved matters were
identified as a result of the inspection, and further indicated that they had no further questions.
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