ML20080F664

Proposed Tech Specs Revising TS 3.7.7,3.8.1.2,3.8.2.3 & 3.9.12 & Adding TS 3.8.1.3 & 3.8.1.4 That Will Change Number of DG Required to Be Operable During Mode 5 & 6

ML20080F664
Person / Time
Site:	South Texas
Issue date:	01/23/1995
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20080F652	List: ML20080F664 ST-HL-AE-4977, Application for Amends to Licenses NPF-76 & NPF-80,revising TS 3.7.7.,3.8.1.2,3.8.2.2,3.8.2.3 & 3.9.12 & Adding TSs 3.8.1.3 & 3.8.1.4 to Change Number of DG Required to Be Operable During Mode 5 & 6
References
NUDOCS 9501300127
Download: ML20080F664 (30)

Text

01/24 '06 07:16 ID1 NUCLEAR LICENSINC FAXt612-072-0200 IV G 10

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A'lTACHMENT 3 s PROPOSED CHANGES TO TECHNICAL SPECIFICATIONS 3.8.1.2, 3.8.1.3, 3.8.2.2, 3.8.3.2 , 3.9.12 AND BASES i

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01/24 '06 07:17 ID M.lCLEAR LICOGINC FAX:512-072-82o8 f%CE 11  !

./, .. t ST-til-AE-4977 Attachnent 3 Page 1 of 7 ELECTRICAt POWER SYSTEMS A.C. SOURCES N ,

LIMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A.C. electrical poer sources shall be OPERABLE:

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a. One circuit between the offsite transmission network and the Onsite Class IE Distribution System, and i 2

b. Two standby diesel galerators each with a separate fuel tank containing a minimum voTume of 60.500 gallons of fuel.

l APPlICA31LIIY: MODL b and Hoce 6 with water level in the refueling cavity < 23 ft .

above tne reactor pressure vessel flange.

l ACI12 With less than the above minimum required A.C. electrical aower sources OPERABLE.

immediately suspend all operations involving CORE ALTERATI MS positive reactivity

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changes, rrovement of irradiated fuel, ooerations with a potential for draining the ,

reactor vessel or crane operation with loads over the spent fuel pool. Immediately '

initiate actions to restore the inoperable A.C. electrical power source to OPERABLE status.

SURVEILLANCE REQUIREMENTS l

4.8.1.2 The above required A.C. electrical power sources shall be demonstrated l OPERABLE by the performance of each of the re '

4.8.1.1.2 (except for Specification 4.R.1.1.?quirements a.1) . and 4 of Specifications 4.8.1.1.1.

8.1.1.3.

4.8.1.2.1 The alternate onsite emergency power source shall be demonstrated functional by:

a. Within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of taking credit for the onsite emergency power source as a l' star.dby diesel voltage (tJ05) generator, verify and frequency it starts (125) and achieves steady state in 5 minutes,

b. Within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of taking credit for the onsite emergency power source as a standby diesel generator and every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter, verif emergency power source is capable of bein by performing a breaker alignment check. g ESF luired aligned bus to 2

An alternate onsite emergency power source. capable of su plyirg power for one trajn of shutdown cooling may be substituted for one of t e required diesels for 14 consecutive days (SR 4 8.1.2.1 is the only requirement applicable).

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71 consecutive days for 1RF05 and 2RE04 Refueling Outages only. ,

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01 4 4.'05 07:17 ID:NUCtIAR LICENSINC FAX:512-072-8200 PACE 12 S1-HL-AE4977 Attachment 3 Paoe 2 of 7 LLEC:RICAL POWER SYSTEMS -

A.C. SOURCES SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.1.3 As a minimum. the following A.C. electrical power sources shall be OPERABLE:

a. One circuit between the offsite transmission network and the Onsite Class IE Distribution System, and b One standby diesel oenorator with a separate fuel tank containing a mininJm vnhane of 60.500 gallons of fuel.

J A' PL ((MILITY: H0DE 6 with water level in the refueling cavity 123 ft above the reactor pressure vessel flange.

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With less than the above minimum required A.C. electrical power sources OPERABLE.

Imediately suspend all operations involvire CORE ALTERATIONS. positive reactivit.y changes, movement of Irradiated fuel, ooerations with a ential for drainina the reactor venel or crane operation W1th loads over the s fuel pool.

initiate actions to restorv the inoperable A.C. electri al power source. Immediately to OPERABLt status. j SURVEILLANCC REQUIREMENTS 4.8.1.3 The above required A.C. clectrical power sources shall be denonstrated OPERABLE by(except for Specification 4.8.1.1.2a.3), and 4.8.1.1.3.the performan 4.8.1.1.2 i

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I 0144 '06 07:88 IDENLQEAR L1ENGINC FAX:582-072-8200 PACE 13

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ST-ML-AE-4977-Attachment 3 Page 3 of 7 ELECTRICAL POWER SYSTEMS D.C. SOURCES SilVTDOWN < "

l.IMITING CONDITION FOR OPERATION 3.8.2.2 DC electrical powr cubsystem shall be OPERABLE to support the DO electrical oower

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APPLICABILITY: MODES 5 and 6, i

EIl03-With one or more required DC electrical power subsystems inoperable dmmediately declare affected required feature (s) Inoperable OR .tM reag:1:'Od bit ^ry Mnd :d/0r 1:: verb)for dreining the reactcr vessel, suspend all operat1ons involvinin0per:b potential ALTERATIONS, positive reactivity chances, or movement of Irrad18ted fuel; ginitiate CORE corrective action to restore the required DC electr icdl power subsysttes htt0ry D:20 and/0r ch:r;cr: to OPERABL status es soon as possibic, :nd ,;iudn S h=:,,

depre: urize and vent tk 2:ct r 00;hnt Sy:t= tPr;;;h : 2.0 ;quere in;h v;nt.

SURVE!LLANCE REQUIREMENT

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'4 .8.2.2' Tne above required 125 ve't httery bnt ::d ch r cc: DC sources shall be demonstrated OPERABLE in accordance with Specification 4.8.3.1.

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p3/24'0507288 ID:WCLEAR LICENSING FAX:512-072-8200 IWE 14 SI-HL-AE 497/

Attachment 3 i Page 4 of 7 i

ELECIR1 CAL POWER SYSTEMS ONSITE POWER U1SIRIBUl10N SHUTDOWii 1.

LIMITING CONDITION FOR OPERATION 3.8.3.2 The necessary portion of AC OC, and AC Vital bus electr1 Cal power ~

distribution subsystems shall be OPERABLE to support equipment required to be OPERABL.E.

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APPLICABILITY MODES 5 and 6.

AC.T1Q3: (

With one or more required AC. DC, or AC vital bus electrical power distribution subsystems inoperable, immediately declare associt,ted supportea required feature (s) inoperable OR .:-

=^';d *?d =rner.immediately y Of 150 ?^ve initiato r^';uired-electrical action to suspendbus;00 operations n0t ariiind i^. tt with a potential i

for draining the reactor vessel suspend all operations involving CORE ALTERATIONS, positive reactivity changes -en, movement of irradiated fuel, and in:modlately initicte ,

i corrective action to restore reouired AC. DC, and AC vital bus electrical power i distrib; tion subsysinms to OPERABLE status and declare associated required residual htat removal subs eletrtal 5"^*.ystants) 4- inoperable

• he te rifi c and e mnot e nint-- operation. ^~2a;;te .50 receired d^;re z u" re d v^-'

• RS t h "^' :t 1 nt : 2.0 c';uere n p e tible =d-within I hours.- .

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tee benen- Verify corr:ect breake;r alignnent and voltage to rRqui ,

vital bus electrical power distribut10n subsystens at least one.e per 7 days.

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51-Hl.AE 4977 Attachmont 3 Tage 5 of 7 REFUEllNG OPERATIONS 3/4.9.12 FUEL HANDLING BUILDING EXHAUST AIR SYSTEM LIMITING CONDITION FOR OPERATION j

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3.9.12 The FHB Exhaust Air System ' comprised of the following components shall be OPERABLE:

a. Two tigniat exhaust air filter trains.

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! b. Two of Three indep=det exhaust boostor fans. -

• c, Two of Three indepedent main exhaust fans, and )i

d. Associated dampers.

. APPLICABILITY: Whenever irradiated fuel is in the spent fuel pool.

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a. With less than the above FHB Exhaust Air System components OPERABLE but l with at least n FHB exhaust air filter train, t,we one FHB exhaust I booster fan, twe one FHB main exhaust fan and associated dampers  !

OPLRAdLL. fuel moveme'it within the spent Iuel pool or crane omration with loads over the spent feel pool may proceed provided the OPERABLE FHB ,

Exhaust Air System components are capable of being powered f rom an OPERABLE emergency power source and are in operation and discharging through at least one tra1n of HEPA filters and charcoal absorbers.

D. With no FHB exhaust air filter trair:. .' l'..t the" t= FHS 02:act b000t^#

fan. Or 100; tbn tw0 FHB ::in =h:u:t f:r, =d :: Ociated d::p0r; j OPERADLE. suspend all operations involving movement of fuel within the spent fuel pool or crane operation with loads over the spent fuel pool J untM :t k::t ene r!!0 :2:=t :ir fHter tr:M. t= FMS :2:a;t-t=,ter 4n. tw0 ::in 02 Utt f=. =d 0:00010t0d d: per arc r0 t0 red t0 CPEP.*SLE st+te r

c. The provisions of Specification 3.0.3 are not opplicable. )

SilRVEILLANCE REQUIREMENTS 4 9.12 The above required FHB Exhaust Air Systems shall be demonstrated OPERABLE: q a.

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theleast once control perflow room. 31 days through nn the a STATERF0 HEPA filters TEST BASIS by and charcoal initiating,bers and absor l erates for at least 10 c.ontinuous hoars with verifying that the system o[wc Of the trrec the operable exhaust booster theheatersoperatingw^ith fans and two-ef -the hr c the operable 'r.ain exhaust fans operating to _ j maintain adequate air flow rate: 1 AL 1 cast one FHB cxhaust air filter train, one !!!8 exhaust booster fan. and one f HB main exhaust f an are capable of being powered from an OPlWRC on>lte ecrgency power 50urte.

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01,24 'os 07flo 'IDsNUCLEAR L! CENSING FAX 512-o72-8009 PACE 16 ST HL-AE 4977 Attachment 3 Page 6 of 7 3/4.( N L 'PTCAL POWER SYSTEMS - BASES '

g .. 3/4.8.3 A.C. SOURCFS. D.C. SOURCFS. and DNSITE POWER lhe OPERABILITY of the A.C. and D.C. power sources and associated distribu ion systems durino operation ensures that sufficient power will be available to suop y the safety-related equipment required for: (1) the safe shutdown of the fac111 y.

and (2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and 0.C distribution systams satisfy the requirements of General. power sources andDesign Criterion Appendix A tv 10 JR Part 50.

The ACTION requirements specified for the levels of degradation of the onwer source provide restriction u)on continued facility operation commensurate with the level f degradation. The OPERASILITY of t!e r sources are consistent with the in1tla cond1t100 assumptions of the safet ses and are based upon maintaining at least two reduqdant sets of onsite A.C.y ana and .C. power sources and associated distribution systems OPERABLE during acc1 dent condit1ons co1ncident with an assumed loss-of-offsite power and single failure of the other onsite A.C. source. The A.C.

" Availability of Electrical Power Sources " December 1974.and When oneD.C. source standbv dieseallowable there is an addifional ACTION recuirement to verif"y that generator all required is inoperable,bsystems systems. su trains components and devices that depend on t remainino OPERABLE standby diesni generators as a source of emergency oower. are also OPERABLE. and that the steam-driven auxiliary feedwater pump 1s OPERABLE This requirement is intended to provide assurance that a loss-of-offsite power event will not result in a complete loss of safety function of critical systems durin the period one of the standby diesel generators is inoperable. The term. veri . as used in this context means to administratively check by examining logs or her information to determine if certain comporents are out of-service for maintenance or other reasons. It does not mean to perTom the Surveillence Requirements needed to demonstrate the OPERABILITY of the corponent The OPERABILITY of the minimum specified A.C. and D.C. power sources and assoriated distribution systems during shutdown and refueling ensures that: (1) the facility can be maintained in the shutdown or refueling conditions for extended s f i 1ent inst tatio

+1me periods, foa monitoring and and ma (2)in$a"nkng the unkmeka;us.n s and control capability is available The alternate ons1te emergen p with, but not limited to one trai of_ower source equi) the following will be capable ment RHR of being ECW. loaded CCW.

essociated instrunentation. Contro Roum Mdkeup and CleanJp F11tration System and a 150 ton EA8 Chiller. This alternate onsite emergency power source will be capable of being started and loaded in sufficient time to prevent the reactor coolant temperature from exceeding design limits.

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel Guides 1.9.

Selection of Diese Genera < for Standby Power Supp generators are in a$cordancfor ust December 1979: 1.108.

• Periodic Testing o Set d 97 Capac"f D and ASTM Electric Power 5bstems at Nuclear Power Plants 0975 81 ASTMDl52-79.ASTMD262282.ASTMD429483, " Revision 1. Aub22.76 and ASTM __

78.; T; water (hrough the diesel while the diesel is not running, to preclude col starts. For the purposes of surveillance testing, ambient conditions are considered -

to be the hot prelube condition.

SOUTH TEXAS UNITS 1 & 2 B 3/4 8 1 w.vmm '

01/24 5'06 07:20 ID:MJcLEAR LICENclNC FAX:512-o72-8200 I%cE 17 ST-HI-AF-4977 Attachment 3 1 PaDe 7 of 7 REFUELD.G OPERATIONS BASES 3/4.9.10 and 3/4.9.11 WAIER LEVEL NEFULLING CAVITY AND STORAGE POOLS The restrictions on minicam weLer level ensure List sufficient water depth is  ;

available to remove 99% of the ass 101 lodine gap activit released from the rupture of an irradiated fuel ass y. The minimum water th is consistent with i the assumptions of the safety ana s.  ;

3/4.9.12 FUEL HANDLING BUILDING EXHAUST AIT 'NSTEM

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The limitatio'is on the Fuel Handling Building Exhaust Air 5 stem ensure that all radioactive material released from an irradiated fuel assemb will be filtered .

through the HEPA filters and charcoal absorber rior to discharge to the atmos)here, t 0)eration of the stem with the heaters at for at least 10 continuous lours -

11 a 31 day pert is sufficient to reduc e bu ldup of moisture on the absorbers and HEPA f'ilters. The OPERABILITY of this system and the resulting iodine removal ceDac y are consistent with the assumptions of the safety ana ses. ANSI N510-1 0 will used as a procedural uide for surveillance testing. is S ification s been modified by a note that tates at least on FHB exhaust air fil er train ,

FHBexhaustboosterfan,andoneFH8mainexhaustfanarecapableofbeingpow.one ered i from an Onsite emer n power source. This note ensures that required FHB exhaust i train components wi ve a emerg r source available, even if the limiting i co')ditions for o ration can be i . a e f on r  :

sources that sat sf this requiremen; are: ES/ T E ESF  !

diesel nerator f the associated re uired c nts: INN 0 DES /d TIONS below MODE 4. b) OPERABLE ESF diesel gene r capabl of pupply10 the requi 0 .

Components via cross tied trains, a ing one diese cenera r to suop all.

• requ red components. (c) An ep roved Non-safety relate 8 diese generator, supp ying the required filter grain loads in conjunction with an ESF diese poble of 3/4.9.13 SPENT FUEL POOL MININUM BORON CONCENTRATION Therestrictionsontheboronconcentrationofthespentfuelpoolensuresthatphe Nsbb e ar!e r ch"e"dN$$"espent 1 o sk akkhwNhYe!Nck  !

toSpecificatino.6.$r Sincethepresenceofboronisensurbe

. . t e rack will be maintained ess than or equal to 0.95 in the event of 1 oper oadt fuel assemblies. This boron concentration is more than adequate o ensure th K limit of 0.95. specified in Specification 5.6.1.1.4. will nut be violoLed u@er Llie following scenarlos:

(1) in Region 1, arny misloading of Category 1. 2. 3, and 4 assemblies: or.

(2) in Region 2. the misloading of one Category 1 assembly into the center of a fully loaded checkerboard area also containing Category 1 assemblies: or.

(3) ghemisloadingembly1nagegion2rackof ategory 1 as a Categ ry 1 assenbly in a Region 1 rack

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This iinit forboron rackconcentration criticality wi limi l notisbe theviolated value siecessor in tbe eventLu erisure thet the 0.95 of a Category 1 Kd assembly dropped in .the gap between the pool wall and a Region 2 reck nodule.

SOUlH TEXAS - UNITS 1 & 2 B 3/4 9-3 Unit 1 Amendment No. 43 Unit 2 Amendment No. 32 w.s <w a ,

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ENGINEERING TEST GUIDELINES FOR VENDOR SITE TESTING i 4

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0144 'o5 07:21 ID: NUCLEAR LICEtSINC ~ ~4 :512-072-8000 TWCE 10 ST-HL-AE-4977 Attacnment 4 Page 1 of 5 Engineerity Test Guidelines for the Vendor Site Testing of tie Alternate Diesel Generator Unit (NDG)

These guicelines were developed for testing the referenced machine and should be considered typical of the testing to be perforned for application of the Alternate Diesel Generator (NUG)

Reference Specification for Temporary Diesel Generator Unit Wabash HDG-4 Instruction Manual

1. Specification Requirements A. Capable of starting and running continuously without the aid of an outside power source.

B. Capable of starting and carrying rated load (both continuous and percent respectively. of nominal at any given load verload) with ambient air temperatures between 8" F and 105' F.

C. Capable of operating in parallel with an existing 13.8 KVAC. 3-phase pnwer source.

D. Capable of centinuous operation at 2000 KW and short term operation at 2200kw.

E. Capable of being started in 15 seconds to rated speed and voltage, and achieving steady state opeaation within 2 minutes.

G. Capable of starting and accelerating to rated speed the loods listea below in the recuired seqJence without exceeding the voltage and frequency cips and recovery times as follows:

• Load Block 1 - 564 KW e Load Block 2 - 579 KW e Lead Block 3 - 635 KW e Lcad Block 4 - 222 KW Total - 2000 KW

1. Output voltage and frequency dip shall not exceed 20 percent and 5 percent of rated. respectively.

2. Outege voltage and frequency shall recover to within 10

- percent and 2 percent, respectively, of rated in less than 2.__._,_ ,

seconds.

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L (W44 MM(9/Cr2 IDtNUCLE4t LICO61NC .FAXiS12-072-8200 PAE 20 ST-HL-AE-4977 Attachment 4 Page 2 of 5 II. Test Setup A. Instrumentation Installed instrumentation will be useo when possible.

B. Ca11 brat 1on All instrumentation used will be within its calibration cycle.

Calibration requirements are those as defined by Wabash.

C. Test Envirament Ambient environmental conditions will oe recorded.

III. Starting Test A. Demonstrate ability to start and reached rated voltage and frequency, et least 15 minutes after disconnection frun outside AC power source.

B. Demonstrate capability to reach rated speed, voltage and frequency within 15 seconds.

C. Demonstrate the ability to perform five starts and loading to 1000 kw for one hour with no failures.

IV. Load Acceptance Test A. Demonstrate ability to accept the load blocks 1 thru 4 as defined without exceeding a voltage dip of 20 percent or a frequency dip of 5 percent.

8. Demonst ete the ability to recover voltage and frequency to within 30 percent end 2 percent, respectively, of rated in less than 2 seconds.

C. Demonstrate the ability to accept the largest motor load as reasonable available without exceeding 20 percent of nominal generator terminal voltage and shall recover to 90 percent within P sectords V. Rated Load Test A. Demonstrate ability to load to ratPd loading of 2000 kw until operating parameters are equalized and hold for one hour without exceeding normal operating parameters of both engine and generator.

B. Demonstrate ability to lead to rated short tine loading and hold r for the design time without exceeding normal operating parameters - -, ~

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01424 '06 07:22 -IDtNUCLE4R LICENSING- FAX:512-072-0200 FACE 21 Sl'HL-AE-4977 Attachment 4 Page 3 of 5 VI. LoadRejectionTest A. Demonstrate ability to reject full design load without an engine trip.

B. Demonstrate ab111ty to reject reasonable motor loads without exceeding 20 percent of nominal generator terminal voltage and ,

recover to 90 percent within 2 seconds.

VII. Subsystem Tests A. Keep Warm system Demonstrate ability to maintain diesel within standby operatire parameters.

B. Controls

1. Demonstrate ability to smoothly control voltage and frequency.

2. Demonstrate ability to quickly shut down the diesel in case of an emergency.

C. Trips and Alarrrs Demonstrate all trips and alarms are functional.

VIII. Documentation A. Provide for review the following test records.

1. Normal operating logs taken during load testing.

2. A Pre test and Post test oil sample,

3. Fuel consumption at rated load.

B. Provide for review the following maintenance records.

1. Diesel o erating records since last overhaul.

2. Operatin tirre since last overhaul.

3. Lubricat on records.

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01dM 'oS 0752 IDtWCLEAR LicENSINC FAX:512-072-820e PAT 22'

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ST HL-AE-4977 Attachment 4 Page 4 of 5

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Alternate Diesel Generator Load Blocks l

The Alternate Diesel Generator load blocks were originally provided in the Engineer 1nu Test Guidelines for tie Vendor Site Testing and totaled 2000 KW.

The total Toading for the Alternate Diesel Generator is shown in Attachment 5 of this letter end is 1926 KW. Tte difference in the values of 74 KW is due to the different purposes of the two loading tables. ,

The load blocks from the Enaineering Test guidelines were developed as a gu'ide to specify the minimum blocE load required during Vendor Site testing and conservatively increased the first load block by 74 KW beyond that actually shown in Attachment 5. The testing :erformed at the vendor's site used block KW loads which equaled or exceeded t1e values listed in the Engineering Test guidelines.

The Load blocks listed on the Engineering Test Guidelines are the same es those which would be used when the Alternate Diesel Generator is required.

Table 1 provides a brcokdown of the Load Blocks. Load Block 1 essentially containt all 483 VAC Load Center and Motor Control Center miscellaneous motor and non motor loads connected to the cxisting step down transformers. Load Block I also includes transforner and cable losses. The remainder of the toad Blocks consist of the largo pump motors required to support Residual Heat Removal (RHR) operation with the last block loading the RHR pump motor. As these loads are nanually loaded by the operator, there can be some variation in loads for eac1 block cepending on the Unit Shift Supervisor's requirements.

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014Fo6 07:23 IDNUCEWtLicENSINC FAX:512-o72-8000 PAT 23 ST-HL-AE-4977 Attachment 4 Page 5 of 5 l

Table 1 Alternate Diesel Generator Load Blocks l

Load Load Description 'of Load Block in KW Number Block 1 564 KW Essentially all 480 VAC Load Center and Motor Control Center miscellaneous notor and non-motor (battery charger, electric heaters, etc.)1oads connected to existing step down transformers. This value also j includes transformer and cable losses.  ;

This block also ircludes Control Room Ventilation i equipment (e.g. EAS ESS chiller (150 Ton) and CR fans)

(Sec Note 1)

Block 2 579 KW Essential Con 11no Water (FCW) nump Block 3 635 KW Component Coaling Water (CCW) pump Block 4 222 KW Residual Heat Removal (RHR) pump I Total 2000 _J'.c .'y -

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• Note 1: Because of the diversity of the ludding in Block 1. the remdinder l of the Alternate Diesel Generator ca)acity (74KW) has been considered as part of this load blott, i

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AlTFRNATF ONSITF FMFRGFNCY POWER SOURCE LOAD LIST ,

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• ST-HL-AE 4977  ;

Attachment 5 Page 1 of 6 ,

Alternate Onsite Emergency Power Source Load List The alternate onsite emergency power cource is to be a temporary. non safety related, non seismically qualified diesel generator (NDG). The NDG will bc ,

used as a substitute for a Standby Diesel Generator to power a limited set of '

loads when offsito power is lost.

The primary scenario for which this unit is required establishes its minimum size. The essential functions to be supported are core cooling. On this basis, the Residual Heat Removal System and its support systems must be ,

powered The selec+. inn of components to be powered from the NDG shall be at the discretinn of the Uqit Shift Supervisor. A set of loads to address the -

function is In minimum addition to an shutdnwn RHR Pump cooling (per train). provided the loads insupport include Tablessystems A. B andasC.

follows:

- Essential Coolin Water (ECW) Pum and miscellaneous FCW loads - conis Cccponent Coolin Water

- Component Cooling Water (CCW) Pump - cools RHR

- EAB Chiller. Chilled Water Pump and Control Room Fans - cools the Control Room

- Containment Cubicle Exhaust Fan - cools the RHR Pump area

- Battery Charger - powers various DC controls and inverters for needed instrLmentation

- Poser Distribution Transformers - power miscellaneous AC controls Manual load managenent by plant operators can be performed as conditions warrant.

Table A B and C headings are as follows:

- LOAD NAPE - self explanatory and listed by bus, load center or MCC.

- BRKR. - the circuit breaker location on the bus, load center or MCC, KW LOA') - the wur>L cose loading (Modes 1 through 4 accidents / events) from Calculation EC 5002. Rev. 4. " Auxiliary Power System Load Study" and applicable change notkes.

- NOTES - are listed un the page follow 1ng Table C. 1 l

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o144 '06 o7G ' IDtNUCLIAR LICENSINC F @ 512-072-8200 IV E 26 '

$1.H1.AE 4977  ;

Attachment 5  :

Pago 2 of 6 Upon a Loss of Offsite Pcwer, the NDG will be manually started at the local control panel. The energization of the Engineered Safety Features bus will be l performed with the bus unloaded. -Once the Engineered Safety Features bus has ,

been energized, loads will be manually connected to the bus.

The ND3 is designed for connection to and loading from a dead bus only. In L this respect the NDG will operate in the 1sochronous mode. The recovery of an or to an SDG  :

will also be a dead bus recovery.ESF The newbus to the switch 0 earnormal Bus 12Zoffsite wi source the emergency the capability to synchronize across any of its breakers.

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ST-HI.AF 4977' i Attachment 5 i Pa0e 3 of 6 ' l Calculation No. EC4090 Revision DRAFT l

TABLE A  !

Train A Required Loads l

LOAD M NE BRKR. KW Loe NOTES 4.16 KV tus E1A  !

cm Pup ti am i EN PMD -

7 578.55 .

480 V LOAD n NitM blA1 EAB CHILLE4 (150 Ton) 3E__. PM

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i 400 V LOAD CENTER EIA2 M PMP 4C 222.12 400 V NCC E1A1 ~

BATT CHGR Al CIR 45.00 1,2 Pldt DISTR PNL XFMR 170 T3L 5 24 3  !

CR MAKE.U2 FAN P1 4.55 I

. CR CLE E UP FAN M1 13.16 CHILLED WTR PPP N3 40.20  ;

480 V MCC E1A2 PWR DISTR PNL XFMR 270 ML 6.22 3 I CCW PMP Cl2 FANS 82 3.92  !

_CM NIN AIM t AN 52 20.7)  !

480 V MCC EIA3, i PWR DISTR PNL XFMR 373 EFL 0.19 3 ECW SCA WAsti PMP 81 8.67 _ I ECW STRAINER A2 2.87 l ECW TRAVEL SCREEN F2 1.45 I

(CW Bl.0G VFAT FAN A1 6 58 ECW BLOG VthT FAN B2 6.58 480 V MCC E1A4 PWR DISTR Phl XFMR 470 J2R 9.52 ESSCHILLERRHAHU 03 2.91 CAE #U K3 31.15 BATT RN EXH FAN B3 3 87 i CTNT CUB EXH TAN Ell 4.10 SLBTOTAL LDADS 1.869,45 ESTI ETED LOSES (32) 56.08 4 TOTAL NDG LOADS 1.925.53

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01 4 4 '06 07:25' IDiMJCLEAR LICO61NC FAXs512-070-8208 PACE 29 ST HL-AE-49T/

Attachment 5

' Page 4 of 6 Calculation No. EC 5090 Revision ORAFT TABLE B 1 rain B Required Loads LOAD NAME BRUT . KW LOAD N01ES 4,16 KV BUS ElB CCW PMP _11 634.89 ECW PHP 7 578.55 400 V LOAD CENTER E181 EAB CHILLER (150 Ton) 3F 215.00 480 V LOAD CENTER F182 RHR PHP 28 222 12 480 V MCC E181 BATT CHGR B1 0?H 45.00 1.2 PWR CISTR PN. XFMR 170 Qll, ,,, . , , , , , , , . 4.25 3 CR MAKE-UP FAN N3 4.55 CR CLEAN UP FAN V3 13.16 CHIttED WTR PMP L2 40.20 480 V NCC E182 DWR DISTR PNI IFMR 770 A?! 9 31 3 CCW PHP CUB FANS B1 l92 L 480 V MCC ElB3 NR O!STR PNL IfMR 370 C3L 0.19 3 ECW SCR WASH PMP B1 8 67 1CW STRAINER A2 2 97 ECW TRAVEL SCREEN E2 1.45 ECW BLDG VENT FAN Al 6.58 ECW BLOG VENT FAN A3 6 5A 480 V MCC EIS4 PWR DISTR PNL KFMR 470 5?L 9.86 3 (55 C411LER RM ARJ A?  ? 91 CRE MJ K2 31.15 RATT RM FXH TAN 04 3.87 CTFT CUB EXH FAN 81 4 10 CR RTN AIR FAN F3 20.71 SLETUTS LOADS 1.969.89 ESTIMATED LOSES (3t) 56 10 4 TOTAL NDC LOADS 1,925.99

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01 4 4 '06 07:36 ID MJCLEAR LICENSIPC FAX:512-072-9200 r%CE- 20 ST-11L-AE-4977 Attachment 5 Page 5 of 6 Calculation No. EC-5090 Revision DPN T TABLE C Train C Required Loads LDAD MME BRKR. KW LOAD NOTES 4.16 KV BUS EIC CCW PHP 11 634.29 fCW PMP 7 578.55 400 V LOAD CENTER E1C1 RHR PMP 30 222.12 480 V LOAD CENTER E1C2 EAB CHILLER (150 Ton) AA 216.00 480 V MCC E1C1 BATT CvGR C1 02R 45.00 1.2 P.WR,DISTRPNLXFMR170 H3 4.25 3 CR MAKC UP FAN M2 4.55 CHILLED WTR PHP K3 40.20 480 V NCC E1C2 PWR DISTR PNL XFMR 270 A4L 9.21 3 ccW PHP ctlA FAUS R2 3 9?

480 V MCC E1C3 PWR DISTR Pht KFMR 370 C3L 0.19 3 ECW SCR WASH PMP B1 8.67 ECW 5 TRAINER A2 2.87 ECW TRAVEL SCREEN 02 1.45 ECW BLD3 VEhT FAN A1 6.58 ECW ELDG VEKi FAN C1 6.58 480 V MCC E1C4 PWR0!$TRPN.XFMR470 Dit 9.89 3 ESS CHILLER RN AHLI F3 2.91 CRE AHU K2 31.15 i CR RTN AIR FAN K1 20.71 CR CLEAM Up FAW H2_ 13.16 BATT RM EXH FAN C1 3.87 CTMT CLS EXH FAN C3L 4.10

$UBTOTAL LOADS 1.869.82 ESTINATED LOSES (31) 56.09 4 TOTAL NDG LOM)$ 1.925.91 1%C-N R2VS.001

01 4 4 '06 07:26 ID:MJCtIAR LICENSINC FAX 512-072-8200 TV E 30

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• j 51 HL AC-4977 l Attachant 5 Page 6 of 6 '

Calculation No. EC.5090 Revision DRAFT NOTES FOR TABLES A. B. C 1 Inverter load is included in the battery char 0er load. Therefore, the AC input to th! inverter and volta 0e regulating transformer are sWn as rero. The feeder breakers to these loads will not he tripped 2 Total DC loading per channel is equivalent to no more than one battery charger. Therefort, only one charger load is shown per train (Channel II or 0 is not required ~or f Train A).

3 Load on these transformers was conputed based on the connected load shown on one line drawings.

4 Estimated loses are 3% of SUBTOTAL - LOADS and include transforrers, cables, control comporents and all other electrical loses.

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ATTACHMENT 6  :

4 FNGINEERING TEST GulDELINES FOR ONSITE TESTING l l

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- i ST-HL-AE 4977' Attachment 6 -

Page 1 of 3 i POST INSTALLATION SITE TEST GUIDELINES FOR THE ALTERNATE DIE $EL GENERATOR UNIT (NDG) .

i These guidelines were developed for testing the referenced machine and should  !

be considered typical of the testing to be perfonned for application of the l

. Alternate Diesel Generatur (NOG)  ;

References:

Specification for the Teu rar Diesel Ge:erator

- WbashMDG4Instructiongnua I. Initial Conditions- i A. NDG installed l

B. Electrical interconnections (power, protective relay, instrument,  :

and control) properly connected.

l C. All NDG support systems (starting betteries, fuel oil, cooling water, keep warm system) lined up to support engine starting and leading.

• i II. Prerequisites A. Functional loop-checks on switchgear 12Z protective relaying ,

completed.

B. Schematic verification for power cables, grounding connections.  !

control and instrumentation cables completed.

C. Heggar checks to ground on NDG generator stator windings and connecting cables ccmpleted D. Fuel oil, cooling. and lobe oil levels verified adequate to support engine starting and loading.

E. Resistive load bank and associated step down transformer installed.  :

F. All automatic protective trip devices supplied with the NDG are ,

verified to be reset.  !

G. All vendor site testing is complete, f H. Permission to conduct test has been obtained from the Shift  !

Supervisor. -. . . - - - - - .

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IDiMX1DR LICENSING FAX 1612-o72-0208 DAE~ 33 l Sl-HL AE 4977 Attachment 6 Page 2 of 3 III. Test Guidelines  :

A. Initial diesel start:

Initiate a start signal, and verify that the NDG starts and ,

attains rated voltage and frequency  ;

Demonstrate ability,to smoothly control voltage and -_

frequency Verify proper phase rotation with respect to the 1K bus.

B. Operate diesel generator unloaded for 5 minutes. Monitor and record engine and generator operating parameters.

C. Close the NDG output breaker and demonstrate the ability to load to 1900 to 2100 Kii at a power factor oetween 0.9 and 1.0 (using a resistive load bank) until engine and generator operating l parameters are stabilized. '

D. Maintain diesel load at 1900 to 2100 KW at a power factor between 0.9 and 1.0 (using a resistive lood bant) for at least 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. '

Monitor and record engine and generator operating parameters.

Check accessible electrical connections with themography

after approximately 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

E. Unload the NDC and open the output breaker.  !

Allow the diesel to run unloaded for at least 2 minutes.

Monitor and record engine and generator operating parameters.

F. Shutdown the NDG.

G. Walkdown the NDG and verify no protective relay operations, abnormal leaks, or other unusual indications.

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01424 '06 07:29 IDiMJCLEAR LICENS!!C FAXsG12-072-820e f%CE 34 i

l ST-HL-AE-4977 Attachment 6 Page 3 of 3 H. Starting system tests (unloaded):

Demonstrate the ability of the NDG to start and reach rated and voltage and frequency at least 15 minutes after being disconnected from the outside AC power source. -

Demonstrate the capability of the NDG to reach rated voltage and frequency within 15 seconds from the initiation of the start signal I. Demonstrate the ability of the keep warm system to maintain the NDG within standby parameters.

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ATTACHMENT 7 l

FNGINEERED SAFETY FEATURES AUS CROSS-CONNECT DESCRIPTION l l

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Attachment 7  !

Page 1 of 2 ,

. ENGINEERED SAFETY FEATURES BUS CROSS-CONNECT DESCRIPTION t

thetollow1r.9describesthestepsreqWedtoconnectoneSouthTexasProject  :

Engineered Safety Features train to another Engineered Sa Features train.-  !

via toergency Bus IL. any two Auxiliary Engineered Safety tures Iranstonners, and the associated motor ated switches. is cross-connect i

scheme would be utilfred to provide Sta Diesel Generator-backed power to  :

the Fuel Handling Building HVAC heaters (1 4 kW per train) should no other  ;

preferred offs 1te power source or SUG-backed source be available, lhis  !

description sumar12es Ired actions following the postulated loss of AC l power to Engineered Safet features Buses A and B. The Initial conditions for  ;

this scenarlo 1nclude: (1 SDG A and 8 are out of service: (2) SDG C 1s In the t bldridby mode; (3) the N]G 15 available for serv 1ce; and (4) Class IE buses are supplied from offsite power. A loss of offsite power then occurs. '

followeJ by a fuel handling accident, the successful start of SDG C. and the succesbrul leading of SDG C. '

The specific steps required 1,0 cross connect two Engineered Safet buses are detailed in Addendtn 12 of STP procedurc OPOP04-AE-000)y *

. Loss features of Any 13.8 kV or 4.16 kV Bus". Tnis descripLlun, ougmented by une attached  ;

single line diagram, sumarizes the steps for cross connectiry Ergineered  !

Safety Features Dus C to Cngineered Safety Features Bus 8. The cross connect sequence includes opening the Engineered Safety Features Transformer E18 and Elc Motor Operated switches (MOS) [#1] from the preferred offsite power '

source: closing the ElB and E1C MOS units [#1] to the Emergency Bus Il source-closing the Emergency Sus IL feeder breakers E#2] to Engineered Safety

i Features Bases D and C: and closing the Engineered Safe;y Features Bus B and C l

nomal supply Enginecred Safety breaker Features [#3) Dus D is then energized from the SDG C.

out>ut ofto each  !

i The FHB HVAC loads may then be manually actuated and energized >y SDG C. The  !

NDG nay be used to energize either the required safety related loads (e.g.,  !

ECW CCW. RHR). or the FHB HVAC heaters, in the unlikely event that all three SDGs and/or the Engineered Safety Features Bus cross connect are unavailable. i i This cross-connect scheme was utilized in the docketed South Texas Project i position for Station Blackout, as described in the attachment to letter ST HL- i AE-3729 dated April 12. 1989. The NRC reviewed the cross connect scheme, and found it to be acceptable, as documented in Section 2.3.2 of the NRC Safety i Evaluation Report for Station Blackout in letter ST-AE-HL 92805 datcc July  :

17. 1991.

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ESF TRAIN CROSS-CONNECT FROM BUS E1C TO EITHER BUS E1A OR E1B -

8' BJS AUGNMENT SHOWN FROM E1C TO E1B 8i

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MOTOR MOTOR MCTOR 13.8 KV OPERATED , OPERATED BUS T I5 !

b , O,, SWITCH b ,b SWTCH @,U, OPERA SW1TCF ~ED W W AUX ESF W W AUXESF W N AUX ESF TO UN!T 2 ry 6 XFMRE1C & m XFMR E18 (T % XFhR E1C a g ,

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ATTACHMENT 8 REVISED PAGE 6 0F 14 FROM HOUSTON LIGHTING & POWER LETTER ST HL AE-4959 s

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ST-HL-AE-4977 Attachment 8 '

Page 1 of 1 TABLE 1-2 IMPACT OF PROPOSED POWER SUPPLY TECHNICAL SPECIFICATION CHANGES ON 1M)-TRAIN OR TWO CHANNEL SAFETY PELATED COUIPMENT REQUIRED IN MODES 5 AND 6 (Page 6 of 14)

Containment Current Technical Snecification (3.9.9)

Ventilation Requires valves and control channels for each '

Isolation ventilation penetration operable or penetrations must 4 Valves be Isolated to continue core alterations or fuel movement, or core alterations and fuel movement must be ,

suspended.

Prooosef Technical Snecification 3.8 Assessmen':

lie Normal Containment Ventilation Isola'; ion (CVI) valves are motor operated and one will be recuired to be closed it Irain A and B electrical distribution are not operable. The Supplementary Containment ventilation penetrations each have one air operated valve and do not require A.C. power to close. In a loss of all A.C. power, the Instrument Air compressors would be lost and thus the valves would 90 closed on a .

loss or air. Oxrab111ty of CVI actuation log 1c is not dependent on SD3 operability. Channel 1 (Train A) or  ;

III (Train B) power systems (batter 1es, Inverters and chargers) must be operable for the CVI actuation logic i system to be considered operable. .

i Consecuences of an Accident '

Isolation system l> placed Ira sore configuration (lines '

must be isolated or suspend core alterations ar.d fuel i movement) prior to the potential for accident  ;

occurrence, or accident is prevented by suspension of i activities that could lead to an accident. Therefore.  ;

there is no change in the consequences of and the potential for accident. l Fuel Current Technical Soarification (3.3.2)  :

Handling Requires both clannels operable, or operation of HVAC Building systen in filtered exhaust mode to move fuel, or -

Radiation suspension of fuel movement.  :

Monitors Prooosed Te:hn' cal Snecification 3.8 Assess.mmt '

Opera)11 ty not dependent on SDG opera)111ty. Both current and proposed Technical Specifications 3.8 -

require Channels I (Train A) & IV (Train C) power I system operable.

Qgitatences of an kcident backed. HVAC system is placed in Ponitors are sattery(operate in filtered exhaust mode to safe configuration 1

l move fuel over fuel pool) ur fuel movement over fuel - -

i 9001 is suspended prior to accident occurrence. i Therefore, there is no change in the consequences of an accident. '

1MW4%?90 001

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