ML17193B407

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Forwards Table of Structures,Sys & Components Requiring Classification W/Respect to Quality Group & Const Code Stds. Response Requested within 30 Days
ML17193B407
Person / Time
Site: Dresden Constellation icon.png
Issue date: 05/15/1981
From: Crutchfield D
Office of Nuclear Reactor Regulation
To: Abel J
COMMONWEALTH EDISON CO.
References
TASK-03-01, TASK-3-1, TASK-RR LSO5-81-05-030, LSO5-81-5-30, NUDOCS 8105260463
Download: ML17193B407 (19)
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Text

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  • ~

Docket No. 50-237 LS05*8l-05-030 Mr. J.s. Abel Director of Nuclear Licensing Coliinonwealth Edison Con¢>any Post Office Box 767

~

Chicago, Illinois 60690

Dear Mr. Abel:

SUBJECT:

CLASSIFICATION OF STRUCTURES, SYSTEMS AND COMPONENTS, SEP TOPIC 111-1 (DRESDEN 2)

Enclosed is a table of structures, systems and components for which classifi-cation with respect to quality group and construction code standards is requir-ed. Seismic classification is being addressed as part of the overall seismic design reevaluation. Electrical power distribution systems and instrumentation such.as sensors and actuation d~vices are not addressed here for quality group, but will be considered for seismic adequacy.

You are requested to complete the f<;>llowing table and verify whether the data alreaqy entered is* correct. Furthermore, we request the following information:

1) For all systems and components supply the classification being used for Section XI testing.
2)

Provide any supplemental quality assurance which was performed during con-struction such as testing, non-destructive examination, material trace-ability, etc. which would assist us in our review.

Your response is requested in 30 days.

Enclosure:

As stated cc w/enclosure:

See next page Sincerely, Dennis M. Crutchfield, Chief Op'erat i ng Reactors Branch #5 Division of Licensing I

f'

. *:/:.

NRCFORM3181Hl/801NRCM>2<10 OFFICIAL RECORD COPY

  • 'USGP0:1980-329*824

)o UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 Docket No. 50-237 LS05-81-05-030 Mr. J.s. Abel Director of Nuclear Licensing Conmonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690

Dear Mr. Abel:

May 15, 1981

SUBJECT:

CLASSIFICATION OF STRUCTURES, SYSTEMS AND COMPONENTS, SEP TOPIC III-1 (DRESDEN 2)

Enclosed is a table of structures, systems and components for which classifi-cation with respect to quality group and construction code standards is requir-ed.

Seismic classification is being addressed as part of the overall seismic design reevaluation. Electrical power distribution systems and instrumentation such as sensors and actuation devices are not addressed here for quality group, but will be considered for seismic adequacy.

You are requested to complete the following table and verify whether the data

  • already entered is correct. Furthermore, we request the following information:
1) For all systems and components supply the classification being used for Section XI testing.
2)

Provide any supp*lemental quality assurance which was_performed during con-struction such as testing, non-destructive examination, material trace-ability, etc. which would assist us in our review.

Your response is requested in 30 days.

Enclosure:

As stated cc w/ericlosure:

See next page Si nee rely,

  • L41.,4__,,ht/ ~1 Dennis M. Crute~~

Operating Reactors Branch #5 Pivision of Licensing

Mr. J. S.,Abel cc Isham, Lincoln & Beale Counselors at Law One First National Plaza, 42nd Floor Chicago, Illinois 60603 Mr. B. B. Stephenson Plant Superintendent Dresden Nuclear Power Station Rura 1 Route #1 Morris, Illinois 60450 Natural Resources Defense Counci 1 917 15th Street~ N. w.

Washington, D. c.

20005

u. S. Nuclear Regulatory Commission Resident Inspectors Office Dresden Station RR #1 Morris, Illinois 60450 Susan N; Sekuler Assistant Attorney General Environmental Control Division 188 w. Randolph Street' Suite* 2315 Chicago, Illinois 60601 Morris Public Library 604 Liberty Street Morris, Illinois 60451 Chairman Board of Supervisors of Grundy County Grundy County Courthouse Morris, Illinois 60450 John F. Wolfe, Esquire 3409 Shepherd Street Chevy Chase, Maryland 20015 Dr. Linda w. Little 500 Hermitage Drive Raleigh, North Carolina 27612 Illinois Department of Nuclear Safety 1035 Outer Park Drive, 5th Floor Springfield, Illinois 62704 Director, Standards and Criteria Division Office of Radiation Programs (ANR-460}

U. S. En vi ronmenta 1 Protection Agency Washington, o. c.

20460

u. s. Environmental Protection Agency Federal Activities Branch Region V Office ATTN:

EIS COORDINATOR 230 South Dearborn Street Chicago, Illinois 60604 Or. Forrest J. Remick 305 East Hamilton Avenue State College, Pennsylvania 16801

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TABLE OF CONTENTS TITLE Structures................ *......... ~J ** * ******.****************

Reactor Coolant System **************************************

Recirculation System ****************************************

Emergency Systems Isolation Condenser *************************************

Standby Liquid Control System ***************************

Core Spray System **.*..*********************************

Low Pressure Coolant Injection/

Containment Coolant-Subsystem *************************

High Pressure Coolant Injection *************************

Standby Coolant Supply System ***************************

Automatic Pressure Relief Subsystem *********************

Standby Gas Treatment System ********************************

Safety Valves ***********************************************

Relief Valves ***********************************************

Containment Penetrations ************************************

Reactor Coolant Pressure Boundary ***************************

Isolation Valves ****************** ~ *************************

Control Rods ************************************************

Control Rod Drive Housing ********************************** ~

Control Rod Drive Housing Supports.~ ************************

Control Rod Drive Hou~ing System ****** ~ *********************

Spent Fuel Storage Facilities.~ *****************************

Turbine Sto~ Valves~.~*******************~~*****************

Reactor Vessel Head Cooling System *************** ~**********

Condensate/Feedwater System ***************** *-~ **************

Main Steam System *******************************************

Condensate Storage* Tank ************************.*************

Reactor Water Cleanup System ***************** ~~*************

Reactor Shutdown Cooling System *****************************

Reactor Building Closed Cooling Water System **********************************************

CorqJressed Air System ***************************************

Standby Diesel Generator ************************************

Service Water System *****************.******* ~ **************

.Standby Electric Po\\'1er System ************* -******************

Instrumentation and Controls ******************************** PAGE 1

2 3

3 4

4 5

6 6

7 7

7 7

7 7

8 8

8 8

8 9

10 10 10 11 11 11 12 12 12 13 13 14 14

Control room Stack Turb1ne building R.G. l.26 SRP.3.2.2 ASME III MC DRESDEN UNIT 2 Qua l tty Grau p Plant DesJ.9!!.

ASME II I Class B (f,SAR Sec. 12. 1. 1. 3

.and Table 5.2.1)

Section XI Classification Seismic Classification R.G. 1.29 Plant SRP 3.2.1

' Design Seismic Category I (R.G. l.29,

c. l.o)

Seism1c Category I (R.G. 1.29, C.l.g, C.l.o)

Seismic Category I (R.G. 1.29, C. 1. n)

Non seismic Non seismic Category I (OBE)

Class I 1 (FSAR Sec. 12. l. l

  • 2 )

Class I (FSAR Sec. 12. l. l. 2)

Class Class I Class II 2

  • (FSAR Sec. 12. l. l. 2) l of 111 Remarks Standby gas treat-ment system is non-sei smic Category I

( SRP 11. 3)

  • No requireinent that stack be seismic qualified I

I

~

I I

  • I I

I I

....... ----~.---**~*--*-

  • ~-* **~---._..._.,......-~

--~~***

  • Components/Subsystems Radioactive waste building Intake and discharge (crib house)

Reactor Coolant Slstem Reactor vessel Reactor vessel supports Reactor vessel internals R.G. 1.26 SRP 3.2.2 ASME Sec.

Class l ASME Sec.

Cl ass l I II II I

\\

Qua 1 ity Group Plant Design ASME Sec.

Class A III DRESDEN UNIT 2 Section XI Classification (FSAR Table 4.1.1)

ASME Sec. I II Class A Seismic Classification R.G. 1.29 Plant SRP 3. 2. 1 Design Non seismic Category I (OBE), (BTP ETSB 11-1, Sec. V, Rev. l )

  • Seismic Category I (R.G. 1.29, C. l. g)

Seismic Category I (R.G. 1.29, Sec. C. l.a)

Seismic Category Seismic Category Cl ass II (FSAR Sec. 12. l. l. 2)

Class II (FSAR Sec. 12. l. l. 2)

Class I

( F°SAR Sec. 12. l. l. 2)

Class I (FSAR Sec. 12. l. l. 2)

Class I (FSAR Sec. l 2. l. l. 3) 2 of 14 Remarks.

Ul timat1! !teat sink should be seismic Category All reactor vessel internals identified in FSAR, Sec.

12. l. l.2.

t l [9 I

I I

[

I

\\9 i

I f

I I

i i !

.... ---~***~:-***:.::.-:--:-:.:.=..,.~--.--- ---------- ---- -*:-::-::--;;;;:-;;;;;oiiii*i;i* -=* ~. ISll----...

~mz:::;;::;;;::=:P'---11111111011'2-v---

  • Components/Subsystems 3:

Recirculation System Piping Valves Pumps

4.

Emergency Systems Isolation condenser3 Shell side Tube side R.G. 1.26 SRP 3.2.2 ASl-1E Sec. I II Class l ASME Sec. I I I

  • Class l ASME Sec. I II Class l ASME Sec. I I I Class 3 (R.G. l.26, Sec. C.2.b)

ASME Sec. II I Class 2 (R.G. 1.26, Sec. C.1. b)

DRESDEN UNIT 2 Quality Grau p Plant DesJ.9.!!.

ASME Sec. I &

USAS B31.1.O (F.SAR Table 4.1.l and App. B)

ASME Sec. I &

USAS B31.1.0 (FSAR Table 4.1.1, App. B)

ASME Sec. I I I Class C (FSAR Table 4.1.1, and JI.pp. B)

ASME Sec. VIII (FSAR Table 4.1. l)

ASME Sec. I II (FSAR Table 4.1. l)

Section XI Classification Seismic Classification R.G. l.29 Plant SRP 3.2. l Design Seismic Category I (R.G. 1.29, Sec. C.1.a)

Seismic.

Category 1 (R.G. l.29, Sec. C.1.a)

Seismic Category I

( R. G. 1. 29, Sec. C.1.a)

Seismic Category I (R.G. l. 29, Sec. C. l.d)

Seismic Category I (R.G. l. 29, Sec. C.1.d)

Class I (FSAR Sec. 12. l. l. 2)

  • Class I (FSAR Sec. l 2. 1. l. 2)

Class I (FSAR Sec. 12. l. l. 2)

Cl ass I (FSAR Sec. 12.1.l.2)

Class I (FSAR Sec. l 2. l. l. 2 )

r 3 of 14 I

Remarks I. -

~. **- ___......................... ----...-... A*----------..... --..... *="""""--""'-" ---am1:1Stt!l21.lt~*

~*-* -.-; *--- ---* -*

.,._, ___ ----**-* ~,

m"'1 '-.m.l'S:J':.l:l=-------*-1:1;!*

~'.

DRESDEN UNIT 2 5 of l'4 gua l itt Grou ~

Seismic Classification R.G. 1.26 Plant

  • '
  • Section XI R.G. 1.29 Plant ComQQnents[Subs~stems SRP.3.2.2 DesJ.,9!!_

Classification SRP 3.2.l Design Remarks

4.

Emer9enct Ststems Cont~

Spray header. and ASME*Sec. II I ASME Sec. I 11 Seismic Class I sparger's Class 2 Class B Category I (FSAR (R.G. 1.26, (FSAR (R.G. 1.29.

Sec. 12.1.1.2)

I Sec. C. 1.a)

Sec 6.2.3)

Sec. c. l.c)

Low ~ressure coolant injection/containment coolant subststem Pumps ASHE Sec. 111 ASME Sec. 111 Seismic Class I FSAR Class 2 Class B Category I (FSAR Sec. 6.2.4 (R.G. l.26, (FSAR (R.G. l.29.

Sec. 12.1.1.2) specifies Sec. C.1.a)

Sec. 12.1.1.3)

Sec. C.1. c) pump as Class B Piping, fittings ASME Sec. 111 USAS B31.l.0 Seismic Class I and valves Class 2 (FSAR Category I (FSAR (R.G. 1.26, Sec. 12.1.1.3)

(R. G. 1. 29, Sec. 12.1.1.2)

Sec. C. l.a)

Sec. C. l.c)

Containment and ASME Sec. 111 Seismic Class I suppression spray Class 2 Category I (FSAR headers (R.G. 1.26, (R.G. 1.29, Sec. 12.1.1.2)

Sec. C. l. a)

Sec. C. 1.c)

Heat exchangers -

ASME Sec. III ASME Sec. V 111 Seismic Class I tube side Class 2 Class C Category I (FSAR (R.G. 1.26, (FSAR (R.G. 1. 29, Sec. 12.1.1.2)

Sec. C.l.a)

  • Sec. 12.1.1.3)

Sec. C. 1. c) l:teat-:.exchangers. -

ASME Sec. 11 I ASME Sec. I 11 Seismic Class I

  • shell side Class 3..

Class C Category I (FSAR (R.G. l. 26.

(FSAR (R.G. 1.29, Sec. 12.1.1.2)

Sec. C.1. a)

Sec. 1 2. 1. 1. 3)

Sec. C. l.c)

Cont. Coolant Subsystem ASME Sec. II I ASME Sec. III Seismic Class I Class 3 Class C Category

  • .... t4\\.., **
  • ~'9 **

Components/Subsystems

4.

Emergency Systems Cont.

High pressure coolant injection Pumps Piping, fittings and valves Spargers (feedwater spargers used)

Standby coolant supply system Interconnecting-piping and associated valving between the serv.ice water system and the condenser hotwel l

  • R.G. l. 26 SRP 3.2.2 ASME*:Sec. II I Class 2

{R.G. 1.26, Sec. C. l.a)

ASME Sec. I II Class 2

{R.G. i.26, Sec. C. 1. a)

ASME Sec. *I I I Class* 2

{ R. G. l ~ 26, Sec. C. l.a)

Quality Gr.oup D, see remarks Quality Grau p Plant Des.i.9!!.

ASME Sec. I II Class C

{FSAR Sec. 12. l. l. 3)

USAS B31.l (FSAR Sec. l 2. l. l. 3 )

ASME Sec. II I Class A

{FSAR.

Pg. 6.2-31)

DRESDEN UNIT 2 Section XI Classification Seismic Classification R.G. l.29 Plant SRP 3.2.1 Design Seismic Category I

{R.G. 1.29, Sec. C. l.c)

Seismic Category I

( R

  • G
  • l
  • 29,.

Sec. C. l.c)

Seismic Category I

{R. G. l. 29, Sec. C. l. c)

Non-seismic Cate9ory I, (QBE}

Clas~ I (FSAR Sec. 12. l. l. 2)

Class I

{FSAR

_Sec. 12. l. l. 2)

Class I (FSAR Sec. 12. l. l. 2)

Cl qSS l

{fSl\\R Sec. 12. l. l. 2) 6 of 1 :i If credit taken for system in ECCS analysis

( fSAR Sec, 6. 3),

then ASME Sec. I I I, Class 3, classif-ication and seismic Category I applicable I

~

I I

I I l

...,~

DRESDEN UNIT 2 7 of 1'4 gua 1 itl Grau~

Seis~ic Classification R.G. 1.26 Plant Section XI R.G. 1.29 Plant

!9 Com~orients[Subslstems SRP 3.2.2 DesJ..9!!.

Classification SRP 3. 2.1 Design

~emarks Emer9encl Slstems Cont.

Automatic pressure ASME Sec. I II USAS B31.l.O Seismic Class I relief subslstem Class l (FSAR Category I Sec. 12. l. l. 3,

{R;*G'; 1.29, and App. B)

Sec. C. l.c)

5.

Standbl Gas Treatment ASME Sec. II I Seismic Class I No descrip-Slstem Class 2 Category I (FSAR tion of system Sec. 12. l. 1. 2) provided (used for post-accident gas release)

6.

Safetl Valves ASME Sec. I II ASME Sec. II I Sdismic Class I Discharge piping Class 1 USAS B31.l.O Category I (FSAR not evaluated in (FSAR (R.G. 1.29, Sec. 12. 1, 1. 2)

FSAR Sec. 4.1.1)

Sec. C. 1.a)

7.

Relief Valves ASME Sec.; III USAS B31.1.0 Seismic Class I Class 1 (FSAR Category I (FSAR Sec. 4. 1.1)

(R.G. 1.29, Sec. l 2. l. 1. 2) 9' Sec. C. 1. a)

8. Containment Penetrations ASME Sec. II I Seismic Class l valves and pipin9 Class 2 Category I (FSAR Sec. 12. l. l.2)
9.

Reactor Coolant Pressure Boundarl Piping fr.om reactor ASME. Sec. II I USAS B31.l.O Seismic Class I MSIV sealing SYS"'

vessel up to and Class l (FSAR Ap~. B, Category I (FSAR tern and coolant including first Pg. B-*18 (R.G. 1.29, Sec. 12. l

  • 1. 2) sampling system isolation valve Sec. C. l.a) not evaluated in external to containment FSAR l

Components/Subsystems

10.

Isolation Valves (Other than.valves identified under item 8.)

11. Control Rods
12. Control Rod Drive Housing
13. Contra l Rod Drive Housing Supports
14.

Contra l Rod Ori ve

  • System R.G. l. 26 SRP 3.2.2 ASME Sec. I II Class l ASME Sec. III Class l ASME Sec. I II Class 2 (see remarks)

Quality Group Plant DesJ..ll!!.

USAS 831.l.O (FSAR App. 8)

USAS 831.l.0 (FSAR App. 8)

DRESDEN UNIT 2 Section XI Classification 8 of 14

  • seismic Classification R.G. l.29 Plant SRP 3.2.l Design Remarks Seismic Class I Some systems Category I (FSAR have both (R.G. 1.29, Sec. 12. l. l. 2) i sol at ion*

Sec. C. l.a) valves locat-ed outside containment Seismic Class I

  • 1 Category I (FSAR (R.G. 1.29, Sec. 12.l.l.2) l Sec. C. l.m)

Sei smie Class I Category I (FSAR (R~G. l.29; Sec. 12. l. l. 2 )

Sec. C. l.a)

Seismic Class I Category I (FSAR (R.G. l. 29, Sec. 12. l

  • l. 2)

-)

Sec. C.2)

Seismic Class I Only portions of Category I (FSAR CRD sys trn1 piping (R.G. 1.29, Sec. 12. l. l. 2) and valves

. Sec. C. l.m) requ i red for I

control 1*od insertion and I

withdrawill I

Components/Subsystems

15.

Spent Fuel Storage Facilities Spent Fuel Pool Pump Heat exchanger Pi~tng, fittings and valves Filter R.G. l.26 SRP 3.2.2 ASME Sec. II I Class 3 (R. G. l. 26 I Sec. C.2.a)

ASME Sec. II I Class 3 (R.G. l. 26 I Sec. C.2.a)

ASME Sec*: I I I Class 3 (R.G. l. 26 I Sec. C.2.a)

ASME Sec. I II Class 3 (R.G. 1.26, Sec. C.2.a)

ASME Sec. II I Class 3 (R.G. 1.26,

.Sec. C.2.a)

Quality Group Plant Design ASME Sec. VIII (FSAR Sec. 10.2.l)

ASME Sec. II I Class C (FSAR Sec.

  • l O. 2. l )

DRESDEN UNIT 2 Section XI Classification Seismic Classification R.G. l.29 Plant SRP 3.2. l Design Seismic Category I

.(R.G. l.29, Sec. C.. l.d)

Seismic Category I (R.G. 1.29, Sec. C.l.d)

Seismic Categor.y I (R.G. l. 29, Sec. C. l.d)

Seismic Category I (R.G. 1.29, Sec. C. l.d)

Seismic Category I (R.G. 1.29, Sec. c.. l.d)

Class I (FSAR Sec. l 2. l. l. 2)

Class I (FSAR Sec. 12. l.. l.2)

Class I (FSAR Sec. 12. l. l.2)

Class I (FSl\\R Sec. 12. l. l

  • 2)

Class I (FSAR Sec. 12. 1. l. 2 )

9 of 14 Remarks I

1

Components/Subsystems

  • 16.

Turbine Stop Valves Enclosure.

17.

Reactor* Vessel Head Cooling System3

18. Condensate/Feedwater System Piping from outermost co*ntainment isolation valve up to and including the s~utoff

. valve Balance of feedwater system from shutoff valve to the condenser R.G. l.26 SRP 3.2.2 ASME Sec. II I Class 3 (R.G. 1.26, Sec. C. 2.a)

ASME Sec. I II.

Class 2 (R.G. 1.26,

  • Sec. C. l.c)

Quality

. Group D, Quality Group Plant DesJ..9!!.

unless credit taken for function identified under remarks, then ASME Sec. II I,

Class 3

.DRESDEN UNIT 2 Section. XI Classification Seismic Classification R.G. l.29 Plant SRP 3.2. l Design Seismic Category I (R.G. l. 29, Sec. l. e.)

Non-seismic Cate9ory I (OBE)

Seismic Category I (R.G. 1.29, Sec. C. l.d)

Non-seismic Cate9ory I (OBE)

Class II (FSAR Sec. l 2. l. l. 2)

Cl ass II (FSAR Sec. 12. l. l. 2)

Cl ass II (FSAR Sec. 12. l. l. 2) 10 of H Remarks RCIC ty.pe system -

no Qua lit}'

Group or Seismic classification identified in Sec. 10.5.

Condensate/

feedwater system through the standby coolant supply system connect-

on to the ser-vice water system provides an addi~

tional source of feedwater in ex;:_*,

cess of that re-quired to satisfy reactor vessel re-flooding design objectives.

DRESDEN UNIT 2 Qua l ity Grau p Section XI Classification

  • components/Subsystems
19.

Main Steam System From outermost containment isolation valve up to turbine stop and bypass valves and connected piping up to and including first valve R.G. 1.26 SRP 3.2.2 ASME Sec. II I Class 2 (R.G. 1.26, Sec. C. l.c) 20 *. Condensate Sto11age Tank ASME Sec. Ill Class 3

21.

Reacto§ Water Cleanup System.

(R.G. l.?6, Sec. C.l.a & b)

See Rtimarks ASME Sec. Ill Class 3

  • (R.G. 1.26, Sec. C.1.e)

Plant DesJ.9!!.

ASME Sec. I & I II USAS B3 l. l. 0 (FSAR Table 4.1.1)

ASME Sec. I II Class C (FSAR Sec. 10.3)

Seismic Classification R.G. l.29 Plant SRP 3.2.l Desi"gn Seismic Category I (R.G. 1.29, Sec. C. l.e)

Seismic Category I (R.G. 1.29, Sec. C. l.d)

Non-seismic Category I (OBE)

Class II (FSAR Sec. 12.1.1.2)

Cl ass II (FSAR Sec. 12.1.1. 2)

Cl ass II (FSAR

  • Sec
  • 12. l. l. 2) 11 of l 4 Remarks Primary source*;of makeup water for isolation condem.er (which is re-quired for cooldo~m tn the event of MSIV closurid and reactor vessel head cooling sys-tem. Bilckup to HPCI (!iee Table
6. 2.1)

I I I I I

l I I

I

.. t, **,....,,->,.... ~

.. ----~,,_.'":'t~,~*... *~*i!':!'".,_..Wt ___

,...W_l~~~.

  • Compone~ts/Subsystems
22.

Reactor Shutdo~n Cooling System

23.

Reactor Building Closed Cooling Hater System Pumps Heat exchangers Pi ping, fittings and valves

24.

Compressed Air System R.G. 1.26 SRP.3.2.2 ASME Sec. 111 Class 2 (R. G. l. 26, Sec. C. 1. b)

ASME Sec. 111 ClaSls 3 (R.G. 1.26, Sec. C. 2. b)

ASME Sec. 111 Class 3 (R.G. 1.26, Sec. C. 2. b)

Quality Group D, see remarks Quality Grau p Plant DesJJI!!_

  • 111 Class C (FSAR Sec. 10.4)

ASME Sec. VI II (FSAR Sec. 10.10)

DRESDEN UNIT 2 Section XI Classification Seismic Classification R.G. 1.29 Plant SRP 3.2.l Desi*gn Seismic Category I (R.G. 1.24, Sec. C. l.d)

Seismic Category I

( R

  • G
  • l
  • 29,= '

Sec. C. l.g)

Seismic Category I (R.G. 1.29, Sec. C. l.g)

Seismic Category I

(.R.G. 1.29, Sec, C. l.g)

Non-seismic, see remarks Cl ass II (FSAR Sec.. 12. l. l. 2)

Class II (FSAR Sec. 12. l. l. 2)

Cl ass II (FSAR Sec. l 2. 1. 1. 2)

Cl11ss I (FSAR Sec. 12. 1. 1. 2)

Cl ass II (FSAR Sec. l 2. 1. 1. 2) 12 of lA Remark~~

Should be safety-grade to meet current require~*

men ts Portions of air systems required to perform safety function (i.e.

gas or air supply to ADS and MSI valves) should be seismic Category I & Class 3

-,---...---.,_...,.._.._.__.. ________________________________,_""'_,.._.,,,,"""""'""""'*------ll'!XU:1:l.

0

Components/Subsystems

25.

Sta~dby Diesel Generator System

26.

_Service Water System R.G. 1.26 SRP 3.2.2 ASHE Sec. II I Class 3 (R;G. l.26, Sec. C.2)

ASHE Sec. II I

  • Class 3 (R.G. l. 26, Sec. C.2.b)

Qua l ity Group Plant Design DRESDEN UNIT 2 Sectfon XI Classification Seism.:ic Classification R.G. l.29 Plant SRP 3.2.1 Design Seismic Category I (R.G. 1. 29, Sec. c. l.q)

Seismic Category I (R.G. 1.29, Sec. C. 1. c & d)

Class I (FSAR Sec. 12. 1. l. 2)

Class II (FSAR Sec. 12. 1. 1. 2) 13 of l 4 Remarks FSAR Sec. 8.2.3 does not ident-ify auxiliary systems required for D/G (i.e., *,

oil coolers, compressed air or water system:

for cooling D/G) as identified in R.G. 1.29 (Sec. *:c il :g)

Service water system should be seismic ASME Sec. 111,.Class 3, since it pro~

vides secondary cooling for safety-related sys terns ( i. e.,

reactor building closed cooling water sys tern);

also supplies an additional source of water through the standby cool-ant* supply sys-tem to the ECCS in excess of that required to satisfy reactor vesse 1 re flood-i ng and contain-

.. *-----~-----.......,._,........ ~................ -....._.., *

.-~~.._,,,._ _____________

.~*....... 11.-.......u1~...._.., __________...,...._ ______.... __

Components/Subsystems

26.

Cont.

21.

Standby4Electric Power Systems Station batteries Essential Buses and other electrical gear and power to critical equipment

28.

Instrume~tation and *

  • Controls R.G. 1.26 SRP 3.2.2 Reactor level instrumentation Feedwater control instrumentation Qua 1 ity Group Plant Des...!fil!.

Standby liquid control system instrumentation Manual reactor control system Control rod instrumentation Control rod position indicating system Reactor protection system Neutron monitor system In-core*neutron monitor system Area monitors Process monitors

. DRESDEN UNIT 2

.Section XI Classification Seisro.ic Classification R.G. 1.29 Plant SRP 3.2.1 Design Seismic Category I (R.G. 1.29,

. Sec. C. 1.q)

Seismic

  • Category I (R.G. 1.29, Sec. C.1.q)

Class I (FSAR Sec. 12. 1.1. 2)

Class I (FSAR Sec. 12.1.1.2) 14 of 14 Remarks ment flooding design object-

/

ives.

Class I - Definition in Section 12.0 of FSAR "Structures and equipment whose failure would cause significant release of radioactivity or which are vital to a proper shutdown of the plant and removal of. decay heat" Designed to withstand SSE loads.

2 Class II - Definition in Section 12.0 of FSAR .Structures and equipment which are both essential and nonessential to the operation of the sta*:ion, but which are not essential to the proper shutdown." Class II items were designed following normal design practice for power plants in the State of Illinois, but as a minimum were designed to not less than that given in the "Uniform Building Code" Zone 1.

3 Quality Group and seismic category identified for specific systems that are connected to RCPB are only applicable up to the isolation valves that separate the identified system from the primary system.* Parts of the system between the isolation valve and reactor vessel are considered part of RCPB.

4 Standby Electric Power and Ins"trumentation and Controls Systems no.t reviewed I

e.

Seismic Category A:

Seismic Category B

  • seismic Category C:

SEISHICITY INFORMATION PERTAINING TO DRESDEN UNIT II Components, systems, and structures_ important to the nuclear safety of the plant were designed for combined stresses due to*

stat1c hydraulic thermal & seismic loads and forces.

Seismic stresses were based *un a maximum ground accelerat1on of 0.2g which is twice the maximum expected response.

.I Components, systems, and structures important to the continuity of power generation or whose contained act1v1ty 1s such that release would not constitute:a hazard.

No components, systems or structures identified 1n the Dresden ll FSAR were class1f1ed in this category.

All remaining structures not;'i1trectly associatedwlth power generat_ion were designed in accordance wfth_ the "Un1form Building Code.

11

Reference:

Section 12. 1. 1 of fSAR.

NOTE:

Seismic Category I (SSE)= Seismic Category A. *seismic Category B = OBE design.

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