ML17256B042
| ML17256B042 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/10/1982 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| IEB-79-01B, IEB-79-1B, NUDOCS 8206160161 | |
| Download: ML17256B042 (4) | |
Text
R E G U L A T 0 I N F 0 R >> A T I0 iV DI S T R I8 rJ TI0 N S T E'
( R I0 S )
SUBJECT:
Discusses corrmitment to install environmentally qualified items by 8?0630.Several solenoid valves R resistance temp detectors could not be completed during current outage<but will be installed during Spring 1983.
DISTRIBUTION CODE:
h048S COPIES RECEIYED:LTR ENCL TITLE: Equipment (lualification (OR L PRE-OL)
SIZE:
NOTES: iN'RR/DL/SEP 1 cy ~
ACCE.SSIOiV NOR: R206160161 OOC ~ DATE: 82/06/10 NOTARIZED:
- NG FACIL:50-244 Rober t Errrnet Ginna fluclear Pl anti Unit li Rochester G
AUT'rl NAr'-E AUTHOR AFFILIATION VAIER<J ~ E.
Rochester Gas 1t Electric Corp'EC IP ~ iVAYE RECIl IENT AFFILIATION CRUTCHFIELD<D ~
Operating Reactors Branch 5
DOCKET 05000244 05000244 HECIP IENT IQ CODE/NAPE ORB ¹5 BC 12 COPIES LTTR ENCL 1
'0 RECIPIENT IO COf)E/NAb!E LYONSgJ ~
01 COPIES LTTR ENCL 1
1 INTERh,AL: ELD/HOS4 IE F ILE NRH/OE/FQR NR RAB RE~
12 09 07 Oo 04 1
1 2
1 1
l 1
GC 13 MRR CALVOgJ NRR/OL D IR 14 NRR/OS I/AFB RGN1 1
1 1
1 1
1 1
1 1
EXTERNAL: ACRS NRC POR iVTI8 NOTES:
15 10 10 02 1
1 3l 1
1 1
LPOR
'VSIC 03 05 1
1 1
1 TOTAL NUMBER OF COPIES REQUIRE,De LTTR 28 ENCL 27
June 10, 1982 Director of Nuclear Reactor Regulation Attention:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No.
5 U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Environmental Qualification of Electrical Equipment R. E. Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Crutchfield:
In RGSE's October 31, 1980 submittal regarding this subject, RG&E stated that. we planned to install several environmentally qualified items by June 30,
- 1982, assuming equipment procurement and availability made this possible:
RGSE has installed most of the equipment, including all transmitters, sump "B" level switches, and 29 solenoid valves.
The installation of several solenoid
- valves, as well as the RTD's, could not be completed during this outage due to design, procurement, and delivery problems.
Justification for interim continued operation was discussed in paragraphs IV.31, IV.32, and IV.39 of the October 31 report.
RG&E does intend to replace the rest of the solenoid valves at the next scheduled refueling outage, in Spring 1983.
Replacement, of the RTDs also will be initiated during that outage.
The schedule for final replacement of these items is consistent with the schedule stated in draft rule 10CFR50.49, Section (h).
In paragraph IV.30 of RGSE's October 31, 1980 environmental qualification report, it is stated that the main steam isolation valves will perform their function upon loss of power to their solenoid valves.
As presently configured, the MSIVs will fail closed upon loss of instrument air power, when some air is bled from the cylinder.
However, the MSIVs would fail as-is upon loss of electric power.
Each main steam isolation valve is controlled by two redundant sets of solenoid valves; each redundant set being powered by a separate qualified d.c.
power supply.
The operation of either set of solenoid valves will cause the MSIVs to close.
- Thus, a single failure would not cause failure of the MSIVs to isolate the main steam lines.
The lawrence solenoid valves presently installed are rated to operate at a temperature of up to 250'F, which is greater than that expected in the inter-mediate building in the event of a postulated steam line break 8206160161 820610 PDR ADOCN 05000244, PDR
June 10, 1982 Mr. Dennis M. Crutchfield "H,i. >
P O.
(~215'F).
Also, the pressure increase is very low (~0.8 psig) and would not be expected to affect the valves.
Thus, it would be expected that steam line isolation could be effected, using the solenoid valves presently in place.
However, proper docu-mentation is not available;
- thus, RG&E intends to replace these solenoid valves consistent with the schedule provided above.
Very truly yours,
~v<L (<
~
John E. Maier