ML20137L191
| ML20137L191 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 04/29/1996 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20137K821 | List:
|
| References | |
| FOIA-96-485 JPN-PSL-SEFJ-96, JPN-PSL-SEFJ-96-020, JPN-PSL-SEFJ-96-20, NUDOCS 9704070170 | |
| Download: ML20137L191 (10) | |
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i FLORIDA POWER & LIGHT CO.
ST. LUCIE UNIT 1 l
l Engineering Evaluation
- Refueling Equipment Underload and overload settings j
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.i JPN-PSL-SEFJ-96-020 Rev 0 l 1 i April 29, 1996 l Quality Related i
Nuclear Fuel Nuclear Technical Support 4
4 9704070170 970402 PDR FOIA . . ,,,
BINDER 96-485 PDR
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.05/15/96 12:08 NUCLEAR FUEL JB o 84677556 NO.301 P004 Jrs-PsL-surJ-es-ozo new. o Page 2 of 9 REVIEW AND APPROVAL RECORD PLANT St. Lucie UNIT 1 TITLE Refuelina Eauinmant Underload and Overload Settinas LEAD DISCIPLINE Nuclear Fuel / PSL Fuel Encineerino ENGINEERING ORGANIZATION __ Nuclear Technical Sucoort REVIEW / APPROVAL:
INTERFACE TYPE FPL GROUP PREPARED VERIFIED APPROVED APPROVED
- summmmmmma
-sumummesmummmmmmmmmeimmmmmmmmmmmmmesummmmmmmmmmmemummmmmmmmmmmme MECH X N/A N/A N/A ELECT X N/A N/A N/A I&C X N/A N/A N/A CIVIL X N/A N/A N/A I NUC" X N/A N/A N/A ESI X N/A N/A N/A F 4 [
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- For contractor Evals As Determined by Projects ** Review Interface As A Man On All 10CTK50.59 Evala and FLAs FPL PROJECTS APPROVAL: !d4 1 08b DATE: #!f4 OTHER INTERFACES
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,05/15/96 12:08 NUCLEAR FUEL JB + 84677556 NO.301 P005 JPN-PS's-SEFJ-9 6-02 0 Rev 0 2 age 3 of 9 TABLE OF CONTE 3lTS Eggg DESCRIPTION 4
I. Purpose And Scope . . . . . . . . . . . . . .
II. Calculation of Refueling Equipment Settings . . . . . 4 7
III. Conclusions . . . . . . . . . . . . . .
Actions Required . . . . . . . . . . . . . . s IV.
Verification Summary . . . . . . . . . . . . . . 8 V.
. . - , . . . . . . . . . . 8 VI. References ATTACHMENT 2 Pages
- 1. Siemens Letter TMH:96:032 . . . .. . . . . . . .
Assembly and Equipment Weights . . . . . . . . . 2 Pages 2.
Refueling Equipment Weight Information . . . . . 6 Pages 3.
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.1 machine (SMK) load cell settings. The overload and underload I setpoints will provide adequate margin during the refueling operations. This margin will account for resistance encountered l while lifting or lowering the fuel assemblies, without exceeding l
the fuel assembly and refueling equipment design limits.
t is recommanded that the hoist box and the fue173izambly-weig5~fs j be measured during the refueling outage. If the actual weights (measur.4 during refueling outage) differ from those used in this j evaluation in the non-conservative direction, the setpoints should a be re-evaluatea (see sections IH . 1
'The method used for setpoint calculation is similar to that used
!. for St. Lucie Unit 2 (Reference 3).
3 II. CALCULATION OF REFUELING EOUIPMENT SETTINGS:
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j Refueling Machine 1 i In Reference 1 (Attachment 1) Siemens Power Corporation (SPC)
! provided the St. Lucie Unit i fuel assembly information to be used l
in determining underload and overload settings on the refueling )
' equipment. The allowable safety value or the force limit from fuel j assembly damage considerations has been specified as 200 pounds for ;
the St. Lucie Unit 1 SPC fuel. This value is representative of the ]
maximum spacer side plate shear strength, which should be accounted !
for in determining refueling equipment load setpoints. l I
The I & c procedure 1-14001a2 (Reference 2) currently has fuel only i underload and overload limits as (1085 1 5) pounds and (1460 1 5) pounds, respectively. The lightest and heaviest fuel assembly weights (wet) used are 1096 pounds and 1131 pounds, respectively.
The weight data for the variouir, components needed for the underload and overload setpoint calculations are defined in Attachment 2.
Minimum Fuel Assembly Wet Weight = 1105 pounds Maximum Fuel Assembly Wat Weight (except VFRA) = 1155 pounds VPRA assembly Wet Weight = 1305 pounds Grapple Wet Weight = 130 pounds
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, Hoist Box Wet Weight = 1130 pounds ;
i Hoist Box Partially Dry Weight = 1220 pounds i These fuel assembly weights are comparable to those in Reference 2. -
- Per Reference 2, the part strength CEA wet weight is 57 pounds.
- The following load setpoints are calculated for the refueling j machine.
Fuel'only Underload = Max Assy Wt. + CEA wt. + % apple -
(Includes Grapple) Safety Margin ;
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= 1155 + 57 + 130 - 200 ,
= 1142 pounds
- For vessel fluence reduction assembly, the underload setpoint j is calculated by using the VFRA weight'without the CEAs. The i i
underload setpoint becomes (1305 + 130 - 200) = 1235 pounds. )
s Using a margin of 5 pounds for calibration (Reference 2),
l Fuel only Underload setpoint becomes --> 1240 pounds f Fuel only overload = Min Assy Wt. + Grapple + Safety (Includes Grapple) Margin )
= 1105 + 130 + 200 l
= 1435 pounds 1 For VFRA, the setpoint is (1305 + 130 + 200) = 1635 pounds.
Using a margin of 5 pounds for calibration (Reference 2),
Fuel Only overload Setpoint becomes --> 1430 pounds For VFRA, the overload setpoint is 1630 pounds.
Fuel plus hoist underload setpoint provides protection to prevent fuel assembly movement out of the hoist. This condition may occur if the hoist box becomes jammed during lowering of the hoist with the fuel assembly inside. The overload setpoint provides protection for the machine against damage by lifting weights above certain limits. The formulae provided below are obtained from Reference 4. The setpoints are calculated conservatively without accounting for the VFRA weight.
Fuel +5eist Underload = Wet Hoist Wt. + Min Assy Wt. +
(Includes Grap- ') Grapple - Margin for Operation
= 17^^ + 1105 + 130 - 200
= 2L pounds 1 Using a margin of 5 pounds for calibration (Reference 2), i Fuel + Hoist Underload Setpoint becomes --> 2170 pounds l l
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Fuel +Eoist Overload = Partial dry Hoist Wt. + Max Assy Wt.
(Includes Grapple) + CEA Wt. + Grapple + Margin for Operation i s
= 1220 + 1155 + 57 + 130 + 250 l
= 2812 pounds
! Using a margin of 5 pounds for calibration (Reference 2),
) Fuel + Hoist overload Setpoint becomes --> 2807 pounds i
Sment ruel mandlina Machine l
The I la C procedure 1-1400183 (Reference 8) currently has underload l
and overload limits as (1283 1 5) pounds and (1575 t 5) pounds, i respectively. '
The weight data for the various components needed for the underload
- and overload setpoint ca.lculations are defined in Attachment 2.
a 4 Minimum Fuel Assembly Wet Weight = 1105 pounds Maximum Fuel Assembly Wet Weight (except VFRA) = 1155 pounds ,
1 i
j VFRA assembly Wet Weight = 1305 pounds 1
' SFM Tool Wet Weight = 293 pounds The following load setpoints are calculated for the spent fuel machine.
SFM Underload = Max Assy.Wt. + CEA Wt. + Tool Wt. - !
Safety Margin l (Includes Tool) = 1155 + 57 + 293 - 200
= 1305 pounds !
, For vessel fluence reduction assembly, the underload setpoint is calculated by using the VFRA weight without the CEAs. The i underload setpoint becomes (1305 + 293 - 200) = 1398 pounds. j 1
Using a margin of 5 pounds for calibration (Reference 8),
Underload Satpoint becomes --> 1403 pounds Min Assy Wt. + Tool Wt. + Safety SFM Overload -
l Margin (Includes Tool) = 1105 + 293 + 200 l 1
= 1598 pounds j For VFRA, the setpoint is (1305 + 293 + 200) = 1798 pounds.
Using a margin of 5 pounds for calibration (Reference 8),
Overload Setpoint becomes --> 1593 pounds For VFRA, the overload setpoint is 1793 pounds. .
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' Rev 0 Page 7 of 9 Expected variations in water temperature and boron concentration would have a very small effect on the wet weights well within the applied margin.
i III. COMCLUSIONS: 1 This evaluation has determined new underload and overload settings !
for the refueling machine and the spent fuel handling machine, l l consistent with the safety margin limit specified in Reference 1. , (
! Refuelina Machine
! Two sets of setpoints are provided for the refueling r.achine - one s
set for typical fuel assemblies and the other for thts Vessel Flux l Reduction Assemblies.
Fuel Assemblies Fuel only (with grapple) underload setpoint 114715 pounds Fuel only (with grapple) overload setpoint 1430 5 pounds l
VFRA j
VFRA only (with grapple) underload setpoint 1240 5 pounds VFRA only (with grapple) overload setpoint 163015 pounds Additionally setpoints are provided for fuel and the hoist. These setpoints cover all fuel assemblies.
Fuel + Hoist (with grapple) underload setpoint 217015 pounds l Fuel + Hoist (with grapple) overload setpoint 2s0715 pounds l e
sment Fuel Machine Two sets of setpoints are provided for the SFP machine - one set for typical fuel r semblies and the other for the Vessel Flur Reduction Assemblies..
j Fuel' Assemblies Fuel only (with grapple) underload setpoint 131015 pounds Fuel only (with grapple) overload setpoint 1593 5 pounds VFRA VFRA only (with grapple) underload setpoint 140315 pounds VFRA only (with grapple) overload setpoint 1793 5 pounds
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i ACTIONS REDDIRED ZY.
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i It is recommended that fuel assembly and hoist box weights be l
measured during the outage to confirm the range of values used in 4 this evaluation.
1105 to 1155 pounds i Fuel assemblies other than VFRA . . . . .
1305 pounds maximum i VFRA 1130 to 1220 pounds
- Hoist Box If the measured weights differ from the above used weights in the 2 non-conservative direction, the setpoints should be re-evaluated.
4 V. VERIFICATION.SmORARY:
This engineering evaluation, prepared per ENG QI 2.0, has been logically developed and used the necessary design and reference materials to support the conclusions derived. The underload and i overload settings evaluated here do not affect the safety of the are used on the refueling i p.' ant. These settings, however, equipmenn as trip setpoints to maintain loads on the assemblies j
witbin the desired values for safe fuel handling operations.
Therefore, this engineering evaluation has been classified 'as Quali's:y Related.
VI. REL3RENr.EA:
Lucie Onit 1, February 14, 1996 (Attachment 1)
- 2. I & C Prscedure 1-1400182, Revision 1, Refuelina Machine Load cell Calibration
- 3. JPN Evaluation JPN-PSL-SEFJ-95-043, Revision 3, Refuelina Machina Underload and Overload Settinus
- 4. Tech Manual 8770-5810 Vol I, R9, Refuelina Eauinment Vol I
- 5. JPN Calculation PSL-1FJF-91-060, Revision 0, Core Desian and Accident Isotonic Inventerv Innut Data for the Modular Analysis Procram (MAAP) St. Lucie Unit 1 Sesonske, Nuclear Reactor Enaineerina, Van
- 6. Glasstone &
Nostrand Reinhold Co. i l
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- 7. PC/M No. 054-194, Fuel Reload for Cycle 13 (St. Lucie Unit 1) ,
Revision 0
- 8. I & C Procedure 1-1400183, Revision 2, Jeant Fuel Machine Load Systa== calibration
- 9. St. Lucia Unit 1 Cycles 12 and 13 Refueling Log (Attachment 3) 10, Mark's Standard Handbook for Mechanical Encrineers , Seventh Edition, McGraw Hill Book Company (Page 6-80)
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Inter-Office Correspondence
, PPL 3
i JPN-SPSL-96-0211 l.
To: S.A. Valdes Date: May 8, 1996 From: D.J. Denver
.[ Department: JPN/NF/JB j subject: St. Lucie Unit 1 Refueling Equipment Underload and Overload Settings JPN-PSL-SEFJ-96-020, Rev.1 ,
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' Attached is an engineering evaluation performed by Nuclear Fuel to determine the refueling equipment load cell setpoints. These setpoints are based on the available equipment and fuel assembly' weight information. Revision 1 to this evaluation deleted the requirement that the actual weights of equipment be checked during the upcoming 1996 outage.
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- If you have any questions, please contact Jay Kabadi in Juno at 694-3364.
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Attachment:
JPN-PSL-SEFJ-96-020, Rev. 1 xc:
R. Dailey F. Gusmano D. W. Howard J. N. Kabadi R. M. Klein L. A. Martin K. H. Nordmeyer C. G. O'Farrill C. Villard w/o D
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