IR 05000546/1981012
| ML20030D578 | |
| Person / Time | |
|---|---|
| Site: | Marble Hill |
| Issue date: | 08/19/1981 |
| From: | Hawkins F, Schweibinz E, Williams C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20030D575 | List: |
| References | |
| 50-546-81-12, 50-547-81-12, NUDOCS 8109010548 | |
| Download: ML20030D578 (5) | |
Text
-
_
-
.
n U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT
..
REGION III
Report Nos. 50-546/81-12; 50-547/81-12 Docket Nos. 50-546; 50-547 License Nos. CPPR-170; CPPR-171 Licensee: Public Service of Indiana Post Office Box 190 New Washington, IN 47162 Facility Name: Marble Hill Nuclear Generating Station, Units 1 and 2 Inspection At: Marble Hill Site Jefferson County, IN Inspection Conducted:. July 21-23 and 28-30, 1981
/
\\
l
.
'i W
Inspector:
F.
Hawkins 8/ll/ 8 l
'
E 2'
'
h / 7-[ [
E. R. Schweibinz (in-office review)
Approved By:
C. Williams, Chief
[///
/
Plant Systems Section
Inspection Summary Inspectica on July 21-23 and 28-30, 1981 (Reports No. 50-546/81-12; 50-547/81-12)
Areas Inspected:
Review of procedures, observation of wotN, review of quality records relative to concrete repair activities and review of the revised Con-struction and Material Verification Program, Final Report. The inspection consisted of 48 inspector-hours onsite by one NRC inspector.
Results: No items of noncompliance or deviations were identified.
l l
8109010548 810820 PDR ADOCK 05000546
@
.
DETAILS-Persons Contacted Public Service of Indiana (PSI)
- L. Ramsett, Executive Director - Nuclear Quality Assurance
- B.
Morrison, Quality Engineering Superintendent - Civil G. Warner, Civil Construction Engineering Manager
- C. Togni, Chief Civil Engineer R. Mustafa, Second Shift Coordinator C. Anthony, Concrete Patching Engineer J. Phillips, Concrete Patching Engineer L. Worley, Quality Engineer B. Palmer, Construction Surveillance Specialist - Civil D. Downs, Senior Laboratory Inspector C. Robinson, Lead Field Concrete Technician
- S. Gordy, Quality Assurance Administration Supervisor Newberg Construction Company (N-MH)
D. Stegemoller, Vice President Power Construction C. Barbour, Project Quality Assurance Supervisor D. Maxwell, Project Quality Control Supervisor H. Wenzel, CERP Coordinator M. Swinford, Supervisor - Special Projects P. Burton, Quality Control Inspector R. Clements, Quality Control Inspector R. McCullough, Quality Control Inspector D. Reed, Quality Control Inspector L. Schaffert, Quality Control Inspector T. Price, Cement Finisher Superintendent Sargent & Lundy Engineers (S&L)
A. Weiss, Concrete Technologist G. Scibona, Structural Engineer United States Testing Company (UST)
M. Fightmaster, Technician W. Fousse, Technician
,
Indiana Gunite & Construction Company J. Johnson, Shotcrete Nozzleman
- Denotes those attending the exit interview.
-2-
.
.
...
.
.,_
.-,. - _. ~
,
--
-
-
____
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
.
Functional or Program Areas Inspected This inspection consisted of procedure and quality records review relative to concrete repair activities.
In process repair activities were also observed. There are three major categories into which the concrete repair techniques used at Marble Hill can be classified: Shotcrete, dry pack, and pour back. The specific results of the inspection in each area are documented in the following sections of this report.
1.
Shotereting Activities Dry mix process shotcreting activities on repair areas S691-2 CP45, S679 RA25, and S694-2 RA9 were observed.
a.
Observation of Work - The following inspection attributes were verified through observation on the in process work.
-
Type II cement and sand were proportioned as specified by the approved mix design.
-
The cement and sand were mixed in accordance with WPN-25, Section 10.3.
-
The areas were prepared for shotcrete application in accord-ance with WPN-25, Section 6.2 and ACI 506, Chapter 6.
-
Shotcrete was applied in accordance with the requirements of WPN-25, Section 10.and the guidelines of ACI 506, Chapter 6.
.
-
Finishing of the completed patches was accomplished in accordance with WPN-25, Section 10.8.
-
Curing was accomplished in accordance with WPN-25, Section 10.9.
-
N-MH QC inspection personnel were present to verify conform-ance of the ongoing work to QCP 10.06 requirements.
b.
Review of Quality Records - The following documentation was reviewed to verify its conformance to procedural requirements.
-
The Gunite Repair Inspection Checklist, as required by QCP 10.06, was properly completed for each area by the responsible N-MH QC inspector.
Concurrence of the proposed repair technique by an S&L representative,in accordance with QCP 10.06, was also verified.
Documentation concerning the sampling and testing of shotcrete
-
sand, to determine moisture content, was reviewed. The samples and tests were performed at the frequencies specified by labora-tory p;seedure QCP-2.
-3-
_-
..
_
__.
'
.
i i
!
2.
Dry Pack Activities
The repair of area S672 CP14, using a mortar consistency dry pack material was observed on July 28, 1981.
Observation of Work - The following inspection attributes were a.
verified through observation of the in process work.
i l
-
The dry pack mix was proportioned and mixed in accordance with WPN-25, Section 9.2.
i The arai was prepared for dry pack installation in accordance
'
-
,
with WFN-25, Section 6.2.
I
-
The mortar consistency dry pack was'placed in layers of not more than 1/2 inch deep and i ch layer was given a scratch finish as required by WPN-25, Section 9.8.
Wet curing for the first 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after completion of the
-
patch and subsequent application of curing compound in accordance with WPN-25, Section 9.9, was verified.
-
In process compressive strength testing of the dry pack l
material, as required by laboratory procedure QCP-3, was
. verified.
i
-
N-MH QC inspection personnel were present to verify confor-mance of the ongoing work to QCP 10.06 requirements.
'
i b.
Review of Quality Records - The following documentation was reviewed to verify its conformance to procedural requirements, i
!
The area was properly released for repair by the personnel
-
!
designated on Attachment 2 (Honeycomb Report) of QCP 10.06.
i
-
The Dry Pack Inspection Checklist, as required by QCP 10.06, j
was properly completed by the responsible N-MH QC inspector.
i l
3.
Pour Back Activities
!
The repair of area S688 RA31 using proprietary non-shrink grout was
observed on July 22, 1981. The grout was placed using a pressure l
injection technique.
l
.a.
Observation of Work - The following inspection attributes were
'
verified through observation of the in process work.
i The proprietary non-shrink grout was confirmed to be the
-
!
!
type specified by WPN-25, Section 8.5.1.
!
(
-
Grout consistency was determined, as required by WPN-25,
Section 8.5.2, by conducting a flow cone test (CRD-C79-77).
[
!
r I
'
-4-
_ _ -, _ _ _ _ -. _.... _ _ _ _, _.... _, _ _ _ _ _ _ -, _ _. _. _, _, _ _ _ _. _, _.. _. _., _ _ - _ _ _,
-
._
,...
The repair area was formed and vented in accordance with
-
WPN-25, Section 12.6.
-
The repair area was prewetted for a minimum of one hour prior to placement as required by WPN-25, Section 12.
-
N-MH QC inspection personnel were present to verify confor-mance of the work to QCP 10.06 requirements.
-
Two inch cubes were cast by testing laboratory personnel as required by WPN-25, Section 12.7.
-
Curing of the completed repair was verified to be in accordance with WPN-24, Section 12.8.
b.
Review of Quality Records - The following documentation was reviewed to verify its conformance to procedural requirements.
i
-
The area was properly released for repair by the personnel designated on Attachment 2 (Honeycomb Report) of QCP 10.06.
-
The Pressure Grouting Inspection Checklist (QCP 10.06) was confirmed to be properly completed.
-
The Proprietary Grout Inspection Checklist (QCP 10.06) was confirmed to be properly completed.
-
The Preplacement Inspection Checklist and the Concrete Placement Release Sheet (QCP 10.02) were properly completed
.
'
by the responsible N-MH personnel.
4.
Curing i
The curing of thirty-eight completed and partially completed concrete patches was verified on July 29, 1981 by touring the plant with the responsible N-MH QC inspector and the curing foreman. The Concrete Curing Card (QCP 10.04) for each patch was current.
i l
5.
Review of the Revised Construction and Material Verification Program, Final Report An in-office review of the revisions made to the Construction and Material Verification Program, Final Report, issued May 15, 1981, was conducted. The orginal report was issued on September 12, 1980.
All revisions were found to be acceptable.
Exit Interview
-
The inspector met with staff representatives (denoted in the Persons Contacted paragraph) during and at the.onclusion of the inspection.
The inspector summarized the scope or the inspection.
!
i-5-
-
-
-
- -
-
-
.
..
. -
.
.
-