ML20209H350
| ML20209H350 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 09/10/1986 |
| From: | Allen C COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 2086K, IEB-86-002, IEB-86-2, NUDOCS 8609150232 | |
| Download: ML20209H350 (35) | |
Text
N c un wm me n
- " :)3 One First Nabonal Plaza, Chca00, lilinois Address Reply to: Post Omco Box 767
\ Checago, Illinois 60890 0767 September 10, 1986 Mr. Harold R. Denton, Director ,
Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
LaSalle County Station Units 1 and 2 Information Regarding "SOR" Differential Pressure Switches NRC Docket Nos. 50-373 and 50-374 Reference (a): Letter dated September 8, 1986, from C. M. Allen to H. R. Denton regarding LaSalle Unit 1 SOR 1 Switches.
Dear Mr. Denton:
In a telecon with your staff on September 9, 1986, commonwealth Edison (CECO) was asked to amplify information provided in Reference (a) concerning the SOR differential pressure switches installed at LaSalle
. County Station to allow the staff to complete a safety analysis review of
{ for Unit 1 startup. A portion of the information requested in that telecon, itemized below, is provided in the attachments to this letter.
- Explanation of changes made to Unit I and Unit 2 IEB 86-02 response in the August 9, 1986 submittal and justification for each.
, Changes made to the Executive Summary are also discussed.
!. . Unit 2 calibration data collected up to 9/09/86 regarding Model 102 and 103 SOR differential pressure switches.
2- - Identification of the categorization of the switches found unacceptable for use in LaSalle Unit 1.
i If you or your staff have any additional questions regarding this matter, please address them to this office.
1 Very truly yours,
.b. - - " '
. M. Allen Nuclear Licensing Administrator im Attachment
\
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2086K 8609150232 860910 (I
ATTACHMENT A REVISION TO THE RESPONSE TO IE BULLETIN 86-02 LASALLE COUNTY STATION - UNITS 1 AND 2 This response amends the response submitted on August 29, 1986, in the following manner:
Section 1 The discussion was revised to more accurately reflect the time frame of installation of SOR dp switches on Unit 1. It was also revised to state that the list in Table 1 reflects the complete list of both safety and non-safety applications of series 102 and 103 SOR dp switches for both units.
Section 3 The description of 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> time-pressure " soak" testing of SOR switches for Unit I was revised to delete the words "as stated above", since a discussion of time pressure soak testing had not been presented before that paragraph.
Also, an underscore was removed from the words "much more" two paragraphs later.
Section 5 The description of how the initial setpoints were chosen for Unit 1 switches was revised to state that "with the exception of the Main Steam Line High Flow Switch" settings, the values were the same as on Unit 2.
For the Main Steam Line High Flow switch settings, the methodology used to obtain the setpoint was the same as the methodology used on Unit 2, however, the value determined using this methodology reflects a less limiting setting since the testing on Unit I revealed an overall better performance of the switches.
Section 6 The discussion was revised to reflect commitments made in discussions with the NRR staff on September 5, 1986. In brief there are:
- a. A 950 psig level drop test will be conducted for Unit 1 at shutdown for the second refueling outage, and, plant conditions permitting, during the first planned shutdown of the unit following at least 3 months of operation.
- b. The surveillance frequency for the Unit 1 Reactor Water Level 3 application of switches was augmented to match the program of surveillance planned to be conducted on Unit 2.
- i 3
References i
Reference 6 was revised to reference the most current letter transmitting the Unit 1 Executive Summary.
Table 2 - Unit 2 This table, which was used as input to our submittal upon which the Unit 2 SER was prepared, was updated as follows:
- 1. The repeatability value for the ECCS Minimum Flow Valve applications was updated to accurately reflect the worst-case measured value found in the SOR Setpoint Characterization program and used in determining the repeatability margins given in Table 3 - Unit 2, for the ECCS minimum flow applications. This value was 1.15" W.C., which represents approximately 4% of the 30" W.C. adjustable ranga of the switch, not 2%
as previously reported. The 1.15" W.C. worst-case value was used in determining the margins of 73 GPM, 71 GPM, and 50 GPM for repeatability of the RHR-LPCI, LPCS, and HPCS minimum flow valve control differential pressure switches, respectively, reported in our previous submittals, and upon which the Unit 2 SER was (correctly) based.
- 2. The worst-case measured static offset value reported for the ECCS minimum flow applications was revised to correctly reflect the value of i 3.1" W.C. measured in the SOR Setpoint Characterization program. The 3.1" value was used in the calculations of margin for static shift provided in the Table of margins in our previous submittals. The 3.1"
!' W.C. value resulted in the calculation of 237 GPM, 233 GPM, and 151 GPM margins for RHR-LPCI, LPCS, and HPCS minimum flow valve applications, l
respectively, reported in our previous submittals and upon which the Unit 2 SER was (correctly) based.
4 Table 2 -- Unit 1 i
I This table was revised as follows:
! 1. The " note (2)" on our previous submittal (describing that the data shown i for Main Steam Line High Flow was based on data from 8 out of the 16 switches) was deleted. After completion of all the testing on Unit 1, the data shown in the table was actually representative of measured values for all 16 switches.
i
- 2. Note (3) was renumbered as Note (2). The reference to note 3 at the end of the " Repeatability Results" column for ECCS Minimum Flow Switches was removed. The setpoint at which to operate the minimum flow control
- valves was chosen to be so conservative with respect to the minimum flow l requirements of the ECCG pumps that the repeatability values measured J
for the worst-performing switches in the group could easily be
! accommodated. In addition to the margins for worst-case static shift,
- repeatability, and technical specification drift allowed for these switches, there is also additional margin as shown on notes 1, 2, and 3 i in Table 3 -- Unit 1.
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Table 3 - Unit 2 This table, which was used as input to our submittal upon which the Unit 2 i SER was prepared, was updated as follows:
- 1. The "New Setpoint" value for RHR-LPCI minimum flow application was a updated to correct a math error. The old values of 1977 GPM for l
"setpoint",-1427 GPM for " total margin", and 660 GPM for " additional l
margin" were corrected to 1973 GPM, 1423 GPM, and 663 GPM, respectively.
4
- 2. Note (4) was revised to reflect the fact that the repeatability values of the worst-case performing ECCS minimum flow valve control switches, as determined in the SOR Setpoint Characterization Testing Program were l used in determining the values in the table, rather than the + 2% of adjustable range of the switch. Enough margin was made available in the
- selection of the very conservative new setpoint of the switch to i
accommodate all the switches in service, rather than having to
- j. hand-select switches with repeatability values less than a certain value.
y 3. The reference to note (1) was added to the " Total Margin" shown for l RHR-LPCI minimum flow valve control application, where it had been omitted on our previous submittal.
Table 3 -- Unit 1 4
This table was revised as follows:
I
- 1. The values in the " Static Shift", " Repeatability", " Total" and
" Additional" margins for the BCCS minimum flow application were revised i to reflect the worst-case measured values for static shift and repeatability for switches about to go into service on Unit 1. As is
. shown in the table (Notes (1),(2), and (3)) there still exists i additional margin above the LCO for each minimum flow application to
- provide for safe operation even when the switch is at the worst-case condition. Also, the operability tests conducted for these systems with l
the existing SOR switches installed showed that there is more than j adequate flow available to safely operate the BCCS pumps. ,
! 2. Note (4) was revised to reflect the fact that for the BCCS minimum flow l' application, the worst-case measured repeatability values for switches in service, as determined in the SOR Setpoint Characterization Testing Program, were used for the repeatability values in the " Repeatability" i
column of the Table.
- 3. In Note (6) it was noted that the Unit 2 values for Main Steam Line High 4
Flow switches were not used on Unit 1. Instead, the worst-case measured values for the Unit 1 SOR Setpoint Characterization Testing Program were used. The values in the table reflect the fact that the worst-case Unit 1 switches performed better than the worst-case Unit 2 switches, and j this result was taken advantage of in the determination of the Unit 1 1
I 1
Main Steam Line High Flow Setpoint. In addition, the worst-case performance of only a few switches determined the values shown in the table. It is planned in the future to improve the values shown here by selectively replacing the worst performing switches with better performing ones.
Table 4 -- Unit 2 This table which was used as input to our submittal upon which the Unit 2 ,
SER was prepared, was updated as follows:
- 1. Items 4.c.(1)(a) and 4.c.(1)(b) were revised to reflect that the Action Limits for the BCCS minimum flow valve control switches were based upon repeatability values representative of the worst-case performing :
switches as measured from the SOR Sotpoint Characterizati,on Program -
Conducted on Unit 2. (See previous discussions on Tables 2 end 3 for ,
Unit 2).
i
- 2. Similarly, Item 4.c.(2)b was also revised. ;
- 3. Item 6:
i The words "a. Categories" were deleted. (There was no item b). Also, ,
1 the numbers 1, 2, and 3 were changed to a, b, and c, respectively. ;
Item 6.d was added. Af ter discussion with the NRR Staff on September 5, it was agreed that switches that exceed the reject limit would be disassembled and inspected. (In particular, examination would be conducted to determine if water or foreign deposits were found internal .
to the switch.)
- 4. Item 7:
A description of the alternatives being considered at this time for ultimate replacement of SOR switches in level sensing applications was ,
presented, per request of the NRR staff on September 5, 1986.
Table 4 -- Unit 1 -
This table was revised as follows:
~
- 1. In Item 1, reference was made to the current version of the Executive Summary.
{
- 2. In Item 3, a commitment was made to perform a 950 psig level drop test at shutdown of Unit 1 for the second refueling outage, and plant conditions permitting, at the first planned shutdown following at least !
three months of operation after restart the Unit. These concitments were added after discussion with the NRR Staff on September S, 1986.
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In addition, a description of the successful level drop test conducted on Unit 2 (showing that the setpoints may be appropriately changed per the methodology'of the SOR Setpoint Characterization Program) was added to match the submittal in the Executive Summary.
- 3. In Items 4.c(1)(a), 4.c.(1)(b), and 4.c.(2)(b), the responses were revised to reflect the fact that the action and reject limits for the Unit 1 BCCS minimum flow valve control applications were based on repeatability values measured for the worst-case performing switches installed in Unit 1. As described above in the discussions of the revision to Tables 2 and 3, the initial setpoint chosen for these applications allowed for a wide variability in switch performance, while still maintaining an additional margin over and above the worst performing switch measured values.
- 4. In Item 6, a commitment was made to follow the same augmented surveillance schedule on the Unit 1 Reactor Water Level 3 switches as was developed for Unit 2. This commitment was made after discussion with the NRR staff on September 5, 1986.
- 5. Also, Item 6.d was added. This item provides a list of alternatives currently being considered for ultimately replacing the level sensing SOR switches on Unit 1.
l 2086K 1
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ATTACISBNT B EXECUTIVE SUIGIARY LASALLE UNIT 1 SETPOINT CHARACTERIZATION PROGRAM Revisions, September 5, 1986 This submittal of the Executive Summary for the LaSalle County Unit 1 Setpoint Characterization Program contains the following revisions to our August 29, 1986 submittal:
B. Background This section was updated to accurately reflect the actual time frame for installation of SOR Switches into Unit 1.
C. Special Tests and setpoint Revisions This section was revised to clarify that the setpoints chosen for the Unit 1 application of Main Steam Line High Flow Switches were not the Unit 2 setpoints, but rather they were based on the worst case values for repeatability and static shift measured for the Unit 1 switches. In general, these values reflected an overall better performance of the Unit I switches than was experienced in the Unit 2 program, allowing for a less restrictive setpoint.
E. References The date in Reference 5 was revised to reflect the current revision of that document.
Table 2 This table was revised as follows: ,
The reference to note (2) in the " Repeatability Results" column for the ECCS Minimum Flow Switches was deleted. There was more than adequate margin available in the setpoint chosen for actuation of these switches to accommodate the worst-case repeatability values measured for switches about to go into service on Unit 1. These worst-case measured values were greater than the 2% of adjustable range value described in the note.
i Table 3 This table was revised as follows:
- 1) The values in the " Static Shift", " Repeatability", " Total" and
" Additional" Margins for the BCCS Minimum Flow application were revised to reflect the worst-case measured values for static shift and repeatability for switches about to go into service on Unit 1.
As is shown in the table (notes (1) (2), and (3)) there still exists additional margin above the LCO for each minimum flow application to provide for safe operation even when the switch is at the worst-case condition. Also, the operability tests conducted for these systems with the existing SOR switches installed showed that there is more than adequate flow available to safely operate the ECCS pumps.
- 2) Note (4) was revised to reflect the fact that for the ECCS minimum flow application, the worst-case measured repeatability values for switches in service, as determined in the SOR Setpoint Characterization Testing Program, were used for the repeatability values in the " Repeatability" column of the Table.
- 3) In Note (6) it was noted that the Unit 2 values for Main Steam Line High Flow switches were not used on Unit 1. Instead, the worst-case measured values for the Unit 1 SOR Setpoint Characterization Testing Program were used. The values in the table reflect the fact that the worst-case Unit 1 switches performed better than the worst-case Unit 2 switches, and this result was taken advantage of in the determination of the Unit 1 Main Steam Line High Flow Setpoint. In addition, the worst-case performance of only a few switches determined the values shown in the table. It is planned in the future to improve the values shown here by selectively replacing the worst performing switches with better performing ones.
Table 4 This table was revised as follows:
- 1) In Item 1, reference was made to the current version of the Executive Summary.
- 2) In Item 3, a commitment was made to perform a 950 psig level drop test at shutdown of Unit i for the second refueling outage, and, plant conditions permitting, at the first planned shutdown following at least three months of operation after restart of the unit. 'ihese commitments were added af ter discussion with the NRR Staff on September 5, 1986.
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- 3) In Items 4.c.(1.)(a),,4.c.(1.)(b), and 4.c.(2)(b), the~ responses were revised to reflect the fact that the action and reject limits for the Unit 1 BCCS minimum flow valve control applications were based on repeatability values measured for the worst-case performing switches installed in Unit 1. As described above in the discussions of the revisions to Tables 2 and 3, the initial setpoint chosen for these applications allowed for a wide variability in switch performance, while still maintaining an additional margin over and above the worst performing switch measured values.
- 4) In Item 6, a commitment was made to follow the same augmented surveillance schedule on the Unit 1 Reactor Water Level 3 switches as was developed for Unit 2. This commitment was made after discussion with the NRR staff on September 5, 1986.
- 5) Also, Item 6.d was added. This item provides a list of alternatives currently being considered for ultimately replacing the level sensing SOR switches on Unit 1.
2086K
r-ATTA00ENT C CALIBRATION DATA FROM LASALLE UNIT 2 SOR DIFFERENTIAL PRESSURE SWITCHES 2086k
UNIT 2 CALIBRATION DATA
. =======================
EQUIPMENT PIECE NUMBER: 2B21-NO24A APPLICATION: LEVEL 3 GCRAM AND ISOLATION NOMINAL SETPOINT: 58.90" WC CALIBRATION TOLERANCE: 58.40-59.40" WC ACTION LIMITS: 56.10-61.70" WC REJECTION LIMITS: 56.00-61.80" WC TECH SPEC ALLOWABLE: 64.84" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 07/30/86 58.90 53.60 OD/18/86 58.30 52.40 59.10 54.40 09/01/86 59.30 54.00 58.80 53.60 l
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s UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO24B APPLICATION: LEVEL 3 SCRAM AND ISOLATION NOrlINAL SETPOINT: 58.90" WC l CALIBRATION TOLERANCE: 58.40-59.40" WC ACTION LIMITS: 56.10-61.70" WC REJECTION LIMITS: 56.00-61.80" WC TECH SPEC ALLOWABLE: 64.84" WC
" "As Left" Calibration Date "
As Found" "As Found" As Left" Trip Reset Trip Reset 07/30/86 58.90 54.00 08/18/86 59.15 54.05 59.00 54.40 09/01/86 58.90 53.80 58.90 54.10 d
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,en,--n,---.-r,, -,,,.-.~.--..--,--c. ,-.,_.,,,-.n.-- - ,,,,--~-,,,, ,,,-,-v
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO24C APPLICATION: LEVEL 3 SCRAM AND ISOLATION NOMINAL SETPOINT: 58.90" WC CALIBRATION TOLERANCE: 58.40-59.40" WC ACTION LIMITS: 56.10-61.70" WC REJECTION LIMITS: 56.00-61.80" WC TECH SPEC ALLOWABLE: 64.84" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset
___-----__-_-=-==-----------------------------__=
07/30/86 58.90 53.30 08/18/86 58.85 52.70 58.80 53.10 09/01/86 58.50 52.60 58.50 52.70 l
i
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO24D APPLICATION: LEVEL 3 SCRAM AND ISOLATION NOMINAL SETPOINT: 58.90" WC CALIBRATION TOLERANCE: 58.40-59.40" WC ACTION LIMITS: 56.10-61.70" WC REJECTION LIMITS: 56.00-61.80" WC TECH SPEC ALLOWADLE: 64.84" WC _
Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 07/30/86 59.00 53.80 08/18/86 58.90 54.00 59.00 54.00 g
09/01/86 58.75 53.50 58.70 53.70
UNIT 2 CALIBRATION DATA
======================= ,
EQUIPMENT PIECE NUMBER: 2B21-NO31A APPLICATION: REACTOR LEVEL 2 HPCS INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.0-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset l 08/01/86 134.25 127.75 08/27/86 137.80 130.80 134.20 127.30 l
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO31B APPLICATION: REACTOR LEVEL 2 HPCS INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.0-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC
" "As Left" Calibration Date "As Found" "As Found" As Left" Trip Reset Trip Reset
= - - = = - - = _ _=_==-------------------------------
08/02/86 134.00 125.50 08/27/86 134.50 128.00 134.50 128.00 f
, - _ _ _ , , - - . - - , ,, , , --_ -- ---. _ . ,- _-,--._n, ,m , , ,, - y
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO31C APPLICATION: REACTOR LEVEL 2 HPCS INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.0-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.G" WC Calibration Date "As Found" "As Found" " As Le f t " "As Left" Trip Reset Trip Reset
- - - - - _ _ = -
, _ __________- - =-___________________________
08/02/86 134.00 125.50 i
08/27/86 135.50 126.50 134.30 126.00 i
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1
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO31D APPLICATION: REACTOR LEVEL 2 HPCS INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.O-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/02/86 134.20 127.00 08/27/86 134.60 127.20 134.70 127.50
UNIT 2 CALIBRATION DATA
===========
1 EQUIPMENT PIECE NUMBER: 2B21-NO38A APPLICATION: LEVEL 3 LOW WATER LEVEL ADS CONFIRMED NOMINAL SETPOINT: 58.90" WC CALIBRATION TOLERANCE: 58.40-59.40" WC ACTION LIMITS: 56.10-61.70" WC REJECTION LIMITS: 56.00-61.80" WC TECH SPEC ALLOWABLE: 64.84" WC Celibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 07/30/86 58.90 53.70 08/19/86 59.55 54.10 58.80 53.65 09/02/86 59.05 54.00 59.00 54.15 I
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UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO38B APPLICATION: LEVEL 3 LOW WATER LEVEL ADS CONFIRMED NOMINAL SETPOINT: 58.90" WC CALIBRATION TOLERANCE: 58.40-59.40" WC ACTION LIMITS: 56.10-61.70" WC REJECTION LIMITS: 56.00-61.80" WC TECH SPEC ALLOWABLE: 64.84" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 07/30/86 58.90 53.50 08/19/86 59.20 93.35 59.15 54.10 09/02/86 59.40 d4.05 58.80 53.70 1
i I
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37AA APPLICATION: REACTOR LEVEL 1 ECCS INITIATION NOMINAL SETPOINT: 189.0" WC CALIBRATION TOLERANCE: 187.O-189.0" WC RCTION LIMITS: 181.2-196.8" WC PEJECTION LIMITS: 178.8-199.2" WC TECH SPEC ALLOWABLE: 207.1" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset
- - - - - - - - - = = - -
.---------, -=_ ==------
08/02/86 189.20 179.50 08/13/86 189.75 179.75 189.75 179.75 i
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l UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37AB APPLICATION: REACTOR LEVEL 2 RCIC INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.0-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/02/86 134.20 126.80 08/13/86 134.75 127.50 133.75 126.40
UNIT 2 CALIBRATION DATA
========.==
EQUIPMENT PIECE NUMBER: 2B21-NO37BA APPLICATION: REACTOR LEVEL 1 ECCS INITIATION NOMINAL SETPOINT: 189.0" WC CALIBRATION TOLERANCE: 187.O-189.0" WC ACTION LIMITS: 181.2-196.8" WC REJECTION LIMITS: 178.8-199.2" WC TECH SPEC ALLOWABLE: 207.1" WC Colibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/03/86 189.90 169.60 08/13/86 190.00 170.40 190.00 170.40
4 UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37BB APPLICATION: REACTOR LEVEL 2 RCIC INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.O-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC i
Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/03/86 134.10 128.30 08/13/86 135.50 129.50 134.50 128.60
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37CA APPLICATION: REACTOR LEVEL 1 ECCS INITIATION NOMINAL SETPOINT: 189.O" WC CALIBRATION TOLERANCE: 187.O-189.0" WC ACTION LIMITS: 181.2-196.8" WC REJECTION LIMITS: 178.8-199.2" WC TECH SPEC ALLOWABLE: 207.1" WC Calibtation Date "
As Found" "
As Found" "As Left" "As Left" Trip Reset Trip Reset
=--___________--
08/02/86 188.50 176.00 08/13/86 189.50 177.50 189.50 177.50 l
1 9 T
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.m y ---- -- - --m- - - - - , - - - - , - - - - - - - - - - - - - - - - - - - - - - -
UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37CB APPLICATION: REACTOR LEVEL 2 RCIC INITIATION NOMINAL SETPOINT: 134.O" WC CALIBRATION TOLERANCE: 133.O-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset
____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . =_ _____---.---- _.
08/O2/86 133.80 128.70 08/13/86 135.00 131.00 134.50 129.75 g
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J UNIT 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37DA APPLICATION: REACTOR LEVEL 1 ECCS INITIATION NOMINAL SETPOINT: 189.0" WC CALIBRATION TOLERANCE: 187.O-189.0" WC ACTION LIMITS: 181.2-196.8" WC REJECTION LIMITS: 178.8-199.2" WC TECH SPEC ALLOWABLE: 207.1" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset
--=_ - _ --------------------------------
- - - - _ = --------------
- 08/03/86 188.40 175.80 08/13/86 189.60 177.00 189.60 177.00 f
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UNI T 2 CALIBRATION DATA
===========
EQUIPMENT PIECE NUMBER: 2B21-NO37DB APPLICATION: REACTOR LEVEL 2 RCIC INITIATION NOMINAL SETPOINT: 134.0" WC CALIBRATION TOLERANCE: 133.O-135.0" WC ACTION LIMITS: 128.6-139.4" WC REJECTION LIMITS: 125.4-142.6" WC TECH SPEC ALLOWABLE: 150.6" WC Calibration Date "
As Found" "
As Found" "
As Left" As Left"
] Trip Reset Trip Reset
_ - - - - = - - ------- -_ --_ - ---------------
__ =--==- _ _
08/03/86 133.90 126.80 08/13/86 135.75 129.00 134.00 127.75 i
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UNIT 2 CALIBRATION DATA
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EQUIPMENT PIECE NUMBER: 2E22-NOO6 APPLICATION: HPCS MINIMUM FLOW NOMINAL SETPOINT: 23.00" WC CALIBRATION TOLERANCE: 22.40-23.60" WC ACTION LIMITS: 21.30-24.70" WC REJECTION LIMITS: 20.00-26.00" WC TECH SPEC ALLOWABLE: 9.70" WC Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset
- 07/30/86 23.20 32.40 08/15/86 23.60 32.40 23.60 31.60 i
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UNIT 2 CALIBRATION DATA i =======================
EQUIPMENT PIECE NUMBER: 2E31-N008A APPLICATION: MSL HI FLOW ISOLATION NOMINAL SETPOINT: 85.0 PSID CALIBRATION TOLERANCE: 84.0-86.0 PSID ACTION LIMITS: 69.50-100.50 PSID REJECTION LIMITS: 69.50-100.50 PSID TECH SPEC ALLOWABLE: 111.0 PSID Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/02/86 85.50 62.50 08/29/86 85.70 61.80 85.30 61.80 i
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UNIT 2 CALIBRATION DATA
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EQUIPMENT PIECE NUMBER: 2E31-NOO8B APPLICATION: MSL HI FLOW ISOLATION NOMINAL SETPOINT: 85.0 PSID CALIBRATION TOLERANCE: 84.0-86.0 PSID ACTION LIMITS: 69.50-100.50 PSID REJECTION LIMITS: 69.50-100.50 PSID TECH SPEC ALLOWABLE: 111.0 PSID Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/02/86 85.20 65.40 08/29/86 87.00 65.50 85.00 65.40 5
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UNIT 2 CALIBRATION DATA
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EQUIPMENT PIECE NUMBER: 2E.31-NOO8C APPLICATION: MSL HI FLOW ISOLATION NOMINAL SETPOINT: 85.0 PSID CALIBRATION TOLERANCE: 84.0-86.0 PSID ACTION LIMITS: 69.50-100.50 PSID REJECTION LIMITS: 69.50-100.50 PSID TECH SPEC ALLOWADLE: 111.0 PSID Calibration Date "As Found" "As Found" "As Left" "As Left" Trip Reset Trip Reset 08/02/86 85.00 65.60 09/29/86 86.00 64.00 85.50 64.00 l
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s UNIT 2 CALIBRATION DATA j
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EQUIPMENT PIECE NUMBER: 2E31-NOO8D ,
APPLICATION: MSL HI FLOW ISOLATION NOMINAL SETPOINT: 85.0 PSID CALIBRATION TOLERANCE: 84.0-86.0 PSID ACTION LIMITS: 69.50-100.50 PSID REJECTION LIMITS: 69.50-100.50 PSID TECH SPEC ALLOWABLE: 111.0 PSID Calibration Date "
As Found" As Found" "As Left" As Left" Trip Reset Trip Reset ;
- - - - - - - - - - _ - _ ---- - - - - - - - _ _ _ -------- ===- - - - - - _- -. =---------
08/03/86 84.40 67.00 08/29/86 84.20 68.00 85.30 69.50
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ATTAOGIENT D IDENTIFICATION OF SWITCHES FtX1ND UNACCEPTABLE FOR USE AT LASALLE BY CATEGORY l
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- During the telecon of August 9, 1986 CECO agreed to classify I switches switches that were determined to be not acceptable for use at LaSalle Station. Depending on the category in which each switch was classified, CECO committed to certain actions. These categories are as follows:
i (a) Switches not installed for which testing revealed excessive static
! shift or repeatability spread and which will be returned to SOR for i credit.
(b) Switches which have been installed but not subjected to operating pressure.
(c) Switches which have been installed and subjected to operating pressure.
( P.ased on these categories, the switches found unacceptable are classified as follows:
l Category a)
Space 1 86-6-2508 Spar e 2 86-6-2513 Category b) 1 B21-N024B 85-1-2369 1 B21-N024D 85-1-2373 1 B31-N007hA 85-4-260 1 B31-N013BB 85-1-2427 Category c) 1 B21-N038A 85-1-2375 1 E31-N012BB 85-1-2435 2086K
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! Static O Ring Switches Rejected As a Result of The Unit i SOR Setpoint Characterization Program
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Equipment Serial Switch Measured Offset Measured Repeat Release Piece Number Model Offset Limit Repeat Limit Possible Number Number "
W. C. " WC " W.C. " WC 1D21-NO24B 85-1-2369 B212 3.80" 3.0" O.59" 1.86" Yes 1821-NO24D 85-1-2373 B212 4.45" 3. 0" 1.43" 1.86" Yes 1B21-NO38A 85-1-2375 B212 5.44" 3. 0" O.67" 1.86" Yes 1E31-NOO7AA 85-4-260 B203 -6.91" 8. 0" 4.91" 3.60" Yes 1E31-NO13BB 85-1-2427 B203 2.03" 8. 0" 5.96" 3.60" Yes 1E31-NO12BB 85-1-2435 B203 1.97" 8. 0 " 2.09" 3.60" Yes Spare 1 86-6-2508 B212 3.24" 3. 0 " O.70" 1.86" Yes Spare 2 86-6-2513 B212 0.80" 3.0" 3.79" 1.86" Yes Notes: Switches NO38A and NO12BB were installed March 1985 thus have been exposed to vessel pressure conditions.
Switches NO24B, NO24D, NOO7AA, and NO13BB were installed during Unit 1 ist Refuel Outage thus have been valved in service i
but not exposed to vessel pressure conditions.
Switches Spare 1 and Spare 2 were not installed switches. The switches were rejected on the basis of pre-installation test data. Spare 1 was rejected on the basis of a LaSalle test.
Spare 2 was rejected on the basis of a SOR factory test.
Switch NO12BB was rejected not on the basis of a repeatability or an offset concern but was rejected as a result of an observed large drift in setpoint over a short period of time.
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