ML20034G429
| ML20034G429 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 03/05/1993 |
| From: | Chrzanowski D COMMONWEALTH EDISON CO. |
| To: | Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| IEB-90-001, IEB-90-1, NUDOCS 9303090502 | |
| Download: ML20034G429 (6) | |
Text
Comm:nws lth Edison E
1400 Opus Place V
Downers Grove, Illinois 60515 4
March 5,1993 Dr. Thomas E. Murley, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555 Attention:
Document Control Desk
Subject:
Response to NRC Bulletin 90-01 Supplement 1 Quad Cities Station Units 1 and 2, (NRC Dockets 50-254 and 50-265)
Reference:
NRC Bulletin 90-01 Supplement 1, " Loss of Fill Oil l
in Transmitters Manufactured by Rosemount," dated December 22,1992.
l
Dear Dr. Murley:
l The purpose of this letter is to provide the Quad Cities Station response to the requested actions of Bulletin 90-01 Supplement 1. The deialis of the Quad Cities response are contained in Attachment 1 and a tabular summary is provided in Attachment 2.
l Quad Cities has a total of eighteen (18) transmitters within the scope of the referenced Bulletin; however, no enhanced monitoring more frequently than a refueling cycle will be required. This determination is based on transmitter maturity, operating pressure and Bulletin categorization.
Consistent with the Bulletin's reporting requirements, Quad Cities Station has reviewed the requested actions and agrees to comply with all applicable actions.
i Specifically, Quad Cities will:
replace the one (1) category 1.c transmitter during the current O2R12 refuel outage (Spring '93); and maintain an enhanced surveillance program, at a refueling outage frequency, for the four (4) transmitters in Bulletin category 1.d until these transmitters are replaced or reach maturity.
l 090010 9303090502 930305 4
PDR ADDCK 050o gg f M' fj ZNLD/2525/1 u
j Dr. Muriey March 5,1993 l
l l
These actions satisfy completely the recommendations of the Supplement and no l
additional actions or justifications are required. Prior to the end of the Unit 2 outage, CECO will provide a written confirmation that the one (1), non-mature, RPS/ESF Rosemount transmitter has been replaced.
To the best of my knowledge and belief, the statements contained in this document are true and correct. In some respects these statements are not based on my personal knowledge, but on information furnished by other CECO employees, contractor employees, and/or consultants. Such information has been reviewed in accordance with company practice, and I believe it to be reliable.
If there are any questions or cornments, please contact me.
l l
j Sincerely, Q-
~ww David J.
hrzanowski Generic issues Administrator Nuclear Regulatory Services Attachments: - Response to NRCB 90-01 S1 Actions - Tabular Summary of Transmitter Status cc:
Regional Administrator-Rill C. Patel, Quad Cities Project Manager-NRR/PDill-2 T. Taylor, Senior Residen+ Inspector (Quad Cities) emu Nf.coeue bWnl tM#pnMff doe lA145 ym
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NU7 W 'LL u Crc 7.NLD/2525/2
Quad Cities Response to NRCB 90-01 S1 Requested Actions Bequestedhs 1.
Review Plant records and identify any Rosemount Model 1153 Series B, Model 1153 Series D, and model 1154 transmitters manufactured before July 11,1989, that are use or may be used in the future in either safety-related systems or systems installed in accordance with 10 CFR 50.62 (the ATWS rule).
Quad Cities has completed this review and has determined that a total of eighteen (18) affected I;osemount Transmitters are installed in the described systems.
a.
Expeditiously replace, or monitor for the life of the transmitter on a monthly basis using an enhanced surveillance monitoring program, any transmitters that have a normal nr a*ating pressure greater than 1500 psi and that are installed in reactor protection mp systems, ESF actuation systems or ATWS systems.
Action for those transmitters that have not met the Rosemount psi-month threshold criterion should be expedited.
Quad Cities does not have any transmitters in this category.
At their discretic iicensees may monitor using an enhanced surveillance program at least once every refueling cycle, but not exceeding 24 months, transmitters in this category if the appropriate psi-month threshold criterion recommended by Rcsemount has been reached, and the monitoring interval is justified based upon transmitter performance in service and its specific safety function.
Quad Cities does not have any transmitters in this calogory.
b.
Replace, or monitor for the life of the transmitter on a quarterly basis using an enhanced surveillance monitoring program, any transmitters that have a normal operating pressure greater than 1500 psi and that are used in safety-related applications but are not installed in reactor protection trip systems, ESF actuation systems, or ATWS systems.
Quad Cities does not have any transmitters in this category.
At their discretion, licenseos may monitor using an enhanced surveillance program at least once every refueling cycle, but not exceeding 24 months, transmitters in inis category if the appropdate psi-month threshold criterion recommended by Rosemount has been reached, and the monitoring interval is justified based upon transmitter performance in service and its specific function.
Quad Cities does not have any transmitters in this caingory.
ZNLD/2525/3 j
Ouad Cities Response to NRCB 90-01 S1 Requested Acbons l
c.
[For BWRs) Replace, or monitor on a monthly basis using an enhanced surveillance monitoring program, until the transmitter reaches the appropriate psi-month threshold critenon recommended by Rosemount, any transmitters that have a i
normal operating pressure greater than 500 psi and less than or equal to 1500 psi, that are installed in reactor protection trip systems, ESF actuation systems or ATWS systems.
Quad Cihes has one (1) transmitter in this calogcay; however since it does not initate reactor protection or ATWS trips it is considered in the following subcaingcny.
On a case-by-case basis except for transmitters that initiate reactor protection or ATWS trips for high pressure or low water level, licensees may monitor using an 4
enhanced surveillance program at least once every refueling cycle, but not exceeding 24 months, if sufficient justification is provided based upon transmitter i
performance in service and its specific safety function.
Ouad Cities has one (1) transmitter mentioned above, in this category; however, this transmitter will be replaced when Unit 2 enters its refueling outage on March 6, 1993. Therefore no enhanced monitoring is required. Also, Quad Cities has six (6)
J mature transmitters in this category. The Quad Cities program will maintain confidence that failures can be detected.
c.
[For PWRs] Replace, or monitor at least once every refueling cycle, but not exceedirig 24 months, using an enhanced surveillance program until the transmitter reaches the appropriate psi-month threshold criterion recommended by Rosemount, any transmitters that have a normal operating pressure greater than 500 psi and less than or equal to 1500 psi and that are installed in reactor protection trip systems, ESF actuation systems, or ATWS systems.
The PWR requirements are not applicable to Quad Cities Station.
d.
Replace, or monitor at least once every refueling cycle, but not exceeding 24 j
months, using an enhanced surveillance monitoring program until the transmitter reaches the appropriate psi-month threshold criterion recommended by Rosemount, any transmitters used in safety-related systems that have a normal operating pressure greater than 500 psi and less than or equal to 1500 psi, and that are not installed in reactor protection trip systems, ESF actuation systems, or ATWS systems.
Quad Cities has four (4) transmitters in this category. These transmitters will be monitored until replacement.
ZNLD/2525/4
Quad Cities Response to NRCB 90-01 S1 Requested Achons e.
At licensee discretion, exclude from the enhanced surveillance program any transmitters that have a normal operating pressure greater than 500 psi and less than or equal to 1500 psi that have reached the appropriate psi-month threshold criterion recommended by Rosemount (60,000 psi-months or 130,000 psi-months depending on the range code of the transmitter).
A high degree of confidence shouM be maintained for detecting failure of these transmitters caused by a loss of fill-oil and a high degree of reliability should be maintained for the function consistent with its safety significance.
Quad Cities dos,s not have any transmitters in this category.
i r
f.
At licensee discretion, exclude from the enhanced surveillance program any transmitters that have a normal operating pressure less than or equal to 500 psi. A high degree of confidence should be maintained for detecting failure of these transmitters caused by a loss of fill-oil and a high degree of reliability should be maintained for the function consistent with its safety significance.
Quad Cities has seven (7) transmitters in this category. The Quad Cities program will maintain confidence that failures can be detected.
2.
Evaluate the enhanced surveillance monitoring program to ensure that the program provides measurement data with an accuracy range consistent with that needed for comparison with manufacturer drift data criteria for determining degradation caused by a loss of fill-oil.
Quad Cities has an enhanced surveillance program that monstors, with required accuracy, the parameters indicative of a loss of fill oil condition.
l 1
I l
l ZNLD/2525/5
Summary of Transmitter Status for Quad Cities Frequency of Discussion /Consnents Bulletin Transmitter Category Pressure / Function Maturity Enhanced Surveillance Quad Cities does not have any transmitters in 1.a Not Mature, Normal Operating Pressure
< 60,000 N/A this category
>1500 psi and transmitter ps i* months is installed in RPS,ESF or Quad Cities does not have any transmitters in ATWS systems
- Mature,
> 60,000 N/A this category ps t
- months Quad Cities does not have any transmitters in 1.b Not Mature, kornel Operating Pressure
< 60,000 N/A this category
>1500 psi. Transmitter is psi
- months saf ety related but is not Quad Cities does not have any transmitters in installed in RPS, ESF or
- Mature, ATWS systems
> 60,000 N/A this category psi
- months 1.c Operating pressure from Not Mature, N/A Quad Cities does not have any transmitters in (BWR) 500 to 1500 psi and
< 60,000 this category transmitter is in RPS, ESF psi
- months Quad Cities has"1 transmitter in this Refueling or ATWS systems Outage category'
- Mature, Discretionary Dued Cities has 6' transmitters in this
> 60,000 category psi
- months 1.c Operating pressure from Not Mature, Not applicable to Quad (PWR) 500 to 1500 psi and
< 60,000 N/A transmitter is in RPS, ESF psi
- months or ATWS systems Not applicable to Quad
- Mature,
> 60,000 N/A psi
- months 1.d Operating pressure from Not Mature, Refueling Quad Cities has 4 transmitters in this 500 to 1500 psi and
< 60,000 Dutage' category trantmittec is no_t,in RPS, psi
- months ESF or ATWS systems but is safety related Quad Cities does not have any transmitters in 1.e Operating pressure from
- Mature, 500 to 1500 psi
> 60,000 N/A this category psi
- months 1.f Operating pressure less N/A Exenpt Quad Cities has 7 transmitters in this than or equal to 500 psi category Quad Cities has an enhanced surveillance monitoring program that provides measurement data with an accuracy 2
range consistent for determining degradation caused by loss of fill oil.
t l
l, i