ML18038A406
| ML18038A406 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 07/06/1988 |
| From: | Terry C NIAGARA MOHAWK POWER CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML17055D987 | List: |
| References | |
| NMP1L-0281, NMP1L-281, NUDOCS 8807120406 | |
| Download: ML18038A406 (72) | |
Text
,ACCELERATED Dl.BUT(ON DEMONS~~~REGULAT INFORMATION DISTRIBUTION~STEM (RIDS)ACCESSION NBR:8807120406 DOC.DATE: 88/07/06 NOTARIZED:
NO DOCKET¹FACIL:50-220 Nine Mile Point Nuclear Station, Unit 1, Niagara Powe 05000220 AUTH.NAME AUTHOR AFFILIATION TERRYiC.D.
Niagara Mohawk Power Corp.C RECIP.NAME RECIPIENT AFFILIATION gZ.Document Control Branch (Document Control Desk)
SUBJECT:
Responds to request for addi info on ATWS review re alternate rod injection 6 recirculation pump trip sys.DISTRIBUTION CODE: A055D COPIES RECEIVED:LTR g ENCL t SIZE: TITLE: OR/Licensing Submittal:
Salem ATWS Events GL-83-28 NOTES: RECIPIENT ID CODE/NAME PD1-1 LA BENEDICTgR I INTERNAL: ACRS NRR LASHER,D NRR/DEST/ICSB 7 NRR/DEST/RSB 8E NRR/DOEA/GCB 11 OGC 15-B-18 RES/DE/EIB EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1 0 1 1 RECIPIENT ID CODE/NAME PD1-1 PD HAUGHEY,M ARM/DAF/LFMB NRR/DEST/ESB 8D NRR/DEST/PSB 8D NRR/DLPQ/QAB 10 Ml.CT REG FILE 1 NRC PDR COPIES LTTR ENCL 3 3 1 1 1 0 1 1 1 0 1 0 1 1 1 1 1 1 h TOTAL NUMBER OF COPIES REQUIRED: LTTR 27 ENCL 21
NIAGARA MOHAWK POWER CORPORATION/301 PLAINFIELD ROAD, SYRACUSE, N.Y.13212/TELEPHONE (315)474-1511 July 6, 1988 NMP1L 0281 U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 Re: Nine Mile Point Unit 1 Docket No.50-220 DPR-63 Gentlemen:
Enclosed is Niagara Mohawk Power Corporation's response to the staff's request for additional information on ATWS review related to Alternate Rod Injection (ARI)and Recirculation Pump Trip (RPT)systems.This information has been provided informally through telephone discussions with the Nuclear Regulatory Commission staff which are documented in this letter.The Nuclear Regulatory Commission questions are contained in Attachment l.We are providing marked-up copies of the drawings the staff requested since.all design changes that are documented in Document Change Requests (DCRs)have not yet been incorporated in the drawings identified in Attachment 1.These marked-up drawings also incorporate our recent commitment to delete the three-second time delay in the Recirculation Pump Trip high pressure initiation logic.Very truly yours, NIAGARA MOHAWK POWER CORPORATION LW/pns 5126G Enclosures C.D.Terry Vice President Nuclear Engineering and Licensing xc: Regional Administrator, Region I Mr.R.A.Capra, Director Mr.R.A.Benedict, Project Manager Mr.W.A.Cook, Resident Inspector Records Management 8807120406 5000Z20 880706 Pop ADQCH, 0 pgU P 1 1 I' I,~0 0 0 OOOO'006 0008 OOOO 0009 0009 0 ttf 0 0 Ol!HII..I rf Oooj'008 0008 Oooj 006 008 OOL 009 009 00';;M,'t I jl I S'I t 008 008~OOI 0 Ol---.;j~rr=.f:;,.0',;" IA~I O CY~4 v v C~I-~o Cvl v\1111 OOO g O O 000 0 0 QI CO tv ltd IA I I I t I4 W1 ti 0~I v~I~I v~yg C.t I Ooooj 0006 0008 oooc 0009=-0009 Oooj 0008 0005 0 III 2 0 008 005 Clf III 0 OOT<O lv 0 o Ilt 2 III O CY D o O o CV O Cl)I III I O O I C IU C O III Q Itt Ir'D O C O C O IA'CII ttf tlat m Itf'0 O C O Itf V ttI 0 ttf Ih C 0 O.Itt Cl 065'~006 008 OOL 009 009 O 00 jt/g v~4 L t.'t q~tg I g y g.j~(0 Cft--I.I'tv'ir I--tt-'-.0 Cl Or ttf O'ke hvaBabl<~Aperture N~d\'~1111 I~1111 I'1t!I~I I I t lv'rvt v.=-I-l-I"1~~I I I O It L ttf O O I-ta E Itt N Ca, ef-O Ctl~tv I 0'g x 8 I C 2 w W Q C tff O Itj I Y e IA lA 0 0 oo CII Ss l3Q90&Q(
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FORM 112 2 A 0240 56.01-013 K.B.Thomas INTERNAL CORRESPONDENCE DISTRICT r~~v~-ZV~r/-<~<~8~'/N 7 NlAGARAl,l MOHAWK TO T.N.Roman DATE September 3, 1986 FILEGQDE SUBJECT RPSMG Set Vol tage Protec t ion Technical Specification 4.6.12b requires that the Reactor Protection System Motor Generator Set voltage protective instruments be set at:/J'K.B.Thomas Licensing Engineerover voltage<132,<4 seconds under voltage>108, 4 seconds This setting was selected to ensure that the voltage variation at the RPS components would be held to+10 percent of 115 volts.I In addition, Niagara Mohawk committed to identify which circuits required modifications to ensure that the GE recommended normal operating voltage of 115+2 volts at the RPS components be maintained.(Ref.T.E.Lempges letter to D.B.Vassallo, dated 12/15/83).
Licensing does not consider exceeding the recqmmended voltage of 115+2 volts to be a reportable event as long as the technical specification requirements and the 115+10'/.voltage commitment are met.He should, however, continue to pursue modifications to the RPS circuitry to achieve the GE recommended levels of 115+2 volts as soon as possible.P7$+Ji'c~7t~rife/jiP g jj P~,, p/84 wM IJ I f Jf'J KBT:saa 7063I xc: H..T.Barrett P.E.Francisco~3.J.Finrgr,='ty~
geo eye'-nAJ I/-/ver zoTechnical Information 2AO-113 January 1976 SPEC 200 RELAY CONTACT OUTPUT ISOLATOR GENERAL Relay type SPEC 200'ontact Output Isolators pro-vide an interface between low level dc system logic sig-nals and high level load switching circuits, In addition to the spdt relay contact output isolators described herein, two versions of solid-state contact output isolators are covered in Technical Information Sheet 2AO-110.'Ihe spdt relay contact output isolator, shown in Figure 1, mounts directly in a SPEC 200 nest.It occupies two spaces in the nest.This unit can accept up to four inputs, and provides isolated spdtirelay con-tacts for each.There is no electrical isola/on between the inputs.SPECIFICATIONS ,i~cT jc t,~'I~),"-4404 g Model Number: 2AO-L2C-RMounting: Refer to TI 200-275 Electrical Classification:
Ordinary locations Intrinsic Safety: See TI 200-255 Power Requirements:
+15 V dc a5/o, 40 mA maximum, per relay NOTE)yrotecttre corer Ior the loner tyclre terminate{re)oared Ior dally)moat he attached when drcolta ae alice Figure 1.spdt Relay Type Contact Output Isolator Voltage Drop Across Output Terminals:
Less than 0.5 ohms at rated load Output: spdt relay contacts INPUT B Input Signal(s):
+l5 V High: 10 V minimum from 550 ohms minimum source impedance Lows 0.5 V maximum from 50 ohms maximum source impedance Input Resistance; 500 ohms nominal (dc)i I I LOAO A I J I I~LOAD 8~l I J Output Load (maxim'um, resistive):
+120 Vac: 5A~;, 230 Vacs 2A~-" 28 V des 5A 40 Vdc: 1A 125 V'dcs 0.5A r Supply Voltage Effect: No error within normal operating limits Ambient Temperature Range: 5 to 50'C (40 to 120'F)INPUT C INPUT O+I I g-o I I L J 1 I LOAO C LOAO O I~I-Ambient Temperature Effect: No error within normal operating range Response Time: 10 milliseconds typical PRINCIPLE OF OPERATION Figure 2 is a schematic of the spdt relay contact output isolator.The relays are powered from the+15 volts dc bus-bar in the SPEC 200 nest, In each case a Figure 2.Circuit Schematic relay is connected in series with the power supply and associated input.When the resistance of the logic source is high, the relay is de-enetgized.
When it is low, the relay is energized.
Diodes across the relays reduce the effects of inductance at the time of switching.
OX&OR
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~~~
I ry/ML/TR control relays Operate Time (Series ML only)Time elapsed between energization and opening of closed contacts.12 milliseconds max.when latching pulse duration is: AC 80 milliseconds DC 25 milliseconds 6 milliseconds max.when unlatching pulse duration is: AC 40 milliseconds DC 20 milliseconds Transient Protection (Series TR only)A 1500 volt transient of less than 100 micro.seconds, or 1000 volts of less than 1 millisec-ond will not affect timing accuracy.Contacts Number of contacts 4 single pole double throw Nominal rating 10A120 volts AC (Series GP&TR)Typical pressure between moving contact and Normally closed contact: 30 grams Normally open contact: 100 grams (Series ML)pressure between moving contact and ally closed contact:.100 grams Normally open contact: Min.100 grams Contact resistance measured at terminals 250 milliohms O125V DC, 1 amp Life Load life-see chart page 18.Mechanical life-100 million operations.(Series GP&TR)10 million mechanical operations (Series ML)Coil Operating Voltage Series GP Nominal Coil Voltage , Minimum Pick.up voltage at 40'C Maximum voltage for continuous use For 380 vo!ts AC Use 6800 ohms 4 watt resistor in series with 220 volts AC relay For 440 volts AC Use 8200 ohms 6 watt resistor in series with 220 volts AC relay.DC 12 24 48 125 250 9.5 19 38 100 200 13.5 27 53 143 275 50/60 Hz 24 48 I 120~220 20 41 102 188 27 53 137 245 Coil dropout voltages are between 10%and 40%of the rated operating voltages for both DC and AC (Fol example: in a 120V unit dropout will occur between 12 and 48 volts.)DC relays will function with unfiltered DC from a full.wavtt bridge rectifier.
Series ML (b 15%)Nominal Voltage Pickup Drop out DC ohms Current (mA)DC ohms Current (mA)Code Letter G H AC 24 48 120 220 15 86 370 1500 625 312 125 68 83 286 1470 5800 250 125 50 28 D DC 12 24 48 125 with without with without with without with without R-C R.C R-C R-C R-C R-C R-C R-C 71 9 169 1333 72 10 168 1200 275 35 87 686 285 44.5 84 540 1132 132 42 364 1178 178 41 270 7220 1020 18.2 122 7130 930 17.5 134 Series TR (-100b+15oio)DC AC 24 VDC.120V 50-60 Hz 125 VDC Power Consumption SERIES GP Typical power consumption at rated voltage is: 6VA for AC coils 6 Watts for DC coils.There is no surge current during operation.
SERIES ML AC: 7.5W for pick.up 3W for dropout DC: without R/C network 15W for pick.up 13W lor dropout DC: with R/C network 2W for pick-up 2W for dropout SERIES TR Typical power consumption at rated voltage is: 6VA for AC coils 6 Watts for DC coils l 0 series P/ML/T.R,..."I".y":
/5 r'co y~rf'PS j/-Pyre'g Cvnenl w AMP$0.3 0 5 1 C 30 I$20~\5I"-io 5?2.5 2.5 5 7.5 10 120V 50ieoHt\ziVOC Load Life Characteristics, Voltag~540V AC 380V AC 380V AC 380V AC 220V AC 220V AC 220V AC 220V AC 220V AC 220V AC 220V AC Current (Am ps)15 10 3 x 3.3 20 15 10 3x6 2.5 Power Factor or Time Constant COS Ip~0.5 Resistive Resistive COS (p 0.8 Resistive COS (p 0.5 Resistive COSIp~0.8 Resistive COS ip~0.25 Number of Electrical Operations 15 000 10 000 20 000 20 000 400 000 200 000 1 500 000 3 000 000 2 000 000 Remarks 2 contacts in series 2 contacts in parallel 3hp motor 2 contacts in parallel 2 contacts in parallel 3hp motor Filament lamps 0.5 125V 125V oc oc<<~~>>Induetwe~ResisINe 2tov 2tov 50i50 50/50 Ht Ht insulation Resistance Between all no+connected terminals as well as betwetfn noneonnected terminals and the relay yoke: 1000 megohms at 500 volts DC.Ofefectric (Series GP&ML)volts RMS 60 Hz between points ecified above.ielectric (Series TR)2000 VAC between terminals and case and between mutually.isolated contacts.Operating Temperature Range O'C to 60'C (Series GP&ML)O'C to 50'C (Series TR)Dimensions nc es mm 1.77 t5 1.35 Q 220V AC 220V AC 120V D 48V DC 48V DC 1.25 1.5 10 1.5 Resistive Resistive Resistive Resistive 5 ms Shock (Series GP only)The relay, when kept energized by means of one of its own contact sets, will withstand 40g shock load when operating on DC, and 150g shock load on AC.Vibration (Series GP only)Single axis fragility curve data are available on request at frequencies from 5 Hz to 33 Hz.Mounting/Terminals 16 flat base pins.Screw terminal sockets are available.
ORDERING INFORMATION Catalog Number Code/Series GP and ML1500000030 000 000 20 000 000 1 000 000 18 000 000 with blowout device Agency Approvals UL Recognized, CSA Certified (Series GP&ML only)Weight Relay complete with cover: 103 oi.Net (Series GP&ML)11 oz.Net (Series TR)1.83 t9 a aia e 4.64 lie 30 IN Model Series AGASTAT'eries GP-Power Relay AGASTAT1 Series ML-Magnetic Latch Relay COII Voltage A-12VDC 8-24VDC C-48VDC D-f25 VDC F-250 VDC G-24V60Hz H-48V60Hz I-120 V 60 Hz J-220 V 60 Hz Options N-Magnetic 8fnwout Device Q-Ught to indicate coil 0nergizatfon (Not avaifabf0 on aff models.consult factory)R-fntemaf diode to suppress coil d00neigizati0n transient.(When used on DC unit, relay release time increases to the same value as the AC equivalent.)
'P Series Only See pages 20 and 21 for sockets 2nd other acc0550Iios.
t gs~erfd-A'PS (/-ger/8~e~NOTES OF TELEPHONE CONVERSATION CALL DATE-/s--6'TIME/'4-'~PROJECT+7 M4 FROM: W/ec./+oac H<e~N/eC I SUBJECT 4 8gpo-r~M.O./'Z'm TO: NAME Sar Z~~a/dc'~TITLE I)gi'/'~7/a'tpt g rIr/r/go'~g(e Pvr P>H o~lr-g 4I+/N'ADDRESS 9 o 5'6 d z-WE/I ec4~(.A QC7 Ciao e PEP-/8/O 6/gZ,
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e I RESISTANCE,-INDUCTANCE, AND INDUCTIVE REACTANCE (60 Hz)FOR 2/C (CLASS B STRAND)600 VOLT FIREWALL III CABLES (COLUMN"B" WALLS)Size AWG Wall 25 R90 Ohms er 1000'C-DC Ratio L mhenries per 1000'(60 Hz)Ohms er 1000'4 12 10 8 6 4 2 1 0 00 000 0000 250 300'350 400 450 500.030.030.030.045.045~045.045.055.055.055.055.055~065.065.065.065.065.065 2.73 l.72 1.08.679.428.269.169.134.106.0842.0668.0525.0449.0374.0320.0277.0247..0222 3.41 2.15 l.35.849~535.336.211.168.132.105.0835.0656.0561.0468.0400.0346.0309.0278 l.00.1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 l.00 l.00 1.005 1.006 1.009 1.011 l.014 1.018.093.0878.0827.0865.0815.0772.0736.0747.073.0715.0701.0688.0697.0687.0679.0673.0674.0663.035.033.031.033.031.029'028.028.028.027.026.026.026.026.026.025.025.025 NOTES: 1)R25 and R90-The single conductor resistance at 25 C and 90 C respectively.
0 0 Dou~le the values for total resistance.
2)AC-DC Ratio-The ratio of the resistance at 60 Hz to the DC resistance.
The factor includes correction for both skin and proximity effect.It is correct for cable in air or non-magnetic duct.3)L-The inductance in millihenries per thousand feet for one conductor.
Double the values for total inductance.
4)X-The.inductive reactance in ohms per thousand feet at 60 Hz for one conductor.
~o b~e the values for total reactance.
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I (?H CENT4AI.GVILPINO, ld SOVTH ST., SUITE 5, C ()Ikt'I I'i'lb.IV 5 WEST0040.MASS, 01551 (51T)355 1413 d 141d February ll, 1983 Niagara Mohawk Power Corporation 300 Erie Boulevard, West Syracuse, New York 13202@ATTN: Mr.R.Skow r Nuclear Design C-3
Dear Mr.Skow:
I In response to your questions on my letter dated April 12, 1978 to Mr.Whitford in reference to resistance and inductance for values of conductor resistance (at 25 C and 90 C), AC-DC resistance ratio (60Hz), inductance and inductive reactance (60Hz)for Firewall III cables in air or non-magnetic conduit.The values for inductance apply to either 2 conductor jacketed cable, or duplexed conductors.
For close random lay in a tray or conduit (two separate conductors), the values for inductance and inductive reactance should be increased by 208.(Resistance and AC-DC ratio will remain the same).The values for column"A" walls will be slightly higher for cabled or duplexed constructions, but will be about the same for random lay (plus 20%).If you have any questions, please contact me.I Very truly yours, THE ROCKBESTOS COMPANY~cM~c-ill3.Patterson Distrr Sales Manager WJP/lmrEncl.
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0 0 0 Doyle the values for total resistance.
2)AC-DC Ratio-The ratio'of the resistance at 60 Hz to the DC resistance.
The factor includes correction for both skin and proximity effect.It is correct for.cable in air or non-magnetic duct.3)4)L-The inductance in millihenries per thousand feet for one conductor.
Double the values for total inductance.
X-The inductive reactance in ohms per thousand feet at 60 Hz for one L conductor:
QoOlge the values for total reactance.
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