ML20087P269
| ML20087P269 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/29/1984 |
| From: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 5211-84-2083, NUDOCS 8404060220 | |
| Download: ML20087P269 (4) | |
Text
O Nuclear C "? :le:
Route 441 South Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Olal Number:
March 29, 1984 5211-84-2083 Office of Nuclear Reactor Regulation Attn. J. F. Stolz, Chief Operating Reactors Branch #4 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555
Dear Mr. Stolz:
Three Mile Island Nuclear Station, Unit I (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Enviroumental Qualification of Electrical Equipment (Supp. 2)
On March 8, 1984 members of the GPUN staff met again with members of your staff to further clarify our responses of February 10, 1984 (5211-84-2038) and February 22, 1984 (5211-84-2044) and to address more Fenerally compliance with 10 CFR 50.49.
Documented clarifications discussed in that meeting will be provided to NRC by May 1, 1984. Also requested at that meeting was a specific letter addressing outstanding deficiencies in the December 10, 1982 Technical Evaluation Report on Environmental Qualification of Electrical Equipment at TMI-1 for the Emergency Feedwater System.
This information, attached, supplements the visit to the GPUN corporate office on March 20 and 21, 1984 at which time this information was reviewed.
Sincerely,
. Iukill, Director, TMI-1 ilDH:CWS:mle Attachments cc:
J. Van Vliet R. Conte 8404060220 840329 PDR ADOCK 05000289 P
PDR GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation
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O' Emergency Feedwater System -
Qualification of Electrical Equipment I
A.-
Limitorque Motor Operators TER Iteas 11 & 15 [EFV-2,1]
These motor' operators are qualified per 10CFR50.49 sections F and K.
These TER items should be placed in the NRC SER qualification category IA " Equipment Qualified".
The basic environmental qualification is provided in Limitorque reports B0058 and B0003. Report B0027 provides thermal lag data on the motor-operators.
These.Limitorques are similar.by review-of the similarity description in
.B00058 and were verified to be the same model installed at THI-l by documentation (purchase order or letter from Limitorque) or visual-inspection.
B.
Westinghouse Motors TER Item 51 [EFP-2]
These motors are qualified per 10CFR50.49 sections F and K.
This TER items should be placed in the NRC SER qualification category IA
" Equipment Qualified".
These motors are similar by review of the.TMI-l F.FP Motor Test Report and were verified:to be the same model installed at THI-l by documentation.
The basic environmental qualification is provided-in Westinghouse Reports WCAP 8754 and WCAP 7829. Supporting information includes:
1.
WCAP 8754 aging-analysis-included the silicon rubber lead wires.
2..
-Bearing analysis - are provided in GPUN calculation 110lX-5350-000 and GPUN memo R. Spragg to D. Slear dated 5/14/81.
3.
Lubrication - Exxon Terisstic 32 is controlled within the
. preventative maintenance program and is rated by Exxon at a radiation of 100 rads'with a flash point.of 410"F, (Source:
vendor specification sheet for terisstic 32).
e s
4.
Insulation life Analysis -
Westinghouse report da'ted 1/81 envelopes the thermal lag peak for the Intermediate Building temperature of 322*F.
5.
Lead Splices - are controlled within the corrective maintenance program by GPUN procedure 1420-Y-15.
We.have reviewed a recent steam and temperature. test (WCAP 7829) report which demonstrates the motors to be qualified.
We are being sent a letter from Westinghouse saying that these reports are applicable to our motors, confirming information which has been provided already by telephone conversation.
C.
Bailey E/P Converters TER Item 60 [SP-V5]'
These converters will be replaced prior to June 1984 with I/P units
[Conoflow] qualified to^IEEE 323-1974 and IEEE 344-1975. The failure mode for the I/P converter will fail open on loss of control power which varies from the E/P converter presently installed which is mid position. The'EFV-30 fail open on loss of air [LBP-81-59, 14 NRC 2111, 1362 (para. 1030) (1981)].
D.
Fisher' Limit Switch [LS/EFV-30]
Not a TER Item-These switches are used for diagnostic purposes only. Flow indication for the emergency feedwater system is provided by the qualified
-redundant flow indicators. sensed by FT-779, 782, 788 & 791. They have been installed in accordance with the requirements of Item II.E.1.2 of-NUREG 0737. A secondary indication of' emergency feedwater flow is provided by the qualified steam generator level indication system.
E.
Kerite Cable [ Common Item]
lTERItem106-These cables are qualified per.10CFR50.49 section F & K.
This TER item should be placed in the NRC SER qualification category IA " Equipment Qualified".
Plant records are traceable to Procurement Specifications, Purchase Order, Reel No., pull slip and Certificate'of Conformance (C of C) from Kerite.
L
F.
Continental Wire TER Item 107
-These cables are qualified per 10CFR 50.49 section F & K.
This TER. item should be placed in the NRC SER qualification category IA " Equipment Qualified".
Plant records are traceable to Procurement Specifications, Purchase Order,- Reel No., pull slip and Certificate of Conformance (C of C) from Contintental Wire.
G.
Foxboro Transmitter [FT 779, 782, 788 & 791]
.No TER Item The safety grade.EFW flow transmitters are fully qualified to 10CFR 50.49 Section F based on Wyle Report 45592-4, and should be placed in the NRC SER qualificaton category IA " Equipment Qualified.
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