ML20148G800
| ML20148G800 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/30/1997 |
| From: | Pernal J NORTHEAST NUCLEAR ENERGY CO. |
| To: | |
| Shared Package | |
| ML20148F977 | List: |
| References | |
| MP-725.1, NUDOCS 9706060157 | |
| Download: ML20148G800 (20) | |
Text
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l l, MILLSTONE NUCLEAR POWER STATION
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MAINTENANCE PROCEDURE 1
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Fuel Forwarding Pumps (Deming Vertical Turbine Pump, Figure 4700G) 1 i
MP 725.1 i
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l Approval:
l l PORC Mtg. No: 1 47-D85 Date: 62247 l
Effective Date: 5 - M - R~l
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- Level of Use SME
- J. Pernal General 9706060157 970530 i
.- - _ _ . -- -. . -_ . . - - - . --. .- ~
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l es Millstone Unit 1 I Maintenance Procedure
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Fuel Forwarding Pumps (Deming Vertical'nirbine Pump, Figure 4700G) l i
l TABLE OF CONTENTS
- 1. PURPOSE....................................................2
- 2. P REREQ U I SITES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
- 3. P R ECAUTI O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
- 4. I N STR U CTI O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
- 4.1 M o t o r Re m oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1
4.2 P u m p Re m oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3 Pump Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 l 4.4 Pump Cleanir,g, Inspection, and Repair . . . . . . . . . . . . . . . . . . . . . 10 l 4.5 Pu mp Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 l l 4.6 Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
,n 4.7 M otor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 U 5. REVI EW AND SI GN- OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
- 6. R E FE R EN C ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
- 7. SU M M ARY OF CHANG ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 l ATTACHMENTS AND FORMS l
l Attachment 1," Pump Cross-Section View" ........ .............. 19 i l
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1 MP 725.1 Level of Use STOP THINK ACT REVIEW Rev.6 General 1of19 1
y 1. PURPOSE i
1.1 Objective The objective of this procedure is to provide instructions for overhauling Deming vertical turbine pumps (Figure 4700G).
1.2 Discussion This procedure is written to provide guidance for performing maintenance on Deming vertical turbine pumps (Figure 4700G). The instructions detail motor removal; pump removal, disassembly, inspection, assembly, and installation; and motor installation.
1.3 App!!cability This procedure applies to the following local ids:
- M8-47A(PMP), "1 A Diesel Fuel Oil Storage Tank Transfer Pump-Pump" M8-47B(PMP),"1B Diesel Fuel Oil Storage Tank Transfer Pump-Pump" O
- M8-85A(PMP) "1 A G/T Fuel Storage Tank (North) Transfer Pump-Pump" M8-85B(PMP) "1B G/T Fuel Storage Tank (South) Transfer Pump-Pump"
- M8-88A(PMP),"#1 House Heating Fuel Oil Tk. Forwarding Pump-Pump" l
- M8-88B(PMP), "#2 House Heating Fuel Oil Tk. Fonvarding l Pump-Pump" l
- 2. PREREOUISITES l
2.1 General 2.1.1 N/A 2.2 Documents 2.2.1 WC 10 (Att)," Lifted Lead and Jumper Device Data Sheet" p
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MP 725.1 Level of Use ST P THINK ACT REVIEW Rev.6 Genew 2 of 19
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- . i 2.2.2 MP 732.1,"GT Fuel Forwarding Pump Right Angle Drive" !
2.3 Measuring and Test Equipment (M&TE) !
2.3.1 All M&TE has been calibrated in accordance with WC 8, !
" Control'and Calibration of Measuring and Test Equipment" and !
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the calibration is current. l 2.3.2 . Dial indicator,0-1 inch, accuracy ofi 0.0005 inch, such as !
-QA-1502, QA-1503, or QA-1505 j
i 2.3.3 Outside micrometer,0 - 1 inch, accuracy of 0.0005 inch such as MPS-85
. 2.3.4 Vernier calipers,0 - 12 inch range, accuracy ofi0.0005 inch, such as MPS-70.
2.4 Tools and Consumables l 2.4.1 Equipment !
i Chertypicker (Grove crane) j
- ' Crane or chain hoist to provide minimum 12-foot clearance over pumli mountm, g plate f
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- O MP 725.1 Level of Use
, 'STOP THINK .ACT .. REVIEW Rev. 6 General 3 of 19
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l xs 2.4.2 Tools i
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Mechanic's standard tool kit 13 /8-inch wrench
- Channel locks Strap wrench
- V-blocks
- Pipe stands
- Lifting clamps,50 lbs. minimum Nylon slings Swivel eyes Snap gage 2.43 Special Tools
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- Deming bearing housing wrench l
- Shaft positioning tool l
- Slide hammer 2.4.4 Spare Parts
- General purpose oil proof gasket material,1/32t o 1/8 inch l thickness l
- Packmg j
- Bearings J
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MP 725.1 Level of Use STOP THINK ACT REVIEW Rev.6 General 4 of 19
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- 2.4.5 Consumables Approved cleaning solvent such as Polywater Hydrafoam 2020 Approved thread locking compound such as Loctite threadlocker 242
- 3. PRECAUTIONS 3.1 Flammable liquids are pumped by these components. Use care when breaching system boundaries and contain all fuel oil.
3.2 Match mark components prior to disassembly as necessaiy to aid in reassembly. Do not match mark delicate parts or critical mating surfaces.
3.3 Ensure all chemical consumables to be used in or on power plant components are controlled in accordance with CC 1," Control of Chemical i Consumable Products." j l
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MP 725.1 Level of Use STOP THINK ACT REVIEW Rev.6 Genera 5 of 19
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- 4. INSTRUCTIONS i V 4.1 Motor Removal l
4.1.1 IE the pump has a single-motor arrangement, PROCEED as ,
l follows: l i
- a. IE installed, REMOVE motor canopy.
! b. MARK motor electricalleads. ,
- c. DISCONNECT clectrical leads from pump motor.
, d. RECORD lifted leads onto WC 10(Att)," Lifted Lead and Jumper Device Data Sheet."
l e. REMOVE lock screw holding impeller adjusting nut to top i drive coupling.
l l f. REMOVE gib key and adjusting nut. j l g. RIG motor to cherrypicker.
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- h. UNBOLT and REMOVE motor. !
l NOTE To eliminate excessive vibration some transfer pump shafts have a balance
! ring installed.
- i. IE applicable, MATCII MARK balance ring to pump shaft and REMOVE balance ring.
l j. MOVE motor to suitable work area.
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MP 725.1 i Level of Use . .
ST P THINK ACT REVIEW Rev.6 i
Gened 6 of 19 l
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G' NOTE Gas turbine fuel transfer pumps M8-85A and 85B have a double-motor arrangement.
4.1.2 E the pump has a double-motor arrangement, Refer To MP 732.1,"GT Fuel Forwarding Pump Right Angle Drive," and REMOVE the following:
- Vertical motor enclosure Vertical motor (ac)
Horizontal motor (de) l
- Magnetic clutch Johnson right angle gear drive l 4.2 Pump Removal i 4.2.1 PERFORM applicable action: l l O l
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- E local ID is not M8-85A, MATCH MARK pump and '
l mounting flange.
E local ID is M8-85A, MATCH MARK mounting flange and tank nozzle.
4.2.2 E required, MATCH MARK shim to mounting flange.
4.2.3 RIG pump discharge head to cherrypicker.
4.2.4 UNBOLT and REMOVE discharge piping from pump.
4.2.5 REMOVE discharge piping casket. ]
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MP 725.1 i Level of Use l General sw - e newsw Rew 6 l 7 of 19
C AUTIO N On M8-85A the discharge head flange mounting bolts are not tack welded to the mounting flange. The discharge head flange must not be unbolted from the mounting flange; the bolts will fall into the tank.
4.2.6 PERFORM applicable action:
IE local ID is M8-85A, UNBOLT mounting flange from tank nozzle.
IE local ID is not M8-85A, UNBOLT pump from mounting flange.
4.2.7 RAISE pump until bowl assembly is even with top tank nozzle l and ALLOW pump to drain.
l 4.2.8 RAISE pump until bowl assembly clears mounting flange or tank nozzle.
4.2.9 IE installed, REMOVE shim.
4.2.10 REMOVE gaskets. l 1
1 4.2.11 COVER opening as necessary to prevent entry of foreign material.
4.2.12 MOVE pump to suitable work area and SET pump horizontally on blocks or pipe stands.
4.3 Pump Disassembly NOTE l Column pipe threads are right hand; shaft threads are left hand.
! 4 4.3.1 UNSCREW head shaft from head shaft coupling. i
- 4.3.2 UNSCREW and REMOVE head shaft coupling from stuffing box !
4 shaft.
i MP 725.1 Level of Use ST P THINK ACT REVIEW Rev. 6 Genemi 8 of 19 i
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n 4.3.3 DISCONNECT packing lube oil hue.
4.3.4 UNBOLT and REMOVE stuffing box gland.
4.3.5 REMOVE and DISPOSE of accessible packing. ;
I l 4.3.6 REMOVE latern rings. I 4.3.7 REMOVE stuffing box.
4.3.8 REMOVE and DISPOSE of any remaining packing.
4.3.9 UNSCREW and REMOVE head and baseplate assembly from top column flange.
l 4.3.10 UNSCREW and REMOVE top column pipe at column coupling from top intermediate column.
4.3.11 UNSCREW and REMOVE stuffing box shaft from coupling with top intermediate shaft.
4.3.12 REMOVE shaft coupling from intermediate shaft.
.I 4.3.13 REMOVE shaft bearing housing and bearing from intermediate C' column.
4.3.14 UNSCREW and REMOVE intermediate shaft from shaft coupling with bottom shaft.
4.3.15 REMOVE shaft coupling from bottom shaft.
4.3.16 UNSCREW and REMOVE intermediate column at column coupling from bottom column.
4.3.17 REMOVE shaft bearing housing and bearing from bottom column.
4.3.18 DISASSEMBLE bottom column from top bowl assembly as follows:
- a. UNSCREW and REMOVE column adapter.
- b. DISCONNECT bottom shaft at impeller shaft coupling.
j c. REMOVE shaft coupling from impeller shaft.
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l MP 725.1 j Level of Use . .
ST P THINK ACT REVIEW Rev.6 Genew 9 of 19 j
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- d. UNSCREW and REMOVE top bowl.
> e. REMOVE top bowl bearing.
- f. REMOVE top bowl impeller nut. j i
- g. Using slide hammer, REMOVE top bowl impeller and l split-tapered sleeve.
4.3.19 DISASSEMBLE each intermediate bowl assembly as follows:
- a. UNSCREW and REMOVE intermediate bowl.
- b. REMOVE intermediate bowl bearing.
- c. REMOVE intermediate bowl impeller nut.
- d. Using slide hammer, REMOVE impeller and split-tapered sleeve from intermediate bowl.
4.3.20 UNSCREW and REMOVE last intermediate bowl from suction bowl.
4.3.21 UNSCREW and REMOVE suction bowl bearing.
4.4 Pump Cleaning, Inspection, and Repair NOTE Structural damage and defects include breakage, cracks, deformation, distortion, corrosion, pitting, scoring, scratches, erosion, galling, and indications of misalignment.
4.4.1 INSPECT all components for wear, structural defects, and damage.
4.4.2 1E inspection restdts are not satisfactory, REPAIR or REPLACE applicable' component (s).
l MP 725.1 Level of Use . . .
ST P THINK AT REVIEW Rev. 6 Gemi 10 of 19 l
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i 4.4.3 Using V-blocks and dial indicator, INSPECT each shaft for
( straightness at the following locations:
- Impeller ;
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- Bearing l
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- Packing ;
1 l l 4.4.4 1E total indicated runout (TIR) is greater than 0.002 inch, !
REPAIR or REPLACE shaft. l l 2 4.4.5 RECORD as-left TIR values onto AWO. l j NOTE i Under normal circumstances, all bearings will be replaced when a pump overhaul is performed.
4.4.6 MEASURE bearing clearances at each bearmg. !
. 4.4.7 IE bearing clearance is greater than 0.020 inch for bronze l bearings OR 0.014 inch for graphite bearings, REPLACE ;
bearings.
4.4.8 MACHINE new bearing to provide a clearance of 0.007 to 0.010 inch for bronze bearings or 0.005 to 0.007 inch for graphite bearings.
4.4.9 RECORD as-left bearing clearances onto AWO. l 4.5 Pump Assembly I NOTE I All gaskets and packing shall be replaced with gaskets fabricated from new material.
i 4.5.1 ASSEMBLE suction bowl as follows:
- a. INSTALL shaft positioning tool on impeller shaft.
O MP 725.1 Level of Use - .
ST P TH NK ACT REVIEW Rev. 6 Gened 11 of 19
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., b. SLIDE suction bowl and bearing on impeller shaft.
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- c. INSTALL bottom intermediate bowl impeller on impeller shaft.
- d. INSTALL bottom intermediate bowl impeller sleeve and nuts.
- e. TIGIITEN impeller sleeve and nut.
- f. INSTALL bottom intermediate bowl and bearing.
- g. SCREW bottom intermediate bowl to suction bowl. j 4.5.2 ASSEMBLE cach intermediate bowl assembly as follows: )
- a. INSTALL next intermediate bowl impeller on impeller shaft.
- b. INSTALL intermediate bowl impeller sleeve and nuts.
- c. TIGIITEN impeller sleeve and nuts.
- d. INSTALL next intermediate bowl and bearing.
'd c. SCREW this intermediate bowl to intermediate bowl (s) and suction bowl assembly.
- f. ROTATE shaft and ENSURE free movement.
4.5.3 After top bowl is installed, INSTALL column adapter over impeller shaft and SCREW to top bowl assembly.
4.5.4 CONNECT bottom shaft to impeller shaft with shaft coupling.
4.5.5 INSTALL bottom column to column adapter.
4.5.6 REMOVE shaft positioning tool from impeller shaft.
4.5.7 PLACE column bearing assembly over bottom shaft.
4.5.8 SCREW column bearing assembly into column coupling until bearing assembly butts solidly against column coupling.
4.5.9 CONNECT intermediate shaft to bottom shaft with shaft coupling.
C MP 725.1 Level of Use gg STOP THINK ACT REVIEW Rev.6 12 of 19
. I g 4.5.10 SCREW column coupling onto bottom column.
lV 4.5.11 SCREW intermediate column into column adapter on bottom column.
4.5.12 SCREW column bearing assembly into column coupling between l intermediate and bottom coupling until bearing assembly butts l solidly against coupling.
4.5.13 CONNECT stuffing box shaft to intermediate shaft with shaft coupling.
l 4.5.14 SCREW column coupling onto intermediate column.
4.5.15 SCREW top column into column adapter on intermediate column.
4.5.16 INSTALL top column flange or top column flange with baseplate and discharge head.
, 4.5.17 IE pump baseplate was removed, PLACE new gasket on top
- column flange and carefully INSTALL discharge head with ,
, baseplate onto flange. l 1a 4.5.18 INSTALL and TIGHTEN discharge head bolting. !
l 4.5.19 INSTALL and BOLT stuffing box into discharge head.
r NOTE ;
Packing rings and lantern rings must be installed in the following order:
one packing ring, one lantern ring, three packing rings, one lantern ring, ,
t and three packmg rings. Because of packing ring thickness variations, the mechanic is ,ermitted to alter the packing stackup; however, the final packing stac cup must ensure that the lantern rings are aligned with the stuffing box grease ports.
. 4.5.20 PACK pump and ENSURE lantern rings are aligned with grease
! ports.
s.
1 4.5.21 RECORD as-left packing stackup onto AWO.
4.5.22 CONNECT head shaft to stuffing box shaft with shaft coupling.
3 4.5.23 CONNECT packing lube oilline. !
MP 725.1 Level of Use .
ST P THINK ACT REVIEW Rev.6 General 13 of 19 y . .
4.6 Pump Installation 4.6.1 MOVE assembled pump to field installation location.
4.6.2 A'ITACH rigging to pump discharge head and cherrypicker.
4.6.3 REMOVE temporary cover from tank nozzle or mounting flange. ,
l 4.6.4 INSTALL new gasket.
l 4.6.5 IE applicable, ALIGN shim and mounting flange match marks ,
and INSTALL shim and gaskets. l 4.6.6 Using head section, RAISE pump and POSITION over tank nozzle.
4.6.7 ALIGN match marks and LOWER pump into tank.
4.6.8 BOLT pump to mounting flange or tank nozzle as applicable.
4.6.9 INSTALL discharge piping gasket.
4.6.10 BOLT discharge piping to pump. l 4.7 Motor Installation 4.7.1 IE pump has a single-motor arrangement, PERFORM the I following: )
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- a. MOVE motor to field installation location. l
- b. RIG motor to cherrypicker.
NOTE l
, To eliminate excessive vibration some transfer pump shafts require a balance ring.
- c. IE applicable, ALIGN balance ring and shaft match marks, and INSTALL balance ring over pump shaft.
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MP 725.1 Level of Use sroe Tsisx Acr neview Rev. 6 General 14 of 19
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\[ C A U TI O N Care must be taken when lowering motor over shaft so as not to bend shaft. ,
l d. LOWER motor over shaft.
- e. SET motor on pump head and BOLT into place. 4 L i
- f. IE applicable, using approved thread locking compound INSTALL and TIGHTEN balance ring setscrews.
- g. CONNECT clectricalleads to motor. I
in NOTE ;
p Correct rotation is counterclockwise (CCW) when looking down at motor. i y i
- i. BUMP motor and ENSURE proper rotation.
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MP 725.1 Level of Use -
STOP THINK ACT . REVIEW Rev.6 General 15 of 19 y y.s-m -.- ~ - cw
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I NOTE G ,
Gas turbine fuel transfer pumps M8-85A and B have a double-motor l arrangement.
4.7.2 IE pump has a double-motor arrangement, Refer To MP 732.1, !
"GT Fuel Fonvarding Pump Right Angle Drive," and INSTALL ,
the following:
- Johnson right angle gear drive !
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- Magnetic clutch l
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Ilorizontal motor (de) i Vertical motor (ac) l
- Vertical motor enclosure
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4.7.3 ADJUST impellers as follows:
- a. INSERT gib key and adjusting nut.
- b. SCREW adjusting nut onto head shaft and TIGIITEN until impellers are just free and shaft can be turned by hand.
- c. TURN adjusting nut one more flat.
- d. CONTINUE turning adjusting nut until drilled holes in )
adjusting nut align with tapped holes in top drive coupling.
- c. INSTALL and TIGIITEN lock screws.
4.7.4 IE removed, INSTALL motor canopy. l I
t MP 725.1 Level of Use gg STOP THINK ACT ' REVIEW Rev. 6 16 of 19
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O 5. REVIEW AND SIGN-OFF t -
5.1 The review and sign-off of the AWO satisfies the review and sign-off of this procedure. !
- 6. REFERENCES j 6.1 NNECo Accident Prevention Manual Rev. 5 l 6.2 Drawings I
l 6.2.1 NUSCo Drawing No. 25202-29002, Sheet 536, " Millstone i Nuclear Power Station Unit #1 Fuel Fonvarding Pump M8-85A
- Mounting Detail to Gas 'Ibrbine Fuel Oil Storage Tank "A" I l M8-39A" l
6.3 Vendor Manuals 6.3.1 25202-170-004A, Crane Deming," Vertical 11rbine Pumps" 6.4 Administrative Procedures 6.4.1 CC 1, " Control of Chemical Consumable Products" V 6.4.2 WC 8," Control and Calibration of Measuring and Test Equipment" 6.4.3 WC 10," Jumper, Lifted Lead, and Bypass Control" 6.5 Maintenance Procedures 6.5.1 MP 732.1,"GT Fuel Forwarding Pump Right Angle Drive" l 6.6 Other Documents 6.6.1 Maintenance Department Main Purchase Order (MPO) File # l 117533 l l
6.6.2 Fax dated 9/11/96 from Vera Morrison of Crane Deming Pumps i to Patrick O'Neill of Northeast Utilities l 6.6.3 Memo dated 9/11/96 from Patrick O'Neill of Northeast Utilities to Mark Heinonen of Northeast Utilities regarding snap rings for fuel forwarding pumps l
lO MP 725.1 Level of Use . -- .
ST P THINK AT REVIEW Rev.6 General 17 of 19
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! 6.6.4 Fax dated 5/13/97 from Vera Morrison of Crane Deming Pumps l
l to Patrick O'Neill verified that the bearing housing snap ring and i cover plate was not part of the original configuration. t 6.6.5 PDCR 1-224-91, installation of balance ring on " Diesel Fuel Oil Tank Transfer Pumps" i 1
- 7.
SUMMARY
OF CHANGES !
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7.1. Updated references as a result of Biennial Review. .
7.2 Revision 5 incorporate interim changes 1 and 2 as follows: !
t Change 1 eliminated the requirement to install snap ring and I cover plate since this component was not installed in the original I configuration of pump. :
a Change 2 allowed elimination of one packing ring in stuffing box !'
and added step to record the as-left packing stackup on the AWO. i 7.3 Incorporated PDCR 1-224-91 to install balan, < iing on M8-47A and ;
l M8-47B, $' Diesel Fuel Oil Tank Transfer Pumps."
{
- 'V O 7.4 Incorporated DCN DM1--S-549-95 to remove requirement to tack weld ;
bolts to the mounting flange of M8-85A " Gas'Ibrbine Fuel Oil Tank l Transfer Pump."
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1-MP 725.1 Level of Use STOP THINK . ACT ' REVIEW Rev. 6 General 18 of 19
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Attachment 1 l Pump Cross-Section View (Sheet 1 of 1)
%J t Parts List 3
4 s, 2 g 1 Adjusting nut lockscrew
! )
N .. -
2 Canopy 3 Impeller adjusting nut 4 i 4 Gib key
=
- __ i 12 IIcad shaft coupling
! d
'i 13 Discharge head i
... 14 Stuffingboxrelief assembly V l :
15 Grease cup 40 16 Stuffing box gland y; y
.- 17 Lantern rmgs 9 "
i 41 18 Stuffing box packing !
]w '
w uI 4^,
19 20 Stuffing box Stuffing box bushing y -
!l -
/ 21 Snapring and cover plate (Not
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16 y - 43 Used) l ,
22 Bearing housing 17 ----# # ' -
v,
- v. 44 23 Column bearing - cutless rubber l
18 . -
19 ' ,' y(- T $ 5 pel rshaftcoupling
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.. D 26 Column adapter 21 s.s '~ - . ~..,.
w ~ -47 48 27 Discharge or topintermediate
.2 .
bowl
. , ~ , ,
gL ,' ' ~~ s 4l ,1 49 28 Discharge or intermediate bowl
- - 50 bearing g
L~ X i 24 29 Snapring and cover plate 25 - - - - .
51 30 Bowl bearing i
fj '%
'= -
52 31 32 Intermediate bowl Impeller nut
.s
.8 53 33 Impeller 29
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N 34 Impeller sleeve N
s 30 s ~y 35 Bowl gasket 3'
N ~- t 36 Suction bowl 32 ~ "
37 Suction bowlbearing i
33
'p,, : TMCA' 38 Suction pipe 39 Strainer 34 / ;
40 llead shaft Prelubricating valve 41 35 1 42 Discharge flange
~g ,_,._ - - ! 43 Prelubricating pipe
-- , 44 Stuffing box shaft 37 [- l 45 Top column flange gasket 46 Top column flange 47 Shaft coupling 38 l 48 Top column pipe i
49 Intermediate shaft {
39 50 Column coupling 51 Intermediate column 52 Bottom shaft 53 Bottom column 54 Impeller shaft C'\
V MP 725.1 Level of Use STOP THINK ACT REVIEW Rev. 6 General 19 of 19