ML18043A989
| ML18043A989 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 08/01/1979 |
| From: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 7909040340 | |
| Download: ML18043A989 (7) | |
Text
.
consumers Power company General Offices: 212 West Michigan Avenue,.Jackson, Michigan 49201
- Area Code 517 788-0550 August 1, 1979 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET.jQ-2~5-- LICENSE DPR PALISADES PLANT - IE BULLETIN 79-14 Item l of IE Bulletin 79-14 (Seismic Analyses for As-Built Safety-Related Piping Systems) requires response by August l, 1979.
Consumers Power Company's response is attached.
Along with our response is a set of drawings which will be distributed as follows:
1 Set to Region III l Set to Office of Inspection and Enforcement, Washington,*DC This is in accordance with telephone instructions from Mr Boyd of Region III.
on July 27, 1979*
David P Hoffman Assistant Nuclear Licensing Administrator CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement 6 ts19 7909040"3'(0 I
Item 1 of IE Bulletin 79-14 Identify inspection elements to be used in verifying that the seismic analysis input information conforms to the actual configuration of safety-related systems.
For each safety-related system, submit a list of design documents, including title, identification number, revision and date, which were sources of input information for the seismic analyses.
Also, submit a description of the seismic analysis input information which is contained in each document.
Identify systems or portions of systems which are planned to be inspected during each sequential inspection identified in Items 2 and 3.
Submit all of this information within 30 days of the date of this bulletin.
Response
I.
INSPECTION ELEMENTS Paragraph 1 of IE Bulletin 79-14 requests "identification of inspection elements to be used in verifying that the seismic analysis input information conforms to the actual configuration of safety-related systems."
A two-stage program is scheduled.
The first stage is inspection of normally accessible nonredundant systems and one set of redundant systems. If no significant deviations are found, this will be reported and the second stage (inspection of the remainder) may not be completed.
The inspection elements are identified as follows:
A.
FOR PIPING SYSTEMS OVER 2 INCHES
- 1.
Survey the actual installed piping geometry, supports (location, function and clearance), valves and valve operators, including type, location and weight to verify that these items conform to design documents.
Piping geometry will be compared with fabricator isometrics while supports, valves and operators will be compared with fabricator drawings.
A variety of inspection methods will be used, such as measuring tape (or similar measuring equipment) for piping geometry, visual comparison of piping supports with the support drawing, ete.
In-sulation will not be removed to facilitate inspection.
- 2.
Compare the inputs to seismic analysis with composite drawings and with fabricator drawings.
B.
FOR PIPING SYSTEMS 2 INCHES AND UNDER
- 1.
These piping systems were installed to criteria designating sup-port location; ie, the chart method as opposed to computer analysis.
The chart method is conservative; therefore, 2-inch and under piping is excluded from this response and evaluation.
II.
DESIGN DOCUMENTS 2
~aragraph 1 of IE Bulletin 79-14 requests that a list of design documents, including title, identification number, revision and date, which were sources of input information for the seismic analysis for each safety-related system, be provided.
Also requested is a description of the seismic design analysis input information which is contained in each document.
The following is provided:
A.
PIPING GEOMETRY Computer seismic analysis was performed utilizing the composite area drawings listed in Appendix A.
B.
SEISMIC RESPONSE SPECTRA Appropriate floor response spectra were developed and utilized in analysis of safety-related piping systems.
These spectra are being provided to the NRC staff as part of the systematic evaluation program and, therefore, are not included.
C.
PIPING AND FITTING SCHEDULES Data on piping and fitting schedules are listed in Document 5935-M-259, Revision 9 (12-20-78), "Piping Class Summary."
Insulation information is also included in this document.
D.
PRESSURES AND TEMPERATURES Data on pressure and temperatures is listed in Document 5935-M-260, Revision 7 (10-20-78), "Piping Class Sheets."
E.
SUPPORT, V.ALVE Ai'ID VALVE OPERATOR DATA Weights, type and other information related to pipe supports, valves and ~alve operators was taken from various Vendor and Owner drawings.
For example, valve outline drawings received from.valve manufacturers contain the valve weight,. operator weight and dimensions of operators.
Support drawings show the ~igidity and load capability of pipe supports.
This information is on file.
III.
IDENTIFICATION OF SYSTEMS Applicable piping in the safety systems identified by the Palisades FSAR, Appendix A, will be evaluated except as follows:
A.
Radioactive waste treatment piping evaluation will be confined to the gaseous system with the exception of a portion of the liquid discharge release line, plus related containment penetrations.
B.
Plant instrument air piping evaluation will be confined to the high-pressure air-operated valve system and containment penetrations.
3 Appendix B of this response lists the system drawings which include the specific lines being evaluated.
IV.
£CHEDULE FOR INSPECTION OF SYSTEMS Appendix B lists those systems which have portions of seismic piping.
Appendix B also categorizes inspection of that portion of the system which has seismic piping as follows:
Category A - Inspection of *normally accessible redundant portions will be completed by August 31, 1979*
The remainder of seismic piping will be completed by October 30, 1979.
Category B - Seismic piping portion of the system not *normally available.
Inspection will be completed by October 30, 1979*
Category C - Nonredundant system..
Inspection of *normally accessible seismic piping will be completed by August 31, 1979.
The remainder of the system will be inspected by October 30, 1979.
- Normally accessible is defined (for these purposes) as systems that are outside containment in radiation fields of less than 100 mr/h and less than 80% of maximum permissible airborne concentration.
The Palisades Nuclear Plant is now scheduled for a refueling outage begin-ning in September 1979*
The October 30, 1979 date will be extended to coincide with the end of the refueling outage, if the outage ends after October 30, 1979
- A-1
B-1 APPENDIX B SYSTEM DRAWINGS, DESCRIPTION AND INSPECTION CATEGORY Fifteen copies of drawings are being provided to facilitate NRC review.
These drawings have the system name and "MEXP" prefix prior to the numerical designa-tion; eg, MEXP-201 shows the safety piping to be inspected for the Primary Coolant System, P&I M-201.
The MEXP series of drawings are being used for evaluation per IE Bulletin 79-02 as well as IE Bulletin 79-14.
Also, the MEXP series drawings denotes 2-inch and under piping as safety-related; however, 2-inch and under piping is excluded from the evaluation being performed for IE Bulletin 79-14.
Drawing M-201 M-202 M-203 and M-204 M-205 M-207 M-208 M-209 M-210 M-211 M-212 M-213 M-214 M-215 M-218 M-219
System Description
Primary Coolant System Chemical Volume Control Safety Injection, Containment Spray Shutdown Cooling Main Steam and Auxiliary Turbine System Feedwater and Condensate System Service Water System Component Cooling Water System Radwaste Treatment System - Clean Radwaste Treatment System - Dirty and Gaseous Service and Instrument Air Circulating Water, Screen Structure Chlorination and Fire System Lube Oil, Fuel Oil and Diesel Generator Plant Heating System HVAC System Sampling System Inspection Category B
A A
A A
A A
c c
c A
A A
A c
Drawing M-220 M-221 M-222 M-224 M-225 M-226 M-650 M-651
System Description
Makeup Water, Domestic Water and Chemical Injection Spent Fuel Pool Coolant and Shield Cooling System Miscellaneous Gas Supply System Gas Analyzing System High-Pressure Air-Operated Valves Steam Generator Blowdown Modification Radwaste Evaporator System - Clean Wastes Radwaste Evaporator System - Miscellaneous Wastes B-2 Inspection Category c
A c
c c
c c
c