ML19210C733
| ML19210C733 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 10/10/1979 |
| From: | Rachel Johnson PORTLAND GENERAL ELECTRIC CO. |
| To: | Mccollum K, Mark Miller, Paxtan H AFFILIATION NOT ASSIGNED, Atomic Safety and Licensing Board Panel, OKLAHOMA STATE UNIV., STILLWATER, OK |
| References | |
| NUDOCS 7911200017 | |
| Download: ML19210C733 (4) | |
Text
1 050-3 M C MTJC DOCmgyp g James W. Ournam m
-s Vice President and GeneralCcunsel
. Sit!Er.Ci GSr.rcl ESCUiC CCITTE!Tf
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g= ] LegalDepartment Warren Hastings Assoc: ate Corporate Counsel Corporate Attcrneys:
AMn Alexancerson Roland A. Jchnson October 10, 1979 Ronald W. Jchnson Dallas A. Marckx
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Marshall E. Miller, Esq., Chairman f
Atomic Safety and Licensing Board g
g 12} #gfg U. S. Nuclear Regulatory Commission
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- , [y Washington, D. C.
20555 4
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Dr. Kenneth A. McCollom, Dean g
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Division of Engineering,
\\g Architecture.& Technology V
Oklahoma State University y
y Stillwater, Oklahoma 74074 m
Dr. Hugh C. Paxton 1229-41st Street Los Alamns, New M.szico 67544 Gentlemen:
Attached to this letter is a Iist of Requests for Design Changes (RDCs) associated with the nodification program described in the Report on Design Modifications for the Trojan Control Building (PGE-1020). These items are modifications involving piping supports necessary to qualify piping systems for response spectra developed in accordance with PGE-1020, Appendix B.
The items on this list will not individually or collectively with other modifications reduce the shear capacity of any major shear wall by greater than 1 percent. Nor do the items involve weight additions which may result in an increase of greater than 1 percent of the calca-laced lateral forces in any major shear wall.
In addition, further design development of a =odification described on the attachment to my letter of August '3,1979 will modify the description of that item. The strut assembly being added as Job 51 of RDC 79-028 vill be attached to a concrete wall rather than to existing steel and a block wall. Job 51 is located below Elevation 45 ft and therefore will not significantly affect shear capacity of walls above Elevation 45 ft.
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79112000 9 1300 WillametteCenter
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Fcnfr.nd Ger.erzi Esc =.c g/
o Messrs. Miller, McCollom and Paxton October 10, 1979 Page two The Licenses will continua to keep the Board informed of activities at Trojan as described at the March 30, 1979 Prehearing Conference (Tr. 3204-05).
Sincerely, to.
/'
Ronald W. Johnson Corporate Attorney Portland General Electric Company RWJ/4kk66.27B10 Attachment c:
R. H. Engelken Nuclear Regulatory Commission Region V 1
A. Schwencer Nuclear Regulatory Coc: mission 371 252
ATTACHMENT Following is the list of Request for Design Change (RDC) work items for which field work my be performed within the next few weeks.
The relationship of the work with the Control, Auxiliary and Fuel Building structures is briefly summrized below:
ROC No.
Modifica tion Relationshio 79-028 Job No. ?l: Modifica tion The existing restraint attach-of existing restraint for ment will be relocated for the component coolir.g water strut assembly for the 14 in.
piping, HBD-27-1 (SR 227).
piping at elevation 56 ft in the Auxiliary Building. The strut will be attached to the spent fuel pool wall (shear wall) with three new 1 in. dia-meter anchors. Weight added will be about 40 lbs. The modification will not have a significant affect on the shear wall capacity.
Job No. 37: Addition of a A snubber assembly will be snuceer assembly for added for the 4 in. piping at chemical and volume control elevation 88 ft in the Fuel system piping, HCC-23-2 Building. Supped steel will 1
(SS 300).
be attached to the floor slab above.
Job No. 39: Modifica tion A support brace will be added of existing restraint on for the existing strut assembly service water system for the 30 in. pipe at eleva-piping, HFD-1-1 (SR 216).
tion 51 ft in the Fuel Building. The new brace will be attached to the slab on grade at elevation 45 ft.
Job No. 48: Modification Stiffeners and a base plate of existing restraint on extension will be added to the spent fuel pool piping, existing support steel for the SI-151R-10-7 (SR 5).
strut on the 4 in. piping at elevation 46 ft in the Auxil-f ary Building. The base plate extension will be attached to the slab at elevation 45 ft.
Job No. 52: Addition of A double strut assembly for couole strut assembly for the 3 in, piping at elevation safety injection systen 65 ft in the Auxiliary Building piping, SI-1501R-1-1 will be added. Support steel (SR 302).
for the restraint will be anchored to the slab at eleva-tion 63 ft.
1371 253
ROC No.
Modifica tion Relationship 79-028 Job No. 56: Addition of A snubber assembly will be added a snuccer assembly for for the 4 in. pipe at elevation reactor coolant pumo seal 63 ft in the Fuel Building.
water piping, CS-151R-6-1 Support steel for the snubber (SS300).
will be attached to the floor slab at elevation 61 ft.
Job No. 59: Addition of A snubber assembly will be a snubcer assembly for adde <j for the 4 in. piping at reactor coolant pumo seal elevation 66 ft in the Auxi-water piping, CS-151R-6-3 liary Building. The snubber (SS 300).
will be attached to a 27 in.
minor shear wall with four S/8 in. anchors. Total weight added will be about 25 lbs.
The modification will not have a significant affect on the shear wall capacity.
Job No. 60: Addition of A snubber with support steel a snuceer assembly for will be added for the 4 in.
reactor coolant pump seal pipe at elevation 68 ft in water piping, CS-151R-6-3 the Auxiliary Building. The (SS301).
support steel will be attached to existing structural floor support steel.
Job No. 69: Addition of a A strut assembly and support strut assembly for primary steel will be added for the nakeup water piping, 3 in. piping at elevation 55 ft RC-151R-19-1 (SR 300).
in the Auxiliary Building.
Support steel will be attached to structural floor support steel and to the spent fuel pool wall with four 5/8 in.
drilled anchors. Total weight added will be about 150 lbs.
The modification will not have a significant affect on the shea r wall capacity.
Job No. 70: Addition of a A snubber assembly will be snuccer assembly for pri-added for the 3 in. pipe at
- rary makeup water piping, elevaticn 58 ft in the Auxi-RC-151R-19-1 (SS 301).
11ary Su lding. The assemoly e
will be attached to the support steel for Job No. 69, which in turn, is attached to the spent fuel pool wall. Total weignt added will be about a0 lbs.
The modification aill not have a significant affect on the shear wall capacity.
191 254
RDC No.
Modifica tion Relationshio 79-028 Job No. 73: Addition of a A strut assembly will be added strut assembly for Contain-for the 4 in. piping at eleva-ment vent monitoring system tion 102 ft in the Auxiliary piping, HSD-91-4 (SR 301).
Building. The strut will be attached to a 24 in. minor shear wall with four 1/2 in.
diameter anchors. Total weight added will be about 35 lbs.
The modification does not haver a significant affect on the shear wall capacity.
Job No. 75: Addition of a A steel restaint will be added restraint for chemical and for the 3 in. piping at eleva-volume control system tion 80 ft in the Auxiliary piping, HCC-29-3 (SR 300).
Building. The base plate for the restraint will be attached to a 44 in. thick minor shear wall with four new 3/4 in.
diameter drilled anchors.
Total weight added will be about 25 lbs. The modifica-tion will not have a signifi-cant affect on the shear wall ca pacity.
Job No. 77: Addition of A strut assembly with support strut assembly for spent steel will be added for the fuel pool cooling system 10 in. piping at elevation piping, HCC 48-1 (SR 302).
66 ft in the Auxiliary Building. The support steel is attached to structural floor support steel.
Job No. 78:
Addition of A double strut assembly will strut assembly for spent be cdded for the 10 in.
fuel pool piping, HCC-48-1 piping at elevation 68 ft (SR 303).
in the Auxiliary Bulding.
The struts will be attached to the spent fuel pool vall with four 5/8 in. drilled anchors each. Total weight added by the modification will be less than 150 lbs.
The modification will not have a significant affect on the shear wall capacity.
1371 255
ROC No.
Modifica tion Relationshio 79-028 Job No. 89: Addition of a A steel restraint will be added restraint for reactor cool-for the 4 in. piping at eleva-ant pump seal water piping, tion 68 ft in the Auxiliary CS-151R-6-3 (SR 304).
Building. Support steel will be attached to a 30 in. thick minor shear wall with four 5/8 in. diameter drilled anchors. Total weight added will be about 50 lbs. The modification will not have a significant affect on the shear wall capacity.
Job No. 98: Modifica tion The existing stanchion restraint of an existing restraint will be replaced with a steel for chemical and volume support frame for the 4 in, control system piping, piping at elevction 86 ft in CS-151R-12-3 (SR 110).
the Fuel Building. The support steel will be attached to the 33 in. thick concrete holdup tank enclosure wall (shear wall) with six new 3/4 in. diameter drilled anchors. Total weight added will be about 130 lbs.
The modification will not have a significant affect on the shea r wa ll ca pa city.
1371 256
UNITED STATES OF AMERICA NUcTFAR REGULATORY COMMISSION BEFORE THE ATOMIC SAFETY AND LICENSING BOARD In the Matter of
)
)
Docket 50-344 PORTLAND GENERAL ELECTRIC CCMPANY, )
et al
)
(Control Building Proceeding)
)
/ Trojan Nuclear Plant)
)
CERTIFICATE OF SERVICE I hereby certify that on October 10, 1979, Licensee's letter, dated October 10, 1979 with a list of Requests for Design Changes, has been served upon the persons listed below by depositing copies thereof in the United States mail with proper postage affixed for first class
= ail.
Marshall E. Miller, Esq., Chair =an Joseph R. Gray,' Esq.
Atomic Safety and Licensing Board Counsel for NRC Staff U. S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Washington, D. C.
20555 Dr. Kenneth A. McCollom, Dean Lowenstein, Newman, Reis, Axelrad &
Division of Engineering, Toll Architecture and Technology 1025 Connecticut Avenue, N. W.
Oklahoua State University Suite 1214 Stillwater, Oklahoma 74074 Washington, D. C.
20036 Dr. Hugh C. Paxton Frank W. Ostrander, Jr., Esq.
1229 - 41st Street Assistant Attorney General Los Alamos, New Mexico 87544 State of Oregon Department of Justice Atomic Safety and Licensing Board 500 Pacific Building Panel 520 S. W. Tambf 11 U. S. Nuclear Regulatory Commission Portland, Oregon 97204 Washington, D. C.
20$55 Wf114am Kinsey, Esq.
Atomic Safety and Licensing Appeal Bonneville Power Administration Panel P. O. Box 3621 U. S. Nuclear Regulatory Commission Portland, Oregon 97208 Washington, D. C.
20555 Docketing and Service Section Office of the Secretary U. S. Nuclear Regulatory Commission Washington, D. C.
20555 137) 257
CERTIFICATE OF SERVICE Ms. Nina Bell Mr. Eugene Rosolie 728 S. E. 26th Avenue Coalition for Safe Power Portland, Oregon 97214 215 S. E. 9th Avenue Portland, Oregon 97214 Mr. John A. Kullberg Route l' Box 250Q Columbia County Courthouse Sauvie I*1 =nd, Oregon 97231 Law Library Circuit Court Room Mr. David B. McCoy St. Helens, Oregon 97051 348 Hussey Lane Grants Pass, Oregon 97526 Ms. C. Gail Parson P. O. Box 2992 Kodiak, Alaska 99615 Ronald '4.
Jo on Corporate Ac orney Portland General Electric Company Dated: October 10, 1979 1371 258
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