L-87-353, Responds to NRC 870721 Request for Addl Info Supporting Util Response to IE Bulletin 85-003.Electrical Power Removed from Unlisted Motor Operated Valves (Mov).Mov Reviewed for Compliance W/Ie Bulletin 85-003
| ML17221A363 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 08/21/1987 |
| From: | Woody C FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| IEB-85-003, IEB-85-3, L-87-353, NUDOCS 8708280337 | |
| Download: ML17221A363 (3) | |
Text
REGULA I Y INFORMATION DISTRIBUTIO YSTEM (RIDS)
ACCESSION NBR: 8708280337 DOC. DATE: 87/08/21 NOTARIZED:
NO FACIL: 50-335 St.
Lucie Planti Unit ii Florida Power 8c Light Co.
50-389 St.
Lucie Planti Unit 2i Florida Power
& Light Co.
AUTH. NAME AUTHOR AFFILIATION WOODY'. O.
Florida Power h Light Co.
RECIP. NAME
'ECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
DOCKET 05000335 05000389
SUBJECT:
Responds to NRC 870721 request for addi 'info supporting util response to IE Bulletin 85-03. Electrical power removed from unlisted motor operated valves (MOV). MOV reviewed for compliance w/IE Bulletin 85-03.
DISTRIBUTION CODE:
IE11D COPIES RECEIVED: LTR i
ENCL l
SIZE:
TITLE: Bulletin Response (50 DKT)
NOTES:
REC IP IENT ID CODE/NAME PD2-2 LA TOUR IGNY> E INTERNAL: AEOD/DOA AEOD/DSP/TPAB NRR/DEST/ADS NRR/DOEA/GCB NRR/PMAS/ILRB RES/DE/EIB EXTERNAL:
LPDR NSIC COPIES LTTR ENCL 1
0 1
1 1
1 1
1 1
1 1
1
.1 1
1 1
1 1
1 RECIPIENT ID CODE/NAME PD2-2 PD AEOD/DSP NRR/DEBT/ADE NRR/DOEA/EAB N
EP/EPB REG FI 02 N
E 01 NRC PDR COPIES LTTR ENCL 1
1 1
1' 1
1 1
1 1
1 1
1 1
1 TOTAL NUMBER OF COPIES REQUIRED:
LTTR 18 ENCL 17
~
f
~
I P.
X 14000. JUNO BEACH, FL 3340S 0420 AUGUST. 2,i 1987 L-87-353 U. S. Nuclear Regulatory Commission Attn: Document control Desk Washington, D.C. 20555 Gentlemen:
Re:
St. Lucie Plant Units I and 2 Docket Nos. 50-335 and 50-389 IE Bulletin 85-03 Re vest for Additional Information The attached information is in response to your letter dated July 2 I, l987 (Luis A. Reyes to C. O. Woody), which requested additional information in support of the Region II staff's review of Florida Power 8 Light's response to IE Bulletin 85-03 for our St. Lucie Units I nd 2.
Should there be additional information needed to,support your review, please contact us.
Very truly yours, C.. Woody G
up Vice President uclear Energy COW/GR M/gp Attachment cc:
Dr. J. Nelson Grace, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant 8708280337 87082i PDR ADOCK 05000335 p
r a~nlnar/1 an FPL Group company
IE BULLETIN 85-03 ADDITIONAL INFORMATION ST. LUCIE UNITS I AND 2 QUESTION I: Unlisted MOVs V-36 I4, -3624, -3634, and -3644 in discharge lines of the safety injection tank system are shown locked open (fail as is) on Drawing 8770-G-078, Sheet l3I, Revision 3, for Unit I. If power is removed from the motors in addition to the locked-open position of these MOVs, please state this in your response.
Otherwise, address the effect of assuming inadvertent equipment operations as required by Action Item a of the bulletin, and revise the listing of the response of 08-I5-86 to include these valves.
NOTE: For Unit 2, See Drawing 2998-G-078, Sheet. I32, Revision 0.
RESPONSE I: Electrical power is removed from these valves.
QUESTION 2: Has water hammer due to valve closure been considered in the determination of pressure differentials?
If not, please explain?
RESPONSE
2: The motor operated valves reviewed for IEB 85-03 for St. Lucie Units I and 2 are slow acting valves.
A survey of the closure times and piping lengths was conducted to determine the most limiting system configuration and valve operating characteristics with respect to water hammer.
An evaluation was performed to verify that the worst case system configuration and valve operating characteristics would not cause significant water hammer loading due to valve closure.
This bounding case was shown to produce a
maximum total differential pressure (system differential pressure plys a conservative water hammer differential pressure) of less than one third of the maximum differential pressure calculated for IEB 85-03.
QUESTION I: ~PI I
A I I,*
I the bulletin to include the following details as a minimum:
(a) commitment to a
training program for setting
- switches, maintaining valve operators, using signature testing equipment and interpreting signatures, and (b) commitment to justify continued operation of a
valve determined to be inoperable.
RESPONSE
3: (a)
PSL has motor operated valve (MOV) switch adjustment and MOVATS training modules written. These are currently being reviewed for incorporation into
- the training program.
Appropriate Electrical Maintenance personnel have been provided training in the use of MOVATS equipment and signature interpretation by
- MOVATS, Inc.
Limitorque operator training has been provided by Power Safety International.
Maintenance and testing of MOVs are controlled by approved plant procedures.-
(b)
Action will be taken as required by Technical Specifications for any MOVs found to be inoperable.
GR M2/025/2