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Chapter 15 to Midland 1 & 2 PSAR, Proposed Tech Specs. Includes Revisions 1-36
	ML20008D791
Person / Time
Site:	Midland
Issue date:	01/13/1969
From:	; CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	;
References
	NUDOCS 8007300709
	Download: ML20008D791 (38)
	v • d • e

{{#Wiki_filter:fm V) 15 PROPOSEDTECHNT3LSPECIFICATIONS 15 1 DEFINITIONS 15 1.1 MTED PO* DER No:=al Opera: ion No. 1 Unit No. ? Unit NSS Output 2,568 Wt Core Therral Output 2 60 Wt 2,552 Wt 152 Wt Gross Electric 527,000 d55,000 Net Electric h92,000 818,000 197 Psta Process Steaa :o Dov 3,650,000lb/br - 675 Psia Process Stea= to Dow 400,000 lb/hr - No.1 Unit Off and No. 2 Unit in Service NSS Output 2,568 Wt Core Ther=al Output 2,552 Wt Gross Electric h15 We Net Electric 380 We 197 Psia Process Stea= to Dov 3,650,000 lb/hr 675 Psia Process D ([Nj Steam to Dow h00,000 lb/hr 15 1.2 REACTOR OPERATING CONDITIONS 15.1.2.1 Power Operation 15 1.2.2 Hot Standby 15 1.2 3 Hot Shutdown 15 1.2.4 Cold Shutdown 15.1.2 5 Refueling Operation 15 1.2.6 Core Alteration 151.27 Shutdown Concentration 15 1.2.8 perueling Ceneentration

    -15 1 3      OPERABLE 15 1.4      OPERATINO 15 1 5      PROTECTIVE SYSTEMS p    15151         Instrument Channel v    15 1 5 2      Reactor Trip                              00ft:;c 15-1                             Amendment No. 5 8007300                                                                                   11/3/69

Q 15 1 5 3 Protective Syste= Logie 15 1.6 INSTRUICITATION SURVEILIANCE 15 1.6.1 Syster Calibration 15 1.6.2 Syste= Test 1517 SAF M LD!IT ' 15 1.6 MAXIMUM SAF M S M ING 15 1 9 REACTOR BUILDING INTEGRITY - REQUIRDCiTS 15 2 SAF M LIMITS AND MAXIMUM SAF M S M INGS 15 2.1 SAFETY LIMITS - REACTOR CORE 15 2.1.1 Applicability This specification applies to reactor power, reactor coolant system flow, temperature and pressure. 15 2.1.2 Objective To caintain the integrity of the fuel cladding and prevent the release of Q significant amounts of fission products to the reactor coolant. 15 2.1 3 Spe:ifications'

(Applicable Limits) 15 2.1.h Bases The bases used to establish specific limits would be defined in this section. 15 2.2 SAFM LIMIT - REACTOR COOLANT SYSTD4 15 2.2.1 Applicability Applies to the licit on reacter coolant system pressure. 15 2.2.2 Objective i The reactor coolant syste= is designed to caintain its integrity under all cperating conditions. ktile perfor=ing this function, the system serves the safeguards objective of minitizing the release to the reactor building of fission products that escape the pricary barrier, the core cladding. 15 2.2 3 Specifications [] (Applicable Limits) V

                                                          - OOOb j, 2                         Amendment No. 5 11/3/69

~~

15 2.2.h Bases

 ,           The bases used to establish specific 11=its vould be defined in this section.

1523 SYSTIM TRIP S1': TINGS 15 2 3 1 Applicability This specification applies to trip settings for instru=ent channels =enitorinE reactor power and reactor coolart pressure, te=perature and flow. 15 2 3 2 Objective Reactor protective syste= settings are chosen so that the safety li=its vill , not be exceeded. 15233 specifications (Applicable L1=1ts and Outline as Proposed in Table 15-1) The abnor=al conditions that initiate a reactor trip are as follows: Table 15-1 s Steady-State Trip Value er Trip Variable No of Sensore Nor=al Range Condition for Trip Neutron Flux Neutron Flux / Reactor i Coolant Flov l Start-Up Rate Reactor Coolant Pressure Reactor Outlet Te perature The reactor trip functions of the pover/flov monitor logie are su==arized as follows: I Trip Variable No of Sensors i Neutron Flux Reactor Coolant Flow ? No of Operating Pumps if l' \ ,-

l ()(Ji,3E#, 15-3 Amend:ent No. 5 l 11/3 /69 l_. . . _ . _ _ . . _ . . _ _ _ _ . _ _ _ . _ _ _ . _ . _ . . _ _ ,. . _ _

w 15234 Bases The bases used to establish specific li=its would be defined in this section. 15.2 3.4.1 High Power Level 15 2 3.k.2 Low Reactor coolant Flov 15 2 3.h.3 High-Pressurizer Pressure 15 2 3.h.h High Power Rate of Change 15 2 3.h.5 Manual 15 3 LIMITIrm CONDITIONS FOR OPERATION 1531 REACTOR C00IAfs'I SYSTEM 15 3 1.1 Reactor Coolant Systen Activity 15 3 1.1.1 Applicability Applies to the operating status of the reactor coolant system activity. i 15 3 1.1.2 objective To assure a reactor coolant activity level that does not compro=ise the safety of plant personnel and the public. 15 3 1.1 3 Specifications (Applicable Limits) 15 3 1.1.4 Bases The bases used to establish specific li=its would be defined in this section. 15 3 1.1 5 Reference 15 3 1.2 Operational Components 15 3 1.2.1 Applicability Applies to the operating status of the reactor coolant syste: equiptent. 15 3 1.2.2 objective To specify the limiting conditions for operation of the reactor coolant syste: components to insure safe reactor operation. t 15 3 1.2 3 Specifications [_ \

   \~ I                       (Applicable Limits)             (){)p.g g 15-4                              Amendment No. 5 11/3/69

C 4 ( 15 3 1.2.h Bases The bases used to establish specific li=1ts would be defined in this section. 15 3 1.2 5 Reference 15 3 1 3 co=bined Heatup, cocidown and pressure Li=itatiens L 153131 Applicability Applies to eactor r coolant syste= cenperature and pressure conditions during heatup and cocidevn. 153132 objective To operate the syste= within the design ; ara eters. 153133 specificatiens (Applicable Litits) 1531331 Reacter vessel 15 3 1 3 3 2 . Pressurizer (A 15 3 1 3 3 3 stea= cenerators 15 3 1 3.k Bases The bases used to establish specific litits vould be defined in this section. 15 3 1.h Leakage 15 3 1.k.1 Applicability l Applies to leakage frc= the reactor coolant syste=. l l 15 3 1.4.2 objective To specify allevable leakage li=its for the reacter syste=. 15 3 1.h.3 specificatiens ( Applicable Limits) I 15 3 1.4.h Bases The bases used to esteblish specific limits would be defined in this section.

15 3 1.h.5 References 1532 MAOUP AND PURIFICATION p

t' l 0051 15-5 A=end=ent No. 5 11/3/69

15 3 2.1 Applicability Applies to the operational status of the takeup and purification syste=. 1532.2 Objective To define those conditiens of the =akeup and purificatun syste= to assure safe reacter operation. 15 3 2 3 Suecifications (Applicable L1=its) 1532.4 Bases The bases used to establish specific limits vould be defined in this section. 15 3 2 5 Beterences 15 3 3 DERGDiCY CORE COOLEiG SYSTUG 15331 Applicability Applies to the operational status of e=ergency core cooling equi; cent and syste=s. rh 15332 Objective Specify equiIr.ent require =ents to provide e=ergency core cooling under all circu= stances. 15333 Specifications (Applicable Li=1ts) 15334 Bases The bases used to establish specific limits would be defined in this section. 15335 References 15 3 4 MINEM ETER VOLUME AND BORON CONCENTRATION Hi THE l BORON 'n'ATER STORAGE TANK 15 3.h.1 Arplicability Applies to the inventory of borated water available for safety injection and reactor building spray. 15 3.h.2 Objective Specify the =ini=u= vater volu=e te=perature and boren concentration of the o safety injection and borated water storage tank to insure adequate safety , .lL,j \ injection and reactor building spray water. l 009.W; 15-6 Amend =ent No. 5 11/3/69

'\

j 15 3.h.3 S;eeificatiens (Applicable Limits) 15 3.h.h Bases The bases used to establish specific li=its vould be defined in this section. 15 3 5 SECCNDARY STFM AND AUXILIARY FEED 'Am CYCLE 15 3.J 1 Areliecbility Applies to the operating status of the secondary steam relieving c0cponents and the auxiliary feed-water syste= cc=ponents. 15 3 5 2 objective To specify conditions of equi; cent in the auxiliary feed-water and secondary steam relieving systems to assure capability of re=0ving decay heat frc: the reactCr Core. 15353 specifications (Applicable Limits) 15 3 5.h Bases The bases used to establish specific limits would be defined in this section. 15 3 5 5 References 15 3.6 OPEBATICNAL SAFETY INSTRU!ENTATION AIG Com'ROL SYSTHG 15 3 6.1 Applicability Applies to the operability of plant instru=entation and control syste=s required for reactor safety. 15 3.6.2 objective To specify li=its of operability of c0=penents in the safety instrumentation syste=s.

a. The protection syste: logic shall be =aintained to Operate in two-out-of-four mode. The protective syste: Icgic =ay be changed to a one-of-three channel actica required for trip when a channel is recoved for naintenance.

b. If the minimu= logic requirements of a particular para eter for power operation cannot be =et, the reactor shall be placed in the het shutdown condition.

'[^ 15363 specifications (Applicable Li=its) OO'MC 15-7 Amt.nd:ent No. 5 n/3/69

   -_-  -. _.- .  -           .. . _ -      ..    -       . _ - - _ ~

15 3 6.h Bases The bases used to establish specific li=its vould be defined in this section.

15 3 6.5 References 15 3 7 REGULATING GROUP INSISTION LIMITS
15 3 7 1 Applicability 1

Applies to control rod asse=blies (CRA) insertion during reactor operation. 15 3 7 2 Ob.iective To specify licits of control rod assembly movement to assure an acceptable power distribution during power operation, limiting of worth of individual CRA to values analyzed for accident conditions, and maintaining adequate shutdown cargin after a reactor trip. 1 15373 specifications ] (Applicable Limits) 15 3 7.h Bases 7- The bases used to establish specific limits would be defined in this section. 15374.1 Control Rod Assembly Insertion T.irits 15 3 7 4.2 Rod Drop Time 15 3 7.h.3 Inoperable Control Reds 15 3 7 4.h Nuclear Power Factors 15375 References 1538 REACTOR BUILDING 15 3 8.1 Applicability Applies to the status cf reactor building. 15 3 8.2 Ob.iective To specify conditions required to insure reactor building integrity during reactor operation. 15 3 8 3 specifications 4 (Applicable Limits)

D 153831 Leakage '~ 153832 Reactor Building Integrity 15-8 000'W" Amendmont No. 5 11/3 /69

1 l

15 3 6 3 3 Internal Pressure i

,                        15 3.8 3 k            Reactor Building Air Coolers, Spray Syste= and Spray Additive Syste:                                                                                         [

15 3.8 3 5 Equiptent Fed by Diesel Generator 1-2 { 15383.6 Equipment Fed by Diesel Generator 1-1 15 3 6.h Bases The bases used to establish specific limits vould be defined in this section. 4 15385 References 1539 STATION SERVICE POWER , 15391 Aruls ability Applies to the availability of station power to operate auxiliaries. 15392 Objective To specify conditions of station power necessary to assure safe reactor operation and availability of engineered safeguards equipment.

   /      '

15393 Specifications (Applicable Limits) 15 3 9.L Bases The bases used to establish specific limits vould be defined in this section. 15 3 9 5 References 15 3 10 REFUELING 15310.1 Applicability j Applies to operating limitations during refueling operations. 15 3 10.2 Objective To specify conditions which vill assure safe operations during refueling. 153103 Specifications (Applicable Limits) ' 15 3 10.h Ba2es The bases used to establish specific limits would be defined in this section. 153105 -References 20(?>1464 15-9 Amendment No. 5

11/3/69

1 I N 15 3 11 REACTIVITY ANOMALIES 15 3 11.1 Applicability Applies to potential reactivity ano=alies. 15 3 11.2 Objective To establish evaluation specification in the event of a discrepancy between pre-dicted and observed bcron concentration requirements for normalized conditions. 15 3 11 3 specifications (Applicable L*=its) 15 3 11.4 Bases The bases used to establish specific limits would be defined in this section. 15 3 11 5 References 15 3 12 MODERATOR COEFFICIENT OF REACTIVITY 15 3 12.1 Applicability f Applies to the moderator coefficient of reactivity for the core. \ 15 3 12.2 Objective To specify a licit for the positive coderator coefficient. 15 3 12 3 soecifications (Applicable Limits) 15 3 12.h Bases The bases used to establish specific limits veuld be defined in this section. 15 3 12 5 References 15 3 13 STARTING OF AN IDLE REACTOR COOLANT PUM? 15 3 13 1 Applicability Applies to the reacter power level and reactor coolant te=peratures necessary for starting a reacter cociant pu=p vith the reactor critical. 15 3 13 2 Objective To maintain limits within the design boundaries of the reactor coolant syste= by specifying the power level and reactor coolant temperatures required prior h U to starting a reactor coolant pump. 00F S 15-10 Amendment No. 5 11/3/69 m - . _ - _ ._. . _

15 3 13 3 Specifications (Applicable Limits) 15 3 13.h Bases The bases used to establish specific limits vould be defined in this section. 15 3 13 5 References 153 1h REACTOR COOLANT CHEMISTRY 15 3 14.1 Applicability Applies to the oxygen and chloride concentration in the reactor coolant. 15 3 1k.2 objective To protect the integrity of the reacter coolant syste= under all operating conditions by maintaining oxygen and chloride concentrations within accept-able levels. 153143 Specifications (Applicable Limits) 15 3 14.h Bases The bases used to establish specific lir.its would be defined in this section. 15 3 15 HYDROGEN VENT SYSTS! 153151 Applicability Applies to reactor building hydrogen vent system after !GA. 15 3 15 2 objective To per=it diluting the reactor building atmosphere to maintain a hydrogen con-centration less than 3 5 volume percent following the MHA. 153153 Specifications (Applicable L1=its) 153154 Bases The bases used to establish specific limits would be defined in this section. oso 15-11 Amendment No. 5 11/3/69

15.h SURVEILIANCE REQUIRI2e.TS v 15.h.1 OPERATICHAL SAFIHT ITI2G 15.h l.1 Applicability Applies to plant equipnent directly related to safety li=its and li=iting con-ditions for operation. 15.h.1.2 objective To specify the mini =u: frequency and type of surveillance t3 be applied to plant equipment and operating conditions. 15 k.1 3 Specifications (Applicable Limits) 15.h.l.h Bases The bases used to establish specific limits would be defined in this section. 15.k.1.4.1 Calibration 15.h.1.4.2 Checks iO i Table 15-2 Minicu= Frequencies for Testing, Calibrating and/or Checking of Instru=ent Channels Channels Action Minimum Frequency

1. Power Range Safety and Calibrate to Heat Control Channels Balance Calculation Check Test

2. Logarith=ic Channels Check Test 3 Start-Up Channels Check Test t

k. Reactor Coolant Calibrate Te:psrature ggg Test 5 Reactor Coolant Flow Calibrate Cheek

    - x'~~)                                                 Test 000R1.

15-12 Amendment No. 5 11/3/69

i Table 15-2 (Contd) Channels Action Mini =um Precuency

6. Pressurizer Pressure Calibrate Check i

Test 7 Pressurizer Level Calibrate Check Test ,

8. Charging Flow Calibrate Check 9 Rod Position Indicators Check (Comparison Be-tween Two Readout Systems)

10. Boric Acid Tank Levels, Calibrate 7,_s Temperatures, Heater Controls, Line and

     '(d i
'                                                           Check Pu=p Heater Controls and Temperatures

11. 33 rated Water Tank Calibrate '

Level Test

12. Makeup Tank Level Calibrate Test 13 Reactor Building Calibrate Pressure and Radiation

, 14. Area and Process.Radia- Calibrate tien Monitors Test 15 Reactor Trip Logic Test System

16. Environmental Monitors Check

17. Emergency Plan Radiation Calibrate Instruments 1

Check I V

18. .ceked Isolation Valves Check Position OTxP.

15-13 Amendment No. 5 11/3/69

O Table 15-3 Minimum Equipment Check and Satpling Frequency

                          -Item                             Check                 Frequency
?

i 1. Rcutine Reactor Coolant a. Total Activity and Tritiu Samples

;                                            b. Boron Concentration During Plant Operations, Chemis-t g (C1 and 02 )

c. Boron Concentration During Refuelir4

2. Borated Water Tank Sample Boron Concentration 3 Boric Acid Storage Tank Boron Concentration Sample 4

4. Control 'd Drop Verify Drop Times of CPAs

! 3. Control Rod Exercising Partial Movement of All Rods 6 Control Red Interlocks Check Functioning i i D. Q 7 Pressurizer Safety Valves Pressure Set Point

8. Main Steam Safety Pressure Set Point

9. Main Steam Isolation Check Functioning Valves

10. Pressurizer Power- Check Functioning Operated Relief Valves

( 11. Refuel System Interlocks Check Functioning i

12. Reactor Building Check Functioning Isolation Valves 13 Diosel Fire Pu=p Check Functioning

14. Spent Fuel Pool Boron Concentration 15 Core FloodinE Tanks Boron Concentration 16.- Reactor System Leakage Evaluate 17 Secondary Coolant Radioactivity 3.m 16. Process Steam Radioactivity

{ \ N.__/ -n l l 00000 15-14 Amendment No. 5 n/3/69 L

15.k.2 SAFETY INJECIION AND REACIOR BUILDING COOLING SYSTIMS PERIODIC TESTING 15.h.2.1 Applicability Applies to testing of the safety injection and reactor building cooling syste=s. 15 4.2.2 Objective To verify that these systems vill respond promptly and properly if required. 15.h.2 3 Specifications (Applicable Limits) 154.231 Safety Injection System 15 4.2 3 2 Reactor Building Spray System and Spray Additive Systet 15.4.2 3 3 Reactor Building Air Cooling Recirculation 15.4.2331 Tests 15.4.2 3 3 2 Frequency tG 15 4.2.4 Bases (v) The bases used to establish specific limits would be defined in this section. 15 4.2 5 References 15.4 3 ENVIRONMENTAL RADIATION SURVEY 15.431 Applicability Applies to routine testing of plant environs. 15.h.3 2 objective To establish a sampling schedule which will assure recognition of changes in radioactivity in the environs. 15 4 3 3 Specifications (Applicable Limits) 15 4 3.h Bases The bases used to establish specific limits would be defined in this section. Q,) 00PBM: 15-15 Amendment No. 5 11/3/69

    -     .             . .   . .           _~.            -._            _ _ -     . -. ...         . - - - -          _ _ .        -_   .

Table 15-L i a Stecific Samples and Collection Frecuency A= cunt To Be Collected -

                     . Sample Class               Collection Frequency                                         Cperational Air i                     River Vater Well Water Milk Organic j                      Fil= or TLD 15 4.4        RFACTOR KTILDING 15.k.k.1        Applicability Applies to initial and periodic reactor building leakage testing.

15.h.4.2 ob.je ctive To verify that leakage from the reacter building confer =s to specified limits. 15.k.h.3 Specifications i i

      ,'y                             (Applicable Li=its) g                                                                                                                                             t V              15.h.h.3 1        Integrated Leakage Rate Tests 15 4.h.3 1.1          Test Procedure 15.h.h.3 1.2          Acceptance Criteria 15 4.4 3 1 3         ~ C0rrective Acticn for Retests 4

15.4.h.3 1.4 Test Frequency 15.h.4 3 2 ~ Local Penetration Tests 4 15.k.k.3 2.1 . Tests 15.h.h.3 2.2 ' Acceptance Criterien and Cerrective Action i [ 15.h.h.3 2 3 Test Frequency

                    -15.k.h.3 3         Reactor Building Isolation Valves-15.h.h'.3 3 1         Tests 15.4.h.3 3 2         . Acceptance Criterica and Correction Action it                   15.h.4 3 3 3           Test Frequency I-15-16                                    A=end=ent No. 5 00a***

11/3/69

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H 0 i O M >a M M "3 + E- > O c ' O LO d 15-17 (I .on "'v .x. st

'?s l Amendment No. 5 11/3/69

15.h.h.3.h Report of Test Results

    \-      15.h.h.h        Bases The bases used to establish specific limits would be defined in this section.

15.h.h.5 References 15.k.5 EERGEt!CY POWER SYSTH4 PERIODIC TESitiG 15.h.5 1 Applicability , Applies to periodic testing of the emergency power syste=. 15.h.5 2 Objective To verify that the emergency power diesel generator system and station batteries will respond properly and pro =ptly when required. 15.h.5 3 specificatiens (Applicable Limits) d 15.h.5 3 1 Diesel Generators 15.h.5 3 2 Station Batteries -

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 -l        15.h.5.h        Bases

( The bases used to establish specific limits would be defined in this section. 15.4.5 5 References 15.h.6 AUXILIARY FEED-WATER PUMPS' PERIODIC TESTEIG 15.h.6.1 Applicability Applies to periodic testing of both turbine- and motor-driven auxiliary stci: generator feed pu=ps. 15.h.6.2 Obje ctive To verify the operability of the auxiliary stea= generator feed pu=ps and j their ability to respond properly if required. 15.h.6 3 Specifications

                          '(Applicable Limits)
          -15.h.6.h        Bases
          . The bases used to ectablish specific ltnits would be defined in this section.
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15.h.6.5 References v 15-18 GON[/ Amend =ent No. 5 11/3/69

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nee.. .. Applies to the release cf radioactive '1 quid vaste te the environs. 15.L.7 2 Ob.ie ctive

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15.k.7 3 Specifications (n.,y..,4esclo. e.4_ m 4.s)

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             .$ )e. * . 7. t.                 .mses The bases used to establish specific limits would be defined in this secticn.

15.k.7 5 Referances 15.L.5 RADICACT3*E GASEOUS 'GSTE RELEASE

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             ,        -o         ,

Ar 3 ~4 no w.. 41.4 +v. . Applies te surveillance requirements fer centrolling release of mdicactive cx 8 i gas from the plant stack.

      /     15.k.S.2                          cbjective To verify that discharge of radicactive gasecus vaste to the at=csphere vill net exceed the limits of 1C CFR 2C.

15.k.e.3 Sce cifications (n--l.4u ca x, o. .<-4.s) u_o 15.k.6.k 'ss e s The bases used to establish specific limits vculd be defined in P.is sectien. 15.k.S.5 References 3:,.L.c

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Applies to precperational and in-service structural surveillance er the reactor vessel and other reacter syste ect;cnents. 15.k.9 2 objective To insure the integrity of the reacter cc .t system. s,/ sx r

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-T 4 r r 15.h.9 3 Specifications

,                                       (Applicable Lirits) i                  15.L.9.h              Bases i                 The bases used to establish specific limits vould be defined in this secticn.
                .15.L.9 5              References i                                                  Pest-One-ational Inspecticns                                                 1 4

i 1 Areas To Ee I'va

nei Method Interval 1 i Reacter Vessel

1. Flange-to-Terus Head Weld V+'--a+ 'a i

2. Flange-to-Shell Vessel Weld Volunetric 3 Inner Radii cf Outlet Nc::les Visual i

k. Centrol Rod Drive Housings Surface to Eeacter Head t

5 Reactor Outlet NO::le-to- Volumetric + f Shell Welds, Ncz:le-to-Safe i L End Welds and Safe End-to-

                     . p.4y .4.g
                             -    yo,a-s

6. Heed Shell Studs Volumetric Suriace 7 Seal Surface of Eeactor Visual Head and Vessel S. Reacter Inlet Nc::le-to- Velu=etric Shell Welds, Nc::le-to-Safe
-End Welds and Safe End-to-

                      **"r*
                      .. . s- Walde 9    Lcngitudinal and Circurfer-            Volumetric ential Welds in Core Region 4                                                                                                                                ,

Feactor Pi-ing Syster

1. Pressurizer Surge Line-to Volu=etric Eeactor Cociant Piping Weld

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   'A, t

15-20 O '"J m y'O b A=end.=ent Nc. 5 11/3/69

                        -( _ ..

a f

Post-Ooerational Insrections (Contd) A Areas To Be Examined Method Interval

          . Reactor Piping System (Contd)

2. Selected Piping Connections Volunetric 3 Inches and Larger to Reactor Syste=

3 Dissimilar Welds of One Volumetric Reactor Coolant Pump Surface

h. Longitudinal and Circumfer- Volu=etric ential Welds in Main Reactor Coolant Piping Pressurizer

1. Outlet Piping to Botto= Volumetric Head Weld

2. Longitudinal Welds in Volumetric Pressurizer 3 Upper and Lower Head-to- Volunetrie 4QV Shell Welds Stea= Generators 1.- Noz ; -to-Piping Welds Volu=etrie

2. Head-to-Tube Sheet Welds Volumetric 3 Support Stand-to-Head and Volumetric Head-to-Tube Sheet Welds 15 5 . DESIGN FEATURES

        ~15 5 1          SITE The Midland Plant reactors shall be located on the 8SO-acre site owned by Consumers Power Company. This site is located in Section 27 cf Midland County
        . and is' adjacent to the south shore cf the Tittabavassee River and the Dow Chemical Conpany industrial ccaplex in Midland, Michigan. Figure 2-1 of the PSAR indicates the site boundary. The minimum distance to the boundary cf the exclusion area as defined in 10 CFR 100 shall be 500 meters.

The principal activities on the Midland site shall be those associated with the operation of the plant and cay include other activities directly connected with the generation, transmission and distribution of electric energy and process steam to the Dow Chemical Company. I f'% t,v) 15-21 (jCr'W'lb

                                                                        # ^ Amendment No. 5 11/3/69 m- "A

15 5 2 REAcroR BUILDING DESIGN FEATURES 15 5 2.1 Reactor Building Structure The reactor building structure ec=pletely encloses the ree:ter ecolant syste= to minimize release of radicactive naterial to the environ =ent should a serious failure of the reactor coclant syste= occur. The structure provides biolegical shielding for both nor=al operation and accident situations. The reactor build-ing structure is designed for C.1%/ day leakage by net volu=e at a design pres-l sure cf 67 psig and 297 F. The structure is capable cf withstanding the internal pressure resulting fro: a design basis accident which is severance of a reacter coolant pipe coincident with a loss of nor=al and standby electrical power. Subsmicent pressure be-havior is determined by the engineered safeguards and the ec=uined influence of energy sources and heat sinks. The external design pressure of the reactor building shell is 2-1/2 psig, which is equivalent to having a barometric pressure rise to 3h inches of =ercury after the reacter building was sealed at 29 inches of =ereury. The =aximu= ground surface acceleration due to earthquake is 0.12 g ground sur-face acceleration. Seistic forces are applied si=ultaneously in the vertical and any horizontal direction. The vertical ec=ponent of acceleratien at any level is taken as two-thirds of the horizontal ground acceleration. ( .s 15 5 2.2 penetrations s All penetrations through steel-lined concrete structure for electrical conduc-tors, pipe, ducts, air locks and doors are of the double barrier design. These penetrations vill be pressure resistant, leak-tight velded assenblies. The auto =atically actuated reactor building isolation valves are designed ;v close upon high pressure in the reactor building structure. Valves which iso-late penetrations that are directly open to the reactor building atmosphere vill be closed on a high radiation signal. No single co=ponent failure in tha actu-ation syste= will prevent the isolation valves frc= functioning. i i i 15 5 2 3 Reactor Building Structure Cooling Systers l The syste: for each unit consists of two pu=ps, two reactor building spray ( headers, isolation valves, two che=ical additive tanks and the necessary piping, instru=ent and controls. The syste= vill be actuated by high reacter building pressure. This system takes suction frc= the borated water storage tank and simultaneously chemical additive syste= starts injecting a chemical solution ! into the spray pu=p lines. The spray syste= heat re= oval rate has a design ! capacity cf 200 x 100 Etu/h. I 15 5 2.4 Reacter Building Eydrogen Vent Syste: The syste= for each unit consists of an electric motor-driven fan, a roughing filter, a high efficiency particulate air (EEPA) filter, an electric heater t and a charcoal filter. This syste: vill be controlled frc= the control roo=. D 15-22 ( ERym'J' Amendment No. Ik 7/31/70

a. .

1553 Ni102AE SGS. SU??2 SYSTE! (NSS) 15531 Reacter Ccclant Syste: The reactor ecclant system shall be designed and constructed in acceriance with the ASE Sciler and Pressure Vessel Code, Sectic: III, Rules fer Ccnstruction of nuclear Vessels,and the USAS Code for Pressure Piping 3317 The reacter coolant system shall be designed for a pressure of 2500 psia and a temperature cf 650 F except fcr the pressuricer which shall have a design te:- perature cf 670 F. 15531.1 Deflectics Id its Lteral defle-cion and torsienal rotation of the lover end of the ccre support assembly will te li=ited to pravent excessive =cve=ents resulting frc: seis=ic disturbance and thus prevent interference with centrol rod assemblies (CPA). Core drop in the event of failure of tha -C supports vill be limited se that the CRA do not disengage frc: the *uel assembly guide tubes. The structural internals vill be designed to =aintain their functienal integrity in the event of a =ajor less-cf-ecclant accident. The dyna =1e loading resulting frc= the pressure oscillations because of a less-ef-r eslant accident vill net prevent CF.A insertion. Internals vent valves are previded to relieve pressure generated by stessing in the core, following a postulated reactor coolant inlet pipe rupture, se that

 ,    's      the'ecre vill re=ain sufficiently cocled.
     ' Q)i 15532           Reseter Cere an:1 Centrol 15532.1           Reacter Core
             !ach reactor core shall approximate a right circular cylinder with an equivalent die =eter of 123 9 inches and an active height cf ihh inches.

Each reactor core shall ner: ally censist Of apprcri=ately 37,000 Zirealcy L 7 clad fuel rods centaining slightly enriched uraniu in the for: of sintered UO2 pellets. The fuel reds shall ner= ally be grcuped into 177 bundles arranged as shevn in Figure 3-k cf the PSAR. The fuel is arranged in a three-zone cen-fign.%tion. The first-cycl < fuel enrich =ents are prcpesed at 2 30, 2 30, 2.6k (by zone) W/0 U-235 Sixt' en centrcl red holes in 72 cf the fuel asse=blies not equipped with centre' red assemblies vill be utiliced as locatiens #~ "- - able pcisen rods. 2.* .nenable peisen vill be ELC in Al 02 3 vith an effective length of 126 inch =s of the poisen section. 1 Each initial core shall contain approximately 9h.5 =etric tens of uraniu: di-cxide. A stall 4 cunt cf boron carbide pcison shall be placed in the fuel bundles for leng-ter: reactivity centrol as shewn in Figure 3-52 cf the 3AR. Each initial ccre excess reactivity shall be controlled by a ec=bination cf

scluble beron, kT control rod assemblies (CE ' 6 xenen control rod assemblies (XCRA) and =er hard cally fixed poisen rods in lected fuel asse: blies.

. .i ! k~ 15-23 OnN* Amendment Nc. 5 11/3/69

                   -m--

e w e e - ++ - - - - - a - ~ ~ - -

Q 15533 E=ergency core cooling Syste= b An emergency core cooling syste= for each reactor unit shal_. be installed. This will consist of various substations each with internal redundancy. These subsystems for each unit shall contain two safety injection tanks se;arated fro = the reactor syste= by two check valves and a stop valve. Each reactor j unit shall have three high-pressure makeup pu=ps and two decay heat pu=ps. Each reactor unit vill be supplied fro a borated water storage tank which 4 is co==on to both units as shown in the PSAR Figure 6-1. 15 5.h FUEL STORAGE 15 5.4.1 New Fuel Storace The new unirradiated fuel bundles vill nor= ally be stored in the dry new fuel storage rack with an effective multiplication factor of less than o.90 even if flooded with nonborated water. New fuel =ay also be stored in shipping containers. New fuel =ay also be stored in the spent fuel pool racks which have an effective c itiplication factor of o.90 or less with new Midland fuel and unborated water. 15 5.4.2 Spent Fuel Storage , Irradiated fuel bundles will be stored, prior to off-site ship =ent, in the Q stainless steel-lined spent fuel pool. b) The Opent fuel racks are designed to =aintain fuel in a gec=etry which insures an effective c:ultip11 cation factor of o.90 or less with the fuel flooded with unborated vn er. The spent fuel pool is norally filled with borated water with a concentration of approxi=ately 2270 pp=. 4 The spent fuel racks are designed for seis=ic Class I rating. 15.6 ADMINISTRATIVE CONTROLS 15.6.1 ORGANIZATION 15.6.1.1 Levels of Resnonsibilities 15.6.1.1.1 Plant Superintendent The Plant Superintendent is directly responsible for the safe operation of the facility. The Plant Superintendent shall report directly to the Electric Pro-duction iuperintendent - Nuclear in all =atters pertaining to operation of the plant ami to these Technical Specifications. The organization is shown on , Figure 15-1.

    '# g.

(v ) 15-24 00m'eA=endment

                                                                            " "        No. 5 11/3/69

("' 15.6.1.1.2 Senior Vice President of Electric Operations V The Senior Vice President of Electric Operations has the prime responsibility

          ... operation, with respect to technical and safety matters, of all nuclear power plants on the Censumers Power Co pany system. The levels of responsi-bilities are as shown on Figure 15-1.

15 6.1.1 3 Director of Nuclear Fuel Supply The Director of Nuclear Fuel Supply is responsible fee the procurement of all nuclear fuel for Consu=ers Power Company. He repcets directly to the Senior Vice President in charge of Electric Operations. 15.6.1.1.4 Electric Production Superintendent - Nuclear The Electric Production Superintendent - Nuclear, reporting to the Manager of

        - Bulk Power Supply, is responsible for overseeing the technical and safety as-pects of all operating nuclear generating plants. Reporting directly to him, or i==ediately available to him, are experienced staff engineers with expertise in the areas of reactor physics, ther=al hydraulics, mechanical design, metal-lurgy, health physics, plant operation, plant taintenance, nuclear fuel manage-ment, chemistry and radioche istry. The Electric Production Superintendent -

Nuclear and his staff are in frequent contact with the nuclear plants and maintain an independent review of all aspects of nuclear plant operation. 15.6.1.2 Plant Organization n The lines of responsibilities for the operation of the Midland Plant within (s_- J the plant organization (Figure 15-2' tre as follows: The Plant Superintendent shall have the overall on-site respo.sibility for the safe and proper opera-tion of the plant. He is responsibit for the on-site determination as to whether or not :hanges in th? iacilit) in the procedures, and in the conduct of tests involve an unreviewed safety q estion. Available to assist hi= in this determination vill be the plant tecnnical staff. The Assistant Plant Superirtendent assiste the Plant Superintendent. He is responsible for the plant operation and maintenance. In the Plant Superintendent's absence, he assumes his responsibilities. ( ) LJ 15-25 00PM Amendment No. 5 11/3/69

(v ,) BULK POWER SU '_Y ORGANIZATION CHART

                                                                                                                    ~n s
                                                                                                                        )

SENIOR VICE PRES ELECTRIC OPER ATIO N DIRECTOR OF DIRECTOR OF COAL SUPPLY NUCLEAR FUEL SUPPLY V!CE PRE' POWE R RESOURL.._0. PLANNING & OPERATION MANAGER BULK POWER SUPPLY U i ELECTRIC PRODUCTION ELECTRIC ELECTRIC PRODUCTION SUPT. CONVENTIONAL EQUIPMENT SUPT. NUCLEAR O O

         'O s

i MET. SE NIOR SUP. MECH. INSP. NUCLE AR PLANT ENGINEER FUEL MANAGEMENT

s ENGINEER (WELDING) SUPT. SUPERINTENDENT PHYSICIST R

r5 ;2 (m to o GEN. MECH. MIDL AND OPER ATIO N S Dj Is g- M AINT. SUPV. E NGIN E E R G w vi g b

 ;                                                                NUCLEAR R     OR FUELS ENGINEER          ENGINEER

CONSUMERS POWER COMPANY MIDLAND PLANT Organization Plant Supe rintendent I a Assistant Plant Superintendent I l Plant , Tec hnic al 1 . Maintenance Enginee r Eng_inee r 3 I a i g

Re actor Chemical Radiation Instrument & Gene ral , Shift

                                                                                                                    '4                               Supe rviso rs g        !                 !          Engineer       Enginee r      Pr atection             Control             Enginee r s Su ervis r             Engine e r

Tto Electrical Mec hanical I

! y Supervisor Supe r viso r i Gene ral ! Tec hnician, Control Technicians -- Ope rator e - Engineer

~~

l

l g Electrical Mechanical Technician Clerks -

Auxiliary g Repalronen It epairmesi ~ l Ope rato r s J

  %b
  .jj         Jan to r s Relief Shift                 Combination Supe r vi so r '         **      Relief                         .

g Ope ratgr o Plant k ce Stockman Utility Men p v p nj p r+

Precritical AEC License Total Plant Personnel (80) p N tm j LM O **Posteritical AEC License -

Na H os V1 Wu 9/24/69 R I1D TV

es i 15.6.1.2.1 Shift Supervisor ( The Shift Supervisor is in charge of the operating personnel assigned to his shift and, while on duty, is in direct charge of the plant operation. He is responsible to the Assistant Plant Superintendent and Plant Superintendent for the safe and efficient operation of the plant. In addition to control operators No. 1 and No. 2, the auxiliary operator and utility operators are under his direct supervision. The Shift Supervisor has charge of all other personnel while they are involved with plant operating systems. The Shift Supervisor has the prercgative to initiate i==ediate emergency action based upon his judgment. 15 6.1.2.2 Technical Engineer The Technical Engineer, under general supervision of the Plant Superintendent, is in direct charge of the plant technical staff including the Reactor "ngi-neer, Instrument and Control Engineer, Radiation Protection Supervir.. td Chemical Engineer. He is responsible for the initiation and supw of the Technical activities and progra s required to support the safe -peration of the facility. The Reactor Engineer, under the general supervision of the Technical Engineer, vill provide technical assistance to the Shift Supervisor with respect to the reactor core to insure safe and efficient operation of the reactor. 15 6.1.2 3 Che=ical Engineer The Chemical Engineer, under the general supervision of the Technical Engi-p( neer, is in charge of the operation of the radiochemical laboratory, counting V; roo=, and maintenance of all water chemistry. He is responsible for providing general supervision, to the Shift Supervisor, concerning operation of all de=ineralizer systems, liquid vaste disposal and gaseous vaste disposal. 15.6.1.2.h Radiation Protection Supervisor The Radiation Protection Supervisor, under the general supervision of the Technical. Engineer, is responsible for the direct supervision of the chemical and radiation protection technicians assigned to him and the on-site and off-site radiation detection and environ = ental programs. 15 6.1.2 5 Instrument and Control Engineer The Instrument and Control Engineer, under the general supervision of the Technical Engineer, is responsible for the direct supervision of instru=ent and control technicians and proper taintenance and calibration of all instru-cents on the site. The Mechanical and Electrical Maintenance Supertisors, under the general supervision of the Plant Maintenance Superintendent, are 4 directly responsible for the maintenance and repair of all plant equipment, . building and grounds. 15.6.1.2.6 - Senior Engineer and General Engineers The- Senior Engineer and General Engineers, under the general supervision of f the Plant Superintendent, serve as the plant test group and provide additional f(\s /- technical depth to the plant organization. 15-28 GOOW A=end=ent No. 5 11/3/69

      '-'S    15.6.1.2 7           Plant Maintenance Engineer
       ,,)

The Plant Maintenance Engineer is -esponsible for all plant maintenance, in-cluding preventative taintenance, =aintenance records and surveillance pro-grams. He reports directly to the Assistant Plant Superintendent. 15.6.1 3 Qualifications of Supervisory and Professional Plant Staff Personnel Qualifications vi .h regard to educational background and experience of super-visory and professional personnel on the plant staff:

a. Minimum qualifications of the supervisory and professional personnel on the plant staff shall be in accordance with Section 4 of the Pro-posed Standard for Selection and Training of Personnel for Nuclear Power Plants, prepared by the ANS-3 Co==1ttee, Draft No. 9, dated 7-3-69 or any subsequent approved revision.

15 6.1.h Conduct of Operations The following requirements are in addition to the applicable regulations pur-suant to Section 50 5h (m) of 10 CFR 50:

a. Two operators, at least one of whot is a licensed reactor operator, shall be in the control room during start-up and shutdown of the reac-tor and during recovery from trips caused by transients or emergencies.

b

b. A licensed senior reactor operator shall be on site at all times fuel

is in the reactor vessel. NY

c. A licensed senior reactor operator or an engineer qualified in reactor

, physics shall be in the control room during critical approaches.

d. Normal shift complement for two operating reactors shall consist of seven persons, including one l' censed senior reacter operator and three licensed reactor operat, ,.

e. A minimum crew co=plement for one operating reactor shall consist of five persons, including one licensed senior reactor operator and two licensed reactor operators.

, f. In the event the only licensed operator on the crew is the Shift 4 Superviscr, and fuel-is in the vessel, a second Supervisor shall be assigned to the shift and the licensed Supervisor shall re=ain in the control room. 15 6.2 REVIEW AND AUDIT 15 6.2.1 Plant Review Co=rittee

a. Membership The Plant Review Co==ittee vill be composed o# technical supervisors assigned to the plant and responsible for all phases of daily

   - (O Ix/

15-29 OON8 Amendment No. 5 11/3/69 g y e- e -r, w ww v c--+ ,

operation. A quoru: shall consist of the Plant Superintendent or (Os / the Assistant Plant Superintendent acting as chair =an and any three of those listed below: Assistant Plant Superintendent (If Not Acting Chair =an) Technical Engineer Chemical Engineer Radiation Protection Supervisor Reactor Engineer Instrument and Control Engineer Senior or General Engineer

b. Responsibilities ,

(1) Meet as required, but not less than once each conth to review all aspects of plant safety. (2) To =ake reco==endations concerning plant safety as it finds appropriate. (3) Review au facility ch.mges. (4) Review violation, if any, of the Technical Specifications and place in the plant records the results of this review and final disposition. [x (5) Review all unusual operating incidents.

    \      /

(6) Trans=it written minutes of all meetings to the Electrical Production Superintendent .;1 ear for review (General Office Staff). (7) Review of changes to operating procedures for safety considerations.

c. Qualifications The minimum qualifications for members of the Plant Review Co==ittee shall be as specified under 15.6.13 except for the Senior or General Engineers which are not covered under this section. Minitu= quali-fications for these engineers shall be two years of power plant experience including at least one year of nuclear power plant ex-perience, plus an engineering or scientific degree nomally asso-

, ciated with the power industry. 15.6.2.2 Safety Review and Audit Board

a. Membership (1) Chaiman, Electric Production Superintendent - Nuclear or designated alternate.

U;-m 000a 15-30 Amendment No. 5 n/3/69 m

                                                                                            -em- y

(2) Four technically qualified persons who are te=bers of the V General Office Nuclear Operations staff. (3) Two '.sersons who are =e=bers of the Engineering Department,. (h) Plant Superintendent of Midland Plant or his designee.

b. A quoru= shall consist of the chair =an or vice chair =an, plus four

                      =e=bers, one of which is not a =e=ber of the General Office Nuclear Operations group.

c. Meeting frequency shall be as determined by the chair:an but not less than three times per year.

d. Responsibilities (1) Review all unusual operating incidents' reports.

(2) Reviev =inutes of teetings of the Plant Review Co==ittee to determine if =atters considered by the Cc==1ttee involve unre-viewed or unresolved safety questions. (3) Review proposed changes to equipment, syste=s or procedures having safety significance or which =ay constitute "an unre-solved safety question" pursuant to 10 CFR 50 59 . (G - (4) Conduct periodic audits of plant operation. (5) Review and investigate all reported instances of violations of Technical Specifications or Plant Operating Procedures. (6) Record and transmit minutes of all =eetings to the Vice Presi-dent, the Manager of Balk Power Supply, and the Midland Plant Superintendent. (7) To =ake such reco==endations concerning plant safety P.s it finds appropriate to the Vice President, che Manager of Bulk Power Supply, and the Midland Superintendent.

e. Qualifications The =inimu= qualifications for =e=bers of the Safety Review and Audit Scard shall be an engineering graduate er equivalent with at least two years ' experience in ene or =cre of the areas including nuclear plant operation, reactor physics, ther=al hydraulics, che=1stry and radiation prctection, waste disposal, retallurgy, fuel design, and manage =ent, system design or other similar nuclear experience.

15.6 3 ACTION TO EE TAFE IF A SAFEIT LIMIT I3 EXCEEDED

a. If a safety li=it is violated, the reactor shall be shut down and operation. not resu=ed until a thorough evaluation of the incident

                    -has been conducted.

l 15-31 00060 A=end=ent No. ; 11/3/69

O b. An i==ediate report of the incident shall be made to the Electric ( Production Superintendent - Nuclear and a complete review of the circumstances undertaken by the Plant Review Co==ittee. The report and the Cc=tittee 's reco=endations shall be submitted to the Chair-ran of the Safety Review and Audit Board (the Electric Production Superintendent - Nuclear). The reco== ended action shall be reviewed with the AEC. 15.6.4 ACTION TO BE TAKEN IF A MAXMM REACTOR PROTECTIVE SYSTEM SETTING IS EXCEEDED

a. If a maximu= reactor protective system setting should be violated, the incident shall be acted upon in accordance with the procedure outlined in Section 15 6.2 (Review and Audit).

b. The results of the review actions taken and conclusions reached shall be recorded by the licensee and maintained as grt of his per=anent records.

15.6 5 ACTION TO BE TAKEN IF A LIMITING CONDITION FOR OPERATION IS VIDIATED

a. If a limiting condition for operation should be violated, action shall be taken in accordance with the applicable specificatien stated in Section 3

b. The cut-of-specifications condition shall be remedied as soon as possible.

49

c. The incident shall be reviewed by the Plant Review Co==ittee and acted upon as provided in Section 15.6.2.

d. The results of the review, actions taken and conclusions reached shall be recorded by the licensee and maintained as a part of his remanent records.

15.6.6 - ACTION TO BE TAKEN PRIOR TO FACILITY CHANGES OR SPECIAL TESTS

a. Witten procedures shall be prepared, reviewed and issued prior to the initiation of each special test involving the operation of the NSS. These procedures shall provide the info:=ation for perfoming each test, detailed to the extent appropriate, according to the outline as follows:

(1) The objective of each particular test. (2) The step-by-step operational method for the test including specific terminal aspects of the test. (3) The expected response of the syste= within which the test is being conducted. The course of action to be taken in the event that an abnor=al response occurs during the test vill be defined. The responsible individual having authority to direct the con-(g)

 '(\,j tinuance or termination of a particular test will be specified.

15-32 ' 00im"4 - Amendment No. 5 11/3/69

I l 6 I I l

    %                    (h) In addition to the details ecvered above in this cutline, there g      .

vill be inst uctive infernation provided with any special equip-cent that may be employed in the course cf testing.

b. Each special test shall be reviewed and appro red by the Plant Super-intendent er Assistant Plant Superintendent a::d the Electric Produc-tien Superintendent - Nuclear pricr to the execution of the test.

Approval shall be based upon a determination that the test does not ec promise the operation safet,y of the plant and does not involve a change in the Technical Specificatient or an "unreviewed safety question."

c. Facility changes of a minor nature which do not affect nuclear safety shall be permitted after written approval of the Plant Superintendent.

Major facility changes shall be reviewed by the Safety Review and Audit Scard and approved by the Electric Production Superintendent - Nuclear prior to imple=entation.

d. If it is deter =ined that a test or facility change does involve a change in the Technical Specifications or an "unreviewed safety questien," a request for approval shan be sub=itted to the AEC.

Pricr to the initiation of such a test or change, approval shall be received from the AEC. 15 6.7 FIANT AIEINISTPATIVE PROCEIXTiiES '73 a. The nor=al start-up, cperation, shutdevn, a d refueling procedures ( V) of cajor plant eccpenents and systers shan be prepared by the Plant Operating Staff and reviewed by the Plant Review C H ttee. Current issues of these procedures shall be available to plant operating . persencel at a n times.

b. Emergency procedures shall be written and maintained by the Plant Technical-Staff to direct the course cf action for the cperater to fcliev in the event of specific plant sys'a- -a' " ctions, reactivity faults and/cr =ajor release of radicactive =aterials to the centain-

                       =ent or environs. These procedures shall be reviewed by the Plant Review Cc=ittee and audited by the Electric Production                        ',

Superintendent - Nuclear er his staff.

c. All procedures, and revisions to same, described in a and b above, shan be approved by the Plant Superintendent or the Assistant Plant Superintendent prier to i=plementation. Reasons for any changes that are implemented to thece procedures shall be documented in plant records.

15 6.8 PADICICGICAL CONTROIS

a. Written infer:ation shall be prepared and naintained for all plant personnel regarding (1) permissible radiatien exposure limits and (2) procedures for centrol of radiation exposure.

\ ~- 15-33 f)O~ OP" - Arend:ent No. 5 n/3/69 m

m O_ L'

b. An emergency p .n shall be prepared and =aintained to guide the ac-tivities of personnel on the plant site and the Dow Che=ical Cc=pany personnel in the event of a caj: r R1 ease of radioactive caterials.

c. The radiation protection controls are intended to meet the require-ments of 10 CFR 20 with the following exceptions:

(1) Paragraph 20.103 - Ecposure of individuals to concentratiens of radioactive materials in restricted area. Allowance can be made for the use of respiratory protective equip =ent in conjunction with activities authorized by the operating license for this plant in determining whether indi-viduals in restricted areas are exposed to concentrations in excess of the limits specified in Appendix B, Table 1, Colu=n 1 of 10 CFR 20, subject to the following conditions and limitations: (a) The individual uses respiratory or other appropriate protective equipment such that the total intake, in any period of seven consecutive days by inhalation, inges-tion or absorption, would not exceed that intake which would result from breathing the concentrations specified in Appendix B, Table 1, Colu=n 1 of 10 CFR 20 for a period of h0 hours. (b) Each respirator user shall be advised that he may leave the area for relief frc= respirator use in case of equip- )f ]

 ,V
      !                        ment =alfunction, physical or psychological discomfort, or any other condition that might cause reduction in the pro-tection afforded the wearer.

(c) A respiratory protection progra=, adequate to assure that the objective of Ites (a) above, is met, shall be maintained. (d) Protection factors shall not be assigned in excess of those given in Table 15-6. 15.6 9 PIANT OPERATING RECORDS The following records shall be maintained and filed in a canner convenient for review:

a. Records of plant operation including:

(1) Power levels. (2) ' Operator aetions. (3) E=ergency shutdowns and trips. (4) Routine pertinent data regarding system operation. g (5) Reactor tests and measurements. l I 'V 15-3'4 Amendment No. 5 11/3/69

O b. Records of principal =aintenance activities. V

c. Reccris concerning radiation protection activities including:

(1) Routine plant radiation and centa=ination surveys. (2) Environ = ental =cnitoring surveys. (3) Radiation expcsure for all plant personnel, centractors and visitors to the plant who enter the centro 11ed areas. (h) Radicactivity levels in liquid and gasecus vastes released to the enviren=ent.

d. Records of verification of surveillance standards as required in Section h including periodic checks, inspections and/or calibratien perfor=ed and any corrective action taken,

e. All reviews, including actions taken and reasons therefor, required in Sections 15.6.1, 15.6.2, 15.6 3, 15 6.h, 15 6.5, 15.6.6 and 15 6.7 of this specification.

15.6.10 ROUTINE OPERATING REPORTS In addition to reports otherwise required under chis license and applicable regulations: .h j a. Consu=ers shall =ake an i==ediate report in writing to the Co. ission of any indication er occurrence of a possible unsafe condition re-lating to the operation of the facility, including, without i= plied li=itation, any possible unsafe condition arising out of: (1) Any substantial variance disclosed by operation of the facility frc= the perfer:ance specifications set forth in the Safety Hacards Analysis S m ry Repcrt, and (2) Any accidental release of radicactivity,: whether or not result-ing in property dr..= age er personal injury or exposure above pe missible li=its.

b. Censu=ers shall report to the Cc==ission in vriting significant changes in plant organication, and transient or accident analysis, as described 'in the Safety Analysis Report.

c. Consu=ers shall sub=it to the Centission, at least se=iannually, a written report of operating experience including:

(1) A'brief explanation of the cause cf each unplanned shutdovn of the reacter.

                   .(2) The a=ount of radioactivity =aterial re=oved fro = the reactor by release, discharge, and ship:ents of radicactive vaste I:sterial.

Q(

%J I

15-35 0009'/1 " Amend =ent No. 5 11/3/69

              -(3) The levels of radioactivity in the principal fluid syster.

(k) A description of changes, tests, and experi=ents perfomed pursuant to Paragraph 50 59 (a) cf the Cc =ission's Rules and Regulations. \ I- (5) A description of the principal caintenance perfer=ed on the {. facility. ! '(6) A su=ary of reactor operatien performed during the period j including an explanation of =alfunctions of any equipment 4 important to safety and periodic testing perfo=ed as re-quired in the Technical Specifications. Such reports shall be due within 60 days after the end of each reporting period. lI, 1 f ? 1 I, f f l t i i i 1 i t i 7 t, 15-36 00095 Amend =ent no. 5 11/3/69 - e

Table 15-6 [n\ Protection Factors for Respirators (2) Protection Factors (3)Particulates, Vapors and Gases Tritium Description [y) Modes Except Tritium Oxide Oxide I. Air-Purifying Respirators Facepiece, Half Mask 10 1 Facepiece, Full 100 1 II. Atmosphere-Supplying Respirator A. Air Line Respirator Facepiece, Half Mask T 100 2 Facepiece, Half Mask D 100 2 Facepiece, Full CF 1000 2 Facepiece, Full D 500 2 Facepiece, Full PD 1000 2 Hood CF 1000 2 Suit CF (4) (h) B. Self-Contained Breathing b' Apparatus (SCBA) Facepiece, Full D 500 2 Facepiece, Full PD 1000 2 Facepiece, Full R 1000 2 C. Combination Respirator Any combination of air-purifying and Protection factor for type atmosphere-supplying respirator. and mode of operation as listed above. T: Continuous Flow D: Demand PD: Pressure De=and (ie, Always Positive Pressure) R: Recirculating (2)(a) For purposes of this authorization, the protection factor is a =easure of the degree of protection afforded by a respirator, defined as the ratio of the concentration of airborne radioactive cr.terial outside the respiratory protective equipment to that'inside the equipment (usually ' n' ' w, 15-37 000%; ' Amend =ent No. 5 11/3/69-

inside the facepiece) under cenditiens of use. It is applied to the

               --            eirborne ccncentration to da+a

a 'ka concentration inhaled by the wearer, acecrding to the follcwing fc = ula:

Concentratic: In. naled = Airbcrne

                                                                          -       Ccncentraticn rrctectica r,acter (b) The prctecticn facters apply:

(1) Cnly for individually fitted respiratcrs worn by trained individuals and used and naintained under supervisien in a well-rlanned respiratory prctecticn pregram. (ii) For air-purifying respirators Only vi:en high efficiency particulate filters and/or sorbents appropriate to the hazard are used. (iii) Fcr at=csphere-supplying respirators only when supplied with adequate respirable air. (3)F.xcluding radicactive centaminants that present an abscrptien er suttersion hazard. (h) Appropriate protectica facters cust be determined taking account of the < per:eability cf the suit to the conta inant under ecnditiens of use. No prctectica facter greater than 1CCO shall be used except as authorized by the Cc==1ssien. Note 1: Prctection factors for respirators as nay be approved in the future by the US Bureau of Mines according to approval schedules for respi-rators to protect against airborne radienuclides nay be used in lieu cf the protection facters listed in this table. 'Where additicnal respiratory hazards cther than radicactive enes are present, es-pecially these in=ediately dangercus to life, the selection and use of respirators shall also be governed by the approvals cf the US Eureau of Mines in accordance with their applicable schedules. Note 2: ?.adicactive centaritants for which the concentration values in Appendix E, Table 1 of 10 CFR Part 20, are based en internal dose due to inhalation nay, in addition, present external expcsure hazards at higher concentraticns.

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\- /      cxial stability to finite dimensicns and in XY to determine the acicuthal characteristics of the core which can then be cc= pared to the results Of the three-dimensional analysis. Thus, the objective of this phase cf the progra:

is to relate the digital analysis to the co 'al analysis. The reference acre will be analyced in a three-dimensional digital analysis with nuclear-thermal feedback. The results of the one- and two-dimensional digital analyses will be filed as a topical report in the fourth quarter of 1969 and the results of the three-dimensional digital analyses will be filed in the first quarter of 1970. Thus, the entire program is scheduled for ec=pletion well before the scheduled start-up of yddland Plant, Unit 1.

h. Since the stability of the core is an cperational proble=, the ac captance criteria of the ELD progra: are not so detailed or confining in that the ultimate ai= cf the progra: is to design a syste capable of meeting required power production under specified conditions. The period of oscillation of xenon induced spatial instabilities is long, 25 to 30 hours. Therefore, it can be thwarted or controlled by operator action using predetermined rod manipulations as has been indicated in the PSAR.

p ( ) In sn--ary, the xenon oscillation R&D progra: is aimed at establishing xs the stability characteristics of the core and demonstrating, if necessary, that, in the event of instability, adequate control syste=s can be e= ployed to assure the desired operation of the plant.

3. The =al and Hydraulic Prczrams Paragraph 3 3 2 provides a discussion of the Thermal and Eydraulic Tests. The initial core power level is justifiable on the basis of the well- -

known W-3 DNB correlation. Using the W-3 correlation, the caly informatica required for licensing at the design core power level is that obtained frc= the reactor vessel =cdel flow tests in which a 1/6-scale =odel of the vessel and internals was used to =easure the flow distribution to the cort,. fluid =ixing in the vessel and core, and the distribution of pressure drop within the reactor vessel. All of the tests relating to the safety analysis, maximu= design power rating, and fabrication of reactor internals have been satisfactorily ec=pleted. Test data analysis and docu=entation were conducted and a final report was sub-citted as Proprietary Topical Repcrt BAW-10012, " Reactor Vessel Model Flcw Tests." This verk is cc=plete and substantiates the design presented; therefore,

   ' 'N   no design alternates are considered necessary.        n

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[\ ,/} Erittle failure - clad spe:i= ens heated to 13C0 ? and quenched in roc = terperature water did not experience brittle failure. A reductica in ductility cccurred but the strength was not reduced. Werk in this area is cc=plete. Clad swelling - single rod tests have been run to investigate the effect en clad swelling of the heatup rate, internal pressure, hydriding of the lirealoy, internal pressure and precxidation cf the clad. Results to date indicate that:

1. The low-pressure test produced bigger swelling er a larger in-crease in disceter due to greater ductility at higher te=perature.

2. The lover heat rates, in general, prcduced bigger swelling.

3 The hydregen content see=s to play no =ajor role in the a= cunt ;f diacetral swelling.

4. The preexidation generally resulted in less swelling; thus, it was decided to delete the syste=atic study of preoxidaticn effects on swelling.

5 The perforatiens were rande=ly located on the clad.

6. The failure time base is extre=ely short.

I 7-s 7 First point of swelling was not necessarily the ene which ruptured

  \v     I     or swelled the largest.

Multirod experiments are planned using oven heating. A 4 x 4 rod bundle vill be heated in an oven, with the four central reds pressurized. Analytical Progra= The analytical program is in the planning stage at the present time. The ther=al models will evaluate the axial as well as the radial temperature distribution. The gap heat transfer considers the change in pressure of the gap gas, the gap spacing, and the heat transfer by radiation. The change in flow channel resistance to flov is calculated and incorporated into the ccannel analysis. r In view of the favorable results of the tests already performed by S&W, and similar results fran independent tests,* the completica of B&W's current pro-gram is expected to provide further confir=ation that ecclant channel restrictions due to clad swelling vill not limit ECCS effectiveness. Cc=pletion of the present progra= is expected in late 1969 which is sufficiently in advance of the scheduled Flidland Plant Unit 1 start-up.

h. The program was designed on the basis that the najor unkncvn was

       ~s the a= cunt and location of blockage that could result frc= the clad defer =aticn I

s

Q ,/

APED 5h79, "Fael Red Failures During Siralated(Lohskc$.C,

                                                                    > ~ -  .

oclant Conditions." 1.1-4 A=end=ent Iio. 5 11/3/@

b) (j in an IOCA. The pe,rameters included in the single pin experimental est are all of these of primary i=portance with respect to the extent of : lac perfora-ticas and the mode of clad failure. Ihe =ulti-pin test will prcvide the data to deter =ine the pcssible interaction between pins undergoing a te=peraturt excursion. With these datt. available, an analysis of the capability 'f the ICCS to function as designed will be verified. D. High Burnup Fuel Tests The results of the "High Burcup Fuel Tests" are not needed to ec=plete the safety evaluation for Midland Plant. The pri=ary purpose of the High Burnup Prog ~= is to de custrate the capability of the fuel design for future operation at higher ?cwer levels and to deter =ine the swelling rate of UO2 as a function of burnup u.* cg fuel rods of the same design as the core in order to advance the state of the art. In addition to deter =ining the swelling rate, the effect ,f several other variables, including the density, heat rate, c]sdding restraint and the resulting clad strain, will be investigated. The safe design of the yddland Plant fuel rod is adequately de=ctstrnted [ )) by the caterial presented in Paragraph 3 2.4.2.2 of the PEAR. Thus, this program is not required to substantiate the design of Midland and has been deleted frc= Section 1 5 E. Internals Vent Valves

1. The internals vent valves are provided to equalize the pressure across the core support shield, thus, preventing the depressica of the water level in the core following an IOCA due to a cold leg break.

The vent valves =ust be designed so that they will be open at a low-pressure differential in order to provide stea= relief. At the same time, the valves must not accidentally open under expected cperating conditions since this would result in coolant bypassing the core.

2. In order to assure that a satisfactory vent valve design had been developed, the following tests were perfor=ed:

a. An ASME Section III hydrostatic test was included to verify the structural adequacy of the vent valve asse=bly and counting design at the maximum design pressure expected to result during the II)CA.

b. A valve disc closing test at zero pressure was included to de-t

(x ter=ine the frictional load characteristics of the disc and hinge assembly. These

  'N_-) test results will be used to establish reference =echanical li=its for remote l

tool =anual exercising of the valve dise during refueling cutages. 1.1-5 g'g g' ' A=end=ent No. 5 11/3/69

c. Tests were included Oc determine and verify the pressure dif-ferentials required to begin to open the valve disc and to =aintain the valve disc in the maxi =um cpen position.

d. A functional handling test is included to judge the adequacy of the re=cte handling equipment provided for re=cte re=cval cf a vent valve at refueling outages shculd it becc=e necessary to install a spare valve,

e. A vibration of a prototype vent valve is included to verify that the valve disc vill not leave its seat or move relative to the seat during nor=al reactor Operation. The results of this test vill be used to verify the findings nnd conclusions deter =ined by analysis.

f. Tests of prototype valves in a 1/6-scale =cdel of the reactor vessel and internals to verify that a positive closing force is exerted on the ,

valve during nor=al operation and to determine the a= cunt of the total flow which would bypas; the core during normal operation if a vent valve were fally open. 3 The test progra= has been co=pleted and de=custrated that the vent valve design vill perform adequately during both nor=al operating and accident I _s '

conditions. The results of the tests on the full-sized valves are repcrted in 'd \ Proprietary Topical Report BAW-10005, " Internals Vent Valve Evaluation." The result of the tests on the prototype valves are reported in Proprietery Topical Report EAW-10012, " Reactor Vessel Model Flow Tests."

h. This work is ec=plete and substantiates the design presented; therefore, no design alternates are considered necessary.

F. Control Rod Drive Line Test

1. The operational and life testing of the roller nut contrcl rod drive =echanism was conducted in order to verify that:

a. The trip time of the =echanis: =eets the design require =ents for a safe and orderly shuticvn en a ec=plete loss of pcVer to the plant, ie, the loss of the four primary coolant pu=ps.

b. The =aterials utiliced in the construction of the =echanis=

are ec=patible with the primary coolant che=istry to insure the structural ade-quacy of the =echanism.

c. The wear characteristics of the ec=ponent parts of the =echan-1s= are satisfactory for the operational require =ents.

The drive test progra= vas conducted in an autoclave under reacter D)

\/
 ~

operating conditions of temperature, pressure, flew and water chemistry. In 1.1-6 00mv. A=ena=ent no. 3 11/3/69

additien, the guidance syste= vas establiched with cc=ponents which duplicate (%n) the guidance in the reacter thrcugh the full strcke of the =echan12=, ie, with a prototype fael asse=bly and with a prototype upper control red guide c.sce=bly.

2. The felleving information, which was cbtained frc= the cperaticnal and life tests of the =echanis=, was considered in the safety evaluation cf the mechanis=:

a. The trip ti=e of the cechanis= associated with the 100 percent maxi =u= internals =isalign=ent conditions of the drrie I N .

b. The degree of wear exhibited by ec=ponents of the mechanisms after life testing in accordance with the progra defined in Paragraph 3 3 3.L 1 of the PSAR.

3 The successful ec=pletica of the lifu tects and the fact that the roller nut drive is a proven rechanis= successfully used in other reactcrs pro-vides adequate proof that the drive design more than =eets the require =ents fer this application. A description of the test program and its results are reported in Topical Report PJN-10007, " Control Rod Erive Syste= Test Progra=." G. Cnce Through Stea= Generator Tests ( 1. The ability of the once-through steam generator (OTSG) to caintain its structural and physical integrity under nor=al and accident canditions has a significant effect en the potential release of fission products for the LOCA as well as the stea= line break accident. Coincidental failure of the steam gen-erator tubes following an IOCA as a result Of the rapid depressurization would result in reactor building pressures and temperatures above those nor= ally con-sidered in LOCA analysis.

2. The following general criteria guided the overall F&D progra= for the steam generator which has been ec=pleted:

a. To confir= analytical heat transfer and hydraulic perfor=ance characteristics of a steam generater utilizin6 the cace-through principle to prc-vide slightly superheated steam while using a pressurized water reactor as the heat source,

b. To provide sufficient data to per=it development of a ecntrol syste= which is cc=patible with the once-thrcugh stea= generator concept.

c. To investigate the various safety =atters pertinent to the ence-through steam generator design having a straight tube configuratica and to A

de=custrate that no significant safety prcblems exist due to the unique design of (v) this generator. 1.1-7 i} " "P it;

                                                                '      Acend=ent :To. 5 11/3/69

______ _ m_ _ . ._ . _ _ . . _ - __ l l' , I i i 3 'Ihe areas of concern and investigation which made up this pro- t gram are as follows: 1

a. The steady stata and transient operation tests to confir= ;

! the analytically predicted performance characteristics of the stea= generator l and to provide a =eans for developing a satisfactory centrol sche =e.

b. Feedwater spray nos:le tests to de=onstrate that the design I arrangement will heat the feedvater in a satisfactory =anner.

! c. Tube leak simulation tests to demonstrate that a leak in one i i tube vill not be propagated by causing a failure in adjacent tubes. i

d. Mechanical tests to demonstrate that the tubes can withstand, ;

without failure, the mechanical loads they =ay experience either during noz=al operation or accident condition, including pri=ary side blowdown.

e. Vibration testing to demonstrate that the unit contains no vndesirable resonance characteristics.

f. Tests to be conducted to simulate a steam line failure or a reactor coolant system failure to de=enstrate that the unit will remain intact -

under conditions of rapid depressurization and large te=perature differentials between the tubes and the shell. i The program has been completed and the results of the investigation are reported in Proprietary Topical Report BAW-10002, "Once-Through Steam Generator Research and Development Report." f k. This work is complete and substantiates the design presented; 4

- therefore, no design alternates are considered necessary.

4 H. Self-Powered Detector Tests

1. The self-powered detector tests consisted of qualification testing with sufficient longevity to insure that both neutron flux and power infor=ation v can.be reliably =easured.

i The self-powered detectors are not employed in any direct safety actions. Knowledge derived from these detectors vill be used to provide flux and power dis-tribution data for the operator and the fuel management program.

2. The acceptance criteria for the self-powered detectors are to measure neutron flux with a relative accuracy of 10 percent in a PWR environment over a three-year time span.

3 The program has deconstrated that the self-powered detector =eets

the acceptance criteria. The results of the tests are reported in Topical Report

EAW-lOOO1, "In-Core Instrumentation-Test Program."

1.1-8 Oh ~ '~'ir=3 Amendment No. 5 11/3/69

km ,S) 6 This work is cc=plete and substantiates the lesign presente:, therefore no design alternates are considered necessary. I. 31cvicvn Fcrees on Internals

1. The reactor internals cust be capable of withstanding the blsv-

, dcvn fcrees to which they vill be subjected during a less-cf-ccciant accident to assure that the flev cf e=ergence ecolant : the ccre vill not te i= paired.

2. Icads during the saturated and subeccled phases of the bicvdcyn following a loss-of-ccolant accident =ust be deter =ined and the valliity of the

        =cdels uced to determine the suct be verified. The stresces in and deflecticas of the internals cc=ponents =ust be shown to be within allevable limits when subjected to the ICCA leads.

3 The vark to det ermine the IOCA ivota and to verify the =cdel used in their determination has been ec=pleted. The stresses in and deflecticns of the internals cc=ponents of a unit with si=ilar internals cc=penents subjected to loss-of-coolant accident and =axi=u hypothetical earthquake loads were deter =ined to be within allovable limits. The results of this verk are repcrted in Tcpical Report EAW-10008, Part 1, "Reacter Internals Stress and Deflectica Due to Losc-of-Coolant Accident and Maxi =u= Hypcthetical Earthquake." '

\/

4. Since the design of the internals cc=penents is deter =ined pri-

        =arily by LOCA leadings and only the seis=ic 1cadings for the Midland Plant inter-nals ec=penents vill be different frc= these reported in Tcpical Eeport BAW-100C8, no alternatives are considered necessary.

J. Iodine Re=cval Spray

1. In crder to keep doses below 10 CFR 100 limits, folleving an MEA, it is recessary to re=ove radicactive iodine frc= the reactor building atmosphere.

2. R&D programs were eccducted by B&W and others to provide infor-tation as follows:

Spray Sclutien Stability

a. Storage - The stability of the alkaline sodiu thiosulfate spray solution =ust be such that sufficient quantities are available following an accident. Storage stabilit' tests were therefore required to evaluate solution decceposition versus time for expected storage conditions.

b. Accident Cccditions - Thermal and radiation stability data obtained frc= tests under accident conditions were needed to deter =ine if ade-s quate quantities of alkaline sodiu= thicsulfate spray solution vill be available (v) when needed folleving the LOCA.

1.1-9 qp a ' A=endment No. 5 11/3/69

Icdine Retentien Ca= ability Tests under accident conditions were required to de=cnstrate that the absorbed iodine vill not be reevolved. yaterials Cc=patibility It was necessary to de=custrate that the =aterials in contact with the spray solutien and vapor vould not corrode to the extent that the safety protec-tica equipment integrity is cc=prc=ised. Inscluble corrosica products =ust cet be fomed to the extent that they prevent the satisfactory operation of the engineered safety syste=s. 'nnere required, protective coatings =ust be preven to be ec=patible with the spray solution under accident conditions. Spray Effectiveness Ihe ability of the spray solution to absorb iodine at the required rate =ust be de=onstrated. Iodine re= oval =echanis=s =ust be understccd. ] 3 I:&W has co=pleted a proprietary R&D progra=, and cre:f., and Battelle I Northwest are carrying out progra=s which have assured that the necessary infor-

   =ation vill be provided. Extensive data is available today for the design of an adequate ahlaline sodiu= thiosulfate spray syste=. The B&W R&D progra= re-sults are reported in the proprietary Topical Report BAW-10017, "Research and Development Report in the Stability and Cc=patibility of Sodium Thiosulfate Spray Solutions," which was recently sub=1tted to the AEC. The ORNL and ENWL data are reported in bi=onthly, semi-annual and annual reports issued by the respective organizations. The results of these progra=s are su==arized below.

Spray Solution Stability

a. Storage - Several hundred tests, so=e run for as long as approxi=ately one year, indicate that deco = position of the sodiu= thiosulfate is very small and = ore than adequate quantities of sodiu= thiosulfate vill be available,

b. Accident Conditions - Static and dyna =ic themal stability tests indicate that the loss of iodine absorption capacity vill be such that

   = ore than an adequate supply of sodiu= thiosulfate vill be available for a long period of time (several =enths). Radiation stability test results show that even after periods greater than three r.anths, = ore than adequate a= cunts of sodiu= thiusulfate vill be available when needed following an accident. In these tests using the design solution, no solid products and no sulfar or O sulfide ion was detected.
 \

O O P R' A=end=ent No. 6 i 1.1-10 12/26/69 i

   \-                 Icdine Eetentien Capability Test results indicate that under predicted accident conditiens all absorbed iodine vill be retained.

Paterials Oc=patibility Tests were run to deter =ine the effect Of =aterials en the alkaline thiosulfate solution, the corrosien rate of =aterials exposed to the sclution and attack en protective ccatings exposed to the solution. The ceasured cor-rosion rates and the resistance of the protective coatings indicate that ec=po-nents vill successfully withstand the alkaline thicsulfate sclution. Alsc, the test results indicate that the =aterials tested do net cause excessive sodiu= thiosulfate decc= position er have any other harmful effect on the solution. Spray Effectiveness Spray effectiveness tests have been and are continuing to be carried cut at ORNL and BNWL. This verk includes the study of spray droplet coales-cence, liquid phase mass transfer resistance, spray droplet size nenunifor=ity and the effect of che=ical additives such as sodiu= thiosulfate. The ability _ to scale over a vide range of containment sizes has been de=cnstrated by CENL vhere a calculational technique was used to correlate the results of iodine re= oval experi=ents in three different spray facilities ranging in size frc= 200 ft3 to g,700 ft3 ~2e calculated iodine re= oval rate was usually well within a facter of tyc ;; the ceasured re= oval rates even though the vessel sizes varied by a factor of 150. All of the test results indicate that alkaline sodium thiosulfate sprays will be very effective in re=cving ele = ental iodine at high rates and organic iodides at lower but still significant rates.

4. The lar6e amount of data available to substantiate the perfor-

          =ance of the spray syste=, together with the large =argins available for iodine dose reduction factors cc= pared to 10 CFR 100, preclude the need for ccasidering alternate soluticus.
    /%                                                                                 .
   !    \
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1.1-11 OD~'*4)an Amend =ent No. 5 11/3/69 i

_ _ _ _ _ _ _ _ . _ _ _ ____ _ .-. _ _ __ ._--_._-._ ..__ _ ___. _.___..~-.. _ _ _- ___. - _ _ _ _ . _ _ . _ . . _ _ - . _ - . _ _ _ _ _ _ l i 4 f 4 1 I j 1.2 In various sections of the PSAR, different exclusion radii and low popu- ' l lation zones are identified. To clarify this a=biguity, state the minimum ', exclusien radius and the minimum distance to the outer boundary of the low l population zone. l Ancver: I, The minimum exclusion radius is 500 meters and the minimum distance i to the low population zone (IPZ) outer boundary is 1600 meterc. [

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i N

1.h List those systems which contain an interface between Class 1 and a lover clnss or a transfer of responsibility between the Nuclear Steam System Supplier and A&E. Indicate the location of the interfaces and discuss the manner in which they are considered in the design. Answer: A. Systems which contain an interface between seismic Class 1 and Class 2 design are listed along with the appropriate FSAR figure number which delinesten the location of these interfaces: Reactor Coolant System Fig k-1 Core Flooding System Fig 6-1 Reactor Building Spray System Fig 6 k Makeup and Furification System Fig 9-2 Decay Heat Removal System Fig 9.h Component Cooling Water System Fig 9-8 Service Water System Fig 9-9 26l Auxiliary Feed-Water System Fig 10-2 25l Deleted Reactor Coolant Sampling System Fig 9-11 Main Steam and Feed-Water System Fig 10-1 and 10-2 Those portions of systems or components that form interfaces 27 between Seismic Class 1 and Class 2 features vill be designed to Seismic Class 1 requirements. B. Listed below are the systems which art the design responsibility of the NSS supplier (B&W). For many of these system , the major equipment is furniched by B&W, while piping and valves are furnished by the engineer-constructor (Bechtel). B&W provides design require =ents for equipment which is furnished by Bechtel in these systems.

1. Reactor Coolant System

a. B&W is supplying the reactor and pressurizer vessels, heat exchangers, pumps, pressurizer safety and relief valves, pressurizer spray control valve, the main reactor coolant (28" and 36") piping and all process instrumentation and controls.

b. Bechtel is supplying the pressurizer quench tank and the prescurizer surge and spray piping.

OO @? 1.k-1 Amendment No. 27 8/74

N

2. Makeup and Purification System

a. MW is supplying all system vessels, heat exchangers, pumps, and process instrumentation.

b. Bechtel is supplying all system piping and valves.

3 Eecay Heat Re= oval ard Core Flooding Systems

a. B&W is supplying all system vessels, heat exchangers, pumps, and process instrumentation,

b. Bechtel is supplying all system piping and valves.

k. Chemical Addition System

a. B&W is supplying all system vessels, pumps, and process instrumentation and controls.

b. Bechtel is supplying all system piping and valves.

5 Fuel Handling System

a. B&W 1: supplying the reactor building and fuel pool fuel handling bridges, the fuel transfer mechanism, controls, and various equipment storage racks and handling tools.

b. Bechtel is supplying other equiptent which is used

6. Reactor Building Spray System

a. B&W is supplying all chemical additive vessels, pumps, spray nozzles, and process instrumentation and controls.

b. Bechtel is supplying the BWST, spray pumps, all system piping and valves, and process instrumentation not associated with chemical spray additives.

Interfaces in the reactor coolant system are at nozzles where Bechtel supplied piping connects with B&W supplied vessels and piping and/or supports. Within the remaining systems, interfaces are at the supports and nozzles of pumps, vessels, and heat exchangers. The allowable forces and moments are determined for these equipment interfaces through the coordinated efforts by B&W, the vendors, and Bechtel. The piping is thus designed so that the loads imposed by .it will not exceed those which have been determined to be the maximum allowable. In addition, total forces on the support (s) are determined, considering seismic loadings, to assure that the support (s) vill . accept the loads imposed. O -C. There are.a few other systems for which Bechtel has design and procurement responsibility, but for which some functions and equipment are defined and/or furnished by B&W: 1 '-2

00. E3 ' Amendment No. 5 n/3/69

i i i r t t i i i i l l j 1. Main Stes: Systes ! l l MW is supplying the ain steam safety and turbine by;sss l valves.

2. :tain Feed-Water Syste.a MW is supplying the nain and start-up feed-vster centrol l

valves. and the Integrated Centrol System (ICS) which provides signsis to these valves. i d i l l I le i i . l l i t i i : I P i i ! a i ! + i i i i I t"f(). DM

                                                                     ,ef i

i ' l.k-3 Anendment No. 5 r ! 11/3/69 I i . ) I i.- _ - .-,. -. . ..., i

1 ) ) > t 4 i P 1 i I j 9 15 The Babecek 4 '411cox Ccepany has recently supplied the Cc =ission with several topic:al reports concerning the design and resear.h ar.d develep enc l ) effort asscciated with their pressurized vater reacter product. Specify j vhich of these reports, if any, are to be inccrperated in your applicatic: j by reference. I Answer: I, ! Those reports which are incorporated by reference in the Midland Plant application are identified in the Amendmene No. 5 transmittal letter. I \ l i 3

i, t

1 , ' l h I 6 5 i i l f f

i l 1 I i 0 t P l l 6 e

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i i 1 r , 1 5-1 Aren tent No. 5 f 11/3/e9 l f f I w w w w vs-.= - vm - w- w ww+ - w - v3 _ - - - . . - - - - - - ~ - - -

1.6 Provide your criterion regarding the =axi=u= permissible concentration of radionnelides in the stes= supplied to Dcv. Discuss the types of

               =enitoring systems proposed to detect the maxi =um permissible concentra-tions. Provide the frequency of sampling, type of detector, and detector precision and sensitivity anticipated for sampling measurements of the process steam.

Answer: Consumers Power Company will monitor secondary steam for radioactiv-ity with suitably sensitive =easuring instrumentation. If radioactivity is detected in the steam at the limit of detection by this instrumentation, trans-mitting of this steam to Dow Chemical Company will be discontinued and appro-priate action will be taken to insure that radioactive free steam is supplied. The instrumentation to be used fcr detecting radioactivity in steam will be

highly sensitive to the expected radiations, reliable and continuous. A number of different radioactive nuclides appear in the pri=ary coolant of a PWR. Table I gives data on several isotopes as reported fro =

        =easurements of the primary coolant of three operating PWR. These include the
        =ost abundant ones and those considered to require the strictest control.
   )                 A large fraction of the ga==a radiation measured at short delay r

'# times is due to Nitrogen-13 (10-minute half-life). Because of the short half-life, this isotope has no biological hazard after appreciable decay, time. It is, however, a sensitive tracer for detection of leaks from pri=ary to secondary circuits. From conside"ation of data on operating nuclear power plants and consideration of the instru=entation available, it is our conclusion that the measurement of gross gamma radiation supplies the most sensitive and reliable contir;uous method of =easuring radioactivity in secondary steam. The continuous gamma monitor to be used consists of a sodium iodide crystal detector surrounded by a large volume of liquid sample. Typical of these instruments is the Victoreen Instrument Company Model 6h0-3 off-line effluent detector. Secondary steam condensed to liquid water and cooled to room tempera-ture and at at=cspheric pressure is the sample. A continuous flow of this water sample is passed through a vessel having a volume of about 3 liters. A reentrant well contains- the detector so that the detector-is surrounded by ,~, the sample for:=axi=um measure =ent geometry. The whole assembly is enclosed 1.6-1 6 0 Q Amendment No. 5 11/3/69

1 i i I i i. by a 3-inch thick lead shield to reduce background radiation. The cutput cf the detector is registered - by a count rate reter. The sensitivity obtained 1

                                                                                                                   -o 1

is approxisately 3 x 10 uci/ 1 of water. This is the limit of detection and i will be the -axi=um per=issible concentration alleved. ! Table 1.6-1 l Ixamples of Measure =ents in Pri=ary Coolant in Operating Nuclear Pcver Plants Yankee-Rove Indian Point Yankee-Conn Activity ue/1 ue/=1 uc/=1 Gross Y 0.05 to 0.10 0.2 to 0 3 0.2 ' i N-13 0.2'- to 0 3 ! 10 -5 to 10 h 10-* to 10-3 -6 l I-131 5 x 10 to ; 5 x IV 2. 6 x 10-3 ; Sr-90 < 1 x 10-5,to

                                                                                                                                                  < 3 x 10 1 Cs-137                                                                           3 x 10-5 to 6 x 10.L                                         t 4

i H-3 1 to L .01 to 0.L6 0 7 to 1.6 t 1 *Due to peaking following a shutdown. l i l i l l t I i I g, i 1.6-2tIJ ^., - -

                                                                                                                                                               ../.      Arend ent No. 5              i 11/3/63

f ,' \ l.7 You have indicated in Amendment :so. 5 cf the applicatica that activity in the process stes: experted to the Dev Che=ical Corporation vill be deter-nined by the re-eurement of the nitrogen-13 activity. Identify the source of nitregen-13 and list the cencentraticns anticipated in both the primary syste= and in the secundary syste= when Operating with a 1 gp= primary te secondary leakage rste. State all assu=ptions and constants used deriving this value, in cluding transit times, cross sections, re=0 val mechanisms, and partition facters. Provide a sn-ary of applicable experimental data which indicates that tenitoring the nitrogen-13 activity would prove an acceptable means of deter =ining the gross activity level in the steam. Ansver: Refer to Pages 12-1 and 12-2 of Acendment !ic. 6 transmitted to Dr. Peter A. Morris en Dece=ber 29, 1969 s.t (' t ) n~ I \ U ,m . t L * . W.. s 1 7-1 Anendnent Iso. 7 1/19/70 1

_____ _ _.._..m. _ _ ______ - _ _ _ _ _ _ _ _ _ _ _ . . _ . _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ - - . _ . _ _ _ _ _ _ . 1 1 I 4 i 1.3 Indicate which portions of the =akeup and purification systen sh:.T. en

Firre 9-2 of the ?sAR as a: ended are desic:ed to class I seismic criteria.

1 4 Answer: Refer to Figre 9-2 of A ent:ent No. 6 transmittei to Dr. Peter A. l Itrris on Dece ber 29, 1969 1 l s , 1' l I r t L i 1 i i 1 i i 1 t i l9 ). I 1 i e l i

),

i i i l f i I is h t i f l I I i < i i (

I 4

L i i 1 00f09 A ; . 1.8-1 A=end:ent No. 7 1 i 1/19/70 , N I 1 ? 4 _ - . _ _ _ _ _ _ _ , . - _ _ . _ _ _ _ _ . _ . _ . . - _ . _ _ . _ _ - . , _ - - _ _ _ .,.,___-.,,--ww_

2.1 No mention is made in the PSAR of a preoperational environ = ental radiation monitcring program. Describe in detail your proposed preoperational environ = ental radiation monitoring program including, but not limited to, the ai=s of the progra=, the types of sa:ples to be taken, the ca=pling locations, the radionuclides for which you vill analy::e, and the =eans for deter =ining critical pathways in the food chain to man. Provide also the details of any planned ecological studies to be made in the aquatic biota in the area that could be affected by the operation of the proposed Midland nuclear facilities. Answer: Objectives of the Environmental Survey A preoperational environ = ental radiation survey vill be conducted at the Midland Nuclear Power Plant to meet the following objectives. Pe survey vill determine the existing level of radioisotopes in the environ =ent surrounding the facility. It will note the use of the environment in the area and sample those substances either directly consumed by =an or involved in the ecological food chain of =an. In this manner a valid basis vill be established to provide a comparison of future levels to preoperational levels. Furthemore, this approach vill provide a method by which the following can be acco=plished in the operational survey: (1) Dose to can as a result of releases from the facility can be established, and (2) buildup of radioactivity in the food chain can be detected early if it occurs so that corrective steps can be taken. An operational radiation survey vill be designed to answer the fol-loving questions: (1) What is the dose to can due to radioactivity releases from the facility, and (2) is the ecological environment of the area being prohibitively affected by radioactive releases from the facility? Hence, both the preoperational and the opemtional =onitoring program vill centain a sampling plan designed to meet this objective. As a result, air, water, aquatic life, including fish, river sediment and in-plant process sampling and monitodug vill be perfor=ed.

               'In-plant monitoring vill be performed because here process streams are more concentrated und,' hence, more accurate results of vaste discharges can be obtained. Also, during periods of little or no vaste discharges, it vill be the only method available to calculate amounts of vaste discharged and environ = ental consequences thereof. During such periods, the environmental survey outside the plant ' vill show little or no statistically significant
 . levels of radicactivity above background.

OWlo 2.1-1 Amend ent No. 5-n/3/69

Fish vill be sa= pled and analyzed for their radicact. re content in order tc provide data for the contribution of =an's dose due to ingestion. Air and water vill be sampled for two reascns: (1) They are consumed by =an and, hence, the analyses vill provide contribution to =an's dose due to their intake, and (2) they are the beginning of the food chain that eventually leads to an ingestion dose by =an. Other aquatic life and river sediment will be sa= pled only to provide data on long-ter changes to envirormental ecology, including possible reconcentratien, and not be used directly in dose to =an calculations. These aquatic life sa=ples vill consist of benthic organists collected with an appropriate sampling device. Finally, external ga==a dose to =an vill be estimated by placing both film and thermoluminescent dosi=eters in the environment. Table 2.1-1 on the folleving page shows tentative sensitivity require =ents to be used in both the preoperational and operational envirormental radiation survey. The unidentified S decision limit vill be used in the following way: Air - Wen a gross S count reveals activity levels in excess

/^)

D of lx10 ~13 pC1/=1, analyses for specific isotopes as listed vill be performed, with the exception of I-131. An I-131 analysis vill be performed on all air sa=ples. Water - When a gross S count reveals activity 6 excess of 1x10

                                  -0 pCi/=1, all other specific analyses listed vill be performed with the following exception:

Tritium analyses vill be perfor=ed on all river water samples.

Organic - When a gross S count reveals activity in excess of 5x10~ 9C1/=1, all other listed analyses vill be perfor=ed.
Includes all aquatic life and sediment.

O 00 ' d 2.1-2 Amendment No. 5 11/3/69

fy 7x

l ( a], 8

\.

v h Table 2.1-1 Sensitivity Requirements Sample Average Total Sensitivity Requirements tC1/ml 01ans Sample Size Gross S I-131 Fe-59, co-58, Mn-54 ZrIrb 95 co-137 Sr-90 Ba-La-lho Unidenti ried o Decin ton Li

                                                                                                     -12 Air         2x10 ml     1x10~    1x10~              -

1x10~ 1x10~ 1x10 -13 1xto uto -13 1x10 ~I lx10 ~I

                               ~9 CWater       1000 ml     5x10     2x10~                            1x10 -I          lx10 ~9       -

lx10~ Organic 1000 g bcl0~ 2x10 ~I 1x10 ~I 2x10 ~I 2x10 ~I lx10~ - 5x10

Film 5 mrem / Month or TLD Above Back-ground Y u

 #In addition to the water analyces, tritium analyses will be required at a sensitivity level ol' lx10-7 pC1/ml on all river water samples.

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                                                               ..                   .        .         ~                  .        ...       4...e           . ,,.,,.4.w4.....w.                                 . _ . . .. , .. , , , .           i cf the Phnt, a s1=ultaneous increase in '.evels Of radicactivity in both ri .gs during the operational phase of the survey can te construed to not te of Plant                                                                                                                                                         '

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ancther scurce such as fallout. The inner ring vill be placed at a distance fren the Plant where the l naxi== dose to nan is expected. Lis is deternined fren =etecrclogical con-sideraticns and accessibility of sites. Dcce to nan and buildup of radicactivity in the food chain can then ' te estinated en the basis of statistical differences between sanple analyses' ' results of the inner and cuter rings. P t O (,,* l '. ,1 1 2.1-5 Anendnent IIc. 5

                                                                                                                                                                                                          -l
                                                                                                                                                                                                          ,, n, fro we

    . -               -.     ._ ._ _ - . .                              ..                  -_- -         . - _    -      _      _ .       = . -           . _ . _ . . .

4 f i

 .i Salient features of each canpling location for the Xi- Ja-d a"viren-nental survey are shcvn in Table 2.1-3 telev.

4 i Table 2.1-3

;                                                                              Sateling Lccatiens and Cha acteristics 1
 .                          Stati-                                                                                                  Ca-   'a     Class l                        Preoperational                                                                              Fil: &                      Aquatic Survey                                                      Descrittien             Air TLD              '4ater        Life Sediment 1                       Midland ?inclear Plant site                        X       X           'a' ell 2                        ?.t miles upstrea en                              X       X              X           X                  X Tittabavassee River near                                                                                                !

bridge en Ecute M-20 In Chippewa River near cen- , fluence with Tittabavassee X X X l 3 One mile north of the , reactors at Cc=parJ's Midland Service Center X X f

4 One and ene-half =iles-northeast of reactor at .i Cc=pany's Golden Substation X X 5 One and one-half =iles east cf the reacters at Cc=pany's . Tittabavassee Substation X X

6 One =ile downstream of 4' reactor en Tittabevassee River near ecoling pond i

discharge X X X X X 4 7 One and ene-half elles scuth of the reactors at intersection of Sasse and Wise Ecads X X 8 One and ene-half niles southwest of reacters at Cc=pa J's Ballock Creek i Substation X X ; i 9 3ackground station in. . Cole =an 21 miles northwest of reactor X X s

d , C.s^, J.,o:e r 2.1-6 Amendment :T0. 5 11/3/69

i j ) Table 2.1-3 (contd) i Station Sample Class Preoperational Fih & Aquatic Survey Descrirtion Air TLD Water Life Sediment 10 Background station in 4 Pinconning 23 miles north-northeast of reactor X X 11 Background station in Saginav 18-1/2 miles south-j vest of reactor X X Future Adjustments to the Environmental Survey The preoperational and operatienal environmental radiation survey will remain flexible enough in all cases such that future adjustments can be made upon the knowledge gained from past sample collection and analysis. For example, the finding of a critical pathway or vector as determined by reconcentration in the food chain to can may justify the elimination of a given sample or samples and the inclusion of others. Differing techniques of analysis such as fi1= vs

TLD may require new approaches to dose esti=ates.

In addition to the above, changes in the environment surrounding the I facility vill be reflected in the progra=. A new population center, introduc-tion of a new commercial crop or a change in the use of water are all examples of such changes. Finally, sufficient monitoring equipment shall be available at all times to insure proper dose assessment in the event of an emergency. For example, film and ther=oluminescent dosimeters have an extremely vide range of dose measuring capability. Hence, their use of routine and emergency =onitoring equipment is well justified. Provisions vill be made to store extra dosimeters on site. Also, a plan vill be worked out to collect additional samples in the affected area. Frequency of collection and analysis vill be consistent with the half-life of the nuclides of interest. O U. OO ' p, - 2.1-7

Amend =ent No. 5 n/3/69

I L 1 f Table 2.1-k Saccle Collection Schedule 4 1 Mid'and Nuclear Plant I 4 1 En' tiron ental Surteillance l i i Sanple Collection A cnnt Oc Ee Collected ! Class _ her2ency P-ec erational C eraticna' I Air: I I f I 1 i Particulate k*eekly 6 11 l I dine k'eekly 6 11 } I j i Other !iuclides On ReTaest : i See Table 2.1-1 - - - t

                  'a'ater:                                                                                                                                               e i

j Tittatawassee and i Chippeva Rivers Grcss S Monthly 3 3 i Tittabavassee and , Chippewa Rivers , t , Tritiun Monthly 3 3 i Other Iluelides On Request i - See Table 2.1-1 - - ! f i Organic: Gross 6 M nthly klen Practical - -

Ga--a Scan 'Menthly on I i

Fish and Other ! P Aqu Lic Life l klen Practical 9 9 i l Other !iuclides 7 On Re7aest + See Table 2.1-1 - - t. t I r

           @                                                                                                                                                            l o

t h) ;. i: r> .( 2.1-8 Amend:ent IIo. 5 ! 11/3/69 i 1 P I

  .--_                                        _ - - _ _ _ _ _ _                                                    - . _ - . , .                  . _ . ~ _ __--m.m-

s s- 2.2 The state =ent ic =ade in the PSAR that there will be sufficient storage capability in the cooling pond so that the two nuclear plants can be cpers'.ed for 100 days without =nkeup for the pond. Provide the basis fcr this statement including the volu=e of the pond, and tne estimated evaporative losses and infiltration losses into the sand. We understani that a low spot in the ecoling pond has been provided so that in the event that the dike faile a reservoir of water will still be available to provide emergency shutdown cooling water. Provide details of the size of this reservoir and the length of time that cooling could be maintained using only this reservoir. State the =sxi=um and mini =u= te=peratures of the pond for both operating and shutdoen conditions, listing all heat transfer assu=ptions. Answer: Introduction The LOO-day storage capability of the main pond relates to continued plant operation with both units at or near full power. From the standpoint of safe plant operation and shutdown capability, the more pertinent point is the performance of the emerdency cooling pond. Thus the answer gives the infor-mation requested regarding the main cooling pond and the erergency pond, bhin Pond (~N , 4 The main cooling pond has been sized to provide a pond capacity suf-V ficient to satisfy the plant full power operation cooling needs during an assumed 100 day drought period and when no stream withdrawals could be made frc= the Tittabawassee River. The pond, with a minimum depth when full of 12 feet and with a surface area varying between 860 to 880 acres between minimum and maxi =u= operating pond levels (Elev 618 to 627), has a total storage volume of approximately 12,600 acre-feet. Of this total volume approximately 7900 acre-feet are con-sidered usable daring the 100-day drought. An additional 2600 acre-feet are included to provide a three-foot mini =u= vater depth. The remaining storage volume of about 2000 acre-feet includes those deeper areas in the eastern half of the pond, and is considered dead storage unavailable for plant cooling opera-tions. The usable storage volume is equal to the esti=ated evaporative and seepage losses occurring during the 100 day drought. Using the method described in " Heat Exchange in the Environment" by J. E. Edinger and J. C. Geyer, EEI publication No. 65-902, the pond evaporation losses have been co=puted as approxi-

 ,       mately 8 feet or about 7000 acre-feet during the 100-day drought.

I i t /

%/

(}() { I[3 2.2-1 'A=end=ent No. 5 11/3/69

t i A thorough soils investigation progra: has been included in the pond design. The reservoir site has been found to be underlain by soil strata of low per:eno111ty with occasional pockets of more pervious sandy soil I confined to the upper =cs soils - generally to a depth less than 15 feet. A 4 cutoff vall of suitable i= pervious =aterials and/or a bentonite slurry trench has been located within the dikes. A thorough well sealing progra= is also included to prevent seepage through the existing water wells at the pond site. Esti=ated seepage losses are considered =inimal - not to exceed 1-2 cfs. For design purposes, a seepage loss of 4 cfs or approxinately 800 acre-feet was i arsu=ed for the design drought. In su-Ary, the usable pond storage volu=e of 7900 acre feet is l adequate to provide for about 7000 acre-feet evaporation losses and 800 acre-feet seepage losses during a 100-day drought period. ! E=ergency Pond A 24-acre area within the northeastern corner of the cooling pond has been excavated to a depth of about 6 feet below surrounding grade to provide ! an e=ergency cooling water reservoir in the event of dike failure. Based on an c r O assu=ed four-foot water depth above the intake invert, the reservoir would in-sure about 70 acre-feet of available storage volu=e if a dike failure of the

                                   ' =ain cooling pond were to occur. This volu=e is sufficient for 30 days of plant shutdown heat rejection, estimated at 1 x 10" Etu, and pond seepage, with-out makeup.

This assessment was derived by the =ethod indicated above for the

=ain cooling pond perfor=ance evaluation; it is based on a postulated loss-of-i 6

}_ coolant accident, with initial heat rejection of 220 x 10 Btu /hr decaying to . 100 x 106 Btu /hr at 15 days. It also accounts for seepage losses of 0 3 ft- per

                                    =onth.              The resultant service water inlet te=perature is calculated to be 100 F
                                    =aximu=.

The e=ergency pond is nor= ally used as the service water syste= heat 2 sink during vinter operation.

                                    *4 ell Sealing                       ,

As stated above, a thorough well sealing progra has been included in the pond design. Based on a site survey, approxi=ately 51 vells have been identified as within the work limits and.will be sealed. The wells generally

                                   . have 2-4" casings and range in depth from 80-150 feet below existing ground; a

i i' 2.2-2 00i.I9 Amenement no. 6 12/26/69

V at four wells, flow was under artesian head. Sealing of the wells was divided into two groups: (1) Those wells with a check valve attached directly to a single casing and (2) those wells without check valves or with check valves l attached to a supply line separate from a second outer casing. For those wells with a check valve attached to a single casing, sealing is accomplished by placing grout directly upon the valve to form a positive well seal. Grout will be placed through a grout pipe inserted into

the well casing; grouting operations will continue until the grout emerges at the top of the casing. The grout pipe vill then be recoved, the casing topped I

! out with grout, and the grout level checked to assure that the well has been l effectively plugged. For those wells without check valves or with check valves attached to a supply line separate from the outer casing, sealing is acco=plished by pressure grouting about the center pipe and effectively plugging both the outer casing area and the supply line. Through a specially prepared cap attached to the existing supply line casing at the surface, a 1" pipe is inserted to within five feet of the top of aquifer; grout under about 20 psi pressure is injected into the grout pipe until the grout is observed flowing into an inspection pipe v welded to the surface cap. After the grout has set, the well will be pressure tested to a 30 psi pressure for ten (10) minutes to insure that the hole is i sealed. j The grout will be composed of cement, water and alt:inum powder. The cement will' conform to the require =ents of ASTM Designation C 150-68, Type III. 1 l c 1 J J 2.2-3 Amendment No. 6 00f.20 12/26/69

I x - t

 ' ')     23 In the PSAR, three separate and distinct ficoding criteria are used for the facility: the protection of the dike; the prctection of " vital instal-lattens" frc= floodirg; and the protection of the diversien c>a--a' ^#

Bullock Creek. Provide a list of " vital installations' and the ficcd pro-tection level for each. Provide an analysis of the effects Of the cecur-rence of the " probable max 1=u= flood" (RF), as defined by the U.S. Ar=y Corps of Engineers, on Bullock Creek on the " vital installations" within this facility. Answer: Only two ficod criteria were used for the design of the facility. First, the probable maxi =um flood (FMF) on the Tittabavassee River has been used to establish the protection level of the vital installations. The prob-able =aximum flood is esticated to be 270,000 cfs with a flood stage elevation 632 at the plant site; the flood prctection level has been established as elevation 63h. For purposes of this report, vital installations include those facilities classed under Criterion 1 (Reference PSAR Page 1C-1), which are contained in the following structures :

1. Reactor Buildings

2. Auxiliary Building

    ~')                 3    Service Water Pu=p Structure (V                       h. Diesel Generator Building 5   Diesel Fuel Storage Facility In addition to the above, the solid waste storage building is in-cluded as a vital installation. For design purposes, all structures within the plant site except the turbine building have been flood-protected to eleva-tion 63k.

The second flood criterien used in the project design is the 1CO-yr flood. This ficod was used to determine the height of the dike e=banktent protection, to study clearances for several new bridges to be built for this project, and to design a diversion ditch to relocate two ditches formerly traversing the cooling pond area. The 100-yr flood for the Tittabawassee River has an estimated flow of 55,000 cfs; the 100-yr flood for Bullock Creek is estimated at 3700 cfs. The probable maximum ficod (RE) for Bullock Creek was not developed because it is a minor stream of only h0 sq mi drainage area (including the Waite and Debolt drains ). However, by factoring up the 100-yr flood in the p r ratio of rainfalls, we esti= ate a Bullock Creek FMF peak of 19,000 cfs. At w/

       ! this discharge the stage would be about 615 - well below the flood protection level of 63h used for the plant site vital installations.

2 3-1 A=end=ent No. 5 11/3/69 d0 r .c,1 c,

/3 ( ,) Normally, backwater from the Tittabavassee River causes runoff in Bullock Creek to flow very slowly. However, assuming the Bullock Creek FMF vere to occur concurrent with a level in the Tittabavassee River less than elevation 603 (3 ft over bank-full condition), f1:v would be much faster; we estimate that the Bullock Creek FMF would overtop the levee opposite the plant site for a short time during its peak period. On the project side, some scour-ing of the stream bed and shifting of the riprap protection might occur. For a few hours before and after overflow of the opposite levee, velocities in Bullock Creek would be high under the conditions assured. The lower the Tittabawassee River level, .the longer will be the duration of these high velocities. Also, at a point 200-300 ft upstream from the north end of the plant site enbankment, the creek flow will accelerate under the assumed conditions une to the steeper water surface slope from the creek to the river. The flow will go through critical depth in this reach, probably at the down-stream end, reaching an average velocity at that point of about 20 fps, and a velocity against the riprap protection of 5-10 fps. The riprap protecting the plant fill extends from the tce at /N ! ) stream bed (elevation 592 t) to elevation 61h. The nearest point of a vital installation structure is set back over 160 ft from the top of the fill slope. In sun =ary, the probable maxi =um flood on Bullock Creek might necessitate some repairs of the riprap bank protection but will not endanger the vital installations at the plant site. Subsequent to the preparations of the above co= cents, and pursuant to hydrology questions transmitted by letter from P. A. Abrris to R. D. Allen on February 26,1970 (as included in pages I-1, -2 and -3 of Amend:ent 9 to this report), t further review of the PMF flow and the resulting stage eleva-tion is currently being cade. The applicant agrees to provide whatever addi-tional flood protection, if any, is required in accordance with the revised PMF flood co=putations based upon the assu=ptions stated in the AEC letter referenced above. i A s i-/ 2 7-2 s Amendment No.10 h/10/70 {} {} * ?v?.',)

2.k With regard to the P!E infc =ation presented in the PSAR for the Tittabavassee River, provide the following additional inf0=ation:

1. Data and method of analysis used in calculating the unregulated PMF discharge, without the added discharge due to da= breeching.

All inte =ediate results, such as unit hydrographs and infiltra-tion losses should be provided.

2. Data and the method of analysis used to determine the effect at the site of the breeching of upstrea= da=s coincident with the occurrence of the PMF. List the da=s breached and unbreached, the capacities of the dams, and the method of releasing water from the dams.

3 Ixta and the =ethod of analysis used to deter =1,e stages for the various flood discharges analyzed.

k. Velocity data of the Tittabavassee River for the HE as it passes the site. -

Answer:

1. The " probable maxi =um flood" (P!6) discharge of 270,000 cfs adopted for the Tittabavassee River at Midland is based on a study prepared by Messrs. E. F. Brater and C. O. Wisler, University of Michigan, for the Dow l Chemical Company. Their report (attached) presents data and method of analysis used to calculate the PMF, and includes unit graphs and infiltra-tion loss rates. A su==ary of this report is included in the PSAR, Pages 2B-3 and 2B k.

The Brater/Wisler report included breaching of four upstream dams. If breaching of the da=s was not considered, the P'? vould be reduced to about 250,000 cfs.

2. The analysis to -deter =ine effects of breaching of the upstream l dams was aisc included in the Brater/Wisler report (Page 16 of the referenced I report ). As noted in the report, the effect of the da= failures would be similar to an increase in the total volume of effective precipitation. The total storage vclume of 187,000 acre feet for the four da=s discussed in the r ~ report corresponds to 1.k6 in, over the drainage basin; assuming that 75 percent of this volume vill be released when the da=s fail, the effect of the breaching i

of the four da=s is to increase the PMF by about 20,000 cfs.

 ~                The following listing sun =arizes the upstres= da=s assumed to be breached:                       ,

O

                                                            ;on 2.k-1         C"' '*

A=endment No. 6-12/26/69 [

I i Reservoir

!                                      Name                             Dan Height. ft                A ea. Acres

1. Edenville (Wixon Lake) k3 5 3.660 ,

2. Smallwood 28.0 1,290 3 Secord h6 3 2,090

!                   k. Sanford                                               26.0                       2,115 Each of the above four dams (all are located on the Tittabawassee River), release water through power plants and through radial control gates in the spillway. The total storage volume of the four dams is 187,0C0 acre feet.

In addition to the four dams assumed to be breached, there is a l fifth dam presently under constniction and upstream of Midland on the Chippewa . River. This dam, for the Lake Isabella reservoir, will have a da: height of 38.0 feet and contain a reservoir surface area of 730 acres. In reviewing

         .         the RF at Midland, it was assu=ed unlikely that this dam would be breached coincident with the das failures on the Tittabawassee; therefore, dam breach-ing of the Lake Isabella Da= is not included. Moreover, even if the breaching

, D l Q of this fifth dam is included, we calculate that the 270,000 cfs PMF used would increase by less than 1 percent. l 3 Analysis to deter =ine stages of the Tittabawassee River for. the I flood discharges was =ade using the " Standard Step Backwater Method," (reference

                   " Hydraulics of Open Channels" by Chow). Data used in the computations included:
                                                                      ~

l

a. River cross section obtained from the USGS topographic map

! Midland South, Michigan, scale 1:24,000.

b. A rating curve for the USGS gage "Tittabawassee River at Midland" extended to 270,000 cfs. (Figure 2.h-1 attached. )

c. Riverbed slope for the Tittabawassee River was based on the

                  -Dow Chemical Company's Report No. 56-21, " Flood Protection of the Midland Plant i                   from Extreme Floods on the Tittabawassee River," November 1956 (Figure 2.k-2
                 . attached from above report.)

d. - Average channel roughness, Manning's coefficient "n" = 0.05

!, for preproject and about "n" = 0.Ok for postproject conditions, based on in-formation.in the report " Flood Control on the Saginaw River, Michicsn and Tributaries," Design Memorandum No. 1, Appendix A, Hydrology and Hydraulics. Q L' U.S. Army Engineer District, Detroit, December 1960. i 2.k-2 , p' 7"3 A mendment No. 6 12/26/69 '

l t i 4 i E i j

e. Stage calculations for the PF flood discharge are attached I

to this report (Figure 2.k-3 thrcugh Figure 2.h-9). j k. Average velocity in the Tittabavassee River and ficoded area Op- ! { posite the plant site was c0=puted as about 3 7 fps for the ?F. This velocity l i l i assunes no flow over or through the cooling pond dikes. He velocity in the I i channel proper will be about k.5 fps but it vill probably not exceed 3 5 rps

adjacent to the e= bank =ents.

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n FIG. No. 2.4 - 9 g g . y, --

l m 2.5 Discuss the consequences of over-topping the cooling pond dikes and/or ! da= age to the dikes in the event of a flood. Discuss the ability to provide a heat sink for emergency equipment to dissipate decay heat in the event of a flood considering the potential for debris or portions of the dike entering the emergency storage water area. Answer: The top of cooling pond dikes have now been established at elevation 632. Inasmuch as the probable maximum flood elevation is also elevation 632, it is highly improbable that the dikes would be overtopped or breached. There-fore it is not considered probable for debris to enter the cooling pond. How-ever, with riprap bank protection only up to elevation 614, some erosion of the dike banks could occur. After the flood stage recedes, an inspection and some maintenance probably would be required. - As noted above, the overtopping of the dikes is improbable and, there-fore, surface erosion across the dike crest is unlikely. The twenty-foot minimum width at the dike crest also minimizes the possibility of dike breaching. To further protect against surface erosion, the dike design includes gravel sur-p facing along the top of dike, and riprap protection (to elevation 614) and (,, sodded turf (elevation 614 to 632) on the outer dike slope. Moreover, the short duration of floods above elevation 614 (the 100-year storm flood stage) with relatively lower velocities in overbank, areas vill also reduce potential dike erosion damage. Because the top of dike is equal to or higher than any estimated flood stage, plant maintenance personnel will be able to constantly survey and provide maintenance (including sandbagging) to threatened areas + during any flood stage. Therefore, breaching of the dikes by flood waters either overtopping or eroding away the dike surfaces is highly unlikely. I O I

O 2 5-1 Amendment No. 6 g, 12/26/69

(". t 25 Discuss the consequences of over-topping the cooling pond dikes and/or damage to the dikes in the event of a floed. Discuss the ability to provide a heat sink for energency equipment to dissipate decay heat in the event of a ficod considering the pctential for debris or portions of the dike entering the energency storage water area. Answer: The top of cooling pond dikes have now been established at elevation 632. Inasmuch as the probable maxi =um flood elevation is also elevation 632. it is highly improbable that the dikes vould be overtopped or brev.hed. There-fore it is not considered probable for debris to enter the cooling pond. How-ever, with riprap bank protection only up to elevation 61h, sone erosion of the dike banks could occur. After the flood stage recedes, an inspection and sone naintenance probably would be required. (D N] (m ? i V 2 5-1 Amendment No. 5 O()!19 11/3/69

i ,

s. 2.6 Provide low flow probability statistics for the Tittabavassee River and compare the required mini =u= river flow for =akeup with the probable lov flows that could occur in the river.

4 Answer: I Although the river flow is not related to the centinued safety of the i nuclear plant, it is related to the continuous electrical generating capability. 4 A summary sheet published by the U.S. Geological Survey showing the flow char-acteristics of the Tittabavassee River at Midland for the period of record 1936-196h is attached (Figure 2.6-1). Based on this data, a probability curve J for the 90-day low flow has been prepared and is also attached (Figure 2.6-2). Evaporation and seepage losses will require an estimated 40 cfs makeup frc= the river. Following is the tentative program for river water withdrawal:

1. Less than 350 cfs - Withdraw no river water.

2. 350 to 390 cfs - Withdraw flow in excess of 350 efs.

3 390 to 650 efs - Withdraw h0 cfs.

- k. 650 cfs and above - Withdrav 40 efs plus the excess above 650 efs to a total withdrawal rate of about 200 ers as required to refill f- s - pond.

(s. Based on the attached ' probability curve, it is esticated that there is about a 20 percent chance or one year in five that the lowest mean river discharge for 90 consecutive days vill drop below 350 crs and thus limit river withdrawal. 'Further, it is estimated that there is about a 30 percent

                 -chance that the lowest mean river discharge for 90 consecutive days vill be below 390 ers and, therefore, not allow continuous withdrawal of a full 40 ers.

The flow classes given in Table Ib in Figure 2.6-1 are mean daily discharge in efs and there vill be some periods during days when the discharge is above 350 ers and thus permit withdrawal of river water during part of the day. Based on a detailed study of river discharges, a 100-day drought was

                 . established as the design criteria for sizing of the pend. To provide for 1
                 - those periods when none or only partial- river water vithdrawals could be made, thh cooling pond includes a total' of 7900 acre feet of. useable storage volume
                 .for evaporation and seepage losses during the 100-day drought period.

If a continuous drought -in excess of 100 days should occur, with the plant operating at full power for the previous period, it vill be necessary to curtail power operation. As- power. operation is limited to 3 feet of depth in i-fI

   - s the main cooling pond, there would still be ample storage for emergency service
.                vater cooling.

2. 6-1 0 0 ' @- Amendment no. 5 11/3/69

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