W3P89-0071, Clarifies Misunderstanding of Normal & Emergency Use of Containment Sump Level Instrumentation.Attachment 1 Used at Conference to Show Relative Elevations of Containment & Safety Inection Sump Level Transmitters

Clarifies Misunderstanding of Normal & Emergency Use of Containment Sump Level Instrumentation.Attachment 1 Used at Conference to Show Relative Elevations of Containment & Safety Inection Sump Level Transmitters

ML20245J025
Person / Time
Site:	Waterford
Issue date:	04/28/1989
From:	Burski R LOUISIANA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
W3P89-0071, W3P89-71, NUDOCS 8905030617
Download: ML20245J025 (3)

Text

_ _ _ - _ _ _ _ _

• P. O. BOX 60340 LOUISI POWER & ANA LlGHT / 317 BARONNESTREET NEW ORLEANS, LOUISIANA 70160 .

(504) 595-3100 Su NsOSdIA April 28, 1989 W3P89-0071 A4.05 QA U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Subject:

Waterford 3 SES Docket No. 50-382 ,

License No. NPF-38 Clarification of the Use of Containment Sump Level Transmitter (SP-ILT-6705A(B)) at Waterford 3

References:

1) NRC Letter from L.J. C&1lan to J.G. Dewease dated February 6, 1989

2) LP&L Letter W3P88-1828 dated October 18, 1988

Attachment:

1) Containment / Safety Injection Sump Level Instrumentation Arrangement Gentlemen:

At the exit meeting for NRC inspection 89-05, LP&L personnel committed to clarifying an apparent misunderstanding of the normal and emergency use of the containment sump level instrumentation.

LP&L' stated at the enforcement conference held on October 4, 1988 and in the detailed writeup forwarded to the NRC staff by reference (2), that the  !

safety related function of these transmitters was not being rescinded.

Attachment I was used at the conference to show the relative elevations of the containment and the safety injection sump level transmitters. As indicated, the flood level in the containment would be in the range of the safety injection sump level instrumentation (SI-1LT-7145A(B)) by the time the containment sump level transmitters (SP-ILT-6705A(B)) become submerged.

The containment sump level instrumentation in normal plant operations is used in conjunction with a weir flow monitor as one of the Reactor Coolant System (RCS) leakage detection systems required by Technical Specification 3.4.5.1. It is also used to monitor containment sump inventory for surveillance requirement 4.4.5.2.lc. Additionally, this instrumentation 8905030617 890428

{DR ADOCK 05000382 PDC 0

"AN EQUAL OPPORTUNITY EMPLOYER" {9

Page 2 W3P89-0071 April 28, 1989 provides part of the post accident monitoring instrumentation for containment water level required in Technical Specification 3.3.3.6. Table 3.3-10(13). These instruments are also used by operations personnel in Off-Normal and Emergency operating procedures for event diagnostics and for monitoring rising containment' water level in the ear: stages of a major ,

accident. )

s The above information should clarify the normal and emergency use of the containment sump level instrumentation and provide a basis for correcting the statement in reference 1 which indicated that they are not used in these plabt conditions.

If there is any additional information that we can provide, please contact J.E. Howard at (504) 464-3202. l Very truly yours, u

R.F. Burski .

Manager l Nuclear Safety & Regulatory Affairs i RFB:RJM:ssf Attachment cc: R.D. Martin, NRC Region IV J.A. Calvo, NRC-NRR D.L. Wigginton, NRC-NRR NRC Resident Inspectors Office E.L. Blake W.M. Stevenson 1

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