ML20106J724
| ML20106J724 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/01/1985 |
| From: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8502190095 | |
| Download: ML20106J724 (3) | |
Text
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PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET
~ P.O. BOX 8699 PHILADELPHI A. PA.19101 -
WW N5#
swirtos t. oALTnorr ELacTnH: o c soM February 1, 1985 Docket Nos. 50-277 E0-278 Mr. John F. Stolz, Chief Operating Reactors Branch #4 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555
SUBJECT:
Peach Bottom Atomic Power Station Units 2 and 3 - Inservice Inspection (ISI)-Program First 120-Month Interval Program
REFERENCE:
Letter, J.
F. Stolz (USNRC) to E.
G. Bauer, Jr.,
(PECo) dated October 29, 1984
Dear Mr. Stolz:
The reference letter requested Philadelphia Electric Company to submit additional relief requests applicable to the first 120-month ISI program in accordance with 10 CFR
- 50. 55a (g) (5) (iv).
Subsequently, additional relief requests were submitted to the Commission in a letter dated December 21, 1984, S. L. Daltroff, PECo, to J. F. Stolz, USNRC.
In preparation for the performance of certain Class-2 System hydrostatic tests in accordance with the 1974 Edition through Summer 1975 Addenda of Section XI of the ASME code, we have identified one additional relief request for NRC consideration.
The relief request is as stated below.
1.0 Request for Relief 1.1 Components IIigh Pressure Coolant Injection (IIPCI) System and Reactor Core Isolation Cooling (RCIC) System - (ASME Code Class 2) 8502190095 8 Ok gDRADOCK05hohh77
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- Requirement'from Wh'ch-R'eliefIRequested:
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11.2' i
(System Pressure'. test'in'accordance with Article-IWC-45000Lwithfinspection perJIWA-5000._
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. Els3 JJustification L
1To"performLthe system hydrostatic pressureLtest to the
.1974 ; Codef requirements,; it : would be necessary. to :run E
,therHPCI-turbine driven booster'. pump /mainJpump
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combination'or'RCIC-iturbine; driven pumpfforla' minimum of: four/ hours beforeL performing the required s inspectiontin accordance1withMIWA-5000.
During the f'
Ifour-hour'run: time,Ethe, system ~hydrostaticLtest
. pressure, would be - held - at 100%f of. the nominalcsystem :
j Loperating: pressure'of 1,200fpsig.:
Except.for'approximately.20:feetJof pipe in each' i
' system in the outboard main: steam isolation valve.
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(MSIV) room, the HPCI and. RCIC pump. discharge : piping:
1 is'uninsulated.
The 1974 Edition of/theDCode~didrnot
. recognize that.a four-hour hold time for hydrostatic ~
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testing of uninsulated pipe 11s notfrequired..However,.
the.1980' Edition of Section XI of theASME Code L
recognizes that a four-hourihold time for uninsulated
-pipe is not required and that a hold time ^of. ten
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minutes is sufficientJfor'uninsulated piping; systems.
However, the 1980 Edition of the Code requires-the j.
' system hydrostatic pressure test to be 1.10 times > the; system design pressure for the HPCI-and'RCIC' systems.
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These systems are designed to inject water into the vess,el at a pressure equivalent to the highest
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l presture achieved in the reactor vessel during an
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operational transient which requires HPCI or RCIC 3
i-system operation.
This' pressure'is 1,275 psig which can result from an~MSIV closure withJa high. flux 3
scram. -Therefore, the system hydrostatic-test' pressure required, in accordance with IWC-5222(a) of' the 1980 Edition'of the Code,-would be 1,403 psig.
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~ Complying with the.1974' version.of this code would i
necessitate significantly longer test runs resultingl in; unnecessary wear and tear on'the HPCI'and'RCIC
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pumps.and onLthe' Residual Heat Removal system _ pumps.
J which'mustioperate'in the torus: water cooling mode for at least the same period-of time.
The requested i
relief would therefore obviate:the need:for more than.
sixteen' hours of' aggregate ECCS equipment operation per unit.
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's IMr. JohnJF.-Stolz February 1,'1985 Pige 3:
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-Testing ~in Lieu of Section XI' Requirements
' The IIPCI and' RCIC system _ hydrostatic pressure test will bel performed at a-discharge pressure of 1,403 psig'with a hold timelaf ten minutes,in accordance t
with-IWC-5000 with inspection per IWA-5000 as specified in Section XI of the 1980 Edition of the ASME code.
The in'sulated portion laf these systems will be hydrostatically tested using a hydrostatic test pump maintaining.the test pressure at 1,403 psig for four-hours'in1accordance with IWC-5000 with inspection per IWA-5000 as specified in Section XI of the 1980.
Edition of_the ASME Code.
If-you require any-additional information, please do nat hesitate.to contact us.-
Very truly yours,
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Lw s'Ry/' l Attachments cc:
T. P. Johnson, Resident Inspector f
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