ML19344A907
| ML19344A907 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 07/21/1978 |
| From: | Librizzi F Public Service Enterprise Group |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-36, REF-GTECI-SF, TASK-A-36, TASK-OR NUDOCS 8008220580 | |
| Download: ML19344A907 (59) | |
Text
O PSIEG Pubhc Service Electric and Gas Company 80 Park Place Newark. N J. 07101 Phone 201/430-7000 July 21, 1978 THIS DOCUMENT CONTAINS POOR QUAUTY PAGES Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Attention:
Mr. Victor Stello, Jr., Director Division of Operating Reactors Gentlemen:
CONTROL OF HEAVY LOADS NEAR SPENT FUEL NO. 1 UNIT SALEM NUCLEAR GENERATING STATION DOCKET No. 50-272 PSE&G hereby transmits its response to your request for information concerning control of heavy loads near spent fuel, dated May 17, 1978.
Should you have any further questions in this regard, please do not hesitate to contact us.
Very truly yours,
-(
F.
P. Librizzi./ /
General Manager -
Electric Production 06<?2zcgg6 4Il 39 s21^01\\$
\\
The Energy People
,,6([
s1 M-34:
QUESTION 1 Provide a diagram which illustrates the physical relation between reactor core, the fuel transfer canal, the spent fuel storage pool, and the set down, receiving or storage areas for any heavy loads moved on the refueling floor.
ANSWER This information has been provided in FSAR Figures 1. 2-2, 1.2-3, 1.2-4 and 9.7-2.
P78 61 50
CUESTION 2 Provide a list of all objects that are required to be moved over the reactor core (during refueling), or the spent fuel storage pool.
For each object listed, provide its approximate weight and size, a diagram of the movement path utilized (including carrying height) and the frequency of movement.
ANSWER No loads heavier than the equivalent weight of the spent fuel assembly are moved over the spent fuel pool during refueling.
Objects that are required to be moved over the reactor core during refueling are described in the FSAR in response to Question 9.58.
P78 61 51 Y
' QUESTION 3 What are the dimensions and weights of the spent fuel casks that are or.will be used at your facility?
ANSWER The actual dimensions and weight of the cask to be used at Salem is currently unknown.
The largest cask that can be used is approximately 88" in diameter, 204.5" long and weighs approx-imately 200,000 lbs. when loaded.
l 1
P78 61 49
QUESTION 4 Identify any heavy load or cask drop analyses performed to date for your facility.
Provide a copy of all such analyses not previously submitted to the NRC Staff.
ANSWER The physical arrangement of the Fuel Handling Building is such that the transfer pool is separated from the spent fuel pool.
The cask can travel only over the transfer po o l.
For this reason, no cask drop analysis was required, no r wa s any pe r f o rmed.
P78 61 46 Me.
puESTION 5 Identify any heavy loads that are carried over equipment required for the safe shutdown of a plant that is operating at the time the load is moved.
Identify what equipment could be affected in the event of a heavy load handling accident (pi ping, cabling, pumps, etc.) and discuss the feasibility of such an accident affecting this equipment.
Describe the basis for your conclusions.
ANSWER No heavy loads are handled over eqt'.ipment required fo r the safe shutdown of the plant during the riovement of fuel from the reactor cavity to the spent fuel pool or vice vere a, or the move-ment of a cask.
The handling of fuel is all within the reactor cavity, fuel transfer canal and spent fuel po o l.
The cask is moved only within certain areas of the fuel handling building.
No equipment required for safe shatdown is located in any of these areas.
P78 61 31 v
QUESTION 6 fuel If heavy loads are required to be carried over the spent at your facility, discuss storage pool or fuel transfer canal the feasibility of a handling accident which could result in water leakage severe enough to uncover the spent fuel.
Describe the basis for your conclusions.
ANSWER A heavy load handling accident could not result in water leakage severe enough to uncover the spent fuel.
The maximum load car-ried over the spent fuel pool is that of a fuel assembly.
With the proposed increased capacity spent fuel rack modification installed, it is not possible to drop a fuel assembly on the spent fuel pool liner plate.
Other fuel handling accident con-siderations have been addressed in our February 14, 1978 submit-tal concerning the proposed spent fuel rack modification.
A spent fuel shipping cask drop could perforate the fuel trans-fer pool liner plate.
However, such in event would not result in loss of water from the storage pool, since the two are physical-ly separated as shown in FSAR Figure 9.7-2.
P78 61 21 e
' QUESTION 7 Describe any design features of your facility which af fect the potential for a heavy load handling accident involving spent fuel, e.g.,
utilization of a single failure-proof crane.
ANSWER The design of the Fuel Handling Building is such that it is physically impossible fo r a load greater than 5 tons to be carried over the spent fuel pool.
This is a result of both the physical arrangement of the Fuel Handling Building and load limits on the fuel handling crane.
Administrative con-trols prohibit loads greater than that of a fuel assembly to travel over the spent fuel pool.
The maximum height at which fuel assembly can be carried is restricted by limit switches a
on the crane to 15 inches over the top of che spent fuel racks.
The spent fuel racks have been designed to absorb the energy released by a fuel assembly dropping from 15 inches above them.
P78 63 22
'QUESTXON 8 Provide copies of all procedures currently in effect at your facility for the movement of heavy loads over the reactor core during refueling, the spent fuel storage pool, or equipment required for the sa f e shutdown of a plant ther is operating at the time the move occurs.
ANSWER The Station Maintenance Department Procedure M8C entitled
" Reactor Vessel Head and Internals Removal and Installation" is attached.
P78 63.23 f
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' QUESTION 9 Discuss the degree to which your facility complies with the eight.(8) regulatory positions delineated in Regulatory Guide 1.13 (Revision 1, December, 1975) regarding Spent Fuel Storage t
Facility Design Basis.
AhSWER The Spent Fuel Storage Facility design conforms with the Regulatory Guide as described in the FSAR in response to Questions 9.10, 9.22 and 9.48, with the exception that the high radiation level instrumentation does not actuate the filtration system.
P78'63 24
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RI.V. OVA 1. AC INETA* I.ATION 1.0 PUPPCSE 1.1 The purpose of this procedure is to give the basic steps required to prepare the reactor vessel, reactor vessel internals and the refueling cavity for the fuel assembly and RCC element replacement.
2.0 PRICAUTIONS 2.1 The radiation exposures shall be held as low as practicable during the refueling operation.
2.2 Hand tools used within the proximity of the open reactor must be fastened with a line to prevent their being lost inside the reactor vessel.
2.3 All personnel should be careful to avoid exposure to the underside of the reactor closure head.
2.4 The following items are not t.o be used when working on components of the primary system:
1.
Carbon steel wire brushes 2.
Chlorinated solvents, e.g. trichlorethylene.
l 3.
Unapproved masking tape (other than use on protective clothing) 3.0 PREREQUISITES 3.1 The Reactor Coolant System has been brought to 1
refueling shutdown conditions in accordance with Plant Operating Instruction.I-3.9 and Refueling i
Instruction I-2.7.2.
m T
fixturer and eceiprent felle.ing tccis, 3.2 Tnc have been checked fc: p:Opc: operatien in accordance ith instructions contained in Volune II, Chapter 9, ar.d ready f or use:
Plant Iter Kunber Ecuipment_
THSC:C Manipulater Crane a.
b.
Pclar Crane FHSTFT Fuel Transfer System FHSTCT c.
d.
Drive Shaft Unlatching Tool FHSTIR Internals Lifting Rig FHSTIS e.
Irradiation Sample Handling Tool FHSTHE f.
Vessel Head Lifting Device FHSTSC g.
h.
Spring scale FH22LC i.
Load Cell FHMILO j.
Load Cell Adapter Part Length Drive Shaf t Unlatching Tool FHSTPT k.
RCMIST I
1.
Stui Tensioners and Washer Carriers Stud Nut n.
Spent Fuel Pit Sridge FHSTFT n.
Spent Fuel Assenbly Handling Tool FHSTCF o.
RCC Change Fixture FHSTGT p.
Guide Tube Cover Handling Tool FHSTTP q.
Thimble Flug Handling Tool r.
Retainers Part Length Drive Shaf t FlD2SP s.
Stud Hole Plugs FHMEPF t.
Stud Hole Plug Handling Fixture FHSTIR u.
Reactor Vessel Flange Protector FHSTPH v.
Burnable Poison Rod Handling Tool v.
9 J
l l
Rev. 0 uan
3.3 Special Precautiens a.
Care should be exercised when taking measure-ments for the elengction readings for studs te elimincte time censuring corrections.
b.
No hamrer blows shall be e= ployed on the vessel or closure head.
For bolt-up procedures prior to nuclear oper-c.
ation, a vessel temperature of 70*F must be obtained before the closure studs are pre-stressed and the vessel is partially pressurized only (partial pressurization not to exceed 600 psig).
This minitun temperature must be main-tained until after the closure head is unbolted.
A vessel tenperature of 99'T minimur must be main-tained before increased pressurization of the vessel above 600 psig.
For future pressurization
(
after nuclear operatien of the vessel, a temper-ature correction must be made for changes in the NDT of pressure containing parts.
d.
If partial bolt-up and partial pressurization are required, the vessel, closure head, and closure studs must be maintained at a minimur temperature of 70'F before even a partial bcit-up may be begun.
A partial bolt-up, which results in an average stud elongation not exceeding 0.013 +.002 inches, may be accomplished pro-
.001 vided the 70*F minimum temperature of the vessel, closure head and closure studs is maintained.
This stud preload is adequate to properly seat the closure head for an internal pressure not exceeding 600 psi.
No pressure 2
i..,
may be a,:, lied to the vessel unless the temper-(
and such pressure shall not at ure is 70
- F,
exceed 600 psi unless the temperature is 99'T For partial bcit-up see Table V.
or above.
Af ter partial bolt-cp has been achieved and the temperature has been raised to a minimum operational bolt-up may be accomplished of 99'F, in accordance with Table II.
Keep all studs, nuts and washers in matched e.
numbered sets and install them in the appro-Replace priate holes in the reactor vessel.
(Pc. 049-04 ) in studs top closing screws after tensioning operation is completed.
Stud tensioners should not be pressurized f.
unless the stud tensioner puller bar is completely engaged on assembled stud.
(
The water level in the vessel should not be g.
inches to the vessel r'aised closer than six (6) mating surface prior to tensioning the first This stud bolts in bolt-up operations.
six (6) is to preclude the possibility of trapping water between the two metallic O-rings.
All Supervisors using this procedure shall read Ma..nte-
" Tool & Misc. Items, Cleanlintss 3.4 nance Procedure MllF, subsequently, insure and Closure Inspection Control"; and, l
lines that each person he supervises understands the c ean i
and tool control requirements to be used when perform ng The Supervisor shall i
the steps within this procedures.
dating the signature, under the REMARKS sign his name, i
section of this procedure's cover sheet signifying that the above actions have been completed.
_.R Rev 5
-2b-
4.0 T T : : : " ". _
Removal of Reactor Head and Internals i
4.1 remove and store the rod drive (1)
Disconnect, cooling air supply system.
Remove and store the missile shield above (2) the Steam Generators.
Disconnect the electrical cables from (3) the rod drive mechcnisms and store.
the electrical Do not disconnect NOTE:
cables for the part-length rods at this point.
Have the Performance Department dismantle en all instrumentation parts (4) the equipment lined in accordance with the instruction out in References A-2.
Remove and store the reactor head rem I
(5) insulation.
Install seal and lower the reactor vesse cavity seal ring to rest atop the support (6) ring.
Secure the reactor vessel seal ring.
(7)
Lower the Stud Tensioners and all other necessary tools and equipment required to (8) h unbolt and remove the closure head, to t e l
reactor flange elevator using the polar l
crane.
l l
Rev. 0 1-
(E)
Checi. with th: Or.cr:tient rept. to inrure that the reactor coolant system water level is drained to four (4) inches below the reacter vessel closure seal line.
(10)
Have Performance Dept. retract all flux detecters and thimbles.
Also remove the metal impact menitor syster on Stud $32.
(11)
Attach the stud tensioners to the hoists on the head lifting device.
NOTE:
Care must be exercised when raising the stud tencioners to avoid contacting the head flange or the studs.
(12)
To u..bcit the head frcr hydrostatic test conditions utilizing 0-rings, a three (3) pass procedure is recc= mended at the following
.(
pressures:
PASS PUMP PEESSURE 1st 7100 psi 2nd 4700 psi 3rd 0 psi To unbolt the head from operating conditions utili:ing 0-rings, a two (2) pass procedure is recommended at the following pressures:
PASS PUMP PRESSUPI ist 4700 psi 2nd 0 psi Prior to each reduction of pressure the tensioners should be brought up to pressure until it is found that the nuts are free and can be backed off.
The nuts should be backed FOS Rev. O j
off ab::: ene tur.. (equivalent to alcut six turns of the tensions: handle) and the When the desired pressure decreased slowly.
close the intermedicte pressure is reached, release valve on the tensioners and again This will leave a lower inter-seat the nut.
mediate load in the stud.
The order in which the tensicners are applied for disassembly is exactly the same order in which the See tensioners were applied for bolt-up.
Column 1, Tables I and II.
Remove the stud tensioner from the vessel (13) and place on the operating deck.
- flange, Care must be exercised when removing
- NOTE:
the stud tensioners to avoid contacting the head flange or the studs.
l Raise the studs until they are clear of the (14) heed using a spring scale to assure that at one-half of the stud weight is taken least When the studs are by the tensioner hoists.
clear of the head, block them in that position.
Three studs 120' apart will have to be NOTE:
removed and placed into the stud carriers, then placed on the operating deck.
Install the alignment pins in flange holes 12, 28, and 44.
Install the three (3) sleeves and bottom tightly in their respective holes using the sleeve wrench and torque to approxi-Ibs.; the sleeves are identified mately 40 ft.
Assemble by their respective hole number.
the collars and besring plates to the alignment i
Rev. 0
' MBC
Install pins using the hex heed bc1ts.
the 0-rings in the 0-ring groeves of the alignr.cnt pins uring a lubricant.
Install the eye bcits in the top of the alignment pins.
Carefully install the assembled alignment pins into the proper holes being careful not to damage threads or bearing surfaces.
Engage the threads of the collar with the threads of the sleeve.
Use the bar to tighten the alignment pins to approxi-mately 25 ft. lbs. torque.
Install all refueling cavity underwater lights.
(15) from i
RemcVe all remaining tools and equipment (16) refueling cavity.
Check canal and cavity for cleanliness.
Remove and store the control rod drive (17) columns.
mechanism seismic support
~
Erect a platform bridge on the head-lifting (18) length rig walkway for access to the part drive mechanism.
drive (19)
Unlatch the part-length RCC element shafts frem their respective part-length RCC elements using the Part-lencth Drive Shaft Unlatching Tool suspended from the polar crane hoist.
(Refer to Part-length Control Rod Drive Shaft Unlatching Procedure.)
Secure the part-length drive shafts in the up position.
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the reacter closure head approximately (25)
Lift checking fer levelness as it is 24 inches, being lifted.
Check guide studs to determine if binding is occuring.
Radiation measurements must be PRECAUTION:
taken during this operation around the vessel flange to assure safe radiation limits.
(26)
Using a flashlight, verify that the RCC element drive shafts are free in the mechanism housings raised with the closure head.
This and were not can be verified by source range nuclear instru-mentation.
(
Evacuate all personnel from the refueling cavity.
(27) to flood the (26)
Coordinate with Operations Dept.
ref ueling cavity to a level just below the closure head.
Continue lifting the head and raising the water (29) level as the head is being lifted, keeping the head above the water level.
Watch for any sudden increase in load, CAUTION:
which would indicate binding or an interference.
o Rev. O MBC
(30)
Flace tw: new reacter vessel closure gaskets around the cIcsure head storage pad, before lowering head on to it.
(31)
As the water level approaches the top of the cavity, lift the reacter closure head out of the refueling cavity and place it on the storage pad.
PRECAUTION:
All personnel must be kept clear of the vessel head during movement across the operating deck.
The underside of the head is highly radioactive.
(32)
Raise the water level in the refueling cavity to the proper refueling level and turn on underwater lights.
PRECAUTION:
Lights must not be turned on until submerged in water.
(33)
Unlatch the RCC element drive shafts from their respective RCC elements using the Drive Shaft Unlatching Tool suspended from the manipulator crane hoist.
(Refer to Control Rod Drive Shaf t Unlatching Tool Operating Instructions.)
NOTE:
Observe the top of the drive shafts fer evidence of magnetic particle buildup on the disconnect button.
The particles will be attracted to components of the Drive Shaft Unlatching Tool and may cause the tool to jam or malfunction.
Therefore, these particles must be removed with a swab or magnet before using the tool.
Rev. O
-o -
L mer
Reneve drive sh ft fro upptr internals
(
using the drive shaft ur. latching tool.
(Refer to Control Rod Drive Shcft Unlatchine Tool Crerctine Instructiens.)
(34)
Attach load cell to internals lifting rig and remove lifting rig from storage location using the polar crane.
(Refer to Internals Removal and Installation Procedure.)
NOTE:
Prior to removal of the lifting rig from the storage location, verify that the reactor vessel flange protector is securely fastened to the lifting rig.
(35)
Lower the internals lif ting rig over the vessel guide studs until the rig is seated
(
on the reactor internals.
(36)
Release the reactor vessel flange protecter from the lifting rig.
(Refer to Internals Removal and Installation Procedure.)
(37)
Attach the lifting rig to the internals.
(32)
Slowly raise the internals assenbly observing the total load indicated on the lead cell.
(Est.
weight 147,500 Upper Internals, 341,500 Lower Internals.)
CAUTION:
Watch for any sudden increase in load, which would indicate binding or an interference.
(39 )
Continue to raise the internals assembly slowly until it is clear of the reactor vessel.
e 4 4
$$ M M
(40)
M:ve thc it.tcrnalc asscelly laterally to designcted storage stand.
(41)
Lower the intern-Is asser11y into the storage stand.
(42)
Remove load cell from lifting rig.
(Refer te Internals Liftin Ric Operating Instructions.)
I (43)
Open fuel transfer syster. gate valve in the spent fuel pit.
(44)
Remove fuel assemblies and RCC elements from the reactor as required.
(45)
If needed, recove the specified number of irradiatien sample holder assemblies using the Irrad atien Samtle Handline Toc 1 attached to the plant crane.
(Refer to Irradiation I
Saccle Handling Tool Ocerating Instructions.)
NOTE:
See Reactor Vessel Radiation Surveillance Program Report for sample removal schedule.
4.2 Installation of Internals and Reactor Head (1)
Close fuel transfer system gate valve in the spent fuel pit.
(Refer to Fuel Transfer Syster Operatine Instructicns.)
p* r, GF,A l
(2)
Attach load cell to internals lifting rig ngj p usine the polar crane. s.(Re'f er to Internals m/'r
~ ~.-
i a-r Lifting Rig Operating Instructions, y, i
(3)
Raise the upper internals assembly slowly out of stand.
k Rcv. _ 0
)
i Move intcrnals assembly lattrally over reac:cr.
(4)
Lower the internals slowly over the guide studs (5) and into reacter vessel, while observing the total locd indicated on the load cell.
Watch for any sudden oecrease in CAU IO:::
load, which would indicate binding or an interference.
Continue to lower the internals assembly (6) slowly until the internals are seated in vessel.
Disconnect the internals lifting rig from the (7) the reacter internals assembly and connect vessel flange protector to the rig.
(Refer to Internals Removal and Installation Procedure.)
.i Remove the internals lifting rig and reactor (B) and store in proper vessel flange protector, location.
Remove load cell from lif ting rig.
(9 )
Relatch the RCC element drive shafts to their (10) respective RCC elements using the drive shaft unlatching tool suspended from the manipulator (Refer to Drive Shaf t Unlatchine_
crane hoist.
Tool Operatine Instructions.)
Unfasten and remove the two used reactor vessel (11) closure gaskets '.tc c the closure head.
nust be cut in half and NOTE:
The stLxat, then removed from the storage pad area.
Clean and inspect the surface of the two new I
(12) reactor vessel gaskets.
Rev. 0 MBC
+
f (13)
Thcrcughl; clean and inspect closure head flange sealing suriace.
Install and attach two new reactor vessel (14) gaskets to the closure head.
(15)
Thoroughly inspect, clean, and lubricate stud threads.
Remove all foreign substances from the a.
studs, nuts, and washers.
To remove rust preventativ, redistilled ethyl alcohol is suggested as a cleaner.
Special attention should be given to the threads and all mating parts of the studs, nuts, and washers.
Lubricate threads and all bearing surfaces b.
of studs, nuts, and washers with Molykote, g
Type Z, applied by brushing or wiping.
CAUTIO:;:
Do not permit the Molykote to conta-t Ni-Cr-Fe alloy or stainless steel surfaces.
Raise the reactor vessel closure head frem (16) its support pad using the polar crane and the lifting device.
(17)
Check closed the fuel transfer system egate valve in the spent fuel pit.
(18)
Lower the vessel closure head over the reacter vessel as the water level in the refueling cavity is lowered, and turn off underwater lights.
l 4
i P FIC.' 1'!! C :f :
The u..Ser tatcr lightc should be tu..e:
l.
of f while they are still below the refueling water level.
Do not allow the closure head to come 2.
into contact with the refueling water.
sudden decrease in load 3
Watch for an3 which would indicate binding or an inter-ference.
Centinue lowering the closure head to within (19) one foot of the reactor vessel flange, and turn off all underwater lights.
Drain all the water from the refueling canal.
(20)
Clean reacter vessel mating surface.
(21) is Lower the reactor vessel head until it I
(22) seated on the reactor vessel.
Replace fuel transfer tube blind flange.
(23)
Remove the head lifting device sling assembiv.
(24)
Wash down walls of the refueling cavity and (25) equipment with demineralized water as required.
Lower the stud tensioners and all other necessary (26) reactor vessel closure head replacement tools and equipment from the operating deck to the reactor flange elevation using the polar crane.
Remove all stud hole plugs.
(27)
Remove the guide studs and store.
(28)
Lower the stud carriers to the refueling canal.
(29)
Rev. 0 MSC
(30)
Install the botter closing screws in the J
bottom of the closure stud bolt and the stud lifting eye in the top of each stud belt.
(31)
Attach the scud lifting eye (P c. 449-07) to the spring scale and lift the closure stud bolts.
Lower the bolt and engage in the matching stud hole in the vessel flange.
Tighten each stud i
by hand until it bottoms, then use special wrench to back off one full turn.
Care should taken not to damage threads when installing the studs.
(32)
Install matching washers over each stud with convex side up.
Engage matching nuts on studs and tighten snugly with special nut wrench (Assy. 449-12, Figure 5).
(33)
After all 54 studs are installed, the nuts and washers snugged u, against the flange, take depth readings of the distance between the tcp of the stud and the top of the measuring rod which is inserted in the hole provided in the center of the studs.
Record the dial indicater readings in Column 1 of Table III or Table IV, depending on the purpose of bolt-up.
Table III is provided for hydrostatic bolt-up while j
Tcole IV is provided for operational bolt-up.
tar Rev. 1
NOTE:
Three (3) reasuring rods are furnished, f
One (1) n.easuring rod is to be marked
" Master" and cust be used at all times when the stud elongations are being measured with the depth micrometer for deterrining elongations which will be recorded in tables.
The three (3) measuring rods are for use with the tensioners.
It should be noted that a measuring rod must be present in the studs being tensioned if the dial gages on top of the tensioners are used.
4.3 Tensioning Precedure (Hydrostatic and Operational Conditions).
The fcilowing supplements the Biach Industry, NOTE:
Inc. Paintenance Manual for the 2,350,000 lb.
tensioners, Model No. 2-5055 (Sec. (5) and is based on actual bolt-up experience gained in The bolting up for hydrestatic testing.
recommended bolt-up procedure for hydrostatic testing is a three (3) pass procedure with an adjusting pass or partial adjusting pass to bring elongations for all stud belts into the desired tolerance range.
Operaticnal bolt-up should be a two (2) pass procedure with an adjusting pass to correct the elongations for individual stud bolts which are out of the desired tolerance range.
0 Rev. O MBC
Stud h;te.:d fe: 0 rngs (ii.,d:e:t.:ic 1 Opn.amr.:,1)
- 4. 3. 2 Hydre>tatic Pr: load.7854 x 3125 x (180.475)2 = 70,942.000 lbs.
A.
Bolt.U; Centm;encies.10 x 79,942.003 = 7,994,203 lbs.
Total = E7,936,200 lbs.
Pg = Hydrostatic Preload per Stud = E 93f,>.2.00. = 1,625,448 5,
Operational B.
Picssure Preload.7854 x 2503 x (180.475)2 = 63,953.602 lbs.
Bolt-Up Contingencies.10 x 63,953,602 = 6,395,360 Tot 21 = 70,34S,962 lbs.
Po = Operating Preload per Stud = 70 34S;96.:' = 1,302,758 lbs.
5s-C.
Stud Elon;ations (Hydro:tati & Operational)
E = Total Stud Eloncation Required = hg T
where.L = distance between bottom thread in nut and top thread m the vessel nange plus 1.25 x nominal stud diameter = 39.750 mches A = Min. Cross Sections! Area of Stud = 35.3 Sq. In.
(
E = 30 x 10 psi (Material A-540 B-24) 6 Pg = Hydrostatic Load per Stud = 1,628,448 Lbs.
Po = Operational Load per Stud = 1,302,75S Lbs.
4.3.2 Hydrostatic Elongation ET = 1.628 448 lbs. (39.750 inches)= 0.061 inches min.
35.3 sq. in. (30 x 100)
For the hydrostatic test bolt up to contain a pressure of 3125 psi (equal to 1.25 x design pressure), the nominal stud elongation should be 0.003 in, t.002 in. since it is impossible to tension all studs exactly the s:nne amount. This nominal clongation can readily be obtained to this accuracy and will allow no stud to be tensioned less than the 0.06l in.
required while 0.065 in. clongation does not overstress the studs. It is desirable for the average elongation for all fifty four (54) studs to be within t 0.001 in, of the nominal clungation but obtaining this accuracy may be time censuming and is not absolutely necessary. Table 111 provides space for determining clongations achieved and making corrections for out of toleranee conditions.
Rev. O
4.3.3 Op retion ' E' ";..' an D 'N O '" i = 0.040 inch min.
Eo=! J20 35.3,q. in. (30 x 10;
For operational bolt-up to contain a pressure of 2500 psi (design 0.05) ?.002 in. This pressure) the nominal elongation should be nominal elongation can be readily obtained to this accuracy and wi allow no studs to be tensioned less than the 0.049 in. required while 0.053 in. does not oserstress the studs. It is desirable for all fifty four 0.001 in. of the nominal elongation since (54) studs to be within +.
operatin; concitions will stress studs over long periods of time. T IV provides space for determinin; elongations achieved and correc for out of tolerance conditions.
Bolt-Up and Tensioner Operation 4.3.4 For installation and operation of the stud tensioners consult the Instruction and Maintenance Ma.ual for Biach tension A.
2-5055.
i CAUTION Stud tension:rs should. not be pressurised unless the stud tensioners pu!!er bar is completely enga;ed on an assembled stud.
Pull should be accomplished in sets of three (3) studs at the pump pressures and in the sequence shown on Table I for B.
hydrostati: conditions and Table !! for operating conditions.
CAUTION Maximum hydraulic pump pressure shall not exceed 9500 psi.
The elongation required to produce the required pre-stress in the stud bolts is given in Column 7. Tabic 1. for hydrostatic bolt up.
- 11. for operational bolt-up. Adjusting and Column 6. Table pump pressures are given in Column 6. Table 1, and Colum Table 11, in the respective boli up procedures. They adinstin; pump pressures shouhl be used for all studs which are out of elongation toleranee band. Note that the adjusting pump presstues aie those which correspond to the nominal elongatio desired, and are not the pump pressmes which the liiach M.mual i
~. I Rev. O --
GF
curve, Stud Dacation (i,) wrsus Pur r Pressure (rsi). indic: te-will pro;! ace :n clur.;;tien gre:.ter in m:;nitude than the desned methsJ of adiustment will minimize the value. Folluv.m; tine possibihty of stuJs going oui of tolerance on the hi;h side of the tolerance band during the adjus:m; pass. It has been determmed that a stud out of tolerance on the lov. side of the tolerance nu,.
be adjusted casier than a stud that is oser. tensioned. This limitation on adjustin; pressures becomes increasingi) important for the hy drostatic bolt-up in that the stud nut <. are diffict.!t to break loose when stud clonganon exceeds the elon;ation tolerance.
It should be noted that if it is necessary to reduce the elon;at;on of any stud, the tensioner should be attached and pumped to a pressure greater than the previous oil pressure used (approximately 100 psi greater) until it is found that the nut is free and can be backed off and rotated in a counterclockw should be backed off about one turn The nut direction.
(equivalent to about six (6) turns on tensioner handle). Reduce the purnp pressure to the adjustin; pump pressure desired and turn the nut back up, reatin;it firmly a;ainst the washer.
After all out of tolerance studs have been adjusted,dialindicator C.
readings should be taken for all remaining studs and entered into Column 4, Table Ill or T:ble IV (whichever is applicable) and clongations recorded in Column 5. This is necessary since elongations for other studs than those adjusted may move slightly during the adjusting procedure. To obtain an accurate avera;c elongation, this is absolutely necessary.
EXA31PLE in. t.002.
Assume bolt.up to operatin; requirements of 0.051 Tabulation of elon;stions obtained by use of Table IV shows that five (5) widely disp:rsed bolts are out of the required tolerance band.Four (4) of these stud bolts are below the minimum tolerance limit (0.0 in.,0.045 in.,0.047 in., 0.034 in.). One (1) stud bolt is found to be above the tuaximum tolerance limit (0.055 in.). Bring the elongations into tolerance as follows:
Note In adjustin; individual studs, use only one (1) tensioner with the preuure hoses for the two (2) other tensioners disconnected.
i Rev. O For the Four (4) Stud Dolts Below the Minimum Tolerance Range:
4.3.5 Attach tensioner to cach stud :nd pump to the adjustin; pressure Column 5, Table 11. Turn the nut seating it nrmly against the washer A.
disen;c;c puller bar and remove tensioner.
After the four studs have been retensioned take depth readin elongation is within the tolerance ran; (0.051 in.+.002 in.).
B.
For the Gne (1) Stud Bolt Above The Maximum Tolersnee Range:
4.3.6 Refer to the Biach curve Elongation vs. Pump Pressure and dete ill be required to break the nut loose on the "over tensioned" stud. This A.
i t
approximately 100 psi greater thin that press 7900 psi.
Attach tensioner and pump to the pressu B.
firmly one turn. Reduce the pump pressure to 7000 psi:nd turn the nut
[
against the washer.
Take depth' readings to determine if the subject has been brough C.
(0.051 m,?.002 in.).
Note After all of the "out-of tolerance" studs have been adjusted,take d readings for :!! fifty-four (54) studs and enter in Column 4. Table Determine the adjusted clon;2tions (readings in Column 4 minus t readin;s in Column 1) and enter in Column 5. All studs should now in the tolerance range.
Refer to Section 4.1 (12) for unbolting procedure.
D.
i Rev. 0 MBC
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ELONGATION DAT A SHEET FOR HYbi Ub i A 4 s. s.w -
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34 a
. ELONGATION DATA SilECT FOlt ilYDitOSTATIC LOAD TAllLE lit.
Rev. 0
. M8C
l ELCNG ATION DAT A SHEET FOR HYDFsOET ATIC LO AD 4
5 3
2 1
Ar.'.OUNT OF DIAL Ar.tOUNT OF RES.
DIAL INDICATOR ELONG. AFTER INITI AL D:AL INDICATOR RES!DU AL STUD INDlOATOR READING AFTER ELONG ATION READING AFTER ADJ U STi.'.E N T i
NO.
READING 3RD PASS 3RD P ASS (21)
ADJ. P ASS (41) 35 l
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SdM =
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Avesa;e Revi61 Elon;ation = Sum Col. 5,
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SUPERVISOR TADLE 111 (Continued)
ELONG ATION DATA SilEET FOR HYl)ROSTATIC LO AD O
Rev. 0
. MBC 1
1 l
ELONG ATIOt! D AT A SHE ET FOR C 'EF. ATIO:J AL LOAD
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DIAL A'J.Q J.'T O F CIAL 4:. ':
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RE ADi!!G 2:!D PASS 2 JD PASS (21)
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3.1 34 TAllLE IV ELONGATION DATA SilEET 170lt Ol'EltATIONAL LOAD RPv. O
ELOf JG ATION DAT A SHEET FOR OPEo. ATION AL LOAD 4
5 1
2 3
DIAL Af.".OU.;T O F DIAL A /,0., :T O F R E".
INITI AL C! AL li?DICATOR RESIDUAL If?DICATOR ELO:1G. AFTER STUD If4DICATOR READING AFTER E lot lG ATIO!?
READ!f4G AFTER ADJUSTf/ E!'T 1
NO.
RE ADl :G 2ND P ASS 2ND P ASS (211 ADJ. P ASS (4 1) l 35 36 l
l 37 l
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54 SU.\\1 =
Average Residua 1 Elongation = Sum Cet 5, DATE i
34 1'
SUPERVISOR t
)
(
TADLE IV (Continued)
)
ELONCATION DATA SilEET FOlt Ol'E!!ATivriAL LOAD
{
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M8C
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9 4
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ADJUSTI!:G FIRST PASS PASS DESIRED PUMP PQi?
RESIDU/.1 SET STUD PRESSURE PRESSURE ELO!:GATIC:;
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I T..'. '. S T. S (PSI)
(PSI)
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0 t 1
l 1, 19, 37 2200 1800 i
2 l 10, 20. 40 l
3
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._.14, 32, 5_0 4
.5 12> _30.u _4 3 2000 l
6__ _
3> 21> 39 7
8.1.26. 44 8
17, 35, 53 y
j 1
9 7, 25, 43 1800
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.10, 16, 34, 52 l
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l 11 2, 20, 3S 12 11,. 29, 47 13
... 6_, _ _2 4_ m 42 _,
l 14 15, 33, 51 15 4., 22, 40 3
16, 13, 31, 49 l
l 17 9, 27, 45 l
h y
18 18, 36, 54 y
REMATJS:
r i
1 TABLE V, PARTIAL BOLT-UP I
A
?
a
C. erc cin; Ins trertic.ns for Tensioners:
5.0 r
5.1 H:.ndin; the T.ntioner::
Two lifting eyes have been providcc. in the top plate of the tcntieners Two knobs have been provided at for lifting and shif ting each tensioner.
the bottom of the sensioners to -Ilew an' operator to gui6c the.er.s:ene ac they are iinC lowered over the assembled stud and nut.
5.2 Hoses
Two tencioner hoses and a long supply hose have been provide i
the high pressure connection between the pumping unit and the ten To connect the hose, remove the dust cap which protects the bo i
of.he coupling on the tensioners and the pump and push the male t Screw on the collar al'. the way which is on the hace, into the coupling. Force is not necessary as until it bottoms.
. fit and shocid spin on. The collar must bottom.
return cystem Sirnilar hoses have oeen provided for the pneumatic They have been provided with quick couplings for of the tensionerc.
The long hose cennects from the pump to convenience in connecting.
the first tensioner, and the other two hoses connect between the tensioners.
(
Connecting the tensioners to ciuds:
5.3 Lower the Lensioners, each tensioner being guided by an operator.
The tensioner must go c.own over the ctud and nut until the hou A.
The tensioner locates on the two adjacent nuts rests on the flange.
At this time the drive sleeve for the nut will be riding on the to the nut and the puller bar will be supported by it's spring cupport E.
mechanism.
The drive Turn the c, rive sleeve by turning the 6 rive gear handic.
V." hen the uriving teeth of de C.
gear should be turned clockwise. drive sleeve match Vihen will crop into place and ce ready for turning the nut.
d engaging the Grive sleeve with the nur, it should always be tur clockwise, even when unbolting.
Grasp the handwheel at Ae %p of the puller bar and carefully D-feel for the thread engagement between the puller bar cocket and the stud.
(
Rev. O M8C
hive en;:. ped, screw or. the pullt.r ba r until 0.e I.
/. !: e r th e tl.r e: C :
holding net Lottoms on the spherical wa shers.
Each off the puller bar about I /< turn.
T.
G. Vihen this operation has been perfermed on all of the tensioncrs, th are ready to be pressurized.
The holding nut has been cecured to the puller car by means of the It has ceen set so that there is a cica:ance of H.
locking assemblies.
about 1/2" between the bottom of the puller bar and the top vi the,tud This allows for minor variations in the height of the stud.
CAUTIO ::
A tensioner sho"'d not be pressurized unless it is The reason for this is that the tensioner connee:ed to a stud.
does not have any positive stop and therefore could be danaged.
this happening accidentally, each tensioner is To guard against k* hen the tensioner is within equipped with a verning whistle, opens a valve which allows air to be 1/6" of it's full s:reke it This whis:le eni:s a very discharged inte a warning vhistle.
loud, shrill sound and is a clear warning te the pun; opera:Or tha: a tensiener is about to reach ca):inun stroke.
k* hen he hears this st.is:le punping sust be stepped i=nediately and the tensioner i
should be allowed to retract.
5.3.1 Pressurizine the tensioners:
The actual This section c.escribes the procedure for any one tensioning.
pressures and the sequence are cescribed in the section on Programming.
i The cesired pressure chould be uetermined from the charts. Operate 1.
Then : top the pump until the 2 equired pressure has been ieached.
pumping.
2.
Turn the c rive gear in a clockwise direction. This will turn the drive sleeve and in turn vrill rotate the nut. This takes up the slack When the nut that has been produced by the elongation of the stud.
bottoms, seat it with a firm twist on the drive gear.
If desired, the taking up of the slack can be Jone as the tensioner 3.
elongates the :tud so that, in effect, th e aut is always bottoming Vl a
> desired pressure has been against the spherical washer.
escribed abo' e.
v reached, the nut should be scatt 4
Rev. O M8C
I pressure and unscrew the puller 4.
Eclearc the pur,:
bar.
The tensioners can then be lifted off and shifted to the next set of studs.
5.3.2 Pneumatic Return Syster As the return system has to push the tensioners back to the starting point, it is suggested that the release valve on the pump be left open as the tensioners are being shifted to the next set of studs.
This will allow ample time for the return system to perfor= it's operation.
The tensioner has fully retracted when the piston extension It is ring is flush with the top plate surface.
recon = ended that this be checked every time before starting another tensioning operation.
Visual checking is entirely adequate.
ProgrambingProcedure
(,
5.4 5.4.1 Three. sets of charts are included.
One shows stud inad elongation in inches, the second shows the unit in psi, and the third shows total load in pounds.
Each chart has two lines, one showing the condition under tension and the second or lower line showing the residual held by the nut.
The chart for stud elongation was determined by actual test and observing the elongation on the tensioner dial indicator.
Four equally spaced strain gages were mounted on the body of the stud and these readings were also taken during test.
These were then translated into stud unit l'oad and stud total load, t-L Rev. O f3T4 _
The follr, win 1s a.- illurtration as to how to use the charts:
Assume that a certain total load is required.
Using the chart for " Total Load" find the total load and read across to the lower line marked
" Residual".
Then read down to find the required pump pressure.
This means that after pumping to this pressure, tightening the nut, and releasing the load remaining will be the the pressure, required total stud load.
A similar procedure can be used for stud unit load and stud elongation.
5.4.2 Procedure for any one pass:
As there are 54 studs and 3 tensieners, assume the studs divided into three equal segments each having 18 studs and nunbered consecutively from one to eighteen, A suggested sequence would be as follows:
1, 10, 4,
13, 7, 16, 2, 11, 5,
14, 8,
17, 3,
12, 6, 15, 9,
& 18.
By following this sequence, the tensioners are shifted around so that they are between tensioned studs and thus produce uniform loading.
Of course, other sequences can be worked out.
5.4.3 Multi-Pass Procedure:
As the vessel head will be tightened using at least two passes for the operational load and three passes for the hydro-test load, this means that on the initial pass all studs are tensioned to some pre-determined percentage of the final load.
On a two-pass program they would then be brought up to full load on the second pass.
With a three-pass program, three steps would be used.
l t
~.
1 Das,. n
For.a two-pass program, it is suggested that the first pass be at 751 of the required load with the second pass at full load.
For a three-be at 60% of pass program, the first pass might the required load, the second pass at 80% of the full load.
required load, and the third pass at of the After the final pass some readjustment few sets of studs will probably be necessary first as they will have lost some of their tension as adjacent studs were tensioned.
For the operational load, a modified final pass is few studs at higher than suggested with the first the final 1 cad, the next few at screwhat less and the re=ainder at the required full load.
This results in very even final loading with prcbably no adjustment being necessary.
As the values have can be been estimated, adjustments in the progrm:
made during the course of the initial bolt up.
In order to try out this program, it is suggested load, the that when bc1 ting up to the hydro-test a two-pass program with a modified second first time, pass for the operating load be used initially with Then the readings taken af ter the second pass.
final pass can be at the required full load for 4
This procedure will give the necessary
[
hydro-test.
data for determining the proper pressure values fer the operational load so that they will be available for the very first time the operational load is 1
required.
.i i
e s
(
TABLE OF VALUIS 5.4.4.
Pump Pressures:
Required Hydro-Test Stud Load, 1,626,0006 Required Operatir.g Stud Load, 1,300,000f For the Hydro-Test Load Three Pcss Progrcm 5,000 psi on pump I st pa s s 6,700 psi on pump 2nd pass 3rd pa:s 8,300 pei on pump For the Oseratir.- Lead 2-pass program 5,000 psi on pump 1st pass 6,600 psi on pump 2nd pass 3-pass program 4,000 psi on pump 1st pass 5,400 psi on pump 2nd pass 6,600 psi on pump 3rd pas, Modified Final Pass for Orcrating Load First six sets of.tuds (13 studs) 7,400 psi on pump Second cix sets of.tuds (18 studs) 7,000 psi on pump Third six.ets of :tuds (16 studs) 6,600 psi on pump i__
i Froccc re for Loosenin;- Nuts:
5.5 the After colting up to either the hydro-test er the operational loat,
This can be either a 2-pass or 5.5.1 tensioncrs can ve used for cisassembling.
a 3-ph :s process for the hydro-test load. U:in; a 2-pass program, all :.tuds would have their load reduced to about 2/3 of. heir load on the 1:t pass anc On a 3-pass then the load would be reduced altogether on the second pass.
program, the loads would be s educed te 50%, 60%, and to zero.
The order in which the tensioners are applied for uisassembly is The exactly the same as the order in which the studs are tensioneo.
V.' hen screwing on tensioners are applied to the :tuds in the esual manner.
the puller bar, however, a gap of about 3/16" should be left between the bottom of the holding nut and the top surface of the spherical washer set.
The easiest way is to screw on the puller car until the holding nut bottoms on This is to allow for che the rpherical washer anc then back off 1-1/2 turns.
contraction of the stur that will occur when the Icad is reduced.
The tensioners are brought up to pressure until it is found that the r.uts The are free and can be backed off oy turning the handle counter-clockwise.
nuts should be backec off about one turn which is e,quivalent of 6 turns of the
(
handle.
The t elease valve on the pumping unit should we cracked open se t hat the Y! hen the cesired intermediate lower pressure pressure occrea sec; slowly.
has oeen reached, close the telease valve, then turn the handle to again seat Then the release valve can oc opened and let de pressure go to zero.
the nut.
This will leave a lower intermediate load in de stud.
The tensioner can nov. te removed and shifted to the next set of stud Continuing in this way all studs can ce 'crought to a reduced level of loading.
On the final pass the load will be reduced to zero and it will ce found that the nuts are free.
l.
Rev. 0 MSC
_l..__-
...3
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i Rev. O I I CM
5.5.2 Remove the stud tensioners from the vessel flange using the small electric hoists.
PRICAt?TIO:::
Care must be exercised when removing the stud tensioners to avoid contacting the head flange or the studs.
5.5.3 Raise the stud tensioners using the plant crane and store on the operating deck.
5.5.4 Loosen the reactor cavity seal ring and raise e
seal ring (6 inches).
5.5.5 Remove and store seals.
NOTE:
The environment around the reacter vessel flange during plant operation is detrimental to the seal material.
g Therefore, the seals should be stored in a location that is not subjected to the reactor vessel environment during plant operation.
\\
\\
5.5.6 Reinsert all flux mapping system detectors i
and thimbles.
5.5.7 Install the control rod drive mechanism seismic support columns.
5.5.8 Erect access platform on the head lifting rig walkway.
5.5.9 Connect the electrical leads to the Part-Lencth centrol rod drive mechanisms.
.t CGe nev. o
5.5.lt Remove pcrt-lengt? drive shcf: retaincrs, and I
drive shafts relatch the part-lencth RCC element to their respective elements, using the part-length drive shaft unlatching tool suspended fren the polar crane hoist.
(Fefer to Part-Lereth Control Rod Drive Shaft Unlatchine Tool Coeratine Instructions.)
5.5.13 Remove and store the access platfor=.
Dismantle the equipment on all instrumentation 5.3.12 ports in accordance with the instructicns outlined in Appendix B-2 and install conseals.
Install the reactor closure head insulation.
5.5.13 all remaining electrical leads to RCC 5.5.14 Connect element drive mechanisms.
(
5.5.15 Replace missile shield and supports.
5.5.16 Replace and reconnect the rod drive cooling air supply system.
5.5.17 Begin filling and venting the reactor coolant (See M-4, Filling and Venting the system.
5.5.19 Clean up the area around the reactor vessel closure head and the bottom of the refueling i
cavity.
1 s
Rev. 0 M8C 1
Appendix A-2 to Refueling Preparatien of Instrumentation Ports Prict 1.
Disconnect ther=ocouples.
Recove jack screws, item 5, }[ drawing 685J561.
2.
3 Remove split ring, item 4, }[ drawing 685J561.
Re=ove jack screv plate, item 3, }[ drawing 685J561.
4.
5, Re=ove clamp, item 6, }[ drawing 685J561.
'6.
Remove male flange, ite: 1, }[ drawing 685J561.
7.
Remove conosesi gasket, ite: 8, }[ drawing 685J561.
B.
Re=cve conoseal gasket, item 7, }[ drawing 6S5J561, using the Conoseal Casket Removal Tiiol, item 16, }[ drawing 685J561.
9.
Place masking tape over gasket seating surfaces.
at top of 10.
Install 0-ring, item 202, }[ drawing 686J127 ther=occuple support column, items 36, 37, 38, 39, and 40
}[ drawing 686J217.
11.
Install protective sleeve, item 41, }[ drawing 656J127.
12.
Install protective sleeve locking spring, item 37, }[
drawing 686J127.
(
MSC Rev. 0
APPINIIX B-2 INSTRU.*'. INT PORT ASSI.vE Y GINIRAL INFOPS.ATION 1.
Re=0ve CRDM Cooling Guards 2.
RemcVe thermocouple tray.
3.
Remove protective sleeve locking spring.
4.
Remove protective sleeve.
5.
Re=0ve 0-Ring.
"Neolube" thread lubricant must be applied to all male and 6.
Allow "Neolube" to dry thoroughly before female threads.
assembly.
contact the surface 7.
Where " slings" or lifting devices might of ecmponents, adequate blocking must be provided.
All components must be thoroughly cleaned before and after 8.
assembly.
Visually examine all parts prior to assembly for any damage.
9.
(616A210)
Following installation in accordance with procedure 10.
I page 42-45:
a.
Reconnect thermocouples b.
Install thermocouple tray Install CRDM Cooling Guards c.
t Rev. 2 41-wna
1 NOTE:
C1ccu11nass to of th2 utsest importance in o conoscal joint.
Asse=ble join: using clean whito lint-f roe gi:ves.
When the Seal Plug is used ins: cad of the Ther=occuple Colum., follow this same procedure, replacing :he Supper:
Colu=." in Steps 4, 5,19, and words "Thermeceuple Supper:
g, 20 with the words " Seal Plug", and deleting Step 8.
/
Clean lower conoseal gasket as shown in E Drawing " Instr.:=enta:ict 1.
Column, Seal Loading, and Hydrosta:1c Test Asse=bly" with Por:
ace ene, making sure all surfaces and edges are free frc= any dus:,
s s
P or nicka and scratches in excess of 32 PF.S.
- dirt, Place cleaned lover conoseal gasket en cleaned fe= ale conoseal i
2.
flange of Port Column.
CAUTION _ : When placing this conoseal gasket, the apex of the cone formed by the conoseal gaske:
be certain that See view in y Draving peints toward the t:o of the vapor con:ainer.
Colu=n, Seal Leading, and Hydrostatic Tes:
"Instru=en:ation Pcrt Assethly".
g n!
as shewn in detail, E Oraving " Ins:ru-3.
Clean upper conoscal gaske:
mentation Port Column, Seal Leading, and Eydrosta:1c Test Asse=bly" vich ace:ene,. making sure all surfaces and edges are free fro = any or nicks and scratches in excess of 32 RMS.
dust, dirt, Clean conoseal surface of Thermocouple Support Colu== with ace:ene, 4.
dir:,or making sure all corners and surfaces are free from dust, other foreign contamination.
Place cleaned upper conoseal gasket on cleaned surfaces of 5.
Thers,: couple Support Column. ' CAUTION _ : When placing this ceneseal gasket, be cer:ain tha: the apex of the cone for=ed by the ucuscal n
See view Sasket points toward the bottom of the vapor container.
( --s
'C in E Drawing " Instrumentation Port Column, Seal Leading, and Hydro-static Test Assembly."
62-e-3 616 ^ 21o cr. 1 w
'inghouse Electric Corporation Page 2 of 5
==
CONO$!AL ASSDGLY SPECITICATION FITTS3CRGH, PA.
NDN f a ENERGY SYSTIMS
,g,,,, a,7, e,, _
Rev. 2l 3
I p
W:3
_n_
- ~ X
6.
Cican =de conoccal finnge of port colu=r. vi:h cce:ene z.d.ing cer:ain that all corners and surfaces are free fro: dirt, dus,
any other foreign conta=ination.
c 7.
Wen the seal plug is e_-.ploye d for hydros tatic tes:ing, asse=ble the seal plug, conoseal and port colu== as follows:
(a)
Place the seal plug with upper coneseal gasket in the male flange.
(b)
Ins:all the seal plug locking pla:e.
8.
Place veld ring on fe= ale flange.
Place male flange. onto fe= ale flange until male flange res:s on the icver conoseal j
gaske:.
Apply "Neolube" to all cla=p contact surf aces and f
to inclined surfaces of the ma.le and fe= ale conoseal flanges,
as shewn on @ Drawing "Inscru=en:ation Por: Colu=n, Sed
- Leading, and Hydros:atic Test Asse=bly".
Asse=ble the cla=p around the = ale-f e= ale flange joint, and hand tigh:en l'
the cla=p bcli:s.
Remove cooling shroud plate at loca:icns near Thermoccuple 9.
I Aasenblies where interference may exist. Rang axial loading ra= asse=bly, @ Drawing 8823291, fro = crane.
A11cv loading rs=,
Ita= 1
@ Draving 882D291, to res: on locking flange, Item 3,
@ Drawing,882D291, when hanging from crane.
10.
Locate axial loading ran asse=bly, @Draving 8803291, over male flange.
11.
Lower axial loading device assembly, @ Drawing 8823291 un:11 loading ra=, Ite: 1, @ Drawing' 882D291, res:s on male flange, as shown in @ Drawing "Instrumenta:Lon Port Column, Seal
- Leading, and Hydrostatic Tes: Aase=bly".
Continue lowering axial leading device until the locking flange, Item 3, Draving 882D291, can be engaged in the female flange of the Por Col m.
~
I 62-e-a sis A zio, ar. 1 W_cfinghouse Electric Corporation w
Page 3 of 5
=
CONOSEAL ASSEMBLY SPECIFICATION mt Pi ttsbur;h, Pa.
NUCLEAR ENERGY _ SYSTEMS w -,..,
_ spe_coxia,
.=
w
1 1
12.
I:6ait locking flange, I:e=
5.,
"reving SE D:91, in ene fe_t;e p
flange of the Port Colu== by rota:1=g locking flasse appr:xi=a:ely j
h 15 ' s uch tha t the protrusions are jus:
inside the es:ches en the fe=d e flange.
13.
Inser: ra=, as shown 1: @ Drawing "Instru=en:ation Por: C:1.:::,
p F
Seal L:ading, a=d Hydros:a:1c Tes: Asse=bly".
t 16 Apply be:veen 5,720 psi c:
6,390 psi to the loading ra=, 1:e :.,
@Dravig 8523291.
CA" ION:
Atelv : Mis load graduallv.
15.
Main:ain this ra: load while adjus:ing the cla=;
so tha:
the cla=p bo'.ts are located such tha: the axial loading device can be re=oved af:er the cla=p is tightened, as shown on @Draving
" Ins tru=enta: ion Port Colu=n, Seal Leading, and Hydros tati: Tes:
As s e=b ly.
1 16.
Tighten bolts c male-f e= ale Flange Cla=p unifor=1y, in l
incre=en:s of approx 1=a:ely 5 to 1C ft. Ib. tercue, us::.1 l
Le final torque (12C-128 f:. Ih.)
value is at:ained.
(
17.
Release pressure on loading ra= and rs=ove.
18.
Re: ate the axial loading device to cae uniceked posi: ion as shov.
on @ Drawing
" Ins.:rumentation Port Colu=n, Seal Loadi=g, and Hydrostatic Tes Assembly",
and ra=ove.
CACTION: KIIP HA4. DS FREE OF TIX:'URE DLAING REMOVA*..
19.
Install jack screv pla:e, as shown in @ Drawing "Instru=esta: ion Por: Colu=n, Seal Leading, and Hydrostatic Te.s t Asse=hly", over Ther=occuple Supper: Colu=n.
n
+
b 20.
Install spli
- ring, as shown in sa=e drawing, to Ther=occuple Supper: Colu=n.
l l
62-e-5 W"7inghouse Electric Corporation w
616 A 210, Gr. 1 Page 4 of 5 yna CONOSEAL ASSE4LY SPEciricATing cem,a NUCLEAR ENERGY SYSTEMS P1tisburgh, Pa.
)
II.
- . stall jack Screws t0 jack Scre* : late.
/
l
'2.
g.te. ja:k s:rews urifor.ly (ap;roxi.ately 5-10 in. Ib. pe-5 rew} Staggering across the ;attern until final t0P0ue (95 '.~i l
in. Ib.) i$ Cbtained.
This assures a level raise Cf t*.e ;'.;;.
23.
relic. tnis procecure for all instra. entatien ports.
g C
C C
62-e-6
'inghouse Electric Corporation w
sie A 21 P20e '
rFNOSEAL ASSEMBLU SBECIFIC8 TION
'