ML17276A128
| ML17276A128 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 10/06/1981 |
| From: | Rajender Auluck Office of Nuclear Reactor Regulation |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8110210144 | |
| Download: ML17276A128 (8) | |
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Docket No. 50-397 UNITEDSTATES LEAR REGULATORY COMMISSIO WASHINGTON, D. C. 20555
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MEMORANDUM FOR:
FROM:
SUBJECT:
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A. Sch'wencer, Chief-- ;
Licensing Branchgo..2, DL R-. Auluck, Project Manager Licensi'ng Branch No.',
DL FORTHCOMING MEETING WITH WASHINGTON PUBLIC POWER SUPPLY SYSTEM (WPPSS)
DATE 5 TIME:
.Friday, 0@zdm~, ~
8:30 AM g ~the.~
l 6 i 158'i LOCATION:
PURPOSE:
PARTICIPANTS:
G.
E. Conference Room
- Bethesda, MD
'Discussion 'of the 'Preservice (Agenda Attached)
E NRC Inspection Program k
M. Hum, J. Gleim, J.
Cook (INEL), R. Auluck WPPSS R. Nelson and Support Staff
Attachment:
Agenda cc:
See next page R. Auluck, Project Manager Licensing Branch No.
2 Division of Licensing 8110210144
- 81100bi, PDR ADOCK 05000397 6
Hr. R. L. Ferguson Managing Director Washington Public Power Supply System P. 0.
Box 968 3000 George Washington Way
- Richland, Washington 99352 ccs:
Nicholas Reynolds, Esq..
Debevoise 5 Liberman 1200 Seventeenth
- Street,
.N. M..
Washington, D. C;-
20036 Richard Q. Quigley, Esq.
Washington Public Power Supply System P. 0.
Box 968
- Richland, Mashington 99352 Nicholas Lewis, Chairman Energy Facility Site Evaluation Council 820 East Fifth Avenue Olympis, Washington
- 98504 Mr. Albert D. Toth Resident Inspector/MPPSS-2 NPS c/o U.S. Nuclear Regulatory Commission P. 0.
Box 69
- Richland, Mashington 99352 Roger Nelson, Licensing Manager Washington Public Power Supply System P. 0.
Box 968
- Richland, Mashington 99352 Hr. 0.
K. Earle, Project Licensing Supervisor Burns and Roe, Incorporated 601 Williams Boulevard
- Richland, Washington 99352
AGENDA FOR WASHINGTON NUCLEAR PROJECT NO.
2 MEETING 16 October N, 1981
. 8:30.am to 3:00 pm
Participants:
NRC.-
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~ II R..Auluck, Project Manager, M." R. Hum,"Materials Engineering Branch GTeim,'.Materials Engineeirng Branch NRC Consultant - J.
F..
- Cook, EGKG Idaho 2.
3.
4.
5.
Objectives of Review Overview of Schedule and Status of PSI Examination Sampling Criteria and Exemptions Based on IWB-1220 and IWC-1220.
Reactor Vessel Examination - Procedures, Resul ts, Areas that are Impractical to Examine, and Regulatory Guide 1.150.
=,Piping System. Examination,,Procedures,.Extent of Examination
- Coverage, Prac-tice with One-Side
- Access, Practice with Limitgbions to Examinations, and
-. Res ul ts.
- 6. Relief Requests 7.
Safety Relief Yalve Discharge Line 8.
NRC questions and Discussions
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WNP-2 PRESERVI CE INSPECTION PROGRAM MEETING TOPICS
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1.
For.
some Class.l and 2 welds, the WNP-2 preservice inspection plan utilizes.Edi-tions and'Addenda of the Code that are not approved by 10 CFR 50.55(a).
For those cases where examinations have not been performed in accordance with approved ASME.Code Editions and Addenda, the application must provide a technical justifi-cation for the use of alternative examinations.
2.
WNP-2 states that remote mechanized ultrasonic examination calibration-checks,,
shall be performed at intervals not to exceed 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> instead of at intervals not to exceed 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> as required by Section XI, I-4230.
Confirm that calibra-tion over the intended 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> calibration interval maintains accuracy and sta-bility.-as required by. 1-4230.
3.
WNP-2:states that RHR pump. welds are inaccessible.
Is'this access limitation.
only-for ultrasonic volumetric examination, or are other examination methods limited also..
4.
WNP-2 states that no ultrasonic examination on Class 2 piping welds (circumfer-ential and longitudinal) with piping walls 4 inch or less will be performed.
This action is not provided for in the 10 CFR 50.55a approved ASflE Code,Section XI, 1974 Edition, Summer 1975 Addenda.
The later 1977 Edition up to and including the Summer 1978 Addenda does allow exempting Class 2 piping with walls 4 inch or less; however, portions of approved editions or addenda may be used provided that all related requirements of the respective editions or addenda are met.
The pre-service and inservice inspection program plan shouldbe modified wherever later 10 CFR 50.55a approved Code editions and addenda are involved to specifically i den tify the edi tion and addenda.
5.
WNP-2 states that no ultrasonic examinations will be performed on Class 1 piping welds less than 4-inch nominal pipe size.
10 CFR 50.55a has approved the use of the Section XI, 1974 Edition up to and including the Suomer 1975 Addenda, IWB-1220(b)(1) which states:
"Under the postulated conditions of loss of coolant from the component during normal reactor operation, the reactor can be shut down and cooled down in an orderly manner assuming makeup is provided by the reactor coolant makeup system only.
However, in no instance may the size exemp-tion be more than 3 in. nominal pipe size."-
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-. -"A'dditionally, normal makeup systems are those systems
.that'have the capability to
--.:,maintain reactor coolant inventory under the respective conditions of startup, hot
'-"" standby, operation or cooldown, using onsite power;-
"" The'-term'onsite power is that
-.paver available-'to the nuclear plant from onsite without any power being supplied from'-'an offsite power distribution System.
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-The.-,following information concerning piping size exclusions should be provided:
y
. (a)
Confirm your calculations for liquid and gaseous fluid piping for which Paragraph IMB-1220(b) (1) exemption is invoked.
(b).List the systems and line sizes that were exempted from preservice exami-nation based on Paragraph IWB-2220(b)(1) of the 1974 Edition including
- ". "Suomer 1975 Addenda,Section XI based on normal makeup systems using only
. --onsite power.
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6; The."WHP-2 preservice inspection program plan does. not discuss.
or-define as inspec-
-table 'systems, the control rod drive cooling water lines common charging and dis-
..charging headers, and the control rod insert/withdrawal lines.
Identify the ASME Code classification of each of these piping systems and discuss the technical basis for your preservice exarhination requirements.
Those piping system lines that are exempted by IWB-1220(b) and which are parallel pathed into'a comon header that is larger in size than allowable by IWB-1220(b) should be identified and the comon header lines shall be included in the PSI examination program.
I 7.
WHP-2 has included in the PSI Program, Table 5.2-12, Items B.4.1 and B.4.5, "Exami-nation Area" as follows:
"Safe end-to-piping welds, safe-ends in branch piping welds circumferen-tial and longitudinal welds to include base metal for a distance of > T or I inch, whichever is smaller."
The 1974 Edition of Section XI including. addenda through Suamer 1975 cited as the Code being used by MHP-2 requires that base metal examination area include, at
- least, one-wall thickness beyond the edge of weld.
Discuss the technical basis for your decision for selecting the examination area.
8.
In Table 5.2-12, Item B-l.4, it is stated that primary nozzle-to-vessel welds and nozzle inner raduis components will be examined from the outside surface.
Confirm that existing procedures and equipment have been qualified on calibration mockups/
standards that enable fatigue cracks to be reliably detected, identified, and characterized.
9.
MNP-2 has invoked examination criteria sizing of 2 inches and smaller for category B-G-2 and larger than 2 inches for category B-G-1 as allowed by the 1978 Addenda to the 1977 Edition of the ASME Code,Section XI.
Confirm that all related exami-oation requirements of the 1978 Addenda to the 1977 Edition are being met.
10.
MNP-2 states in the PSI Program Plan sampling limitations as follows:
.a.
For Item B6.4, Category B-K-l, "Integrally Welded Supports" and Item 86.5, Category B-K-2, "Support Components" of Table 5.2-12, only valves in Cate-gory B-M-1 will be examined.
It is not the intent'of Category B-K-1 and Category B-K-2 to be limited to 'the sampling<OX.. Category B-M-1 of. ASME Code,Section XI.
b.
For Item B5.4, Category B-K-1, "Integrally Welded Supports" and Item 85.5, Category B-K-2, "Support Components" of Table 5.2-,.12, only pumps in Category 8-L-1 will be examined.
It is not the intent of Category B-K-1 and Category B-K-2 to be limited to the sampling of Category B-L-1 of ASME Code,Section XI.
c.
For. Item B5.9, Category B-G-2, "Pressure Retaining Bolting 2 Inches and Smaller in Diameter" and Item B6.2, Category B-G-l, "Pressure Retaining Bolts and Studs Greater'than 2 Inch Diameter" of Table 5.2-12 only pumps
-in Category B-L-1 and valves in Category B-M-1 will be examined.
It is not the intent of Category B-G-'2 and Category B-G-1 to be limited to the sampling of Category B-L-1 and Category B-M-1 respectively of the ASME Code,Section XI.
Confirm that all required examinations of. the above categories will be performed as part of the PSI Program.
Docket File(s)
NRC PDR Local PDR Branch Reading File HSIC TERA TIC E.
G.
Case D. G. Eisenhut/R.
P N. Hughes T. Novak S. Varga T. Ippolito.
R. A. Clark J.
F. Stolz (ORB;-"4)
R. Tedesco B. J.
Youngblood A. Schwencer F. Miraglia E. Adensam (LB-..4)
J.
R. Miller G. Lainas D. M. Crutchfield B. T. Russell J. Olshinski H. Vollmer R. J. Mattson S.
H. Hanauer T. Murley J.
P. Knight ti. Johnston (AD/Mat D. R. t/uller P. S.
Check M. E. Kreger L. S.
Rubenstein F. Schroeder th: L. Ernst ACRS (16)
OI&E 3)
OSD (7)
Ati;orney, OELD
- LeDoux, I&E.
Y. t'ioore B. Grimes urple erials
& (}ualif. Engr)
I&E Region I I&E Region II I&E Region III
'I&E Region IV.
I&E Region V
NRC Partici ants:
bcc:
Applicant Service List Branch Licensing Branch No.
2 g6jject i<anger R. Auluck Licensing Assistant M
Service