ML20212P041

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Rev 7 to Maint Procedure MP-162, Maint of Emergency Feedwater Pump Turbine Bearings
ML20212P041
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 10/06/1986
From: Murgatroyd R
FLORIDA POWER CORP.
To:
Shared Package
ML20212N983 List: ... further results
References
MP-162, NUDOCS 8703130255
Download: ML20212P041 (13)
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_- _x:r MAINTENANCE PROCEDURE s

MP-162 FLORIDA POWER CORPORATION CRYSTAL RIVER UNIT 3 MAINTENANCE OF EMERGENCY FEEDWATER PUMP TURBINE BEARINGS THIS PROCEDURE ADDRESSES SAFETT RELATED COMPONENTS s

APPROVED BY: Respont.Able Section Superintendent /

Supervisor MDW 'fC Date /C blh '

INTERPRETATION CONTACT: Nuclear Maintenance Superintendent I

G703130255 870305 PDR ADOCK 05000302 P PDH t-,--- -r-- ,

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1.0 PURPOSE

= 1.1 This procedure is to provide instructions for the disassembly and reassembly of Emergency Feedwater Turbine (EFTB-1) bear-ings.

Procedure Section Disassembly 7.1 Reassembly 7.2 Post Maintenance Testing 8.0 l6 4

2.0 REFERENCES

2.1 IMPLEMENTING REFERENCES 2.1.1 CP-115, In-Plant Equipment Clearance and Switching Orders 2.1.2 OP-605, Feedwater System 2.1.3 SP-349, Auxiliary Feedwater System Operability Demonstration 2.1.4 SP-601, Inspection and Testing of Lifting D~evices 2.1.5 MP-122, Disassembly and Reassembly of Flanged Connections 2.1.6 PM-133, Equipment Lubrication Procedure 2.2 DEVELOPMENTAL REFERENCES 2.2.1 Nuclear Plant Library Instruction Manual 336, Terry Steam Turbine Company, Emergency Feedwater Pump Turbine r

MP-162 Rev. .

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2.2.2 Nuclear Plant Library Instruction Manual, #108, Ingersoll-Rand, Emergency Feed Pump 2.2.3 Nuclear Plant Library Instrue. tion Manual #375, Gulf Lubrication and Instruction Manual 3.0 ENCLOSURES Enclosure 1 Equipment Alignment Record (7 Enclosure 2 Vibration, Temperature, Velocity Machine Drawing l 1

Enclosure 3 Oil Sight Glass Calibration Enclosure 4 Govenor End Lower Bearing Preparation (7 4.0 LIMITS AND PRECAUTIONS 4.1 Should it become necessary to remove equipment from the piping system for extended periods of time, notify the Nuclear Plant Engineering and Technical Services Manager to evaluate the need for temporary seismic piping restraints.

5.0 EOUIPMENT AND PERSONNEL REOUIREMENTS 5.1 Personnel assigned shall be knowledgeable, experienced and qualified to perform the specified tasks as determined by -he appropriate supervisor. .

5.2 Rigging adequate to disassemble pump.

Page 2 MP-162 Rev. O 7*

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5.3 Scaffolding (if required) 5.4 Tools (as required - general usage type) [7 5.5 Replacement Parts (as required) 5.6 Hand Held Pyrometer (0-500*F) or equivalent l7 5.7 Displacement & Velocity IRD model 306 or equivalent l 6.0 REOUIRED INITIAL CONDITIONS AND PLANT STATUS 6.1 The equipment to be worked on is to be isolated and removed from service using an approved Operating Procedure and Equip-ment Clearance Order per CP-115, In-Plant Equipment Clearance and Switching Orders.

6.2 All slings, shackles, and hooks shall be tested in accordance with SP-601, Inspection and Testing of Lifting Devices.

6.3 Obtain a Radiation Work Permit (RWP).

7.0 PROCEDURE 7.0.1 Ensure o Limits and Precautions of Section 4.0 have been reviewed, o Equipment and Personnel are available per Section 5.0.

o Initial Conditions of Section 6.0 have been met.

i Completed by Date i

l l 7.0.2 The man in charge of performing this activity shall notify the l

l Nuclear Quality Control (NQC) Supervisor or his designee' at i

commencement of this activity and at each " HOLD POINT" l

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l MP-162 Rev. ^* -

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7.1 DISASSEMBLY 7.1.1 Remove, interfacing auxiliary piping per MP-122, Disassembly and Reassembly of Flanged Connections.

7.1.2 Disconnect coupling and drain oil from bearing housing.

7.1.3 Remove o As required, governor trip linkage l5 o Bearing cover capscrews or bolts o Bearing cover i

o Bearing capscrews 7.1.4 Store all capscrews and bearing cover.

Storage Location Completed by Date 7.1.5 Carefully lift off top half of bearing.

7.1.6 Using a sling or Porta-Power, raise shaft enough to remove lower half of bearing.

7.1.7 ' HOLD POINT

  • Visually inspect both halves of bearing for damage.

NOTE: Notify the Nuclear Mechanical / Building Service Super-visor for problem resolution.

Inspected by Date Completed by Date I

Mp-162 Rev. 0'7 -

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7.1.8 Wrap and store.

i Storage Location Completed by Date 7.1.9 " HOLD POINT

  • Visually inspect turbine shaft for damage.

NOTE: Notify the Nuclear Mechanical / Building Service Super-visor for problem resolution.

I Inspected by Date Completed by Date 7.1.10 If replacement or refurbishment is needed, Site Nuclear (7 Engineering Services will determine repair method. (

NOTE: If the oil slinger ring or the oil sight glass is replaced, calibrate the oil reservoir oil level per Enclosure 3. (7 7.2 REASSEMBLY 7.2.1 Bearina Fit and Preparation (7 7.2.2 If replacing the govenor end bearing, prepare the bearing per (7 Steps 7.2.3 through 7.2.7. (

i Mp-162 Rev. M 'g, page 5 a

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NOTE: If replacing the coupling end bearing, ensure that the l7 excess casting on either side of the machined bearing l seating area does not interfere with the proper seating l of the bearing. If there is-interference, contact Site l Nuclear Engineering Services. l 7.2.3 Redrill the unused oil hole in the lower bearing shell to 11/32 l7 inch diameter. l 7.2.4 Drill 7/16 inch diameter by 3/16 inch deep from the outside, to j form a counterbore. l 7.2.5 Tap the hole to 1/8" NpT from the outside. . l NOTE: The plug is a safety related component.  !?

7.2.6 Install an A105 C.S. pipe plug, 1/8"fNpT. If any of the plug j' projects above the outside surface, tap the threads deeper j until the plug is flush or deeper. l 7.2.7 File the lower half of the bearing per Enclosure 4. l 7.2.8 Install lower portion of bearing. l 7.2.9 Lower shaft into bearing.

7.2.10

  • HOLD POINT" Carefully iilstall upper portion bearing cover and measure clearance.

NOTE: Proper clearance for journal bearing is 0.007 to 0.009 inches. The Nuclear Mechanical / Building Service Super-visor will resolve readings outside this range by replacing bearing.

Actual Clearance Inspected by Date Completed by Date Mp-162 Rev. O 7. Page 6

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7.2.11 Install o Bearing cover cap screws or bolts o Bearing cover *

. Completed by Date 7.2.12 Fill bearing housing with lubricant specified in PM-133, Equip-ment Lubrication Procedure.

7.2.13

  • HOLD POINT" Align turbine to pump using Enclosure 1. l7 i Inspected by Date Completed by Date 7.2.14 Couple turbine to pump.

7.2.15 Reinstall auxiliary piping per MP-122, Disassembly- and Reassembly of Flanged Connections.

Completed by Date 7.2.16 If removed, reinstall governor trip linkage. Readjust linkage as required.

8.0 POST-MAINTENANCE TESTING AND SYSTEM RES*f0 RATION 8.1 Upon completion of the maintenance activity, the equipment is to be returned to service by use of an approved Operating Procedure and/or by release of the Equipment Clearance Order.

MP-162 Rev. ,, b 7 Page 7 (Continued on Page 7a)

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8.2 A functional test of the equipment involved is to be performed per approved Operating Procedures or Surveillance procedures, whichever is applicable.

NOTE: A hand-held pyrometer (0-500*F) or equivalent and a l7 portable vibration meter, displacement & velocity IRD l sodel 306 or equivalent should be used to obtain the l necessary data for recording on Enclosure 2. Pump l

should be run for at least 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> before data taking l s

. ceases. l 8.3 Check turbine and pump bearing vibrations and temperatures as l7 determined by the Nuclear Mechanical / Building Service Super- l visor and record results on Enclosure 2. l l

9 MP-162 Rev. .0 7 page 7a

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ENCLOSURE 1 j7 f~~

EQUIPMENT ALIGNMENT RECORD Equipment Tag No. EFTB-1 Manufacturer Terry Turbine Building Intermediate Serial No. Instruction Manual Maximum Operating Speed 4730 rem (trio set). 4030 rom focerational)

Alignment Tolerance: Face to Face 0.002" TIR Rim to Rim 0.004" TIR Thermal rise specified (if any) 0.008* - 0.010" vertically below ,

cume (EFP-2)

COUPLING ALIGNMENT RECORD

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Face to Face its .2 A. =

Dial Indicator No.

Alignment Verified By: NQC Date Coupling Alignment By: Date Mechanic's Name Verified By: Date Maintenance Supervisor O

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7,ECt0SURE 2 [7

' MACHINE SKETCH LOCAL PERFORMANCE DATA Displacement Velocity Oil p .= c (mils-ok to ek) (in/sec) Level ae . , e ..

3 - Normal y o , .t 3 t @ t Oil Level

$ U 3 U 3 Verified r-- "g ,' 2  % #" d * * * (initials)

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  • A*, 'C', and *D' vibration measured in the 23 23 23 horizontal direction (h). _C., R3 f.2 M J 3
  • B* vibration measured in the vertical $$ $$ $$

D 2.2 .45 direction (v).

Run Start hr.

(NOTE: Any data exceeding the recommended limits shown -

refer to NPE.) Run Stopped hr. ,

(NOTE: 30 min readings are recommended following the initial reading.)

TIME: TIME: I' Velocity Temperature Displacement Velocity Temperature POSIT::0N Displacement A (h '

B (v -

C ( 1 '

D( 1 6 Pu_p oil level - ok (/) l ,----------------------------------

bine oil level - ok (/) I  :----------------------------------

TIME: TIME: I POSIT"0N Displacement Velocity Temperature Displacement Velocity Temeenture A (h B (v '

C ( 1 D ( 1 '

Purp oil level - ok (<) l l----------------------------------

Turbine oil level - ok (s1 l . ----------------------------------

TIME: TIME:

Velocity Temperature Displacement Velocity Temperature POSIT::0N Displacement A (h -

B (v '

C ( 1.

D ( 1 Putp oil level - ok (/) ----------------------------------

Turbine oil level - ok b/) 1 TIME: TIME:

Velocity Temperature Displacement Velocity Temperature.

POS::T::0N Displacement A Lh1 B ' v C th -

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Pu.p oil level - ok ( /)

  • bine oil level - ok (/)

' Lass than 205'T (alert) 'Less than 180'T (alert)

MP-162 Rev p Page 9

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CALIBRATION METHOD FOR OIL SIGHT GLASS level in ring

, The proper center of the oil ,loi rings (inside diameter), lubricated seebearingsFigure 1. is 1/4" above the bottom dead All ring The level oiled turbines gauges haveare two equipped marks which with level indicate gauges the(one minimum in each andbearing maximumbox)l oi levels. These marks are approximately 3/8" (.375) apart.

Because the system is a closed system, the oil level may change due to evapora-tion, water, temperature, or leakage.

This system can be filled with the unit running or shutdown in either case, do not allow oil level to go above high level mark or below low Ievel mark. Too mu::n oil will cause ring draq (slippage of ring), speed of oil ring slows down there-fore less of oil carried to the bearing. Too little oil in bearing box has sas?

- effect, not enough oil will be carried to the bearings.

THl3 OAAWING IS:

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INSPECTED BY: ,.

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pggggg 1 RECCWENDED 01,L LEVEL FOR RING O!L LutRICATED REARIN

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ENCLOSURE 4 l7 GOVENOR END LOWER BEARING. PREPARATION Bottom view of the lower half of the bearing I

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l PREPARATION:

In the lower half of the bearing only, remove the excess material on the shoulders on either side of the machined area, i

l MP-162 Rev. . b 'I Page 11 (LAST PAGE) l

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