ML20147B600

From kanterella
Jump to navigation Jump to search
Responds to 780804 NRC Ltr Re Deviation Noted in Inspec Rept 50-461/78-05.Believes That Item a Is Not Noncompliance. Details Corrective Measures Taken for 11 Other Items
ML20147B600
Person / Time
Site: Clinton Constellation icon.png
Issue date: 08/31/1978
From: Gerstner W
ILLINOIS POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20147B595 List:
References
U-0076, U-76, NUDOCS 7810110057
Download: ML20147B600 (3)


Text

. . . . _

q =

'uJ ' ,

, U-0076 ILLINDIS POWER COMPANY Q37-PU-78(08-31)-9 ,

'*1 500 SOUTH 27TH STREET, DECATUR, ILLINOIS 62520 August 31, 1978 Mr. James Keppler-Director, Region III Office:of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137'

Dear Mr. Keppler:

This is in response to your letter of August 4, 1978, which

' forwarded IE Inspection Report No. 50-461/78-05, detailing the findings of the NRC/R0 III inspection conducted at Illinois Power Company's Clinton Power Station site on May 31 - June 2,1978.

The response to the infraction items contained in the report is described below and correlated directly to the sequential listing in Appendix A to yourtletter.

A. Illinois Power has concluded that Item A of your report is not a matter of noncompliance. This conclusion is based on the fact that ACI 318-71, Appendix A, permits alternate methods of design. Consequently, S&L selected ASME Section'III, Division 2 (1977) for this purpose. Although this results in a conservative design, it nonetheless permits the construction conditions which you observed, i.e., more than 50 percent of the bar splices may be in any horizontal plane.

B. Applicable project specifications have been revised to omit ASTM E-329 requirements for tri-annual CCRL inspections. The site testing agency (USTCo.) has advised IP that, based on conversations with the NRC Division of Reactor Construction and Inspection, CCRL certification ' requirements in accordance with ACI 301 are inappropriate for CPS.

C. (1) The cadweld manufacturer (ERICO) has advised IP that filler material " flashing" at the end of vertical cadweld splices does not affect the performance of the splice, provided other inspection criteria are met. Instruction and training has been given to emphasize proper packing at the ends of sleeves prior to firing. However, the associated inspection criteria have been modified to indicate the acceptability of fla'shing if it occurs.

5. y b B78

.~77 /d/lvp5 7

August 31, 1978 Mr. James Keppler F

cadweld #1-DWV-39-1 C. (2) The porosity at the end of containmentThis is acceptable according is fine and widely dispersed.

to written information we have obtained from the cadweld manufacturer. Project specificatons and inspections re-quirements have been modified to clarify acceptance criteria.

Baldwin Associates Liquid Penetrant Examination Procedure is D. (1) BTS 301.2 has been temporarily withdrawn untif it qualified for a lower temperature limit of 45 F andIt has b reissued.

for the recovi were performed on permanent plant installa-g tions below 45 F.

(2)

Corrective action for this item was taken during your D.

inspection. No further response is necessary.

D. (3) NDE personnel certifications for Baldwin Associa tive examinations at the CPSExperience site have been amended to recorded is document their experience. levels of qualification.

appropriate to the individuals' E. (1) While the document used to record the additional weldi on Type 'B'the work specified and recorded onUse thisofform thisis new weldin performed per approved welding procedures. form is mere issuance of complete new work packages for such work.

The form properly records the new welds and will continue to be used.

sleeves of the nature addressed in your E. (2) Welds on Type 'B'are now being examined using the same NDE m report as that used on the original weld.834, 1125, and 1187 have be in NCRs with the engineer's disposition instructions and found accep table .

F. The gap between reinforcing bar ends noted during the fitted IE inspec-tion was associated with bars which had not been finallyThe the prior to splicing. Final inspection of these bars was performed at inspection.

appropriate time, and they were found to be acceptable.

G.

Baldwin Associates Procedure 1.9 addresses the handling, pre-servation, and cleaning of stainless steel in general terms. 1 Provisions of this procedure are applicable to stainless steel (NCR) w A nonconformance report h within containment.

to control the concrete contamination situation This area has beennoted Measures on te l drywell wall during the IE inspection. cleaned, inspected, andi 1

i

5,' Mr. James Keppler August 31, 1978 1

have been established to prevent future recurrences of similar conditions. These measures include use of temporary protective coverings to the. extent possible and appropriate cleaning during'the concrete pour process.

H. The Type 'B' cadweld sleeves found to.be improperly preserved during storage have been cleaned and recapped. Procedures  !

have been established for periodic inspection of these sleeves.

in storage. Additionally, procedures assure proper clean 11-ness levels in these sleeves prior to splicing. Metal storage containers have been provided for cadwelding tools in the work areas and are in use.

It is believed that the foregoing adequately addresses each item of noncompliance conveyed in your report. I trust that this completes our corrective action to your satisfaction.

Sincerely, W. C. Gerstner Executive Vice President RSU/jh 1

l 1

l 1

1 l

1

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