ML19345E153
| ML19345E153 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 12/18/1980 |
| From: | Parker W DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8012230345 | |
| Download: ML19345E153 (3) | |
Text
,.
DUKE POWER COMPANY Powza Batmwo 422 SocTn Cucacu Stazzi, CnAnt.orre, N. C. asa4a muru o. P4anca. s a.
December 18, 1980 VsCE PetSiotNT it' t*=Cm t: An ta 7C4 5ttama Peoowctio=
3 7 3- *C e 3 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 i
Attention:
Mr. B. J. Youngblood, Chief Licensing Projects Branch No. 1
Reference:
McGuire Nuclear Station Docket Nos. 50-369, -370
Subject:
Inservice Inspection of Reactor Coolant System Pressure Isolation Valves
Dear Mr. Denton:
As requested on December 10, 1980 by Mr. Tony Cappucci of your staff, the following additional information is provided in regard to the Reactor Coolant System pressure isolation valves for McGuire Nuclear Station Unit 1.
This letter supplements our submittal on November 24, 1980, 1.
The valves listed in the attached revised list of Reactor Coolant System pressure isolation valves will be defined as Category A.
2.
In regard to Item 5 of our letter of November 24, 1980, the integrity of the Class B piping in the reactor coolant hot leg safety injection lines will be verified initially and
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wi,th an inservice inspection program consisting of a Class 2 hydrostatic test.
Note that valves NI121A and nil 52B were
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de~ signed to be reactor coolant isolation valves and are qualified to withstand reactor coolant system design pressure.
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Mr. Harold R. Denton, Director December 18, 1980 Page Two 3.
The attached list of Reactor Coolant System pressure isolation valves has been revised to include additional valves in the cold leg accumulator discharge lines.
4.
The lines from the boron injection tank are designed to with-stand full Reactor Coolant System pressure and do not form an interface between the high pressure Reactor Coolant System and the low pressure system, however, since these lines are Class B piping, the integrity of this piping will be verified initially and with an inservice inspection program consisting of a Class 2 hydrostatic tese.
It should be noted that valves in these lines were also designed to withstand reactor coolant system design pressure.
Please advise if you have additional questions.
t Vep truly yours,
/
m
.Uw- - 6. i, 12
' William O. Parker, Jr.
LJB:scs Attachment i
i l
Table 3.4-1 Drawing No./
Valve Number Function MC-1562-2.0 INI60 Accumulator Discharge 1NI71 Accumulator Discharge 1NI59 Accumulator Discharge INI70 Accumulator Discharge MC-1562-2.1 INIS2 Accumulator Discharge 1NI94' Accumulator Discharge INI81 Accumulator Discharge INI93 Accumulator Discharge MC-1562-3.0 1NI121A*
Safety Injection (Hot Leg)
INI152B*
Safety Injection (Hot Leg)
INI160 Safety Injection (Hot Leg)
INI157 Safety Injection (Hot Leg)
INI134 Safety Injection (Hot Leg)
INI126 Safety Injection (Hot Leg)
MC-1562-3.1 INI165 Safety Injection / Residual Heat Removal (Cold Leg)
INI167 Safety Injection / Residual Heat Removal (Cold Leg) 1NI169 Safety Injection / Residual Heat Removal (Cold Leg)
INI171 Safety Injection / Residual Heat Removal (Cold Leg)
INI175 Safety Injection / Residual Heat Removal (Cold Leg) 1NI176 Safety Injection / Residual Heat Removal (Cold Leg)
INI180 Safety Injection / Residual Heat Removal (Cold Leg)
INI181 Safety Injection / Residual Heat Removal (Cold Leg)
MC-1562-4.0 INI250 Upper Head Injection i
1NI251 Upper Head Injection 1NI252 Upper Head Injection 1NI253 Upper Head Injection 1NI249 Upper Head Injectica INI248 Upper Head Injection i
MC-1561-1.0 INDIB**
Residual Heat Removal IND2A**
- Reverse Pressure Tested
- Testing per Section 4.4.7.2.2.d not applicable due to positive indication of valve position in Control Room.
..