ML20065T695
| ML20065T695 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 12/20/1990 |
| From: | Creel G BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-PT21-90 IEB-90-001, IEB-90-1, TAC-76537, TAC-76538, NUDOCS 9012310037 | |
| Download: ML20065T695 (2) | |
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B ALTIMORE i
OAS AND ELECTRIC CHARLES CENTER e P.O. BOX 1476 e BAL.TIMORE, MAR.YLAND 21203 1475 J
Gromot C CRttL viet Paanothe Nveta an r e,e no December 20,1990 i
U. S. Nuclear Regulator Washington, DC 20$$$y Commission ATTENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos. I & 2: Docket Nos. 50 317 & 50 318 Supp% mental Response to NRC Bulletin No. 90 01: Loss of Fill Oil in Transmitters hianufactured by Rosemount (TACs 76537 & 76538)
REFERENCES:
(a)
Letter from hir. O. C. Creel (BG&E)in No. 90 01: L to NRC Document Control Desk, dated July 17,1990, "N12r Bullet in Transmitters hianufactured by Rasemount" 1
(b)
- Letter from - Nuclevi-hianagement and Resources Council
-(NUhiARC) to NUhiARC Administrative Points of Contact, dated November 9,1990,'Rosemount Transmitter Oil Loss' Gentlemen:
L Reference (a) was our response to NRC Bulletin 90-01. In Reference (b), NUhtARC identified additional " suspect lot" transmitters. We have reviewed our records and determined that two of
- these transmitters are installed in engineered safety features actuation systems. No other suspect lot
- transmitters are in use or in stock at Calvert Cliffs Nuclear Power Plant.
Ir, Bulletin 90 01, you requested that we identify where suspect lot transmitters are installed and a schedule for replacing them (Reporting Requirement 1.c). Accordingly, this information is provided
- below:
Transmitt_ er -
Serial Number.
System Replacement Schedule 1 PT 5308 412514 Containment End of Unit 1 Cycle 10 Narrow Range Refueling Outage Pressure (Currently Spring 1992) 2 PT 5303.
412515 Containment End of Unit 2 Cycle 9 Narrow Range Refueling Outage L
Pressure (Currently Spring 1993)
(h 9012310037 901220
/) gp //'/f PDR ADOCK 05000,317 A
O FDR g
Document Control Desk December 20,1WO Page 2 Iloth the tran.smitters are normally pressurized at approximately atmospheric pressure. Also, both successfully passed the time response test summarized in Reference (a).
Should you have any further questions regarding this rnatter, we will be pleased to discuss them with you.
Very truly yours, /
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OCC/Jh10/dtm ce:
D. A.13 rune, Esquire J. E. Silberg, Esquire R. A. Capra, NRC D. G. hicDonald, Jr., NRC T. T hinrtin, NRC L E. Nicholson, NRC R.1. hictean, DNR 1
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