ML19210C168
| ML19210C168 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 09/28/1979 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 7911130381 | |
| Download: ML19210C168 (6) | |
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,,0, UNITED STATES
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i NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D. C. 20555
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SEP 2 81973
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Y Docket No. 50-344
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Mr. Charles Goodwin, Jr.
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Assistant Vice President Portland General Electric Company
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121 S.W. Salmon Street N
Portland, Oregon 97204
Dear Mr. Goodwin:
In conducting our review of PGE-1020, " Report on Design Y.odifications for the Trojan Control Building," as supplemented and amer.ded, we have deter-mined that we will need the additional infomation identified in the enclosure to continue our review. Further questions will be for.h:oming the week of October 1 at which time we will be requesting a meeting with you to dis-cuss all outstanding questions and concerns. This meeting shcald be scheduled at the earliest time at which you will be prepared to fully discuss the matters addressed in our questions.
Y ur response is requested as soon as possible. Three signed originals and forty croies are required.
Please contact us if you have any questions concerning this request.
Si ncerely, h
A. Schwencer, Chief (Y
Operating Reac ors Branch #1 Division of Operating F.eactors Encl osure:
Request for Additional Information cc: w/ encl osure See next page 1321 188
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Mr. Charles Goodwin, Jr.
Por:1 and Gereral Electric Company bEPTEUSER 2 8 1979 cc: Mr. H. H. Phillips Mr. John A. Kullberg Portland General Electric Company Route One 121 S.W. Salmon Street.
Box 2500 Portland, Oregon 97204 Sauvfe Island, Oregon 97231 Warren Hastings, Esquire Ms. Nina Bell
' Counsel for Portland General 728 S.E. 25th Street Electric Company Portland, Oregon 97214 121 S.W. Salmon Street Portland, Oregon 97204 Mr. Stephen M. Willingham 55! N. Tomahawk Drive Mr. Jack W. l.entsch, Manager Porti and, Oregon 97217 Generation Licensing and Analysis Portland Gener'l Electric Company Mr. Eugene Rosolie 121 S.W. Salmon Street Coalition for Safe Power Portland, Oregon 97204' 215 S.E. 9th Avenue Portland, Oregon 97214 Columbia County Courthouse Law Library, Circuit Court Room Richard M. Sandvik, Esquire St. Helens, Oregon 97501 Frank W. Ostrander, Jr.
Counsel for Oregon Dept. of Director, Oregon Department of Energy-Energy i
Labor _ and Industries Building, Room 111 500 Pacific Building Salem, Oregon 97310 520 S.W. Yamhill Portland, Oregon 97204 Or. Hugh D. Paxton 1220 41st. Street Maurice Axel rad, Esquire Los Alamos, New Mexico 87544 Lowenstein, Newman, Reis, Axelrad and Toll Michael Malmrose Suite 1214 U. S. Nuclear Regulatory Commission 1025 Connecticut Avenue, N.W.
Trojan Nuciear P1 ant Washington, D. C.
20036 P. O. Box 0 Rainier, Oregen 97048 Mr. David B. McCoy 348 Hussey Lane Dr. Kenneth A. McCollan, Dean Grants Pass, Oregon 97525 Division of Engineering, Architecture and Technology Ms. C. Gail Parson Oklahoma State University 800 S.W. Green #6 Stillwater, Oklanoma 74074 gg, Portland, Oregon 97526 f
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". :harl es todwin, Jr.
F Or-I and Ge.eral Elec:ric CocPany 2-dEPTEcSER 2 8 1979 c:: P. H. 9.. Phil'. i:s Mr. John A. Kullberg P ?rtlard General Electric Ccm a.9y Route One 121 S.'i.
Salmer. Street Box 250Q P:rtl a-d, Ores:n 97204 Sauvfe Island, Oregen 97231
'4arren Hastings, Esquire.
Ms. Nina Bell Counsei for Port;and General 728 S.E. 26th Street El ec--f : Cem;ary Portland, Oregon 97214 121 S.k. Salmon Street
. :rt' ard, Cres:n 972C4 M.
Stephen M. Willingham
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555 N. Tomahawk Drive M. Jac< 4. Lertsch, Manager P:rtiand, Oregon 97217 Senera-ica Licansing and Analys's P:rtl ard 3eneral Electric Com:any Mr. Eugene Rosolie 121 S.k. Salcor. Street Coalition for Safe Power P:rt~. ard, Oregen 97204 215 S.E. 9th Avenue Portland, Oregon 97214 C:iumbia ::unty C:urthouse Law Lit ary, Circuit Court Roca Richard M. Sandvik, Esquire 5:. Meier s, Cregen 97501 Frank W. Ostrander, Jr.
Counsel for Oregon Dept. Of 3 rec:c, Cregen Depar ment of Energy Energy I
Labor ec Industries Building, Room 111 500 Pacific Building Saler, 2regon 97310 520 S.W. Mmhill Portland, Oregon 97204
- . i-ug: 2. Paxten 1220 4120. S:ree:
Maurice Axel ad, Esquire
'.:s Ala es, New Mexico 87544 Lewenstein, Neman, Reis, Axel rad and Toll M'enael M.al. arose Suite 1214 J. S. h.c ear F.egulatory Commission 1025 Connecticut Avenue, N.W.
Tr:jan 'iu:1 ear 21 ant Washington, D. C.
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O. 5:x 0 Rainier, Oregon ?7048 Mr. David B. McCoy 348 Hussey Lane Jr. Kenneth A. McCollor:, Dean Grants Pass, Oregon 97526 Jf visic Of Engineering, Archi e.: tare and Technology Ms. C. Gail Parson Oki ahora Itate 'Jr.iversity 800 S.W. Green !S S.iliwa:a, Oklah::a 74074 Portland, Oregon 97526 1321 i?0 D [>bJu WM ll ]1/jk
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eor.1 ar.d General Electric Coc:pany.
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cc: William Kinsey, Esquire Dr. W. Reed Johnson 1032 h.E. Holladay Atomic Safety and Licensing Appea 2:rtland, Oregen ~ 97232 Board U. S. Nuclear Regulatory Commiss-Rcnald 'm*. Johnson, Esquire Washington, D. C.
20555 Ccrporate Attorney 3:rtland General Electric Company 121 S.W. Salmer. Street 3crtland, Oregen 97204 Mr. 0:nald W. Godard, Superviser Sitin; and Regulation Orege:: Department of Energy
'. abor a.md Industries auilding, Room lli Salem, Oregon 97310 3.:c er: M. Hunt, Chaiman 3:ard cf Cour.:y Commissioners C:1untia County 3:. Helecs, Cregen 97051 Marshall E. Miller, Escuire, Chaiman A:cci: Safety and Licensihg Board U. S. N clear Regulatory Commission Washi g en, D. C.
20555 A:cmi: Safety and Licer. sing Board Panel (5)
- 2. S. haclear Fegulatory Commission Washi g ca, C. C.
20555 3::ke:1.; anc Service Section (4) 0# fica of the Secretary U. S. Nac1 ear Regulator 3 Commission Washing cn, D. C.
20555 A'.an 5. Rosenthal, Esquire A:cci: Safety and Licensing Ap;eal Board U. S. Nuclear Regulatory Commission Washington, D. C.
20555 0. J:hn H. Buck A:or.i: Safety and Licensing A;;eal Board
'.. S. '.;cl ear aguta: cry Commi ssion ism ;;:n, D. C.
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- %q REOUEST FOR ADDITIONAL INFORMA 1DPog TROJAN CONTROL BUILDING MODIFIC*TIONS Verify that the installed Hexcel energy absorbing material will be 1.
" stabilized" in order to ensure the edge material is stabilized and a) therefore will absorb the anticipated amount of energy should it be
. crushed by a falling plate.
b)
"precrushed" i~n order to eliminate the peak load shown in Figure V-2 cf Hexcel catalog !T53-120 1.
? evious respcnses have indicated, in response to t. e control of dust, grit anc cebris.: hat the work area may be isolated.
In this regard, the staff believes a small' portable enclosure should be empicyed on the east and west insice walls 'of the control. room and the electrical auxiliaries room when This box shall be capable of ccntaining and drilling holes in the walls,.
coilecting any dust, dirt, debris and water that may enter the room as the
~ drill penetrates the wall.
Verify that such a small enclosure and collection means will be provided in c-der to preclude the release of this material inside the rooms.
, firm that the required control rocm differential pressure requirements
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o(Tec.nical Specification 4.7.6.l_.d.3) can be. continuously maintained with open crilled hol'es in the control room Wall.
Provide the basis for your conclusion.
"1sc, confir:i that these requirements can be met durina installation of nlate A.
4 The Trojan response of September 5,1979 to Systems Branch question 10 is confusing in that it speaks of areas external to Category 1 s;.ipment.
The staff believes that a fire watch patrol should be es ablished to perform hourly inspections for areas wher-a fire cc: id affect safety related cables or equipnent in whir. non-fire retardant, wood will be used for concrete forms or other purposes.
The person while assigned as a fire watch patrol should have no ctrer duties.
This fire watch patrol should be instituted when the non-fire retardant wood is taken into any of these areas and cor.:inue until it is removed.
The fire watch patrol would not be r.ecessary during the times when a continuous fire watch has established in an area for other reasons.
Identify each 7'
1rans where such a fire watch patrol wculd be necessarv
.onitor f:- fires in areas where a fire could affect safety-r ~
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I OCT 1gs79
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5.
In reference to the constrxtion noise levels in the control room, response la to the s aff's July 20, 1979 questions, you indicated that "Should it be dete nined by the ;1 ant operator in the Control P,oca that excessive noise is being created, lighter weight tools or other tear.s of concrete removal The staff believes it is essential that if either the will be edployed".
NRC IE resident inspector or the plant operator should deter ine that excessive constructica ncise is being created, lighter weicht tools or other means of concrete removal will be employed.
Verify that the above addi1!ional control on eqntrol room noise is acceptable and will be ecmplied with.
i.
Presently it is prcpesed to utilize a positive fee control drill on the east and west cont ol building outer walls.
Furtbar a person will be stationed en the inside for the purpose of detecting when the wall has been penetrated and notifying the driller via radio conrrc nications or by sound or battery powered telephones.
Jescribe and discuss any other additional
,. measures that can.and will be implemented to further provide assurance the drill will act be allowdd to penetrate to such an extent as to damage acuicment within, e.g., pcsitive stops or a paint strip on the core drill to alert the driller that wall penetration is imminant.
7.
In referen:e to ycur September 5,1979 Structural Branch response nucber 4, it appears that a considerable amount of concrete is to be remcved frc: the electrical auxiliaries room floor along colum1 line N in Order to properly attach the added wall in the Control Building railroad bay to the existing structure.
Wi?h the aid of drawin;s, fully describe and discuss the following; a) The ecuipment that will be employed to remove tne existiag c:ncre e shown in Figure 4-1.
b) The ec.:ipment tc be employed in drilling the 1-inch holes in the existing 12 inch thick precast floor slabs.
c) The specific equipment that wi.ll be employed to preclude the spreading of dust, grit and debris generated during the ab:ve work, e.g., water sprays, evacuation fans, periccic clean ups and/or isolation of the work area by temporary barriers.
d)
Indicate the location and describe the safety-related functions a.f all alectrical auxiliaries roem equipment located within the area of influence of const uction-generated vibratory tice, otter, cust, grit and webris,
e) he reas:n why.)ou c:nclude that the constructier. >:tivities bei.; :1-ried cut in this roca will not impair the Operability Of ne ermar.an plant ecuipment located in ::.e electrical auxilia-ies re:-.
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