IR 05000395/1979023
| ML19249C935 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 07/31/1979 |
| From: | Ang W, Herdt A, Wilcox J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19249C930 | List: |
| References | |
| 50-395-79-23, NUDOCS 7909190304 | |
| Download: ML19249C935 (4) | |
Text
.
.
UNITED ST ATES
/
'o, l'
. gf'
,o NUCLEAR REGULATORY COMMISSION
'
REGION il
"/ ' [$
O-101 M ARIETT A sT., NR, sulT E 3100
o, AT L ANT A, CEORGI A 30303
'%/
e*
- ....
Report No. 50-395/79-23 Licensee: South Carolina Electric and Gas Company Columbia, South Carolina 29218 Facility Name: Summer Nuclear Plant Docket No.
50-395 License No. CPPR-94 Inspection at Summer Nuclear Plant near Columbia, South Carolina
~7 ' 3 ' ' i Inspectors: '1 -
%
Date Signed f.AngMDaR 7-u - n Wl{ox
/
's Date Signed J.'
fb!NN 7'3/ ' 7[
Approved by:A. R. Herdt, Section Chief, RCES Branch Date Signed SIM1ARY Inspection on July 11-13, 1979 Areas Inspected This routine, unannounced inspection involved 32 inspector-hours on-site in the areas of concrete expansion anchor procedures, work activities and records; and steam generator water level indication 10CFR Part 21 report.
Results Of the areas inspected, no items of noncompliance or deviations were identified.
ib3 g
'; hO
'
700919030i
_. - -.
-
.
.
.
DETAILS 1.
Persons Contacted Licensee Employees
- D. A. Nauman, QA and Security Group Manager
- J. Algar, Site Manager
- A. A. Smith, Site QA Coordinator
- R. B. Whorton, Engineer Other Organizations Gilbert Associates, Inc.
- H. A. Bamberger, Resident Engineer
- Eshback, Structural Engineer
- Glova, Engineer
- D. Delp, Piping Engineer
- Attended exit interview.
- Contacted by telephone at Redding, Pennsylvania.
2.
Exit Interview The inspection scope and findings were summarized on July 13, 1979 with those persons indicated in paragraph 1 above. The licensee was advised that no items of noncompliance or deviations were identified during this inspection.
Inspector questions regarding licensee response to IE balletin 79-02 were discussed.
3.
Licensee Action on Previous Inspection Findings Not inspected.
4.
Unresolved Items Unresolved items were not identified during this inspection.
5.
10 CFR Part 21 Report (Open) Item 395/79-23-01: Steam Generator Level Indication.
On June 21, 1979 the vendor issued a 10 CFR 21 report to inform Region II that there is a potential difference between actual and apparent steam generator water level indications.
South Carolina Electric and Gas Company has provided Region II with a copy of the letter describing this situation (CGWS877 dated 6/25/79). This item will remain open
-
pending issuance of the licensee's final report, completion of corrective action and review by Region II.
-
,
S 65'
~
.
.
%
.
'
-2-Concrete Expansion Anchor Procedures, Work Activities and Ree>rds 6.
SCEG submitted via E. H. Crews letter dated July 5, 1979, a response
,
to IE Bulletin 79-02. The response stated that a " design review wasThe performed on a representative sample of safety-related supports".
response further stated that "QC documentation that design requirements have been met exists for 100% of the expapsion bolts".
TheSCEGresponsetoIEBulletin79-02was$eviewedwithSCEGengineers
at the Colutbia, SC office and discussed by telephone with the Gilbert a.
The response was Associatec, Inc., engineers at Redding, Pennsylvania.
reviewed for ad quacy and compliance with IE Bolletin 79-02.
The following procedures and,. test documentation were reviewed s
for compliance with the licenesee's response and IE Bulletin 79-02 requirements: -
,
(1) Daniel Construction' Procedure 11I-18 Rev.
5, Inspection of Drilled in Expansica Bolts Daniel Construction Procedure VII-07 Rev. 7, (2)
Inspegtion of fabrication and Installation of pipe hangers and supporfc
,
,
(3) Hilti site test procedure and SCEG site resalts for
'
deterrination of torque values for specified displacement
,
loads.
Hilti report on torque requirements for installstion~and (4)
subsequent QA inspection of Hilti Fwik Bolts datedi.
September 16, 1977.
,
On site, the QC inspection documentation for the..follcwing haagers and b.
The hangets weic subsequently supports were obt,afaed and reviewed.
inspected f ar conformance to design' requirements and were specifically inspected for bolt length by ultrasonic testing (performed by Daniel Const ruction Company QC), embedment depth, and preload torque values.
.
(0 RH!!-123 (2) RHH-124 (3) CSH-300 e.
,
'
(4) RHH-229
-
(5) SIH-105
-
(6) SIHa084 (7) CSH-319 (8) SIH-103
.
--
(9) RMH-256
-
(10) RKtP237
\\
'
,,
.
d'
(
'
'
i
-
.
.
.
.
-3-t The following comments and questions regardingthe licensees response c.
to IE Bulletin 79-02 were identified to the licensee:
(1) The licensee response and discussion with the licensee indicate that most safety-related pipe support baseplates were not originally analyzed as flexible plates but due to IE Bulletin 79-02's 2:1 ratio criteria, the licensee performed an analysis using a method in which the effects of plate flexibility, anchor preload, and shear -tension interaction were considered. Of a population of approximately 700 base plates, a sample of 96 base plates of the various configurat. ions used were analyzed. Of the 96 analyzed, 10 base plates showed factors of safety of less than 4 for the faulted and upset load conditions. The licensee did not address action to b taken to correct those base plates that had less than 4 safkty factors. Furthermore, the relatively high number (More than 10%) of baseplates that do not have a safety factor of 4 indicates a need to expand the sample to identify and correct baseplates with safety factors that are less than 4 to the extent that system operability can be assured.
Additionally, since base plate analysis many not yet have been performed for future installations, future analysis methods should be identified (i.e.
rigid or flexible).
(2) The licensee response mentioned an on going investigation regarding concrete expansion anchor spacing requirements.
Results of the investigation and corrective action taken should be submitted as part of the response to the bulletin.
(3) The licensee response stated that inspection for adjacent bolts (spacing), minimum embedment depth and thread engagement would be included on inspections subsequent to issuance of IE Bulletin 79-02. These inspections were not Licensee recorded prior to January 1979 in most cases.
action to assure installation compliance with design requirements and corresponding documentation must be addressed as part of licensee's response to IE Bulletin 79-02.
Pending licensee action for the questions and comments regarding d.
licensee's response to IE Bulletin 79-Pt., rid pending completion of IE Bulletin 79-02 requirements, tV
'sulj2 tin shall be held No items of noncompliance rg m.itie s were identified.
open.
\\ 'O c
t, ($
__
_
_.
.
..___
,