ML20217M997
| ML20217M997 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 08/20/1997 |
| From: | NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20217M993 | List: |
| References | |
| MP-726.1, NUDOCS 9708250413 | |
| Download: ML20217M997 (38) | |
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MILLSTONE NUCLEAR POWER STATION MAINTENANCE PROCEDURE Overhaul of Diesel-and Electric Motor-Driven Fire Protection Pumps MP 726.1
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PORC Mtg. No: _\\ Cn - i.7-)
Date:
R -an -co Effective Date:
8@-M 9708250413 970820 PDR ADOCK 05000245 e
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(%j Level of Use Subject Matter Expert:
General J. Pernal
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- Millstone Unit 1 Maintenance Procedure
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- Overhaul of Diesel-and Electric Motor-Driven Fire Protection Pumps TABLE OF CONTENTS 1.
PURPOSE....................................................2 2.
P R E R EQ U I S ITES............................................
2 3.
P R ECAUTI O N S...............................................
6 4.
I N ST R U CTI O N S..............................................
8 4.1 Pump Disassembly........................................
8 4.2 Pump Cleaning and Inspection.............................
14 4.3 P u m p Re p a i r............................................
16 4.4 Pu mp Asse mbly.........................................
18 4.5 Operational Checkout....................................
29
- 5.
REVIEW AND SIGN - OFF....................................
31
- m 6.
R E FE R EN C ES -...............................................
31 sJ 7.
SUM M ARY OF CI IANGES....................................
32 ATTACIIMENTS AND FORMS, " Pump Cross-Section View".......................
33
- Attachment 2, " Inspection Data Record"..........................
35
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MP 726.1 Rev.4 General-1 of 37
ja 1.__ PURPOSE V
1.1 - Objective The objective of this procedure ia to provide instructions for overhauling the diesel-driven and electric motor-driven driven fire pumps.
1.2 Discussion This procedure provides guidance for overhauling the diesel-driven and electrically driven fire pumps. Each of these pumps is a type-A, horizontal, single-stage, split-case centrifugal pump manufactured by -
the Peericts Pump Co.
The overhaul instructions provided in sections 4.1 through 4.5 cover pump removal, disassembly, cleaning, inspection, repair, assembly, and operational checkout.
1.3 Applicability This procedure applies to the following local ids:
M7-7(PMP), " Diesel Fire-Pump"
=
V M7-8(PMP)," Electric Motor Driven Fire Pump-Pump"
- 2. PREREOUISITES 2.1 General 2.1.1 An Automated Work Order (AWO) has been prepared and approved as necessary by the Performance Evaluations (PE) l Department and Unit 1 Operations Department.
2.2 Documents 2.2.1 C MP 710A," Horizontal Shaft Alignment" 2.2.2 MP 791.0 (Att)," Fire Protection (332)"
-l 2.2.3.
WC 10 (Att)," Lifted Leads and Jumper Device Data Sheet" AV Level of Use STOP THINK '
'ACT REVIEW Generai y*,"f 37
'4
2.3 Measuring and Test Equipment (M&TE)
Y 2.3.1 All M&TE has been calibrated in accordance with WC 8,
" Control and Calibration of Measuring and Test Equipment" and the calibration is current.
2.3.2 Thermocouple thermometer capable of measuring up to 400 F with an accuracy of l'F, such as OA-1703 l
x 2.3.3 Dial indicator with a 1-inch travel and minimum accuracy of 0.0005 inch, ouch as OA-1504 l
2.3.4 Inside micrometer with a range of 11 to 12 inches and an accuracy 01 0.0005 inch, such as OA-1525 2.3.5 Outside micrometer with a range of 11 to 12 inches and an accuracy of 0.0005 inch, such as MPS-29 2.4 Tools and Consumables 2.4.1
'Ibols 1 i Coupling hub puller bolts /2 nch (2 required)
OC Feeler gage Jacking bolts,1 i
/2 nch-10 NC (3 required)
Mallet Mechanic's standard tool kit Small, blunt chisel Spanner wrench Strap wrench Wire brush
(~'s Level of Use STOP THINK ACT REVIEW Generai Rev.4 3 of 37
2.4.2 Equipment
'tU Bearing puller or arbor press Chain fall,1/2-ton capacity minimum
[
Coupling puller -
Floor stands Grease gun
_ liydraulic press Induction bearing heater Pipe sleeve (21/2-inch, schedule 40)
Slings,1/2-ton capacity minimum Small grinder Spanner wrctich U
Torch with rosebud V-blocks or lathe O
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Level of USe
'STOP ^
1THINK' ACT' ' REVIEW Re 4 General
2.4.3
- Spare Parts ~
Hearing housing gasket (2 required)
Bearing cover gasket (2 required)
Case wear ring (2 required)
Casing gasket
. Coupling key (2 required)
Gland (2 required)
Impeller Impeller key Impeller wear ring (2 required)
. Inboard bearing
. Lantern ring (2 required)
- Outboard bearing (2 required)
Packing (John Crane 810,5811, Super Seal No.1 or -
equivalent)
Shaft Shaft sleeve (2 required)
P
)
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?ACT REV!EY/
4 General 5 d37
O 2.4.4 Consumables V
Approved cleaning solvent such as Polywater Ilydrafoam 2020
_ Approved gasket adhesive such as aviation-grade Permatex Approved 0-ring lubricant such as Dow Corning M55 Approved thread sealant such as PRI-101N Bearing lubricant Coupling lubricant (M7-7(PM P) only)
Cribbing Fine-grit abrasive Herculite Low-lint cloths 0y Shim stock (approximately 0.001 inch thick) or a bar of soap 2.5 Definitions 2.5.1 DE-MAGNETIZE - To deprive of magnetic properties
- 3. PRECAUTIONS 3.1' Prior to disassembly, match mark comp'onents as necessary to aid in reassembly. Do not match mark delicate parts or critical mating surfaces.
3.2 - Ensure all consumables to be used in or on power plant components are 4
controlled in accordance with CC 1," Control of Chemical Consumable Products," and that a Restricted Use Permit has been issued as necessary.
3.3 Insulation, packing, and gaskets may contain asbestos. To prevent injury to
_ personnel, asbestos must be handled in accordance with WP 8003 (Att),
" Control of Asbestos Containing Materials."
3.4 OPS Form 273-7.2," Fire Protection Technical Requirements" specification 3.1.A.2 requires that with one pump and/or one water supply inoperable, restore the inoperable equipment to OPERABLE status
[]
within 7 days or provide an alternate backup pump or water supply.
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REVIEW Ra. 4 General
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3.5 Ensure all combustible materials, flammable liquids, compressed gasses, i
and ignition sources are used in accordance with WC 7," Fire Protection Program."
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Level of Use STOP THINK ACT REVIEW General 7 of 37
- 4. INSTRUCTIONS 4.1 Pump Disassembly 4.1.1 DISCONNECT insulation heat-trace wiring.
4.1.2 RECORD lifted leads onto WC 10 (Att)," Lifted Leads and Jumper Device Data Sheet."
STOP WARNING STOP Pump insulation may contain asbestos. To avoid injury to personnel, asbestos must be handled in accordance with WP 8003 (Att)," Control of Asbestos Containing Materials."
4.1.3 REMOVE pump insulation.
4.1.4 REMOVE coupling guard.
NOTE Electric motor h17-8(MTR) and electric motor-driven fire pum M7-8(PMP) are joined by a ri electric motor from the pump, gid coupling. In order to uncouple heit may be ne motor.
4.1.5 IE necessary, MOVE motor as necessary to allow uncoupling of pump and motor.
4.1.6 UNCOUPl.E pump from driver.
4.1.7 MEASURE as-found coupling gap and shaft gap dimensions.
4.1.8 RECORD as-found coupling gap and shaft gap dimensions onto.
- 9 I
Level of Use STOP THINK ACT REVIEW General gg737
4.1.9 DISCONNECT and REMOVE the following as necessary:
n f
Priming and stuffing box piping Stuffing box drain piping Case drain piping Any interfering piping 4.1.10 REMOVE shrouds covering inboard and outboard stuffing boxes.
4.1.11 REMOVE nuts from inboard and outboard gland bolts (17B).
4.1.12 REMOYE inboard and outboard glands (17).
4.1.13 REMOVE upper casing (IB) as follows:
NOTE Upper casing weigiu approximately 165 lbs.
(*
.y a,
RIG upper cas:ng, b.
REMOVE fasteners securing upper casing to lower casing.
c.-
REMOVE casing dowels, d.
JACK upper casing from lower casing, i
c.
LIFT upper casing as straight as possible, and LOWER upper casing onto' cribbing.
'4.1.14 REMOVE fasteners securing inboard bearing cap to lower casing (1A).
4.1.15 REMOVE inboard bearing cap.
4.1.16 REMOVE fasteners securing outboard bearing cap to lower casing (1A).
- 4.1.17 REMOVE outboard bearing cap.
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" REVIEW Re 4 General 9
37
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-NOTE Rotating assemblyweigh approximately 165 lbs.
4.1.18 RIO rotating assembly adjacent to inboard and outboard
- bearings, 4.1.19 LIFT rotating assembly and case wear rings (7) as straight as possible, and LOWER rotating assembly onto floor stands.
4.1.20 REMOVE casing gasket.
4.1.21 REMOVE pump coupling hub as follows:
a.
REMOVE setscrews securing pump coupling hub to shaft (6).
b.
MOUNT coupling puller onto pump coupling hub.
NOTE AV Coupling hub removal may require the application of heat.
c.
TIGHTEN coupling puller until coupling hub offers -
moderate resistance.
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Level of Use sTop
- THINK ACT REVIEW Rev.4 Genera 99g37
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(A)
STOP WARNING STOP To prevent injury t personnel, all combustible materials, flammable liquids, compresse asses, and ignition sources must be used in accordance with W 7," Fire Protection Program."
C A UTIO N lb prevent damage to pump during coupling hub removal:
Temperature must not exceed 300*E Ileat must be applied evenly to coupling hub, d.
Using a torch with a rosebud, crenly HEAT pump coupling hub and TIGilTEN coupling puller until coupling hub slides off shaft, c.
REMOVE coupling hub key (46).
-A 4.1.22 REMOVE inboard-end components as follows:
g a.
LOOSEN, but do not remove, setscrew securing inboard water deflector (40) to shaft (6).
b.
REMOVE fasteners securing inboard bearing housing cover (35) to inboard bearing housing (31),
c.
Using a mallet, carefully REMOVE bearing housing.
d.
REMOVE case wear ring (?).
e.
Using a bearing puller or arbor press, REMOVE ball bearing (18) from shaft, f.
REMOVE shaft collar (68).
g.
REMOVE bearing cover gasket (73).
h.
REMOVE bearing cover (35).
i.
REMOVE water deflector (40).
V Level of Use STOP THINK
.ACT REVIEW Resr. 4 General 19,37
.r
- j. - REMOVE packing rings (13) and lantern ring (29).-
k.
DISPOSE of packing rings.
1.
REMOVE stuffing box bushing (63).
- m. LOOSEN, but do not remove, shaft sleeve nut setscrews.
n.
REMOVE shaft sleeve nut (20).
NOTE Inboard-end shaft sleeve has left-hand threads, o.
REMOVE shaft sleeve (14).
p.
REMOVE shaft sleeve 0-ring from shaft sleeve.
4.1.23_ REMOVE outboard-end components as follows:
a.
LOOSEN, but do not remove, setscrew securing outboard :
- water deflector (40) to shaft (6),
b.
REMOVE fasteners securing outboard bearing housing cover (35) to outboard bearing housing (33),
c.
Using a mallet, carefully REMOVE bearing housing.
d.
REMOVE case wear ring (7).
e.
REMOVE bearing locknut (22) and bearing lockwasher (69).
f.
Using a bearing puller or arbor press, REMOVE outer ball bearing (18) from pump shaft.
g.
Using a bearing puller or arbor press, REMOVE inner ball bearing from pump shaft.
- h. - REMOVE shaft collar (68).
. i.
REMOVE bearing cover gasket (73).
j.
REMOVE bearing cover (35).
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-STOP THINK
'ACT' REVIEW General R"4 2 f 37
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k.
REMOVE water deflector (40).
-Q 1.
REMOVE packing rings (13) and lantern ring (29).
- m. DISPOSE of packing rings.
n.
REMOVE stuffing box bushing (63).
o.
MEASURE dimension between end of shaft and face of impeller hub.
p.
RECORD measured dimension onto Attachment 2.
q.
LOOSEN, but do not remove, shaft sleeve nut setscrews.
r.
REMOVE shaft sleeve nut (20).
s.
REMOVE shaft sleeve (14).
t.
REMOVE shaft sleeve O-ring from shaft sleeve.
4.1.24 MATCil MARK impeller with respect to direction of rotation.
(9 4.1.25 Using a bearing puller or arbor press, REMOVE impeller (2) and V
impeller key (32).
NOTE Lower casing removal is unlikely. Pum
. performed with lower casing installed.p maintenance is normally 4.1.26 JE lower casing removal is required or desired, PERFORM the following:
STOP WARNING STOP J
Pipe insulation may contain asbestos. To prevent injury to personnel, N
insulation containing asbestos must be handled in accordance with WP S003 (Att)," Control of Asbestos Containing Materials."
REMOVE insulation from suction and discharge piping as a.
necessary, e\\J Level of Use STOP THINK '
ACT REVIEW General R"4 3 of 37
v, J
b.
DISCONNECT suction and discharge piping,
- c. - REMOVE bolts and washers securing lower casing to baseplate.
d.
REMOVE lower casing dowels.
IL NOTE l
Lower casing weighs approximately 250 lbs, c.
RlG lower casing.
f.
Carefully LIFT lower casing and LOWER onto cribbing, g.
REMOVE suction and discharge piping gaskets.
- h. - COVER suction and discharge pipe openings.
4.2 Pump Cleaning and Inspection 1%
V C AUTIO N All consumables to be used in or on p' Control of Chemical Consumable ower plant components must be controlled in accordance with CC 1, Products," and a Restricted Use Permit must be issued when necessary.
4.2.1 Using an approved cleaning solvent, CLEAN all components.
1 O
Level of USS STOP THINK
'ACT' REVIEW General _
Rev.4 14 of 37
A 4.2.2 Using a fine-grit abrasive or Scotch-Brite pads, REMOVE the
-V following from all mating flanges:
Dirt Paint Loose scale Corrosion Burrs Raised surfaces a
4.2.3 REMOVE any obstructions from baseplate drain.
NOTE Structural damage and defects include breakage, cracks, deformation, distortion, corrosion, pitting, scoring, scratches, crosion, abrasion, galling, and indications of misalignment, ba 4.2.4 Visually INSPECT all components for wear, structural defects, and damage.
4.2.5 IE inspection results are not satisfactory, Refer % Section 4.3, and REPAIR or REPLACE applicable component (s).
4.2.6 MEASURE and RECORD shaft runout at the following locations:
Outboard ball bearing
-Outboard shaft sleeve Impeller Inboard shaft sleeve Inboard ball bearing Coupling hub O
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'THINK ACT REVIEW General R5 oj'M
d.~
4.2.7 '
RECORD the following onto Attachment 2:
Measured TIR values M&TE serial No.
Calibration due date 4.2.8 E TIR is greater than 0.003 inch, Refer % Section 4.3, and REPAIR or REPLACE shaft, 4.2.9 MEASURE wear ring clearance at the following locations:
Outboard impeller-to-case wear ring Inboard impeller-to-case wear ring 4.2.10 RECORD the following onto Attachment 2:
Measured clearar.ce values M&TE serial numbers Oa Calibration duc dates
+
4.2.11 E impeller-to-case wear ring clearance is not 0.018 to 0.040 inch, Refer To Section 4.3, and REPLACE impeller-to-case wear rmgs.
4.2.12 E all inspection results are satisfactory, Go To Section 4.4 and ASSEMBLE pump.
4.3 - Pump Repair 4.3.1 E impeller-to-case wear ring inspection results are not satisfactory, OR clearance is not 0.018 to 0.040 inch, REPLACE impeller wear ring (8) as follows:
NOTE The instructions for replacing the inboard and outboard impeller wear rings are the same.
REMOVE impeller wear ring (8) as follows:
a.
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-Level of Use STOP THINK ACT' REVIEW Rev 4 General-
,,37
4 O
- 1) REMOVE impeller wear ring setscrews.
D
- 2) REMOVE impeller wear ring.
b.
INSTALL impeller wear ring (7) as follows:
- 1) Using a small file or fine-grit abrasive, REMOVE any burrs from wear ring seating surface.
- 2) Using an approved cleaning solvent, CLEAN wear ring seating surface.
- 3) Using an induction bearing heater or oven, IIEAT impeller wear ring.
- 4) INSTALL impeller wear ring onto impeller, and ENSURE wear ring is firmly sented against shoulder.
- 5) Using a drill with a No. 7 drill bit, DRILL 3 holes (approximately 120* apart) 1/2-inch deep into mating
_ joint of impeller and wear ring.
1
- 6) Using a /4-inch UNC tap, TIIREAD three holes drilled
,A in step 4.3.1.b.5).
y
- 7) INSTALL and TIGIITEN impeller wear ring setscrews.
c.
MEASURE wear ring clearance at the following locations as applicable:
Outboard impeller-to-case wear ring Inboa'rd impeller-to-case wear ring.
d.
RECORD tlie following onto Attachment 2:
Measured clearance value M&TE serial numbers Calibration due dates
/"'S 5
Level of Use STOP'
'IHINK ~
ACT' REVIEW Rev 4 General
,,37
- /
fw c.
PERFORM applicable action:
E impeller-to-case wear ring clearance is less than 0.018 inch, MAClilNE case wear ring or impeller wear ring as required to achieve proper clearance.
E impeller-to-case wear ring clearance is greater than 0.025 inch, REQUEST FLS to provide instructions for further maintenance.
4.4 Pump Assembly 4.4.1 INS 1 ALL impeller i :y (32) into shaft (6).
NOTE 1.
The impeller must be installed such that the impeller rotates cloclorise when viewed with the suction piping on the right.
2.
The impeller must be installed in the same position it was in prior to removal.
4.4.2 Refer 1b impeller location measurement in Attachment 2, and
.gs PRESS impeller onto shaft.
(
4.4.3 INSTALL outboard-end components as follows:
a.
Using an approved 0-ring lubricant, LUBRICATE shaft sleeve O-ring.
b.
INSTALL shaft sleeve O-ring into shaft sleeve (14).
C A UTIO N lb prevent damage to the shaft sleeve O-ring as the shaft sleeve is
- installed, the threaded portion of the shaft should be covered.
c.
Using a bar of soap or plastic shim stock, COVER threaded area of shaft.
'd.
Carefully INSTALL shaft sleeve onto shaft until shaft sleeve contacts impeller hub.
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ACT REVIEW General Rev. 4 18 of 37
y-c.
INSTALL, but do not tighten, shaft sleeve nut (20).
.v
. f.
INSTALL stuffing box bushing (63).
g.
With smaller outside diameter facing impeller, INSTALL water denector (40).
- h. - INSTALL bearing cover gasket (73).
i.
With bearing cover grease fitting facing upward, INSTALL bearing cover (35).
- j..lNSTALL shaft collar (68).
k.
INSTALL ball bearings (18) as follows:
NOTE 1.
Outboard and inboard bearings are not interchangeable.
2.
Outboard bearings are interchangeable.
A
- 1) JE replacement bearings include bearing shields,
(>
REMOVE bearing shields.
C A UTIO N
% prevent damake to bearing during heating process, bearing temperature must not exceed J0*E
- 2) IIEAT inner ball bearing to 200'F, and ENSURE temperature does not exceed 250*E
- 3) IE using an induction bearing heater, DE-MAGNETIZE inner ball bearing.
AU Level of Use STOP' THINK ACT REVIEW General
~
Rev 4 9
,3,
4
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NOTS Each outboard bearing has a wide inner race and narrow outer race on one side and a narrow inner race and wide outer race on the opposite side. The bearings must be installed with the wide outer races face-to-face,
- 4) With wide inner race and narrow outer race facing impeller, INSTALL inner ball bearing onto shaft, and 1lOLD bearing firmly against shaft collar until bearing cools.
CAUTION
'Ib prevent damage to bearing during heating process, bearing temperature must not exceed 250*E
- 5) IIEAT outer ball bearing to 200"F, and ENSURE temperature does not exceed 250*E
- 6) 1E using an induction bearing heater, O,
DE-MAGNETIZE outer ball bearing.
NOTE Each outboard bearing has a wide inner race and narrow outer race on one side and a narrow inner race and wide outer race on the opposite side. The bearings must be installed with the wide outer races face-to-face.
- 7) With wide outer race and narrow inner race facing inner bearing, INSTALL outer ball bearing onto shaft, and HOLD bearing firmly against inner bearing until bearing cools.
- 8) INSTALL bearing lockwasher (69).
- 9) INSTALL and TIGHTEN bearing locknut (22).
1.
INSTALL outboard bearing housing (33).
- m. INSTALL and TsGHTEN fasteners securing outboard bearing cover ('Q to outboard bearing housing (33).
Level of Use STOP THINK ACT-REVIE\\9 R"4 General 0 f37
,n 4.4.4 INSTALL inboatd-end components as follows; V
a.
Using an approved 0-ring lubricant, LUDRICNTE shaft sleeve 0-ring, b.
INSTALL shaft sleeve 0-ring into shaft sleyvc (14).
C AUTIO N lb prevent damage to the shaft sleeve 0-ring as the shaft sleeve 13 installed, the threaded portion of the shaft should be cover, c.
Using a bar of soap or plastic shim stock, COVER threaded area of shaft.
d.
Carrfidly INSTALL shaft sleeve onto shaft until shaft aleeve contacts impeller hub.
INSTALL, but do not tighten, shaft sleeve nut (20),
c.
n f.
INSTALL stuffing box bushing (63).
('
g.
With smaller c ts.de diameter facing impeller, INSTALL water deflectcs 40).
s h.
INSTALL bearing cover gasket (73).
i.
With bearing cover grease fitting facing upward, INSTALL bearing cover (35).
j.
INSTALL shaft collar (68).
k.
INSTALL ball bearing (16) as follows:
NOTE Outboard and inboard bearings are not interchangeable.
- 1) lE replacement bearing includes bearing shields, REMOVE bearing shields.
L/
Level of Use STOP THINK ACT REVIEW General
"' 4 21 of 37
t C A UTIO N
'Ib prevent damab'50'Ee to bearing during heating process, bearing temperature must not exceed
- 2) IIEAT ball bearing to 200'F, and ENSURE temperature does not exceed 250'E
- 3) E using an induction bearing heater, DE-MAGNETIZE ball bearing.
- 4) INSTALL ball bearing onto shaft, and llOLD bearing.
firmly against shaft collar (68) until bearing cools.
1.
INSTALL inboard bearing housing (31).
- m. INSTALL and TIGilTEN fasteners securing inboard bearing I
cover (35) to inboard bearing housing (31),
n.
INSTALL pump coupling key.
O.
C A UTIO N
'Ib prevent damage to coupling hub during installation:
Ileating temperature must not exceed 300*E lleat must be applied crenly to coupling hub.
NOTE Coupling hub installation may require the application of heat, o.
E necessary, HEAT coupling hub to 275'F, and ENSURE temperature does not exceed 300*E p,
INSTALL pump coupling hub.
4.4.5 POSITION case wear rings (7) onto rotating assembly.
4.4.6 E lower casing was removed, INSTALL lower casing as follows:
V Level of Use STOP THINK ACT REVIEW 4
General R "Jf 37 2
n a.
REMOVE covers from suction and discharge pipe openings.
V b.
INSTALL suction and discharge piping gaskets.
NOTE Pump lower casing weighs approximately 250 lbs.
j c.
1110 lower casing.
d.
Carefully LIFF lower casing and LOWEll onto baseplate, c.
INSTALLlower casing dowels, f.
INSTALL and TIOllTEN fasteners securing lower casing to baseplate.
(
g.
CONNECT suction and discharge piping.
STOP WARNING STOP Pipe insulation may contain asbestos. lb prevent injury to personnel, insulation containmg asbestos must be handled in accordance with WP 8003 (Att)," Control of Asbestas Containing Materials."
h.
INSTALL suction and discharge piping insulation.
4.4.7 INSTALL casing gasket as follows:
a.
With top surface of upper casing (1 A) facing downward, POSITION upper casing onto ground or work surface.
b.
POSITION 1/u-inch gasket material over upper casing mating surface, c.
CUT gasket materiallarger than size required,
- d. TAP out holes in gasket to allow for 26 lower casing stud bolts and two dov'ei pins.
6.1 Level of Use STOP THINK ACT REVIEW.
General
"*"Jf 37 4
3
CAUTION To,revent damage to gasket, casing mating surfaces must be free of dirt anc foreign material before installing gasket, c.
ENSURE gasket and upper casing mating surfaces are thoroughly cleaned.
f.
Sparingly APPLY approved gasket adhesive to lower casing mating surface, g.
POSITION gasket onto lower casing mating surface, h.
RIG upper casing, i.
LIFT upper casing as straight as possible.
J.
With holes in upper casing aligned with stud bolts in lower casing, LOWER upper casing onto lower casing.
(g-NOTE Tb ensare even pressure on gasket, at least six casing nuts should be installed symmetrically around casing. For best results, two casing nuts should be mstalled at each end of casing and two casing nuts should be installed in middle of casing.
k.
Using a diagonal sequence, INSTALL aiid TIGilTEN six casing nuts symmetrically around casing.
1.
ALLOW gasket adhesive to cure for at least four hours,
- m. W11EN at least four hours has elapsed, REMOVE six casing
- nuts, n.
RIG upper casing.
o.
LIFT upper casing as straight as possible, p.
LOWER upper casing onto cribbing.
4.4.8 INSTALL rotating assembly as follows:
V Level of Use STOP THINK ACT REVIEW "4
General 2Jfn
_m,___--____
p a.
RIO rotating assembly adjacent to inboard and outboard
(,
- bearings, b.
LOWER rotating assembly into lower casing, and ENSURE the following:
Rotating assembly is lowered as straight as porsible.
Case wear rings (7) fit into mating recess in lower casing.
All dowel pins engage.
4.4.9 POSITION inboard bearing cap onto inboard bearing housing.
4.4.10 INSTALL and TIG1ITEN fasteners securing inboard bearing cap to lower casing (l A).
4.4.11 POSITION outboard bearing cap onto outboard bearing housing.
4.4.12 INSTALL and TIG1ITEN fasteners securing outboard bearing cap to lower casing (1 A).
4.4.13 ADJUST shaft sleeve nuts (20) as necessary to center impeller in
,m
(
lower casing.
v 4.4.14 WIIEN impeller is centered in lower casing, TIGilTEN the following:
Inboard and outboard shaft sleeve nuts inboard and outboard shaft sleeve nut setscrews e
4.4.15 Using a dial indicator, MEASURE and dual VERIFY rotating assembly axial end play.
NOTE Rotating assembly axial end play must be between 0.010 and 0.015 inch.
4.4.16 IE rotating assembly end play is not between 0.010 and 0.015 inch, ADJUST thickness of bearing cover gasket (73) as necessary.
.'{
Qj Levelof Use STOP THINK ACT REVIEW General
[3;73,
- 4
4.4.17 RECORD the following onto Attachment 2:
O As-left axial end play value M&TE serial No.
Calibration duc date 4.4.18 INSTALL upper casing (IB) as follows:
a.
RIG upper casing, b.
LIFT upper casing as straight as possible, Y
CAUTION
'Ib prevent damage to gasket, case top half and gasket mating surfaces must be free of dirt and foreign material before installing upper casing.
c.
ENSURE gasket and upper casing mating surfaces are q
thoroughly clean, V
C A UTIO N
'Ib prevent damage to rotating assembly and case wear rings, upper casing must be lowered evenly and carefully onto lower casing.
d.
With holes in upper casing aligned with stud bolts in lower casing, carefully LOWER upper casing onto lower casing, c.
REMOVE rigging.
f.
ENSURE upper casing is properly seated, g.
REMOVE cyclets from upper casing, h.
INSTALL case dowels.
i.
INSTALL and, using a diagonal sequence, symmetrically and evenly TIGilTEN fasteners securing upper casing to lower casing.
.id 0'
Levelof USO STOP THINK '
ACT
' REVIEW General-
"*"' 4 g737
4.4.19 Using a strap wrench, ROTATE shaft by hand, and ENSURE O
shaft turns freely without binding.
4.4.20 E shaft does not turn freely without binding, REQUEST FLS to provide instructions for further maintenance.
Y C AUTION Y Tb ensure r per cooling,d in each stuffing box housing.the lantern rings must be c water seal i e tap locate 4.4.21 INSTALL inboard-end packing rings and lantern ring (63), and ENSURE lantern ring is properly aligned with water seal pipe tap.
4.4.22 INSTALL outboard-end packing rings and lantern ring (63), and ENSURE lantern ring is properly aligned with water seal pipe tap.
4.4.23 INSTALL inboard gland over shaft.
O 4.4.24 INSTALL and hand TIGilTEN fasteners securing inboard gland V
to stuffing box.
4.4.25 INSTALL outboard gland over shaft.
4.4.26 INSTALL and hand TIGIITEN fasteners securing outboard gland to stuffing box.
4.4.27 Using a strap wrench, ROTATE shaft by hand, and ENSURE shaft turns freely without binding.
4.4.28 E shaft does not turn freely without binding, REQUEST FLS to provide instructions for further maintenance.
4,4.29 POSITION inboard water deflector (40)_1 i
/32 nch away from inboard bearing cover, and TIGilTEN setscrew securing inboard water deflector to shaft.
4.4.30 POSITION outboard water deflector (40) 1/32 nch away from i
outboard bearing cover, and TIGilTEN setscrew securing outboard water deflector to shaft, p
4.4.31 ALIGN and COUPLE motor and driver as follows:
V Level of Use' STOP THINK
~ACT REVIEW General Rw;r37 4
9 a.
REQUEST FLS to specify coupling gap dimension.
b.
E driver was moved to gain access to pump components, MOVE driver, and INSTALL fasteners securing driver to driver foundation.
c.
Refer'Ib C MP 710A,"llorizontal Shaft Alignment," and ALIGN pump and driver to the following tolerances:
Coupling gap as specified by FLS Shaft gap as specified by FLS Angular (face-to-face) alignment no greater than 0.002 inch TIR Parallel (rim-to-rim) alignment no greater than 0.004 inch TIR NOTE On M7-7(PMP), the dicsci coupling must be set 0.002 to 0.004 inch low to accommodate thermal growth.
Diesel coupling 0.002 to 0.004 inch low d,
RECORD the following onto Attachment 2.
Measured alignment values M&TE serial number (s)
Calibration duc date(s)
NOTE On diesel-driven fire pump M7-7(PMP), the coupling is lubricated. On electric motor-driven fire pump M7-8(PMP) the coupling is dry.
c.
E pump local ID is M7-7(PMP), Refer 'Ib MP 791.0 (Att),
" Fire Protection (332)," and LUBRICATE coupling.
f.
COUPLE pump and driver.
Level of Use-sTop-
'THINK ACT REVIEW' "4
General 28 Jf 37
__._.-_.._m..__.
p 4.4.32 INSTALL the following as necessary:
'</
Priming and stuffing box piping Stuffing box drain piping Case drain piping Any interfering piping that was disconnected
+
4.4.33 INSTALL coupling guard, 4.4.34 Refer 1b MP 791.0 (Att)," Fire Protection (332)," and l
LUllRICATE pump.
4.4.35 NOTIFY Unit 1 Operations Department that pump maintenance is complete.
4.5 Operational Checkout e
4.5.1 WilEN system conditions permit, REQUEST Unit 1 Operations Department to perform the following:
p.
a.
FILL pump, (j
b.
VENT pump.
c.
RUN pump.
NOTE The manufacturer recommends a steady dripping of water through the gland.
4.5.2 REQUEST FLS to determine acceptable stuffing box leak rate.
4.5.3 ADJUST gland nuts to achieve acceptable stuffing box leak rate.
4.5.4 INSPECT all other joints and seals for leakage.
4.5.5 IE leakage is detected, REQUEST FLS to provide instructions for further maintenance, p
4.5.6 INSTALL shrouds covering inboard and outboard stuffing boxes.
]
Level of Use STOP THINK ACT REVIEW General f9g737
""' 4
,d 9
-g stop WARNING sTop Pump insulation may contain asbestos. *lb avoid injury to personnel, asbestos must be handled in accordance with WP 8003 (Att)," Control of Asbestos Containing Materials."
4.5.7 INSTALL pump insulation.
4.5.8 CONNECT insulation heat-trace wiring.
4.5.9 RECORD landed leads onto WC 10 (Att),
- Lifted Leads and Jumper Device Data Sheet."
r C
C Level of Use-STOP' THINK
'ACT' ' REVIEW Rev 4 General-39 ;,3,
p
- 5. IiEVIEW AND SIGN-OFF V
5.1 The review and sign-off of Attachment 2 and the AWO satisfy the review and sign-off of this procedure.
- 6. REFElENCES 6.1 Technical Specificationsfrechnical Requirements 6.1.1
'Ibchnicel Requirements hianual, OPS Form 273-7.2 i
6.2 NNECO Accident Prevention hianual 6.3 Drawings 6.3.1 NUSCo Drawing 25202-26019, Sheet 1," Fire Protection System Composite" 6.3.2 NUSCo Drawing 25202-26019, Sheet 2, " Piping and Instrumentation Diagram, Fire Protection System (Fire Pump ilouse and Yard)"
6.4 Vendor hianuals U
6.4.1 Peerless Pump Co. "llorizontal Single Stage Split-Case Pumps Wpc A" Brochtae No.11-1300 6.4.2 FhtC Corp.," Centrifugal Pumps," 25202-267-001 A 6.5 Administrative Procedures 6.5.1 CC 1," Control of Chemical Consumable Products" x
6.5.2 WP 8003," Unit 1 Work Package Planning" 6.5.3 WC 7," Fire Protection Program 6.5.4 WC 8," Control and Calibration of hicasuring and T:st liquipment" 6.5.5 WC 10," Jumper, Lifted Leads. and Bypass Control" 6.6 hiaintenance Procedures 6.6.1 C h1P 710A,"llorizontal Shaft Alignment" s
U Levelof Use STOP THINK ACT REVIEW Rn.4 Genera 1,37
6.6.2 MP 791.0," Plant Component Lulnication" l
(
~
- 7.
SUMMARY
OF CllANGES 7.1 This procedure was revised as a result of a Biennial Review.
7.2 incorporated interim change 1 which added PE hold points.
7.3 Incorporated interim change 2 which deleted PE hold points.
7.4 Incorporated interim change 3 which removed references to specific tubricants and added references to MP 791.0," Plant Component Lubrication."
7.5 Per Cl?M guidance, removed instruction for lubricating coupling through grease plugs following assembly. Added step to lubricate coupling prior to assembly of coupling hubs.
7.6 Added steps to record lifting and landing of electrical leads onto WC 10 (Att)," Lifted Leads and Jumper Device Data Sheet."
.m V
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Level of Use STOP THINK ACT REVIEW General
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Purnp Cross-Section View (Sheet 2 of 2)
ITEM DESCRIPTION ITEM DESCRIPTION IA LOWER CASING 31 INBOARD BEARING IIOUSING IB UPPER CASING 32 IMPELLER KEY 2
IMPELLER 33 OUTBOARD BEARING IIOUSING 6
SIIAFT 35 BEARING COVER 7
CASEWEAR RING 40 WATER DEFLECTOR 8
IMPELLER WEAR RING 41 BEARING CAP 13 PACKING RING 46 COUPLING IICB KEY I4 SIIAFT SLEEVE 63 STUFTING BOX BUSIIING 16 INBOARD BALL BEARING 65 SIIAFT COLIAR 17 GLAND 69 BEARING LOCIGVASIIER 17B GIAND BOLT 73 BEARING COVER GASKET IS OUTBOARD BALL BEARING 127 STUETING BOX PIPING 20 SIIAFT SLEEVE NLT 22 BEARING LOCKNUT 29 IANTERN RING MP 726.1 Level of Use STCP THINK ACT REVIEW General 34cr37
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O Atta__.;nt 2 U
Inspectior Data Record 4
(Sheet 1 of 3) l AWO NO.
LOCALID STEP NO.
INSPECTION ACCEPTANCE' INSPEC110N PERFORMED VERIFIED CRITERIA RESULTS BY/ DATE BY/ DATE l
4.1.7 As-Found Coupling Gap As Specified by FLS l
l As-Found Shaft Gap i 4.2.6 Shaft Runout:
Outboard Bearing Less Than 0.003" TIR TIR Outboard Shaft SI eve TIR Impeller TIR Inboard Shaft Sleeve TIR Inboard Bearing TIR CouplingIlub TIR M&TE Serial No.
Cal. Duc Date 3
4 i
l MP 726.1 Level of Use -
Rev.4 i
General sToe Twinx
'Acr aeview 35of37 l
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U Attat__:r.t 2 Inspection Data Record l
(Sheet 2 of 3) '
STEP NO.
INSPECrlON ACCEPTANCE INSPECHON PERFORMED 4ERIFIED CRITERIA RESULTS BY/ DATE BY/ DATE 4.2.9 Outboard Impeller-to-Case 0.018 to 0.025"
=
CLR ID
- OD
=
or Wear Ring CIcarance (New) 43.1.c.
0.018 to 0.040"
=
Inboard Impeller-to-Case (In-Service)
ID
- OD CLR
=
Wear Ring Clearance i
M&TE Serial No.
Cal. Duc Date M&TE Serial No.
Cal. Due Date 4.4.15 As-Left Axial End Play
' O.010 to 0.015" t
M&TE Ser. No.
Cal. Due Date M&TE Serial No.
Cal. Due Date l
MP 726.1 Level of Use REVIEW g
,4 STOP THINK '
ACT eneral
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