IR 05000261/1988021
| ML14191A994 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 08/26/1988 |
| From: | Blake J, Robert Carrion NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML14191A993 | List: |
| References | |
| 50-261-88-21, IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8809140336 | |
| Download: ML14191A994 (5) | |
Text
f REG UNITED STATES NUCLEAR REGULATORY COMMISSION
REGION II
o 101 MARIETTA STREET, ATLANTA, GEORGIA 30323 Report No.:
50-261/88-21 Licensee:
Carolina Power and Light Company P. 0. Box 1551 Raleigh, NC 27602 Docket No.:
50-261 License No.:
DPR-23 Facility Name:
H. B. Robinson Inspection n, cte :
gAuqust 9, 1988 Inspector:
r i~i,{Date Signed Approve by:./ Blake, Chief Date Signed Mp{e ials and Processes Section Engineering Branch Division of Reactor Safety SUMMARY Scope:
This routine, unannounced inspection was conducted in the areas of IEB 79-02, Pipe Support Base Plate Design Using Concrete Expansion Anchor Bolts and IEB 79-14, Seismic Analysis for As-Built Safety related Piping System Results:
In the areas inspected, violations or deviations were not identifie The licensee demonstrated a high level of safety consciousness throughout its organization including management, engineering staff and craft employees. ALARA considerations were given a high priority during the support verification walkdown. The support calculations were readily available, in good physical condition, and had been done in a professional manner, using applicable codes and standard PDR ADOCK 05000261 G
PNU
REPORT DETAILS 1. Persons Contacted Licensee Employees
- D. Baur, Q.A. Supervisor G. R. Campbell, Senior Engineer-Civl/Stress
- J. M. Curley, Director of Regulatory Compliance
- W. J. Flanagan, Manager of Modification Implementation
- S A. Griqgs, Aide - Regulatory Compliance
- E M. Harris, Jr., Director of Onsite Nuclear Safety
- E M. Harris, Jr., Director of Onsite Nuclear Safety D. A. Sayre, Senior Specialist - Regulatory Compliance
- V. K. Stephenson, Project Engineer -
Stress -
NED
- H. L. Williams, Principal Engineer -
Civil -
NED Other licensee employees contacted during this inspection included technicians and administrative personne NRC Resident Inspector
- L. W. Garner, Senior Resident Inspector
- Attended exit interview 2. Licensee Action On Previous Enforcement Matters (Closed) IEB 79-02,
"Pipe Support Base Plate Design Using Concrete Expansion Anchor Bolts," and IEB 79-14, "Seismic Analysis for As-built Safety-related Piping Systems."
IEB 79-02 concerns the fact that factors of safety presented in manufacture's publications were developed in ideal, laboratory conditions and are not necessarily representative of actual installation practices, especially when seismic and cyclic loadings are considere The licensee was required to verify:
factors of safety between the bolt design load and the bolt ultimate capability, that base plate flexibility was taken into account in the calculation of anchor bolt loads, that the specified design size and type was properly installed, et IEB 79-14 concerns the analytical technique for combining seismic loads and the validity of input information for seismic analysi The licensee was required to assure that seismic analysis of safety-related piping systems accurately reflect the as-built configuration of the plan In the course of the inspection, numerous CP&L instructions and procedures of Plant Modification M-492, entitled "As-Built Safety-related (Q-List)
System Piping Analysis" were reviewed, including "Anchor Bolt Installation Instructions," "Grouting Instructions," "Restraint Modification Forms,"
"Welding Procedures,"
"Design Basis,"
and
"Inspection Acceptance
Criteria."
Also, the EBASCO "IE Bulletins 79-02/79-14 Program Procedures Manual" was reviewed with an emphasis on the following:
N Re Title of Procedure 79-14/M1
Preparation of As-Built Stress Isometric Drawings 79-14/M2
Pipe Stress As-Built Evaluation and Design Comparison 79-14/M3
Pipe Stress Analysis 79-14/M4
Procedure for Site Review of Benchmark Packages 79-14/Cl
Seismic Restraint A's-Built Sketch Preparation 79-14/C2
Comparison and Evaluation of As-Built Seismic Restraints 79-14/C3
Seismic Restraint Analysis and Design 79-14/C-4
Cutting of Concrete Reinforcing Steel Associated with Installation of Anchor Bolts in Existing Concrete Structures 79-14/C-5
Seismic Restraint As-Built Weld Analysis 79/14/C-7
Seismic Restraint Modifications 79-02/PP-1
Verification of Anchor Bolts and Base Plates Under the Requirements of I.E. Bulletin No. 79-02 The inspector conducted a field walkdown of 17 supports included in the 79-02/79-14 Modification to Compare the As-Built Configuration, including welds, member size, geometry, etc., to the hanger drawin Also checked were the hanger attachment points to the piping compared to their respective locations according to the isometric drawing The supports were selected in a manner to obtain a representative sample of different sized piping as well as different support arrangements. Pipes ranged from the 24"0 Auxiliary Coolant Line to the 2"0 Demineralizer Water Lin Drawings of the supports walked down include:
Drawing N Re AB-CAR-AC-3-14/N3
-AC-3-1175
-AC-3-1211
-DG-1-24/1
-DG-1-24/2
-DG-1-24/3
0;
Drawing N Re DG-1-24/4
-DG-1-24/5
-DG-1-H-1
-DG-1-H-7
-DW-3-121/1
-DW-3-156/1
-DW-3-H1
-DW-3-H2
-DW-3-H3
MOD-CAR-DW-3-2001
-DW-3-2021
In addition, the following isometric drawings were reviewed in conjunctio with the above-referenced support drawings:
Drawing N Re Title AC-3 SH2 of 4
Auxiliary Coolant From Surge Tank to Component Cooling Pumps DG-1 SHi of 1
Starting Air Lines From Air Receivers 'A' & 'B'
DW-3 SH1 of 7
Demin Water From Primary Water Pumps A & B Also, the following calculations were reviewed in conjunction with the above-referenced supports to assure that anchor bolt and seismic concerns had been properly addressed:
79-14 Closeout Restraint Analysis Package AC-3-14/N3 AC-3-1175 AC-3-1211 DG-1-24/1 DG-1-24/2 DG-1-24/4 DG-1-24/5 DG-1-H-7 DW-3-H1 OW-3-H2 DW-3-H3 DW-3-2001 DW-3-2021 Because no deviations or violations were identified in the course of this investigation, the inspector concluded that the requirements for IEB 79-02 and IEB 79-14 have been satisfied and that they are, therefore, close *
4 Exit Interview The inspection scope and results were summarized on August 5, 1988, with those persons indicated in Paragraph 1. The inspector described the areas inspected and discussed in detail the inspection results listed belo Proprietary information is not contained in this repor Dissenting comments were not received from the licensee.