ML20094P337
| ML20094P337 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/26/1992 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20094P331 | List: |
| References | |
| NUDOCS 9204080027 | |
| Download: ML20094P337 (12) | |
Text
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mummauss ers 1UELECl RIC COMANCHE PEAK STEAM ELECTRIC STATION UNIT 2 CONTROL ROOM SIMULATOR 10CFR55 CERTIFICATION INITIAL REPORT l
l DATg 3/26/92 446 A ppg
l TABLE OF CONTENTS UNIT 1 CERTIFIC ATIO11 INITIAL REPORT _
SECTIOl3 PAGE TABLE OF C014TE11T3 i 1 GE11ERAL SIMULATOR INFORMATION 1-1 2 EXECUTIVE OVERVIEW 2-1 3 A118-3.5-1985 CHECI(LIST 3-1 4 SIMULATOR FACILITY OVERVIEW 4-1 5 INSTRUCTOR IllTERFACE 5-1 6 SIMULATOR TESTS Peal Time Test 6-1 Steady State and flormal Operations Tests 6-2 Transient Tests 6-5 11alf unction Tests 6-6
'7 SIMULATOR DISCREPANCY RESOLUTION SCHEDU.LE 7-1 8 FOUR-YEAR TEST SC11EDULE 8-1 UNIT 2 CERTIFICATI7N INITIAL REPOP.T 9 UNIT 1/2 DIFFERE11CES 9-1 i
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SECTION 9 UNIT 1/2 DIFFERENCES l -
. UNIT 1/2 DIFFERENCES 11mLSysititu
'Ihe plant ystems, contmis, and indications between Unit I and Unit 2 are essentially identical with the exceptions listed in Attaciunents 9 A and 9 B. The most notable dif ferences between Unit I and Unit 2 ate:
- 1. Westinghouse Model IM Steam Generators are used in Unit I while Westinghouse Model D5 Steam Genetatms are used in Unit 2.
- 2. Unit 2 will begin operations with an optimited fuel load.
'lhese dHferences ate not consideted to be of maior significance to the training or extunination pmcess. A discussion of this deteimination is provided in the Operational Characteristics section of this certification report.
Unit I and Unit 2 have some 3 hated equipment ti.e.; ilVAC, Chilled Water. Instrument Ah, ete.). This shared equipment is contiolled hem the Unit i Main Control lloatds, common llVAC panels, and local panels. The Unit 2 Main Controt Boards display redundant instrumentation and annunciation for any sh;ued equipment important for safe operation.
In summary, these ate no significant plant et system differences that would impact the training or extunination of USNRC licensed opetalots and those in license training for dual unit operaint licenses.
Itthnkal Snecificatimu Comanche Peak Steam Electric Station will utilize one set of Technical Specificationa for Unit I and Unit 2. No major differences exist which would interefere with the training or examination of USNRC licemcd operators or those in license training for dual unit operator licenses.
DIKr_ptine Procedures Since the equipment and systems utilized in Unit I and Unit 2 are essentially the same, the operating procedures ue essentially identical. 'Ihere are some minor procedural differenees , ,
due to equipment variations that are generally equipment maintenance stems versus operatmg chaiactoristics.
The Unit 2 Emergenev Operating Procedures and Abnonnal Operating Procedures are essentially the same as Unit I w ith minor differences existing in the setpoints for annunciation and actuation. These differences have been determined to be of minoi significance.
In sununary. there nie nn significant diffriences in ()perating, Emergency or Abnonnal procedmes that wouhlimpact the trainine et examination of USNRC licensed operators and those m licente ttaining for dual unit opetaf or licetv.es Page 9-1
Control R99fn Layniti i '1he Unit I mxl 2 Main Control Boards share a comnwn Contiol Room with a central conunami aint communicatons plationn and conunon back panels. 'the Main Control Boards are rotated ;
180 degiees from each other and ate Imt mitf or images. The layout of controls c 1 indications on the Immds are the same for both units except foi the conunon equipment operated from the Unit 1 boards as discussed in the Plant Systems section. There are minor differences in board engra"ings and labels that do not impace the infonnation presented to the operators. l i
in summaty, there are no significant control room layout differences that would impact the j traimng or exanunatmn of USNRC licensed operators and those in license training.
l Onerational Characteristics
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The minimal differences in the plant systems, technical specifications. operating procedures, and control mom layout of Unit I mul Unit 2 allow a transpaient transfer of operator Lnowledge and skills between units.
, Decause of the ditferences in Steam Generator design, some operational differences are
' nnticipated, particulary during operations which cause the phenomenon known as " Shrink and Swell." 4 CPSES has undertaken effxts to minimire the operator impact by relocating the water level taps on the Unit 2 Steam Generators. Annunciation and teactor protection system trips associated L with the Steam Generator water level ate slightly higher than those in Unit 1. and the shrink and swell in Unit 2 Steam Generators is anticipated to be somewhat more noticeable than in the Unit 1 Steam Generators. ,
Since the efrects of" shrink and swell" are well known and operator anticipated, the Steam Generator model diffenence is not considered to be of a major significance in the training or examination of USNRC licensed t.perators and those in license training for dual unit operator :
licenses.
Use of an optimized fuel design in Unit 2 actually relaxes core operating limits. CPSES has elected to operate under the more conservative liinits used in Unit 1. This minimizes operator impact and iequires knowledge of only one set oflimits during plant operation. Therefore, the traming or examination of USNRC licensed operators mal those in license training will not be -
significantly impacted by this difference.
In sununary, there are no significant opentional differences that would impact the tiaining or examination of USNRC licensed operators and those in license training for dual unit operator licenses.
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ATTACilMENT 9.A Page 1 of 5 !
UNIT DIFFERENCE
SUMMARY
I PART A I lisnt Difference Trainine Assessment 1 Use existing BlW connectors with the Rockbestos No impact. Transparent to cables for the Unit 2 heated junction thennocouple students, system outside containment.
2 Unit 2110t leg 'ihennow ells will not be installed. No impact. Transparent to students.
3 'Ihc Unit 2 condemate traefer pum is for the No impact. Simulator design Auuliary 11 oiler will not be installe( . assumes Unit 2 to be at full power.
4 Unit 2 will maintain the existing "Itowser" unit for No impact. Not simulated.
continuous oil purification for Turbine Lube Oil System.
5 Maintenance enhancement for Unit 2 pressure seal No impact. Not simulated.
valves (BW check valve modificationsk Maintenance
- itocedure for assembly / disassembly will differ setween Unit I and Unit 2.
6 Modify the Unit 2 personnel air lock. No impact. Not simulated.
7 Cap stem leak off lines, replace packing on valves. No impact. Not simulated.
8 Add a four inch gate valve in line 4-Cll-2-938 152-5. No impact. Not simulated.
9 Instmment air compressor in Unit 2 is fed from a No impact. MCC's are different motot cotittol center than the corresponding locally controlled by the compressor in Unit 1. instructor. Transparent to students.
io i e Rockbestos Firerone Appendix R one hour fire No impact. Not s mulated.
n :d cables in Unit 2.
i ' klete and plug mechanical seal vent and drain piping No impact. Not simulated.
and add isolation valve on Unit 2 RilR pump seal cooler retum line.
12 Replace existing gear type turbine genetator seal oil No impact. Transparent to pumps with screw type pumps in Unit 2. students.
13 Rewire SIS /BO trip contacts on 16 motor control No impact. Actuation of center circuits so that it disconnects all non-l E devices, equipment during an Si or BO condition unaffected.
14 Retain bion 7e valves in the Unit 2 Ciiculating Water No impact.
Priming System.
15 Upgrade Unit 2 '.oose Parts Monitoting System No impact. Only a " loose components fro a L PMS-1 to LPMS-IV. part" is simulated, not the LPMS component device.
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ATTACllMENT 9 A Page 2 of 5 UNIT DIFFEltENCE SUMMAltY PAllT A Item ])i((erence .Trninine Assessment 16 Change Unit 1 Circulating Water Pump Lube Wate No impact.
System piping from carbon steel to stainless steel.
17 Upgrade Unit 2 Reactor Coolant Pump seal design to a No impact.
catttidge type seal design.
18 Install Remote Terndnal Unit (RTU) in Unit 2 to No impact. Not simulated.
collect and transmit various Turbine Generator inf onnation to TUSOC.
19 Fisher valve plug replacement with 17 4 Pil material. No impact. Not simulated.
20 Add recirc line for Unit 2 Tutbine Plant Cooling Water DM-90-335 has been issued System. to update Unit I design to incorporate these changes.
Simulator design will be ulxlated to include those applicable changes.
21 Install bypass relief valve for Reactor Coolant Pump No impact. .
seal return telief valve 2-8121.
22 Replace sixteen 1600 mechanical plugs with 1690 No impact. Not simulated.
mechanical plugs in ' 'ni' 2 Steam Generators.
23 Cancel and remove Umt 2 ERP computer sytem. DM-92-017 will be issued to Tiansfer ERF foretions to plant computer. uixlate Unit I design to incorg orate these changes.
Simulate J ign will be updated to irstude those -
applicable changes.
24 Fit Unit 2 Incore thennocouples with lemo "11" No impact.
connectors in lieu of Lemo "A" of Conax detectors. -
25 Primary plant ESF Filte: Unit heater breakers are RDM-659 will be issued to powered from Unit 1 MCC's. power the heaters from conunon MCC's. Simulator design will be updated to incorporate the power supply nuxlitications when implemented into plant design.
26 Isolation dampers ate deleted from Unit 2 design and No impact. Instiuctor may ate not installed. The same dampers are installed in place the dampers in the Unit 1. Iluman factors concem. required position and remove thet11 froni service.
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ATTACllMENT 9 A l Pas:e 3 of 5 ,
UNIT DIFFEl(ENCE SUMM ARY l I pal (T A !
llIm Differencs Trainine Assessment 27 Install new and relocate existing temperatuie elemetiis DM 91-036 has been issued upstream of Auxiliary Feedwater to Steam Genereator to update Unit I design to llorg-Wamer check valves. incorpotate these changes.
The simulator design will be uixlated to include those applicable changes.
28 Install pennnvnt strain gages on approximately 105 No impact. Not simulated.
Unit 2 sising stem motor operated valves.
i 29 Smoke detectors in Unit 2 we Electro Signal Labs No impact. Transparent to 1 whereas Unit I has Nittan detectors. stu('ents. I 30 Undervoltage test switches 2-P113A iuni 2 Pil3C of No irnpact. Test swhches not both tiains are swapped relative to the equivalent Unit located on control board. .
I circuits. !
i 31 Modify RCP seal leakoff equiyment t to measure up to DM 91-031 has been issued 10 ppm versus the etaxnt limit of 6 ppm. to update Unit I design to incorporate these changen.
Simulator design will be ujxlated to include those applicable changes.
32 Install pressure taps in various Unit 2 systems to No impact. Not simulated.
accomodate 1)P testing of NOV's for Generic 1xiter 89 10.
33 U l xlate hydrogen gas dryer in Unit 2 to a dual tower No impact. Not simulated.
model.
34 Add chart recoider to the hydmgen flow totalizer for DM-91-035 has been issued the Unit 2 Main Generator. to update Unit I design to incorporate these changes.
Simulator design will le uixiated to include those applicable changes.
35 Add sta:or bar temperature monitoring system in Unit No impact If added to Unit 2 that will input to the plant computer. I design then simulator design will be updated to include those applicable char.ges Onay be included in i
DM-92 017).
36 Install temperature monitoring equipment on the Unit 2 DM-91-051 has been issued Main Tushin:. to update Unit I design to incorporate these changes.
Simulator design will be ulxlated to include those applicable changes.
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ATTACllMENT 9 A Yaue 4 of 5 UNIT DIFitEl(ENCE SUMM AlW pal (T A Juni Lufference Trainine Assesstnent 37 Install llentley-Nevada 3300 series vibration 1(DM-667 has been issued to inonitoring system e i the Unit Tmbine generator. ulxlate Unit I design to incorporate these changes.
Simulator design will be ulxlated to include those applicable changes.
38 Install electrically opeented hoist over the Unit 2 Diesel No impact. Not simulated.
Generators to facilitate maintemune activities.
39 The associated heater circuits for indicating lights Minor Mod-91-186 has been XI 331 l A, II, C & D (Main 1.ube Oil Tank lleatero issued to u[xlate Unit 1 on the Unit 2 Main Control floard do not function and design to incorporate these are deleted. changes. Simulator desig-will be updated to include those applicable changes.
40 The limit switch rantact conf... iation and wiring for No impact. Transparent to valves shown in Table "A"(Unit 1) are dif feient from students.
tinit 2.
4: Unit I has Conax strapon itTD's installed on the No impact. Not simulated.
ItCS. Unit 2 will utihre fly-Cal strap on 1(TD's.
<l2 Unit 2 Feedwater isolation Valves have on.line No impact. Not simulated.
calibration capability whereas Urut I does not.
43 Unit 2 Feedwatei llypass flow is gieater than Unit i Efforts are currently and requires different flow tiansmittens and Main underway to resolve this Control Board meter scales, dif fenence by installing the same meter scales in Unit 1 (DM-90-473). The slightly higher bypass flow in Unit 2
(~30.000 lb/hr) will not detract from student training.
44 Unit 2 lighting transformers are sated at 30 KVA. The No impact. Not simulated.
comparable Unit I lighting transfonners are iated at 45 KVA.
45 To prevent duplication of numbering. 6 lighting panels No impact. Not simulated in Unit 2 are labeled dif ferently than those in iInit 1.
46 Modify Diesel Generator building IIVAC o preclude No impact.
problems expeiienced during periods of low outdooi te111perattttes.
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ATTACliblENT 9 A Pnue 5 of 5 UNIT Dil'FEl(ENCE SUhlbl AltY PAltT A 111111 Dit ference Tiainine Assessment 47 The associated heater circuits for indicating lights Minor Mod-91 251 has been ZIA576,6577 and 6578 on the Unit 2 Main Control issued to uixlate Unit 1 Boaid have no function and are deleted. design to incorporate these changes. Simulator design will be u;xlated 1o include those applicable changes.
48 Unit 2 will utilite Ml/IIG.p ileat Trace cable for high No impact. Not simulated.
tem lrtature applications versus type TZ used in Unit 1.
49 1(eplace 2CW-0286 and 2CW 0287 with stainless No impact.
steel valves Minor Mod 91-273 will eliminate this dif ference.
50 incorporate an Emergency Response Data System in'o New I'iant Computer will be the design of the nrw Plant Computer System. installed in Unit 1 in 1993.
Simulator design v,ill be updated to include those applicable changes
( DM-92-017 ).
51 19 essure switch I'S 2-2483 and alarm window RDM-787 has been issued to 2-l'A-2483, along with associated wiring and tubing u;xlate Unit I design to a'e to le temoved incorporate these changes.
Simulator design ' vill le ujxlaed to include those applicable changes.
52 Iteplace 43 existing Magnatrol diain (iot level switches No impact. Not simulated, installed in high tempeinture cpplications.
53 Pmvide an interlock between the Diesel Generator No impact. Tianspaient to Stinting Air Compiessors and Afteicoole Fan Motois. students.
54 Unit 2 will add 3 :elief valves to the CVCS Charging No impact. Simulator design Pump Suction lines to preclude a potential does not include malfunctions overpressute condition. which would cause these relief valves to lift.
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ATTACllMENT 911 l' age I of 2 UNIT DilrITRENCE SUMM AlW
. PART 11 itup Difference ltaht m! i Assessment i Unit I and 2 have different 6.9KV transformer Difference not significant to connections. students.
2 Some 480V loads exist only on Unit 1. No impact. These loads are not simulated.
3 Unit I and 2 have different Plant hocess Computers. DM-92-Ol7 will be issued to update Unit I design to Unit 2 configuration. Simulator design will be updated to include those applicable changes.
4 Fuel storage and htuulling system have tuinor No impact. Not simulated.
dif feiences.
5 Seismic lustminentation is only located in Unit i No impact. Transpatent to although alarms appear on both Main Control Boards. students.
y 6 Unit 1 and 2 have different Loose Part Monitoring No impact. Only a " loose" System C JMS) revisions and powo connections. piut is simulated, not the
/ LPMS component device.
7 The circulating water to the five non-safety chiller Difference not significant to condensers is shated between Unit 1 imd 2. students (part of conunon ecluipment).
8A Unit 2 uses optimized fuel. Difference not significant to students.
8B Unit I has D-4 ste un generators while Unit 2 has D-5 Difference of minor steam generators. significance to students.
8C Unit I and 2 use different DNB conelations and No impact.
design limits.
8D Unit I has unused hot leg thenuowells while Unit 2 No impact. Trampuent to has none installed. students.
9 Unit 2 personnel airlock is different imm Unit 1. No impact. Not simulated.
10 Dual unit Technical Specifications svirh some Differene of minor (iifferences hetween units. significance to students.
I1 Diesel penerators have minor differcoces m component No impact. Not simulateil.
tagging, aftercooler fan interlocks, and vent / drain valves.
12 Steam generator blowdown systems have oilletent Difference not significant to imv:r nozzle blowdown lates. students.
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- ATTACilMENT 911 Page 2 of 2 UNIT DIFirEl(ENCE SUMM AltY l'AllT 11 htn1 Hifference Trainin t' Assessment 13 Unit 2 has a tecirculation line in the Turbine Plant DM-90-335 has been issue 41 Cooling Wate: System, to update Unit I design to incorporate these changes.
Simulator design will be updated to include those applicable changes.
14A ItCP seal retum relief bypass valve will be installed in No impact.
Unit 2.
140 Three charging pump suction relief valves will be No impact. Simulator design -
installed in Unit 2. does not include malfunctions which would cause these relief valves to lift.
14C RCP sealleak off measurement modifications will be DM-91-031 has been issued installed in Unit 2 before Unit 1. to update U .it I design to incorporate these changes.
Simulator design will be updated to include those applicab!r changes.
15 Some Safeguards Building Vent System isolation No impsct. Instructors may dampers ate not installed on Unit 2. place the dampers in the required position and remove them from service.
16 Unit 2 has an additional pressure switch in the Service No impact. Will be removce! -
Water backup to the Auxilary Feedwater System. from Unit 2 per DCA-95698.
,i 17 Some common eqmpment is operated from the Unit 1 Difference ofininor Main Control Bonds. significance to students.
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