ML20065T214
| ML20065T214 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 12/10/1990 |
| From: | Basilio J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9012270344 | |
| Download: ML20065T214 (6) | |
Text
._
10 CFR 50.552-J PHILADELPHIA ELECTRIC COMPANY NUCLEAR GROUP HEADQUARTERS 955 65 CHESTERBROOK BLVD.
WAYNE, PA 19087 5691 (as s) sao sooo 7
' December 10, 1990
. Docket Nos.
50-277 50-278 License Nos. DPR-44 DPR-56 U.S.. Nuclear' Regulatory Commission Attnt-Document Control Desk:
Washington,aDC 20555
SUBJECT:
Peach Bottom Atomic Power Station, Units 2 and 3 l Inservice Testing Program
REFERENCE:
(1)( Letter? from:-J. W. Gallagher (PECo) to W. R. Butler (NRC) dated June 29, 1988 (2)- Letter.from G.-A.' Hunger,-Jr.-(PECo)-to U.S.; Nuclear Regulatory--Commission-dated September 11,'1990
Dear-Sir:
u L
' Enclosed for your-review and approval is Relief Request b
GPRR-3 and the' associated. pump-~ table' changes.
This is'an update to-l'
'the Inservice Testing-(IST) Program previously submitted in' Reference (1)'.
GPRR-3_requects relief from the ASME Codei
.requirementifor~ flow. instrument accuracy to be +2% of full;scaleifor
-selected pumps./ This Relief Request-applies to the Diesel Puel Oll LTransfer. pumps, the Emergency Service-Water-(ESW) pumps,.the.'ESW-
-booster pumps and the Emergency. Cooling Water'(ECW) pump.
PhiladelphiaLElectric Company-(PECo) plansLto'use' ultrasonic flow instrumentation for these pumps.
This letter also withdraws-Relief Request 50-PRR-1,.upon approval of Relief Request GPRR-3. -Relief Request 50-PRR-1 applies 1
-to the. Diesel Puel Oil Transfer pumps.
This Relief Request was 9012270344 901210 PDR ADOCK 05000277 PDR P.g
'{
U.S. Nuclear Regulatory Commission
-December
.0, 1990 1
Page 2 included'in Reference (1), and' allows flowrate to be measured by changing tank level per unit time.
Once'GPRR-3 is approved and ultrasonic. flow measurement is an acceptable technique, the alternate testing method requested in 50-PRR-1 will no longer be needed.
In Reference (1), PECo submitted Relief Requests 33-PRR-1 and 48-PRR-1.
These requested relief from the flow measurement requirements for the ESW pumps, the ESW booster pumps and the ECW pump until modifications could be completed to allow flowrates to be measured.- In Reference (2), PECo committed to completing the modification during the next Unit 2 refueling outage which is currently scheduled to start in January 1991.
The proposed modification is designed to allow the use of ultrasonic flow instrumentation; however, relief is still necessary for the +2%
accuracy requirement.
Accordingly, PECo requests that the enclosed GPRR-3 be approved by February 22, 1991.
This will ensure that startup from the next refueling outage will not be impacted.
If you have any questions, please do not hesitate to contact us.
Very truly yours, annulY ct 0
nager, Licensing Nuclear Engineering & Services
-Enclosure cc:
T.-T.
Martin, Administrator, Region I, USNRC J. J. Lyash,-USNRC Senior Resident Inspector C.- Ransom, EG&G Idaho i
PBAPS 2&3 IST PpCgram App 3ndix B-
, = -
RELIEF REQUEST'NO. GPRR-3 PUMP (S):
Diesel Fuel Oil Transf er 0AP060 OBP060 OCP060 ODP060 Emergency Service Hater 0AP057 OBP057 Emergency Service Water 0AP163 (Booster Pumps)
OBP163 Emergency Cooling Hater 00P186 i
TESTING REQUIREMENT (S): Pump ins trumen ta ti on accuracy shall be within the limits specified in ASME Section XI subsection IHP Articles IWP-4110 and IHP-4120, BASIS FOR RELIEFI PECo proposes to measure flow using ultrasonic flow instrumentation that is calibrated to an accuracy-within 15%
of-reading instead of the Code required-12% of-full-scale.
Although this equipment-does not meet.the Code requirements exactly. i t meets the intent of the Code by ensuring that data collected _ during inservice testing is measured to the degree of._ accuracy specified in Articles INP-4110 _and IHP-4120.
Because the-Code-does not address digital -instruments and of-reading accuracy limits, a conversion from full-scale accuracy to of-reading accuracy is necessary to compare the ultrasonic instrument. accuracy to -the accuracy specified in the Code.
Also, because the ultrasonic: flow-transducers are capable of measuring flow over the entire range of the instrument-(0 to 40 feet /second), a percentage of full-scale accuracy would be meaningless when measuring low flow rates associated with snall diameter-pi pes. To ensure that the most - accurate data is collected during inservice _ testing, the technicians are provided guidance through the - vendor -manu21s to select the transducer that is best suited for the pipe Nhore flow is being measured.
For instruments to be in compliance wi+h ASME Section XI Subsection IHP, two requirements must be satisfied. The first requirement (specified in INP-4110,.Tablo IHP-4110-1) states that flow instrumentation must be' accurate to-within 22% of the full-scale value) the second requirement (specified in IHP-4120) states that "the full-scale range of each instrument shall be three times the reference value or-less." PECo's interpretation of these requirements ellows for establishing a maximum of-reading error of 16% that would be acceptable per the code.
Magnetic flow meters, which provide grea ter; accuracy, -were considered. However, because the magnetic flow meters are not seismically qualified, they are not suitable for use in the required applications. Also, installation of these meters would require significant piping modifications.
PECo considers that the ultrasonic flow instruments provido l
the necessary accuracy for pump performance trending purposes L
and to detect pump degradation. Also, we consider that we meet l
the intent of'the code since the ultrasonic flow instrument l-I l
I
PBAPS 283 IST Pr2 grim App;ndix B RELIEF REQUEST NO. GPRR-3 (cont'd) is accurate to within 15% of reading. Although the existing method o f measuring flow is accep table (i.e.. measuring change in tank level es a function of time), ultrasonic flow measuremont provides more accurate data.
ALTERNATE TESTING Uso ultrasonic flow instrumentation, which is accurate to within 15% of-reading, for measuring IST flow data, J
mt\\mem\\ist\\pbaps\\gprr 3
9
'IST TABLE - PUMPS PAGE NO.: 1 PEACH BOTTOM ATOMIC POWER STATION - UNIT # 2 & COMMON CATE: 11/07/90 PUMP TEST RELIEF PUMP NAME OR DESERIPTION
- 10. No.
Pa!D COORD. PARAMETERS RE00EST REMARKS CORE SPRAY (CS) 2AP037 M-362(SHT 1) D-6 Pi, D/P, Q, V, GPRR-1, GPRR-2 L/P CORE SPRAY (CS) 2BP037 M-362(SHT 1) D-3 Pi, D/P, 0, V, GPRR-1, GPRR-2 L/P CORE SPRAY (CS) 2CP037 M-362(SHT 1) D-4 Pi, D/P, 0, V, GPRR-1, GPRR-2 L/P CORE SPRAY (CS).
2DP037 M-362(SHT 1) D-2 Pi D/P, 0, V, GPRR-1, GPRR-2 L/P DIESEL FUEL O!L TRANSFER OAP060' M-377(SHT 4) G-6 Pi, D/P, 0, V, GPRR-1, GPRR-2, L/P GPRR-3 DIESEL FUEL CIL TRANSFER 08P060 M-377(SHT 4) E-6 P i, D/P, 0, V, GPRR-1, GPRR-2, L/P GPRR-3
. DIESEL FUEL CIL TRANSFER DCPD60 M-377(SHT 4) D-6 Pi, D/7, Q, V.
GPRR-1, GPRR-2, i
L/P GPRR-3 I
DIESEL FUEL OIL TRANSFER ODP060 M-377(SHT 4) B-6 Pi, C/P, 0, V, GPRR-1, GPRR-2, L/P GPRR-3 EMERGENCY COOLING WATER 00P186 M-330(SHT 1) G-4 Pi*, D/P, V, 48-PRR-1,
- CALCULATED INLET PRESS. (TEXT (Ecu)
C**, L/P GPRR-1, GPRR-2, 5.1.1).
- 48-PRR-1 WILL EXPIRE GPRR-3 WHEN MOD 5110 IS COMPLETE.
EMERGENCY SERVICE WATER OAP057 M-315(SMT 1) F-7 Pl*, D/P, V, 33-FAR-1,
- CALCULATED INLET PRESS. (TEXT (ESW)
C**, L/P GPRR-1, GPRR-2, 5.1.1).
- 33-PRR-1 WILL EXPIRE GPRR-3 WHEN MOD 5110 15 COMPLETE.
EMERGENCY SERVICE WATER OSP057 M-315(SHT 4) A-5 Pi*, D/P, V, 33-PRR-1,
- CALCULATED INLET PRESS. (TENT (ESW)
Q**, L/P GPRR-1, GPRR-2, 5.1.1).
- 33-PRR-1 WILL EXPIRE GPRR-3 WHEN MOD 5110 IS COMPLETE.
t I
~
w r
IST TABLE - PtMPS PAGE NO.: 2 PEACH BOTTOM ATOMIC POWER STATION - 1)N!T # 2 & COMMON DATE: 11/07/90 PtmP TEST RELIEF PUMP NAME OR DESCRIPTION
- 10. NO.
P11D COORD. PARAMETERS
' REQUEST REMAR(S EMERGENCY SERV!CE UATER OAP163 M-330(SHT 1) E-6 Pi, D/P, V, 33-PRR-1, "33-PRR ' UILL EXPIRE BOOSTER C**, L/P GPRR-1, GPRR-2, UNEN MOD 5110 IS COMPLETE.
GPRR-3 EMERGENCY SERVICE UATER OBP163 M-330(SHT 1) D-6 Pi, D/P, V, 33-PRR-1,
- 33-PRR-1 UILL EXPIRE B00SIER C**, L/P GPRR-1, GPRR-2, UHEN MOD 5110 IS COMPLETE.
GPPR-3 P!GH PRESSURE COOLANT 20P033/038 R-366(SHT 1) F-6 N, Pi, D/P, o, GPRR-1, GPRR-2 INJECTION (HGCI)
V, L/P HIGH PRES 5URE SERVICE 2APO42 M-315(SHT 1) A-7 Pi*, D/P, Q, V, GPRR-1, GPRR-2
- CALCULATED INLET PRESS. (TEXT UATER (HPSU)
L/P 5.1.1).
HIGH PRESSURE SERVICE 2BPO42 M-315(SHT 1) A-5 Pi*, D/P, Q, V, GPRR-1, GPRR-2
- CALCULATED INLET PRESS. (TEXT WATER (HFSU)
L/P 5.1.1).
HIGH FRESSORE SERVICE 2CPO42 M-315($HT 1) A-6 Pi", D/P, 0, V, CPRR-1, GPRR-2
- CALCULATED INtFT PRESS. (TEXT UATER (HPSU)
L/P 5.1.1).
HIGH PRESSURE SERVICE 20PO42 M-315(SHT 1)
A-4 Pi*, D/P, Q, V, GPRR-1, GPRR-2
- ALCUL ATED IktET PRESS. (TEXT UA1ER (HPSU)
L/P 5.1.1).
REACTOR CORE ISCLATION 20P036 M-360(SHT 1) E-7 N, Pi, D/P, 0, GPRR-1, CPRR-2 COOLING (RCIC)
Y, L/P RESIDUAL HEAT REMOVAL 2SPMS M-361(SHT 2) C-5 Pi, D/P, 0, V, GPRR-1, GPRR-2 (RHR)
L/P RESIDUAL HEAT REMOVAL 2CPO%
M-361tSMT 1) B-5 Pi, D/P, 0, V, GPRR-1, GPRR-2 (RHR)
L/P RESIDUAL HEAT REMOVAL 2DPtSS M-361(SHT 1) A-5 Pi, D/P, 0, V, GPRR-1, GPRR-2 (RHR)
L/P RESIDUAL HEAT REMOVAL assist H-36t(SHT 1) -S-5 Pi, D/P, 0, V, GPRR-1, GPRR-2 (RHR)
L/P
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