ML20090B920
| ML20090B920 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 07/06/1984 |
| From: | Gucwa L GEORGIA POWER CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| NED-84-369, TAC-55488, TAC-55489, NUDOCS 8407130073 | |
| Download: ML20090B920 (12) | |
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7 Georgia Power Company 333 Piedmont Avenue Attanta. Georgia 30308 Telephone 404 526452G Ma*ng Address:
Post Off ce Bos 4545 Atlanta, Georgia 30302 h
Georgia Power L T. Gucwa tre southern eaxtnc system Manager Nuclear Eng;neenrg and Chief Nuclear Engineer July 6, 1984 Director of Nuclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Branch No. 4 Division of Licensing U. S. Nuclear Regulatory Camission Washington, D. C.
20555 NRC DOCKER 50-321 OPERATING LICENSE DPR-57 EDNIN I. HA'ICH N'JCLEAR PIANT UNIT 1 EQUIINEMP QUALIFICATION PROGIUM DEADLINE EXITNSION REQUEST FOR ATTS Gentleen:
In the past week Georgia Power Cmpany (GPC) decided not to replace the Plant Hatch Unit 1 Recirculation Syste piping during the upcming refueling outage.
The decision to replace the recirculation syste piping had been under evaluation for sme. time.
Our May 31, 1984, sutmittal on future recirculation syste pipe weld inspections and justification for continued operation with weld overlays contains many of the elments that went into that decision.
The upcming Unit 1 outage would now begin about the first of October and last approximately ten weeks. Consequently, under a shortened refueling outage, as is now envisioned, GPC will be unable to meet the regulatory requirement to ceplete installation of certain qualified electrical sluipnent. GPC believes that it has been in the forefront of the industry effort to meet the deadline requirenents of 10 CFR 50.49 (g) and has aggressively pursued bringing Plant Hatch into cmpliance with the envirornental qualification rule; however, we respectfully request an extension of the qualification deadline until Novenber 30, 1985, as detailed below so that the necessary equipnent installation can be cmpleted during the scheduled Unit 1 refueling outage next year.
As part of the effort to qualify electrical equipnent, GPC is planning to install a fully qualified General Electric Cmpany Analog Transnitter Trip Systen (ATIS) at Plant Hatch.
This new systen replaces a nmber of Reactor Protection Systen and other instr ments which could not be practicably qualified to GPC's satisfaction. Sme preliminary work for this installation is currently underway; however, the bulk of thin project can only be safely cmpleted with the plant in a cold shutdown condition.
b 8407130073 840706 DR ADOCK 000C0 i
r Georgia Power 1 Director of Nuclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Branch No. 4 July 6, 1984 Page 'IWo Current ATrS design calls for installation of 170 transmitters and Resistance Tenperature Detectors (RTDs) on Unit 1.
GPC has determined that only 31 of these instrments can be cmpletely installed and functionally tested during the allotted Fall 1984 outage time. GPC has reviewed the NRC requirunents and the Hatch ccmnibnents which are affected by ATrS installation and has determined which instrments should be installed during the upcming outage. Enclosure 1 contains a list of the ATrS trip units and transmi:ters which will be installed and operational at the end of the Fall 1984 Unit 1 refueling outage, barring any unforeseen difficulties.
the cmpletion of the ' urrently scheduled Unit 1 Fall 1984 Following c
refueling outage, GPC expects that 139 ATTS transmitters and R' ids and their associated trip units will not have been installed (listed in Enclosure 2).
Of these, 127 are being installed as qualified replacanents for equipnent itens which could not practicably meet the requirenents of 10 Cm 50.49.
%e next opportunity for installation of this renaining ATrS equipnent will be during the Unit 1 refueling outage scheduled to begin in Fall 1985.
Therefore, GPC re]uests that a qualification deadline extension to Novenber 30, 1985 be granted, under the provisions of 10 CFR 50.49 (g), for the existing Hatch-1 squipnent itens noted with "*" in Enclosure 2 to this letter.
GPC has made a diligent effort to meet the rajuirenents of 10 CFR 50.49 within the time prescribed in paragraph (g) of that rule.
Plant Hatch has enbarked on an extensive progran of backfitting and equipnent replacanent to ensure that all applicable equipnent meets the intent of 10 CFR 50.49.
In many cases GPC has performed costly and time-consuming replacenent of equipnent rather than relying on marginally-acceptable engineering analyses to prove that necessary equipnent would perform its intended function during an accident.
%e large equipnent replacenent effort which GPC has undertaken has been fraught with the types of schedule delays and other problens which plague the nuclear equipnent procurenent process.
The installation of Unit 1 ATIS was originally scheduled for the last Unit 1 refueling outage.
This was precluded by delays in the qualification and receipt of nearly all ATIS equipnent.
Several problens which occurred during testing of critical cmponents necessitated a change in manufacturer for sme of the systen transnitters.
In fact, qualification testing of the cmponents was not finalized until Decenber 1983.
In addition, the on-going installation of a similarly large ATIS on Hatch-2 has severely reduced the manpower available for preliminary design and installation work on Hatch-l.
(Plant Hatch Unit 2 is currently in a six month outage and will cmplete ATrS installation prior to return to service.)
700775
c Georgia Power 1 Director of Nuclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Branch No. 4 July 6, 1984 Page Three GPC believes that the superiority of ATrS over the sluipnent it replaces in terms _ of expected instrtsnent performance, as well as qualification assurance, ' outweighs the problens experienced during procurenent and installation.
The long-term gain in overall plant safety and performance expected fran ATIS justifies the short-term extension of the qualification deadline; also, GPC has submitted " Justifications for Continued Operation" of the plant using the instrunents which ATrS will replace.
If necessary, GPC wishes to meet with the NRC staff regarding this extension request on a mutually agreeable date as soon as possible. GPC has proposed July 17, 1984 as a potential date for such a meeting.
Sincerely yours, g X g-e L. T. Gucwa CBS/nb Enclosures xc:
J. T. Beckhan, Jr.
H. C. Nix, Jr.
J. P. O'Reilly (NRC-Region II)
Senior Resident Inspector 700715
EtCIOSURE 1 INSTRlNENP IDOP INEDRMATION TRAtEMI' ITER EtGINEERING TRIP UNIT OLD NBf SAFEGUARD VARIABLE IME(a)
MPL 10.
MPL PD.
MPL PD.
DIVISION GENERIC NAME MANUFACIURER FDDEL NO.(d)
- 11) Reactor Vessel Water B21-N695 B21-N042 B21-N09'5 EITS Differential Barton 764 Invel Inw (Level 3)
A,B A,B A,B Pressure Transnitter
- 12) Reactor Vessel Water B21-N027 B21-N027 ETS Differential Barton 764 Invel Indication Pressure Transmitter
- 13) Reactor Vessel Steam B21-N690 B21-N021 B21-N090 ECCS Pressure Barton 763 Dome Presmre Low A,D,E,F A,D,E,F A,D,E,F Transmitter InfES (a) Transmitters having the same MPL No. are tre same ecpipment providinj ceveral trip functions.
(b) To be included in the Unit 1,1984 cutage is all of the low low set logic mpporting hardware (ie: presm re switches, accum21ators)
(c) The lowered MSIV closure Reactor Vessel Water Invel Trip Setpoint bbdification is included.
DCIOSURE 1 INS'IRUMENT IOOP INKR1% TION TRA?EMI' ITER DEINEERING TRIP UNIT OLD NEN SAFEGUARD VARIABLE NAME(a)
MPL PD.
MPL 10.
MPL PD.
DIVISION GENERIC NAME MANUFAC'IURER bODEL BD. (d)
B21-N120 EX3 Pressure Rosanaant 1153 1)
Iow Low Set Arming B21-N620
~~~
A,B,C,D Transmitter Permissive (b)
A,B,C,D 2)
Law Low Set Control B21-N621
~~~
A,B,C,D B21-N120 BCCS Slave NA NA Permissive (b)
A,B,C,D B21-N122 IICS Pressure Rosanount 1153 3)
Low Iow Set Cbntrol B21-N622
~~~
A,B,C,D Transmitter Permissive (b)
A,B,C,D 4)
Reactor Vessel Water B21-N680 B21-N017 B21-N080 RPS Differential Barton 764 Invel Iow (Level 3)
A,B,C,D A,B,C,D A,B,C,D Presaire Transmitter 5)
Reactor Vessel Water B21-N693 B21-N017 B21-N093 ECCS Differential Rosertount 1153 Level liigh (Irvel 8)
A,B A,B A,B Presaire Transmitter 6)
Reactor Vessel Water B21-N693 B21-N017 B21-N095 IrG Slave NA NA Ievel fligh (Level 8)
C,D C,D A,B 7)
Rex tor Vessel Water B21-N681 B21-N024 B21-N081 RPS Differential Barton 764 Level Iow (Level 1) (c)
A,B,C,D A,B A,B,C,D Pressu re i
B21-N025 Transmitter A,B 8)
Reactor Vessel Water B21-N682 B21-N024 B21-N081 RPS Slave NA NA Invel Iow (Invel 2)
A,B,C,D A,B A,B,C,D B21-N025 A,B 9)
Pe r tor Vessel Water B21-N691 B21-N031 B21-N091 ECCS Differential Barton 764 Level Inw (Level 1)
A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter
- 10) Reactor Vessel Water B21-N692 B21-NO31 B21-N091 ECCS Slave NA NA Ievel Iow (Level 2)
A,B,C,D A,B,C,D A,B,C,D
ENCLOSURE 2 INSTRUMENT LOOP INFORMATION TRANSMITTER ENGINEERING TRIP UNIT OLD NEW SAFECUARD VARTABLE NAME,)
MPL NO.
MPL NO.
MPL NO.
DIVISION CENERIC NAME MANUFACTURER MODEL NO.(d) g
- 1) Steam Tunnel
- 2) Steam Tunnel
- 3) Steam Tunnel
- 4) Steam Tunnel
- 5) Reactor Vessel
- B'l-N641 B21-N021 B21-N090 ECCS Slave NA NA Pressure Low B,C B,C B,C
- 6) Reactor Vessel Steam B21-N678 B21-N023 B21-N078 RPS Pressure Rosemount 1153 Dome Pressure High A,B,C,D A,B,C,D A,B,C,D Transmitter
- 7) Reactor Vessel Steam B31-N679 B31-N018 331-N079 RPS Differential Barton 764 Dome Pressure Low A,D A,B A,D Pressure Transmitter
- 8) Reactor Shroud
- B21-N685 B21-NO36 B21-N085 ECCS Differential Barton 764 Water Level Low A,B B21-NO37 A,B Pressure (Level 0)
Transmitter
- 9) Main Steam Line A*
B21-N686 B21-N006 B21-N086 RPS Differential Barton 764 Flow High A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter
- 10) Main Steam Line B*
B21-N687 B21-N007 B21-N087 RPS Differential Barton 764 Flow High A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter i
ENCLOSURE 2 INSTRIBULNT LOOP INFORMATION TRANSMITTER ENGINEERING TRIP UNIT OLD NEW SAFECUARD VARIABLE NAME(*
MPL NO.
MPL CO.
MPL NO.
DIVISION GENERIC NAME MANUFACTURER MODEL NO.
- 11) Main Steam Line C*
B21-N688 B21-N008 B21-N088 RPS Dirferential Barton 764 Flow High A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter
- 12) Main Steam Line D*
B21-N689 B21-N009 B21-N089 RPS Differential Barton 764 Flow High A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter
- 13) Reactor Vessel
- B21-N690 B21-N021 B21-N090 ECCS Pressure Barton 763 Pressure Low B,C B,C B,C Transmitter
- 14) Drywell Pressure
- C71-N650 C71-N002 C71-N050 RPS Differential Barton 764 High A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter
- 15) Heat Exchanger
- Ell-N002 Ell-N002 ECCS Differential Barton 764 Shell to Tube A,B A,B Pressure Differential Transmitter Pressure Indicator
- 16) RHR Service Water E11-N007 Ell-N007 ECCS Differential Barton 764 Flow Indication A,B A,B Pressure Transmitter
- 17) RHR System Flow
- Ell-NOIS Ell-N015 ECCS Differential Barton 764 Indication A,B A,B Pressure Transmitter
- 18) RHR Pump Discharge
- Ell-N655 Ell-N016 Ell-N055 ECCS Pressure Barton 753 Pressure High A,B,C,D A,B,C,D A,B,C,D Transmitter
- 19) RHR Pump Discharge
- E11-N636 Ell-N020 E11-N056 ECCS Pressure Barton 763 Pressure High A, B,C,D A,B,C,D A,B,C,D Transmitter 763
ENCLOSURE 2 INSTRUMEET LOOP INFORMATION ENGINEERING TRANSMITTER TRIP UNIT OLD 5EW SAFECUARD g) g)
UARIABLE NAME MPL NO.
MPL NO.
MPL NO.
DIVISION CENERIC NAME MANUFACTURER MODEL NO.
- 20) RHR Pump Flow
- Ell-N682 Ell-N021 Ell-N082 ECCS Differential Barton 764 j
Low A,B A,B A,B Pressure Transmitter
- 21) Drywell Pressure
- Ell-N694 Ell-N010 E11-N094 ECCS Differential Barton 764 High A,B,C,D A,B,C,D A,B,C,D Pressure Transmitter E11-N011#
A,B,C,D 9
l
- 22) Core Spray Flow
- E21-N003 E21-N003 ECCS Differential Barton 764 Indication A,B A,B Pressure Transmitter
- 23) Core Spray Pump
- E21-N651 E21-N006 E21-N051 ECCS Differential Barton 764 i
Discharge Flow Low A,B A,B A,B Pressure j
Transmitter i
1
- 26) Core Spray Pump
- E21-N652 E21-N009 E21-N0;.
ECCS Pressure Barton 763 Discharge Pressure A,B A,B A,B Transmitter High
- 25) Core Spray Pump
- E21-N655 E21-N008 E21-N055 ECCS Pressure Barton 763 Discharge Pressure A,B A,B A,B Transmitter High
- 26) HPCI Pump
- E41-N650 E41-N027 E41-N050 ECCS Pressure Barton 763 Pressure High Transmitter i
j
- 27) HPCI Pump
- E41-N651 E41-N006 E41-N051 ECCS Differential Barton 764 Discharge Flow Pressure High Transmitter i
- 28) HPCI Pu=p*
E41-N008 E41-N008 ECCS Differential Barton 764 Flow Indication Pressure l
Transmitter
ENCLOSURE 2 INSTRUMENT LOOP INFORMATION TRANSMITTER ENGINEERING TRIP UNIT OLD NEW SAFECUARD MODEL NO.g)
VARIABLE NAME(a)
MPL NO.
MPL NO.
MPL NO.
DIVISION CENERIC NAME MANUFACTURER
- 29) HPCI Pump
- E41-N653 E41-N010 E41-N053 ECCS Differential Barton 764 Suction Pressure Pressure Low Transmitter l
- 30) HPCI Turbine Exhaust
- E41-N655 E41-N012 E41-N055 ECCS Differential Barton 764 Diaphragm Pressure A,B,C,D A,B,C,D A,B,C,D Pressure High Transmitter
- 31) HPCI Turbine Exhaust
- E41-N656 E41-N017 E41-N056 ECCS Pressure Barton 763 Pressure High B,D A,B B,D Transmitter
- 32) HPCI Steam Line*
E41-N657 E41-N004 E41-N057 ECCS Differential Barton 764 i
Differential Pressure A,B E41-N005 A,B Pressure l
High (+)
Transmitter
- 33) HPCI Steam Supply
- E41-N658 E41-N001 E41-N058 ECCS Pressure Barton 763 Pressure Low A,B,C,D A,B,C,D A,B,C,D Transmitter
- 34) HPCI Steam Line*
E41-N660 E41-N004 E41-N057 ECCS Slave NA NA Differential A,B E41-N005 A,B Pressure High (-)
l
- 35) HPCI Torus Water
- E41-N662 E41-N015 E41-N062 ECCS Capillary Barton 764 with Level High B,D A,B B,D Differential Model 352 Pressure Capillary l
Transmitter Sensors
- 36) HPCI Equipment
- 37) HPCI Pipe Room
- 38) RCIC Pump Discharge E51-N650 E51-N020 E51-N050 ECCS Pressure Barton 763 Pressure High Transmitter
ENCLOSURE 2 INSTRUMENT LOOP INFORMATION TRANSMITTER ENGINEERING TRIP UNIT OLD NEW SAFEGUARD VARIABLE NAME
- MPL NO.
MPL NO.
MPL NO.
DIVISION GENERIC NAME MANUFACTURER MODEL NO.
- 39) RCIC Pump Flow
- E51-N651 E51-N002 E51-N051 ECCS Differential Barton 764 High and Low Pressure Transmitter
- 41) RCIC Turbine Exhaust E51-N656 E51-N009 E51-N056 ECCS Pressure Barton 763 Pressure High A,C A,B A,C Transmitter
- 42) RCIC Steam Line*
E51-N657 E51-N017 E51-N057 ECCS Differential Barton 764 AP High (+)
A,B E51-N018 A,B Pressure Transmitter
- 43) RCIC Steam Supply
- E51-N658 E51-N019 E51-N058 ECCS Pressure Barton 763 Pressure Low A,B,C,D A,B,C,D A,B,C,D Transmitter
- 64) RCIC Steam Line*
E51-N660 E51-N01)
E51-N057 ECCS Slave NA NA I
LP High (-)
A,B E51-N018 A,B
- 45) RCIC Equip =ent*
E51-N661 E51-N023 - E51-N061 ECCS RTD Weed 1AOD A=bient Temperature A,B A,B A,B High
- 46) Torus Ambient
A,B,C,D A,B,C,D A,B,C,D E51-N664 E51-N027 E51-N064 ECCS RTD Weed 1AOD A,B,C,D A,B,C,D A,B,C,D
- 47) Torus Ambient
ENCLOSURE 2 INSTRUMENT LOOP INFORMATION TRANSMITTER ENGINEERING TRIP UNIT OLD NEW SAFEGUARD g)
MODEL NO. (d)
VARIABLE NAME MPL NO.
MPL NO.
MPL NO.
DIVISION GENERIC NAME MANUFACTURER
- 48) Torus Differential
- E51-N665 E51-N604 NA ECCS NA NA NA Temperature High A,B,C,D A,B,C,D
- 49) RCIC Pu=p Suction E51-N683#
E51-N006 E51-N083 ECCS Differential Barton 764 Pressure Low Pressure Transmitter
- 50) RCIC Turbine Exhaust
- E51-N685 E51-N012 E51-N085 ECCS Differential Barton 764 Diaphragm Pressure A,B,C,D A,B,C,D A,B,C,D Fressure High Transmitter
- 51) Cleanup Flow to*
G31-N012 G31-N012 ECCS Differential Barton 764 Condenser Indication Pressure Transmitter
- 52) Cleanup Flow From*
G31-N036 G31-NO36 ECCS Differential Barton 764 Vessel Indication Pressure Transmitter
- 53) Cleanup Flow From*
G31-N041 G31-N041 ECCS Differential Barton 764 Vcssel Indication Pressure Transmitter
A,D,E,H, A,B,C,D A,D,E,H, J,M E,F J,M
- 55) RWCU Area Ventilation
- G31-N663 G31-N602 NA RPS NA NA NA Differential A,D,E,h, A,B,C,D, High J,M E,F
- 56) RWCU Room Outlet * ##
G31-N662 G31-N022 G31-N062 RPS RTD Weed 1AOD Ambient Temperature A,E,D,H, A,B,C,D, A,D,E,H, High J,M E,F J,M G31-N016 RPS A,B,C,D, E,F
ENCLOSURE 2 NOTES
- Deleted from plant. Functions of Ell-N0llA,B,C,D assigned to Ell-N010A,B,C,D.
- Instruments for which a 10 CFR 50.59 extension is requested.
a Transmitters having the same MPL No are the same equipment providing several trip functions.
b The complete RTD model number for all present ATTS applications is:
1AOD/611-1B-C-6-C-2-A2-0
- Transmitter G31-N016A,B,C,D,E.F are being deleted from the plant by ATTS. Their safety-functions are being performed by G31-N062A,D,E,H,J,M under the new installation.
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