ML20195C386

TN-8L Draft Unloading Procedure for McGuire Station

ML20195C386
Person / Time
Site:	McGuire, Mcguire
Issue date:	05/09/1986
From:	TRANSNUCLEAR, INC.
To:
Shared Package
ML20195C357	List: ML20195C352 ML20195C371 ML20195C386 ML20266E280 ML20266E285
References
E-8221, TAC-61099, TAC-61100, NUDOCS 8605300250
Download: ML20195C386 (83)

Text

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ATTACHhinT 1A E-8221 May 9, 1986 TN-8L DRAFT UNLOADING PROCEDURE FOR McGUIRE STATION Transnuclear, Inc.

One North Broadway White Plains, N.Y.

10601 8605300250 860523 PDR ADOCK 05000369 PDR P

i UNLOADING OPERATIONS This procedure describes the unloading operations of the TN-8L cask at McGuire Station.

Instructions, procedures, forms and report outlines are provided, or referenced, for the guidance of the facilities staff in preparing the necescary administrative, operational and test procedures that are required to document, control and verify cask unloading operations.

Sections 1.0 through 4.0 of the " Unloading Procedure", provide the step by step procedural sequence to be followed in the receipt, unloading and shipment of the cask.

Procedural steps in the " Unloading Procedure", marked by an asterisk

(*),

indicate information is required to be entered on the refrenced form or Section 5.0 provides an example of a Cask Unloading report.

for each unloading operation and Report which will be filled out is included with the shipping documentation and is also retained as a permanent record.

Tools, accessories, and system interfaces that are required during cask unloading operations are identified as they are required.

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UNLOADING PROCEDURE 1.0 CASK ARRIVAL 1.l*

Inquire for the driver's report, shipping documentation and loading report, and any special precautions.

1.2*

Review all shipping documentation and note any comments provided by the shipper.

1.3 Slide back the trail'er protective enclosure per the following instructions:

1.3.1 Release the tarpaulin tie-down along the sides of the trailer by pulling the elastic tie-downs from the trailer tie-down hooks.

1.3.2 Release the trailer rear tarpaulin section by unbuckling the straps along each side of the tarpaulin.

1.3.3 Roll-up the rear tarpaulin section and secure it in this position by placing the straps around the tarpaulin and buckling the straps to the tarpaulin roof section.

1.3.4 Slide the enclosure forward by releasing the lock pin on each side of the rear track bar and having one man at ground level on each side of the trailer.

Grasp the side section of the tarpaulin and pull it towards the front-of the trailer (this will result in sliding the roller machanism forward).

Slide the enclosure until the tarpaulin is drawn as far as possible against the front of the enclosure.

A rope and pulley are also located on the inside of the trailer front wall to assist in pulling the tarpaulin forward.

The mechanism can then be locked in place by the pin locks on the tarpaulin track.

1. 3. 5, If it is desirable to limit the cask or cover lift height during removal from the trailer, the lengths of the slide mechanism roller tracks may be removed between the track support posts.

This removal is done by retracting the spring loaded pins from the ends of the track and removing the track section.

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1.4*

Perform cask and trailer radiation surveys and record data on Form 1 " Cask Receipt Radiation Survey" and Form 2

" Trailer Receipt Radiation Survey" (provided at the end of this chapter) and on the " Cask Unloading Report" (Section 5.0 of this chapter).

Complete the survey forms and retain for documentation requirements.

This monitoring shall be performed no later than three hours after arrival.

1.5 If removable contamination levels are acceptable, excessive road dirt, if present, can be washed off.

(Site discretion).

1.6*

Using a hand-held pyrometer, measure the fin surface temperatures on right and left sides of cask and record on

" Cask Unloading Report" (5.0).

Site safety requirements should be checked to determine if protective clothing (e.g.

gloves) are required.

1.7*

Perform cask receipt inspection and record results on " Cask Unloading Report" (Section 5.0) and verify that:

1.7.1 Cask and trailer appear to be in good physical condition (i.e. no large deformations, cracks, paint removed from large areas, surface cleanliness is acceptable and no signs of mishap during transport).

1.7.2 Cask tie-down is acceptable, i.e. no loosening of bolts and collars are correctly positioned on trunnion inside shoulder.

1.7.3* Security seals are installed on the shock absorbing covers and show no signs of tampering and have the same number-as shown on the cask receipt shipping Record the numbers on the cask Unloading papers.

Report.

1.7.4 The regulatory labels of the cask and vehicle are installed and are correct.

1.7.5 The impact limiters and the shock absorbing covers are correctly installed.

1.7.6 Inspect the cask for any abnormal presence of water or contamination or any other indication that might i

suggest that the cask containment may have been compromised.

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i 1.8 Remove the trunnion impact limiters as follows:

Note:

This step may be done simultaneously with step 1.9 to the extent practicable.

Note:

The lower vertical redundant impact limiter should not be removed until after the front shock absorbing cover is removed.

Required Equipment

-Ratchet

-13/16 inch socket

-Ratchet drive extension 1.8.1 Remove the limiter 9/16" bolt.

Note:

As bolt is removed, manually restrain the trunnion impact limiter (approximate weight of a trunnion impact limiter is 45 lbs).

1.8.2 When the bolt is removed, remove the trunnion impact limiter from the trunnion.

~1.8.3 Inspect the threads of the 9/16" bolt and the trunnion hole.

Apply two layers of waterproof tape over the bolt hole.

1.8.4 Store the bolt and trunnion impact limiter in a clean, protected storage area.

Note:

If storage is made in a contaminated area, the bolts and trunnion impact limiters should be covered with a sheet of plastic or similar covering to prevent I

contamination.

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1.9 Remove the shock absorbing covers per the instructions below and apply two layers of tape over each bolt and alignment pin hole on the rear drum.

Required Equipment

-1/2 ton min. capacity chain hoist

-2 legged sling equipped with appropriate connections for attachment to the chain hoist and to shackles on the shock absorbing cover lift lugs.

-Dynamometer (0-1000 lb. min.)

-2 connecting shackles

-Ratchet

-Ratchet drive extension 7/8 inch socket

-Plastic or Tarpaulin cover (if necessary, see step 1.9.8) 1.9.1 Position the trailer under the crane.

1.9.2 Attach the shackles to the lifting lugs of the shock

_ absorbing cover then attach one leg of the sling to each shackle.

Note:

Either cover may be removed first.

1.9.3 center the crane hook directly over the shock absorbing cover to be handled.

Attach the chainfall then the dynamometer to the crane hook.

1.9.4 Lower the crane hook to permit attachment of the 2 legged sling lifting bale to the crane hook.

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1.9.5 slowly raise the crane hook to take slack out of the sling legs.

All further vertical movement shall be done using only the chain hoist.

1.9.6 Using the chain hoist, lift up on the sling until a reading of 850,+0,-25 pounds is indicated on the dynamometer.

1.9.7 Remove the four shock absorbing cover bolts.

The 2 top bolts should be removed before the 2 bottom bolts.

Store the bolts in a clean, protective container.

Note:

Due to the angle of the covers from the vertical, care should be taken when removing these bolts as the bottom of the rear cover could swing out from the cask when its bolts are removed.

1.9.8 Gently move the shock absorbing cover away from the cask until the cover centering pins are clear of the cask.

Lift the shock absorbing cover using the crane.

1.9.9 Move the shock absorbing cover to its designated storage area and disconnect the shackles from the shock absorbing cover lifting lugs.

If the storage area is dirty or contaminated, Note:

the covers shall be stored on a sheet of plastic or a tarpaulin and covered.

Care should be exercised in handling and storing cover bolts to prevent thread damage.

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1.9.10 Transfer the crane hook and 2 legged sling to the other shock absorbing cover.

1.9.11 Repeat Steps 1.9.2-1.9.9 for the other shock absorbing cover.

1.9.12 Remove the 2 legged sling from the crane hook.

1.9.13 Apply two layers of waterproof tape over bolt ar.d holes in the cask rear face.

1.10 Release front trunnion tie-down, and rear trunnion tie-down per the instructions below:

Required Equipment

-Ratchet

-3/4 inch socket (for trunnion guide assembly bolts) 1/4 inch socket (for rear trunnion bolts) 1/4 open end wrench 1.10.1 Front Trunnions 1.10.1.1 Release the load binder handle restraint chain.

1.10.1.2 Release tension from the front trunnion restraint by lifting up on the binder handle.

Caution:

The handle may rise up suddenly.

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1.10.1.3 Remove the binder attachment hook from beneath the trunnion tie-down support lip.

1.10.1.4 Swing the binder assembly free of the cask trunnion by pivoting around the tie-down rod pivot pin.

Lay the binder assembly on trailer deck.

1.10.1.5 Repeat steps 1.10.1.1 through 1.10.1.4 for the second front trunnion tie-down.

1.10.2 Rear Trunnions 1.10.2.1 Remove the two 3/4 inch bolts and their lock washers from the rear trunnion tie-down.

1.10.2.2 Lift the rear trunnion tie-down collar free of the cask rear trunnion.

Store the bolts, lockwashers, and tie-down collars in a clean, protected area.

1.10.2.3 Repeat steps 1.10.2.1 and 1.10.2.2 for the second rear trunnion tie down.

1.11 Remove trunnion guide assembly as follows:

Required Equipment:

-Ratchet

-3/4 inch socket

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1.11.1 Swing back the front cradle dust cover plate from the underside of the trailer.

1.11.2 Remove the two 1/2 inch hex head bolts and their lock washers.

1.11.3 Remove the trunnion guide assembly from the trailer (this frees the lower redundant trunnion and allows cask removal from the trailer).

Store the bolts, lockwashers and the guide assembly in a clean, protectd area.

1.12 Attach the Primary Lift Beam Assembly to the cask front trunnions per the instructions below.

The lift beam and air controller are shown on Figures 2 and 3.

Note 1:

Visually inspect the major load-carrying welds and critical areas of each cask lift beam for indications of damage as deformation prior to each use.

Note 2:

The major load-carrying welds and critical areas of each lift beam shall be visually inspected by maintenance or non-operating personnel at intervals not to exceed 3 months in length, for indications of damage or deformation.

Note 3:

Do not use a crane hook that will results in a lift beam pin point load, or a line load of less than 4-3/4 inches.

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i 1.12.1 Remove the center (four-inch) pin and/or the two three-inch lifting pins from the lift beam (depending on the site and crane hook, either the primary or secondary beam may be used).

1.12.2 Lower the crane hook between the crossmember plates of the lift beam.

Align the four inch hole in the crane hook with the four inch hole in the lift beam (a sleeve adapter may be required if center hole in crane is greater than 4 inch in diameter).

1.12.3 Insert the four-inch diameter pin and install the keeper plate.

Caution:

The operator is to promptly notify his supervisor of any malfunctions in the equipment.

1.12.4 Connect the air controller to an air supply of 75-125 psig.

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1.12.5 Estimate the maximum distance that the air controller will be from the beam during the intended operation.

1.12.6 Attach as many 50 foot long sections of flexible hose to the three quick connectors on the air controller as needed to achieve the distance estimated.

The hoses and quick connectors are color coded to assure proper connection.

Note:

It may be necessary to disconnect the flexible hose from the lift beam during certain out of pool operations.

1.12.7 Connect the three hoses to the fittings on the right hand side of the beam as one faces the side with the piping.

The hoses, piping and air controller are color coded.

Note:

Be certain the hose connections are fully seated.

A distinct click can be heard when the quick-connectors are properly engaged.

1.12.8 Verify that the bypass toggle valves located on the beams are in the closed position.

1.12.9 Observe whether the lifting arms are in the release or engage position.

Set the arm control lever on the air controller to the same position.

1.12.10 set the red handle of the locking cylinder valve to the " lock" position.

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1.12.11 Depress the black handled toggle valve (labeled

" Flow Reset") on the air controller until a pressure of at least 50 psig is-indicated on the pressure gauge.

Release the toggle to close this valve and activate the automatic cut-off valve in the air controller.

Note:

The valve is designed to cut-off air supply to the system if a leak develops in the hoses, piping or connections.

1.12.12 The system is now operational and shall be operated in the following sequence:

1.12.12.1 set the red handled locking cylinder valve to " unlock".

1.12.12.2 Move the arm positioning lever to the desired position.

1.12.12.3 Visually verify that the arms have moved fully to the desired position.

1.12.12.4 set the red handled locking cylinder valve to " lock".

CAUTION:

Do not attempt to move the arms when the red handle is on " lock".

However, if this should happen, return the arm positioning lever to the position corresponding with the current position of the arms on the beam before moving the red handled locking cylinder valve to " unlock".

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1.12.13 When the system is in the " lock" position, visual confirmation is provided by small metal flags which are mounted on one side of the lift beam.

The flags extend horizontally over the lock pins when the pins are fully extended through the lock plate.

They can be seen from the surface of the pool when the cask is under water.

The lift beam must be oriented on the cask before the cask goes into the pool so that the flags can be observed by the operator.

1.12.14 When changing the lift arm position, wait until the pressure gage indicates line pressure after moving the red handled valve to the " unlock" position.

Then reposition the arms to the desired position.

Note:

The arm repositioning will take longer if the air lines are especially long, air pressure is on the low side, or the system is in the redundant configuration.

1.13 Apply Nuclear Grade Never-Seez grease to lifting shoulder of front horizontal trunnions and to engagement surface of lifting arms.

Engage the lift beam to the trunnions as follows.

1.13.1 With the lift arms locked in the release position, align the lift beam over the cask trunnions.

1.13.2 Lower the lift beam so that the guide arms rest lightly on the trunnion inner tie-down shoulders.

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1.13.3 Unlock the lift arms and move the arm positioning lever on the air controller to the " engage" position.

Verify that the lift arms are positioned properly on the lifting shoulders and there are no interferences with the trunnion lips or tie-down shoulders.

Verify that there is no binding.

1.13.4 Lock the lift arms in the engage position on the cask trunnions.

Lift the cask slowly, approximately (1) inch and observe the crane / lift beam for unusual noises, deformation or indication of improper function.

1.13.5

If no problems are noted, proceed to make the actual cask lift in accordance with approved facility procedures and the instructions below.

. CAUTION:

Verify that the tractor / trailer brakes are set.

If the trailer must be moved during off-loading of the cask, the tractor driver shall be in the cab.

_I f not, the trailer wheels shall be blocked from the front and rear on at least one axle, on both sides.

1.14 Maintain crane and cables in a vertical position over lifting trunnions as cask is tilted to the vertical position as shown on Figure 26.

1.15 Lift the cask off the trailer and remove the trailer from the area.

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1.16 Transfer the cask to the decontamination pit and install the Bottom Protective Cover as the cask is lowered to the pad per the instructions below:

1.16.1 Prior to lowering the cask onto the decontamination pit, place the Bottom Protective Cover onto the decontamination pit.

1.16.2 Lower the cask until its bottom region is approximately 6 inches above the bottom cover.

1.16.3 Manually lift the bottom cover and fit it onto the

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cask rear face (approximate weight 30 lbs).

1.16.4 Attach the cover to the cask by looping the cover attachment cables over the lower cask trunnions and securing them to their attachment point on the bottom cover.

I 1.16.5 Slowly lower the cask onto the decontamination pit.

1.17 Disengage the lift beam and move it from the operations area.

1.18 Remove grease from all trunnions except for areas that come in contact with the lifting arms during handling between the decontamination pad and the pool.

1.19 Apply two layers of waterproof tape over all shock absorbing cover bolt holes of the cask front face.

1.20 Install the top face plastic protective cover.

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2.0 CASK PREPARATIONS FOR UNLOADIRG l

Install the Cask Protective Skitt htound the fir.ned length 2.1 of the cask per the instructions in 2.1.2 below and as shown on Figure 20.

i 2.1.1 Skirt Operat.io$ Precautions Utilize a reinfo ced translucent hose for the 2.1.1.1 skirt Wstep fall and vpnt lines to prov.ide a visible vatsc level indication.

2.1.1.2 Ensure that lighting in thc operaticas area is adequata to allow easy observation of the rater level in th( skirt and &kirt hoses.

2.1.1.3 Reep the skict fill and vent hoses as short as possibic.

Excessive lengths may result in '

interference problems.

The hoees should be s110we0 to hang freely but not allowed to becole entanglec, kicked og bent.

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2.1.1.4 Plan thoroughly prior to lowering the cask into the pool to ensure that immersion times are minimized.

The shorter the immersion time, the less severe the contamination problems incurred and associated decontamination efforts.

2.1.1.5*

Check the skirt condition prior to installation.

Holes, cracks, tears or other leaks shall be patched using a reinforced plastic patch or tra layers of waterproof tape on the inside (cask side).

2.1.1.6 The skirt surface should be thoroughly rinsed 1

prior to immersion in the spent fuel pool.

This will reduce skirt decontamination requirements.

2.1.2 Skirt Installation Required Equipment

-Allen wrench - 3/8 inch

-Crescent wrench (adjustable) l

-Never-Seez grease, or site approved i

equivalent i

-Waterproof tape l

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1 2.1.2.1 Remove the skirt from storage.

Unroll it and inspect it to ensure that condition is acceptable (i.e., no holes, acceptable contamination levels, etc.).

Check condition of skirt accessories, water hoses, connectors "J1" and "J2",

cables, cable tensioners, and screws.

Grease screw threads if necessary.

Note:

Refer to Figures 20 thru 24.

Item numbers in

)

brackets in this section are shown in these figures.

2.1.2.2 Insert the 2 pins (4) of the lower bar into the cask skirt lugs (11) and manually wrap the skirt around the cask utilizing the handles of the upper bar for support (5).

2.1.2.3 Insert the 2 pins (3) of the upper bar into the corresponding holes of J:lue skirt lower bar (2).

Install the 13 screws (22) to close the skirt.

Torque the screws to 5 ft lb.

2.1.2.4 Locate the upper skirt lateral guide (8a) in the cask front drum groove.

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2.1.2.5 Insert one free end of cable into the hole (15) in the right hand rotating drum (14) of the tensioning device.

Refer to Figures 20 and 23.

Lock the cable into place by tightening the cable securing screws (16) to handtight, then tighten an additional 1/4 turn.

Use a socket and ratchet wrench on the cable tensioning nut (19) to rotate the drum in the direction indicated by the arrow in Section AA of Figure 23.

Turn the right hand rotating drum 2 revolutions to take up excess cable.

2.1.2.6 Position the cable as shown in Figure 20 detail 1.

The cable is wrapped between the lateral guide and the cask center.

Wrap the cable once around the cask as shown in Figure 20.

2.1.2.7 Insert the cable under the upper bar (1) and into the drum groove (insert cable in groove shown in Figure 20, detail 1 and Figure 24, detail 1) and wrap the cable around the cask a second time, while carefully positioning the cable in the cask drum groove, inside the lateral guide (towards the center of the cask) as shown in Figure 20, detail 1.

2.1.2.8 Pull the cable taut and check that the cable is correctly positioned in the drum groove.

4 2.1.2.9 Repeat Step 2.1.2.5 for the other cable end and rotating drum.

Turn the rotating drum to take up slack in the cable and check that the cable is still correctly positioned.

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2.3*

Remove the blind flange from opening *B" and measure the radiation level of opening "B"

(

at contact).

Record measurement in the Cask Loading Report (Section 5).

Record the identifying code of the flange.

2.4*

Inspect gaskets and thread of the plugs, replace 0-rings and apply Never-Seez grease to threads if required, prior to storing in a clean, protected location.

List all items that were replaced by spares in the Remarks Section of the Cask Unloading Report (5.0).

2.5*

Measure cask cavity wall temperatures using the F-1 thermocouple, and ambient temperature using a thermometer and record all measurements on the " Cask Unloading Report" (5.0).

2.6*

Remove the blind flange from opening "C" and survey the Record radiation measurement on the " Cask recess.

Unloading Report" (5.0).

Inspect blind flange, gasket and bolts for any abnormalities, such as deformation, galling and thread damage.

Becord the identification code on the Cask Unloading Report (5.0).

Note:

Gasket inspections shall be performed per step 2.17 2.7

• Remove the shield plug from opening "A".

Inspect the gasket, blind flange and bolts.

i Note: When removing or working in the area of shield plug "A",

care should be exercised as radiation streaming may be present.

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Note:

There should be approximately the same amount of cable on both rotating drums to prevent uneven loading.

It may be necessary to loosen the cable and reposition it on the drums.

2.1.2.10 Place a socket and a ratchet wrench on each of the cable tensioning nuts (19) and turn both drums simultaneously in the direction indicated until the cable is under tension.

Push the locking handles (17) down firmly against the rotating drums (14).

Do not over tighten.

Reference Figure 23, 2.1.2.11 Locate the lower lateral guide (8b) in the cask rear drum groove.

2.1.2.12 Repeat steps 2.1.2.4 through 2.1.2.10 for the lower skirt cable tensioner (6) (the cable is placed between the lateral guide and the center of the cask).

2.1.2.13 Install a layer of waterproof tape along the upper and lower edges of the skirt as shown on Figure 20, detail 1.

Tape can also be installed over the upper bar after the screws have been installed.

This reduces skirt water supply requirements for keeping the skirt full while it is in the pool.

2.2 Remove the blind flanges from openings "J1" and "J2" openings, install connections "J1" and "J2".

Torque the three lubricated bolts in each flange to 35 ft-lb proceeding clockwise from the first bolt, then repeat the torquing in a counterclockwise direction.

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i 2.8 Install the CDS in the Cask Filling / Cooling Mode as shown in Figure 10.

Install Connectors "A2",

install the three bolts and torque to 35 ft-lb first sequencing in clockwise direction and then again counterclockwise.

Ensure valve line-up is as shown with valves V-9 open and V-10 closed.

The safety valve connected to the cask through connector "A2' shall be set at 75 psi.

2.9 Initiate cask Cooling as follows:

Note:

Monitor cask cavity temperature using thermocouple installed in "Fl" during filling and circulation of the cask cavity water.

2.9.1 Initiate cooling water flow through the CDS by opening valve V-10.

Set the clean water pressure regulator, PR-1, to a downstream pressure of 25 psig.

Monitor pressure gage G-5.

Pressure should increase to saturation pressure for the cold wall temperature.

Note:

After cask filling has started, the pressure reading on G-5 may increase due to static head.

2.9.2 Continue to fill the cask cavity through connector

• C".

2.9.3 As the cask is filled, monitor cask cavity wall temperatures using the thermocouple installed in well "Fl".

If the average temperature is above 180'F (or lower depending on site requirements) allow the cask to overfill to establish once thru cooling.

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2.9.4 When temperature measurements are acceptable by site criteria, stop the flow of coolant water.

2.9.5 Record the "Fl" temperature reading at the completion of cooldown on the " Cask Unloading Report" (5.0).

2.9.6 Leaving Connector "A2" in place on the cask, drain any filled portions of the overflow line.

Drain the water from the filling assembly attached to the bottom of the cask and remove Connector "C".

2.10 Attach a drain line to Connector "C"

and reinstall Connector "C" to the cask and drain approximately one gallon from the cask.

2.11 Disconnect Connector "C"

from the cask (Hansen coupling at "C"

is self-sealing).

Also remove Connector "A2".

2.12 Install shield plug " A" without bolts.

Note:

Since the shield plug "A" is not torqued, the cask cavity is vented providing thermal expansion protection.

2.13 Loosen and remove lid bolts per the following:

2.13.1 Select one bolt and loosen 1/4 turn.

I 2.13.2 Continue loosening all remaining bolts by 1/4 turn following the numbering sequence shown on Figure 25(A).

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2.13.3 Repeat the loosening of the lid bolts by another 1/4 turn repeating the sequence shown on Figure 25(A).

2.13.4 Upon completion of both 1/4 turn cycles, all the bolts may then be removed.

2.13.5 Inspect removed bolts for damage, store and protect bolts from contamination.

2.13.6 Per site requirements, several bolts may be left installed hand tight until cask is in the pool.

2.14 Remove the front face plastic protective.

2.15 Attach the lid lifting assembly per the following:

2.15.1 Inspect the lid lifting sling for any deformities or obvious damage.

2.15.2 Inspect the lid lifting lugs for cracks or any obvious damage.

2.15.3 Attach the jaw ends of the turnbuckles attached to the lid lifting lugs.

The innermost turnbuckles on the master link shall Note:

be attached to opposite lid lifting lugs.

2.15.4 Carefully lay the lid lifting sling on the cask lid.

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2.16 Remove the thermocouple and reinstall the thermocouple well port plug "Fl'.

2.16.1 One torque wrench equipped with a 1-3/8 inch socket, suitable for setting torques of 35 ft-lb is required.

2.16.2 Install the plug to hand tight, then torque to 35 ft-lb.

2.17* Visually inspect the gasket of the blind flange for opening "C"

to ensure it is free of cuts, grooves, gouges or cracks.

Particular attention should be given to observe

" feathering' at the edges.

An indication of normal conditions will be that the seating surface appears as a somewhat flattened area.

If the inspection indicates a gasket defect, the gasket should be replaced.

(See below)

Records of gasket inspection shall be recorded in the Cask Unloading Report (5.0).

Gasket installation and replacement shall be detailed and recorded in the Report under " Remarks".

2.17.1 Gasket Replacement Instructions 2.17.1.1 Remove old gasket from the gasket groove.

If the gasket is stuck, it may have to be pried from its groove using a gasket removal tool (care should be taken not to damage the gasket seating surfaces).

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2.17.1.2 Clean gasket groove with alcohol (Note:

do not use acetone), wipe dry with a clean cloth and visually inspect the gasket groove to ensure that the surfaces are clean and that no fragments of the old gasket remain.

Break the old gasket to ensure that it does not get reused.

2.17.1.3 Visually inspect the new gasket to ensure it is in good condition.

2.17.1.4 Position the gasket in the groove.

2.17.1.5 Install the gasket by pushing the gasket into the groove at four diametrically opposite points using the thumb (this

" tacking" minimizes the gasket's tendency to stretch during installation).

Continue pushing the gasket into its groove at diametrically opposite points until the entire gasket is installed (.e.g no bulging.)

2.17.1.6 Record this activity in the Cask Unloading Report.

2.18 Remove the port plug from opening "D".

2.19 Reinstall the flanges of opening "C".

Torque each bolt to 35 ft-lb, first sequencing in a clockwise direction then counter clockwise.

Position lift beam over the cask and engage to the two top 2.20 trunnions (see 1.12).

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I 3.0 CASK LOADING Lubricate the lift arm palms and the lifting trunnion outer 3.1 shoulders, bottom side, with a light layer of Never-Seez.

Position the beam over the lifting trunnions and engage the beam to the outer lifting shoulders of these trunnions following instructions in step 1.12.

Lift the cask from the decontamination pit and transfer to 3.2 a position over the pool.

3.3 Attach the fill hose to "J1" when cask is in position over pool.

Connect the clean water supply directly to fill hose as shown in Figure 27. Verify valve V-14 is open and valve V-12 is closed.

3.4 Lower the cask into the pool while filling the skirt volume with clean water such that the skirt internal volume water 1evel is maintained approximately 6 to 18 inches above the pool water surface.

As the cask is lowered slowly feed the fill hose into the pool and continue to spray the surfaces with clean water.

Reduce crane speed and water flow rate as skirt water level 3.5 ar.proaches the top of the skirt.

3.5.1 Reduce the water supply, if necessary, so that the remainder of the skirt cavity fills slowly to displace the air still contained therein.

As the skirt water level disappears from sight, reduce the water pressure by throttling valve V-ll.

It may be necessary to lower the cask in small increments to try and maintain the skirt water level within 6 to 18 inches above the pool water level.

27

3.5.2 When the "J2" connector is within 6 in. to 1 ft from the pool water surface, stop lowering the cask until water is observed flowing from the 'J2' connector.

3.5.3 Slowly feed the remaining fill hose into the pool such that the water level in the hose is slightly above the pool level. This will assure that no air gets trapped in the hose.

Attach a tag line to the reservoir tank and lower it till the bottom 6f the tank is about 12 inches above the pool water level.

3.5.4 Open valve V-12 and close valve V-14.

Note: Valve V-14 may be opened and closed by using a tag line of pole with a loop on the end.

3.5.5 Throttle valve V-11 to set and maintain a reservoir tank water level of approximately 6 to 18 inches above the pool water level.

3.6 Continue to lower the cask.

Maintain approximately 6 to 18 inches of water head over-pressure inside the skirt above pool water level by maintaining an adequate water level in the water reservoir tank (see Figure 27).

3.7 As the cask front face approaches pool side, remove any remaining lid bolts and store them properly.

Continue lowering the cask to the bottom of the pool at 3.8 normal crane speed while continuing to maintain the 6 to 18 inches of water over-pressurization in the level / reservoir tank.

28

3.9 Gently place the cask on the spent fuel pool shelf.

3.10 Attach the Crane Hook Adapter as follows, 3.10.1 Slowly lower the lift beam until the guide arms are resting on the trunnion inner choulders.

3.10.2 Release the lifting arms from the trunnions.

3.10.3 Remove the lift beam from the pool while spraying it with clean water.

3.10.4 Place the lift beam on its storage stand and remove the 4 inch pin.

3.10.5 Position the crane hook between the plates of the crane hook adapter and insert the pin.

Install the keeper plate to the pin and tighten to wrench tightness.

3.10.6 Slowly raise the crane hook adapter while inspecting it for cracks deformations or other irregularities.

3.10.7 Position the crane hook adapter between the plates of the lift beam and insert the pin and keeper plate.

3.11 Raise the lift beam and crane hook adapter to a position above the cask.

3.12 Engage the lift beam to the cask front trunnions.

29

3,13 Using a special pole with a hook on the end, attach the master link of the lid lifting sling to the hook of the crane hook adapter.

I 3.14 Slowly raise the cask and position it over the cask unloading area.

3.15 Lower the cask to the floor of the cask unloading area while maintaining the water level in the skirt fill tank.

3.16 Remove the cask lid as follows:

3.16.1 Lower the lift beam until the guide arms are resting on the lifting trunnions.

The lift beam should be vertical.

Release the lifting arms from the trunnions.

3.16.2 Slowly raise the lift beam.

As the slack is taken out of the lid lifting slings, visually verify that the top surface of the lid is level as it is lifted from the cask cavity.

Gently lift the lid out of the cask cavity.

Note:

If the lid shows signs of binding, lower the crane hook until the cable is slack and carefully check the crane hook vertical alignment over the lid center and adjust as necessary.

Repeat steps 3.16.1 and 3.16.2 as needed.

Record any findings in the Remarks Section of Form 7 3.16.3 Once the lid is free, continue lifting in normal speed until it has been lifted approximately 4 feet.

This provides clearance for lid removal.

3.16.4 Remove the lid from the operations area.

30

3.16.5 Move the lid to its storage area.

If the lid is to be removed from the pool, spray all crane cables, the crane hook, lift beam and lia with clean water as they surface.

Note:

Lid should be stored on a support cradle so that there is no damage to the lid barrier gasket or the sealing gaskets RlA and RlB.

3.16.6 Position the crane as needed for further cask operations.

3.16.7 Inspect the lid 0-Rings per steps 2.17.

3.17 Install the Front Face Protective cover per the instructions below (see Figure 19).

3.17.1 Attach a tag line to each cover cable.

3.17.2 Orient the cover over the lid recess area such that the 2 lid centering pins are in alignment with the.

bosses of the cover.

3.17.3 Lower the cover onto the cask until it is fully down (i.e. slack cable).

The cover is designed such that the edges of the cover will center it correctly.

3.17.4 Visually verify that cover is correctly installed (i.e. lying flat on the front face and correctly oriented).

3.17.5 If the cover position is not correct, slowly lift the cover clear using the tag lines, adjust its position as needed by rotating and repeat steps 3.17.3 and 3.17.4.

31

3.17.6 Using the tag lines, position the cables such that they hang along the side of the cask and are out of the way of fuel loading operations.

The arrangement of the cask should be as shown in Piqure 27.

3.18 Unload the fuel assemblies from the cask cavity per the instructions provided below, Record the position of each fuel assembly in the " Cask Unloading Report" while verifying the position and identification of the assemblies by identification number from the " Cask Loading Report" which accompanied the cask shipment.

Notes:

1. If operating problems occur such that the binding procedure in section 3.19 of this chapter is utilized, information on the problem should be provided in the

" Cask Unloading Report" (Section 5.0) under " Remarks".

2. Any lateral position adjustments of the fuel handling tool must be done with the fuel assembly disengaged from the fuel handling tool during unloading operations (unless otherwise specified in these instructions).

3. It is recommended that reference height indications be marked on the fuel handling equipment such that they can be used to assist in determining fuel assembly heights.

4. During all fuel transfer operations performed in the pool, ensure that the fuel assemblies are free of all obstacles throughout transfer.

32 l

Required Equipment

- Fuel handling tool to be supplied by the site.

- Crane facilities to be supplied by the site.

Crane hook should be able to be rotated.

3.18.1 Attach the fuel handling tool to the craae hook.

3.18.2 Transfer the fuel handling tool to a point directly over the fuel assembly to be unloaded from the cask.

3.18.3 Lower the fuel handling tool until it is about 3 feet above the cask front face.

3.18.4 Verify that the fuel handling tool is centered over the desired fuel assembly.

If it is not, adjust its position as needed.

Ensure that the fuel handling tool is free of any obstacles during these adjustments.

3.18.5 When alignment is satisfactory, slowly,begin lowering the fuel handling tool onto the fuel assembly.

If further adjustment is needed, this should be done with the fuel handling tool above the cask fuel compartment.

No lateral adjustment should be made with the tool in a fuel compartment.

3.18.6 Continue lowering the fuel handling tool until it is completely down on the fuel assembly (i.e. slack cable indication).

33

3.19.1 Stop removal of the fuel assembly.

Release excessive tension in the fuel handling crane cable by lowering the crane hook in the jog mode.

3.19.2 If assembly is not binding and free to be lowered, lower the fuel assembly in the jog mode until the assembly is in the full down position.

3.19.3 If assembly is binding and cannot be lowered, carefully move the fuel handling tool slightly back and forth (laterally) in a " rocking" motion.

Perform this step in combination with lowering the assembly in a jog mode until the fuel assembly is in the full down position.

3.19.4 Disengage the fuel handling tool from the assembly and raise the fuel handling tool such that it is clear of the cask front face.

3.19.5 Attempt to repeat fuel unloading operations starting at step 3.18.5.

If the_ assembly still indicates binding, a thorough review of the problem should be made.

If it is decided that the fuel assembly must be removed, this should be done by carefully performing step 3.19.3.

3.20 Check and grease (using Never-Seez) the threads of all removed cask bolts and screws as needed.

3.21 Upon completion of cask unloading, remove the Front Face Protective Cover.

35

3.22 Replace the cask lid onto the cask per the following instructions:

3.22.1 If the cask lid and/or lift beam have been removed from the crane hook, reconnect them.

Attach one tag line to each end of the lift beam.

3.22.2 Transfer the lid to a position directly over the cask cavity lid seating surface.

Establish correct lid orientation using the orientation marks and lower the lid to a height of about 4 feet above the cask front face.

Adjust the vertical alignment and orientation as needed.

Note:

This alignment is critical and should be done carefully.

Angular orientation shall be established by lining up the cask and lid orientation marks prior to installing the lid.

The lid should be rotated as needed.

3.22.3 Slowly lower the lid into the lid recess.

Note:

Lateral and rotational adjustments of the lid may be made as the lid nears the cask front face but no lateral movement of the crane should be made once the lid has entered the lid recess.

If further lid position adjustments are needed, the lid should be lifted until it is free of the lid recess and above the cask.

36

3.22.4 If the lid indicates significant binding during crane descent, slowly raise the lid in the jog mode until it is again free of binding and raise the lid out of the lid recess.

Check the lid alignment and repeat steps 3.22.2 and 3.22 3.

3.22.5 As the lid nears its full down position, ensure that the 2 centering pins are protruding through their respective lid flange holes.

3.22.6 If they do not protrude, stop crane descent.

Slowly raise the lid a few inches.

3.22.7 Twist the crane hook in whichever direction is needed by referencing the lid orientation marks.

Return to step 3.22.3 and continue lid installation.

3.22.8 Continue lowering until the lid is fully down as indicated by slack cable in the sling cables.

Visually verify the lid for proper installation.

The alignment pins should protrude from the lid plate.

3.24 Attach the lift beam to the cask front trunnions (see 1.12).

3.25 Raise the cask to the pool shelf and check that the lid is properly seated by surveying the lid seating area for radiation streaming.

Wash down any exposed cask, lift beam and crane hook adapter surfaces using a clean water spray.

3.26 Using a pole with a hook on the end, disconnect the lid lifting system from the crane hook adapter.

37

3.27 Disconnect the lift beam from the cask front trunnions and position it on its storage stand.

3.28 Disconnect the lift beam from the crane hook adapter.

3.39 Position the crane hook adapter on its storage stand and remove the pin.

3.30 Reconnect the lift beam to the crane hook in accordance with step 1.12.

3.31 Attach the lift beam to the cask front trunnions.

3.32 Raise the cask from the pool in accordance with the following steps.

3.33 Spray the crane hook adapter with water as it is removed from the pool.

3.33.1 As the cask is removed from the pool, the water inlet flow shou,1d be reduced and finally stopped as the top of the skirt surfaces from the pool, stop raising the cask and disconnect the fill hose from the clean water supply so it can be used as a drain hose. The drain hose should be lowered and tied off at a height of no more than 6 inches above the pool water level.

Open valve V-14 using a pole with a hook on the end.

Control the crane speed to maintain approximately a 1 to 2 foot skirt overpressure while raising the cask.

Record the total time the cask was in the pool in the cask Loading Report.

38

3.34 As soon as practicable, remove water from the bolt holes using an aspirator and install two or more lid bolts to hand tight, as required by the facility.

3.35 slowly remove the cask from the pool while thoroughly washing down the top, skirt and base of the cask with a clean water spray to remove particulate and soluble contaminants.

3.36 When the cask and skirt are acceptably dry, disconnect hose connection "J1" at the fill line and transfer the cask to the decontamination pad.

Dry all surfaces with clean rags.

Note:

Do not remove the skirt until all required external cask decontamination operations are complete.

Removal of the skirt prior to the completion of these steps risks contamination of the cask fins.

3.37 Skirt Operation Precautions 3.37.1 The skirt surface should be thoroughly rinsed as the cask is removed from the pool.

If this is done, extensive skirt decontamination is not normally required.

3.37.2 The skirt should not be left installed for extended periods of time after a loaded cask has been removed from the pool.

The skirt decreases the fin heat dissipation capacity.

If loaded with the maximum 23.5 kW decay heat load a time limit of 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> shall be imposed for these conditions.

For cases of fuel with lower residual heat, this time period may be extended if cask cavity temperatures should be carefully monitored.

Excessive temperatures may necessitate skirt removal.

39

3.38 Disconnect the lid lifting system from the cask lid.

3.39 Disengage the lift beam and move it out of the operations area (see 1.12).

4.0 PREPARATION OF THE CASK FOR DEPARTURE 4.1 Install the plastic protective cover on top of the cask.

4.2 Install CDS in cask draining mode (Figure 11). Remove shield plug

'A".

Drain approximately 10 gallons.

4.3*

Remove water from bolt holes using an aspirator and install remaining lid bolts and tighten all lid bolts to the specified torque per the instructions below.

Verify that port plug "D" is removed.

Required Equipment: One torque wrench suitable for setting torques of 40 and 290 ft-lb, equipped with a 1-7/8" socket and drive extension.

4.3.1 Install all bolts and tighten to hand tight.

4.3.2 Tighten bolts to 40 ft-lb following the numerical sequence as shown in Figure 25.

4.3.3 Tighten all lid bolts to the final required torque of 290 +10,-0 ft-lb by following the numerical sequence used in step 4.4.3.

Repeat torqueing to ensure proper tightness.

4.4 Remove shield plug from "A".

40

1 Assemble the cask in draining mode as shown on Figure 11.

.j 4.5*

Drain the cask cavity of remaining water in accordance with f

the following steps.

4.5.1 Drain the cask to the liquid Radwaste drain or the spent fuel pool.

4.5.2 Upon completion of cask draining, disconnect the drain line and install the drain bottle in drainage verification mode as shown in Figure 6B.

4.5.3 Disconnect the "C" connector and reconnect it to verify that the Hansen Plug valve is not clogged.

4.5.4 If a substantial amount of water is observed flowing into the bottle, disconnect the "C" connector and reinstall the drain lines.

4.5.5 Repeat steps 4.5.2 thru 4.5.4 as necessary until the cask is completely drained.

4.6.6 Upon completion of cask draining, record the time on the Cask Loading Report (Section 8.0).

the "C" 4.6

• Upon completion of the cask draining, disconnect connector from the cask and remove the drain hose.

Reinstall shield plug "A" and torque bolts to 35 ft-lbs in

a. clockwise direction from the first bolt.

Repeat the torquing of the bolts to 35 ft-lbs in a counter clockwise direction.

4.7 Remove the tape and plugs from the cask front face bolt holes.

41

Check external contamination of all exposed surfaces of the 4.8 cask and decontaminate as required.

4.9 Remove the protective skirt as follows:

Note:

Do not remove the skirt until all required external cask decontamination operations are complete.

Removal of the skirt prior to the completion of these steps risks contamination of the cask fins.

4.9.1 Remove connectors "J1" and "J2".

4.9.2 Remove any remaining tape from the upper and lower skirt edges and unwrap the tensioning cables, freeing the skirt from the drum grooves.

4.9.3 Remove the 13 screws from the upper and lower skirt bars. (Note:

Remove the bolts from bottom to top).

4.9.4 Check that both the upper and lower lateral guides are free of the drum grooves.

4.9.5 Remove the skirt from the cask using the skirt handles (5).

4.9.6 Check the skirt contamination level.

Decontaninate if necessary until acceptable levels are attained.

Normally, washing the skirt with clean water and a soft cloth is sufficient to decontaminate the skirt.

4.9.7 When the skirt surface is dry, wrap the skirt around its lower bar (2) and store it in its storage area.

42

S The skirt should be stored in a. clean area Note:

to avoid cor,tamination or damage.

4.10* Survey the cask / skirt joints now exposed and the finned surfaces of the cask for contamination an'd decontaminate as required.

Reinstall flanges "J1' and "J2" and torque 3/8" hex head bolts to 35 ft-lb.

e#

4.11 Grease'the surfaces of the lift beam arms, outer front trunnion shoulders and rear trunnion inner shoulders with Never-Seeze.

4.12 Reengage lift beam arms and lift the cask off the decontamination pitand remove the Bottom Protective cover per the-following inctructions:

4.12.1 Disconnect the bottom cover attachment cables from the cask trunnions and fold them to the side of the cover so they are not in the way.

4.12.2 Slowly lift the cask from the decontamination pit.

As the cask is lifted, remove the bottom cover from the cask.

4.12.3 Check.the bottom cover for contamination.

Decony.aminate as needed.

J e' 4.12.4 Transfer,the cover to its dtorage. area.

4.13 Remove tape from alignment pin and bolt holes and survey for removable contamination and decontaminate the rear cask face as required.

4.14 Grease rear trailer trunnion supports with Never-Seez grease.

43

Install a set of shims in the rear trunnion supports and 4.15 apply a layer of Never-Seez grease.

i 4.16 Lower the cask bottom trunnions onto the trailer rear trunnion supports.

Cask should be lowered on trailer such that drain

'C' faces upward, after tilting into a horizontal position.

Maintain crane and crane cables in a vertical position over lifting trunnions as cask is rotated to horizontal.

Disengage the lift beam and return to storage stand.

4.17 Perform contamination survey required by 4.21 on cask surfaces inaccessible after shock absorbing cover and impact limiter installation.

4.18 Perform rear trunnion, front trunnion and trunnion guide assembly tie-down operations per the following instructions:

Required Equipment

-Ratchet

-3/4 inch socket (front trunnion guide assembly bolts)

-13/16 inch socket

-Torque wrench (suitable for setting torques of 30 and 125 ft-lbs) 1/4 inch open end wrench

-Ratchet drive extension i

4.18.1 Install the rear trunnion tie-down as follows:

4.18.1,1 Place the trunnion tie-down collars over the rear trunnions.

4.18.1.2 Install the two 3/4 inch bolt.s (with their lock washers) to hand tight.

44

Notti Snmare that the bolt threads contain an acceptable grease coating.

Ensure that the bolt lock washers are installed.

4,18.1.3 Install the rear trunnion support bolts and tighten each to a torque of 125 ft-lb.

Repeat for second reat trunnion.

I 4.18.2 Install the rear trunnion tie-down as follows:

4.18.2.1 Swing the binder assembly over the cask trunnion.

4.18.2.2 Verif'f that the collar is correctly 9

positioned on the trunnion inside shoulder.

The position of the collar should be such that it restrains the top half of the trunnion shoulder.

If necessary, adjust the collar position by performing step 4.18.3.

4.18.2.3 With the binder handle in the up position, engage the binder attachment hook under the trunnion tie-down support lip.

4.18.2.4 Push the binder handle down to the full down position.

Verify that the collar is tight against the cask trunnion.

If it is not, adjust the tie-down assembly by performing step 4.18.3.

45

(

4.18.2.5 Lock the binder in its down position by securing the binder handle restraint chain in the trailer chain securement hook.

4.1B.2.6 Repeat steps 4.18.2.1 through 4.18.2.5 for the second front trunnion.

4.18.3 If necessary, adjust the tie-down collars as follows 4.18.3.1 Using a 1-1/8" open end wrench, loosen the two jam nuts above and below the turnbuckle.

4.18.3.2 Release the load binder handle and adjust the collar as needed.

4.18.3.3 Position the tie-down assembly over the trunnion and verify that the adjustment is correct.

4.18.3.4 Lock the binder handle in its down position and install the jam nuts.

4.18.3.5 Tighten the jam nuts wrench tight against the turnbuckle.

i 4.19 Replace the trunnion impact limiters and trunnion guide assembly as follows:

l f

46

Required Equipment

-Ratchet

-13/16 inch socket

-3/4 inch socket (front trunnion guide assembly bolts)

-Torque Wrench suitable for setting torques of 30 ft-lb

-Ratchet drive extension 4.19.1 Impact Limiter Installation 4.19.1.1 Manually position the trunnion impact limiter on its respective trunnion.

Note that trunnion impact limiter without gussets (4B) is to be installed on the downward facing (in relation to trailer) redundant trunnion (Figure 1).

4.19.1.2 Install the 9/16' bolt which attaches the limiter to hand tight.

4.19.1.3 Tighten the 9/16" bolt to a torque of 30 ft-lb.

4.19.1.4 Repeat steps 4.19.1.1 thru 4.19.1.3 for the remaining impact limiters to be installed.

4.19.2 Trunnion Guide Assembly Installation f

4.19.2.1 Swing back the trailer front cradle dust l

cover plate.

4.19.2.2 Install the trunnion guide assembly f

around the cask bottom trunnion.

47

Note:

It may be necessary to transfer some shim plates from one side of the trunnion guide assembly to the other side so that the guide assembly fits easily and snugly around the trunnion.

Do not leave any shims out.

4.19.2.3 Install the two 1/2" bolts with their lock washers.

Note:

Grease the bolt threads as needed prior to installation.

4.19.2.4 Torque the two 1/2" bolts to a torque of 30 ft-lbs.

4.20 Replace the shock absorbing covers per the following instructions. The weight of each cover is approximately 870 lb.

Required Equipment

-2 legged sling equipped with connections to allow attachment to the lifting crane hook (bale) and to the cover connecting shackles (loops, etc.).

-2 connecting shackles

-Ratchet

-Ratchet drive extension 7/8 inch socket

-Torque wrench suitable for setting torques of 40 and 290 ft-lbs.

l l

l l

l l

48

i 4.20.1 Attach the 2 legged sling to the 2 lifting lugs of the shock absorbing cover by means of the 2 connecting shackles.

4.20.2 Center the crane hook directly over the shock absorbing cover to be handled.

There is no preference in the shock absorbing cover installation sequence; either may be installed first.

Lower the crane hook to a height of approximately 2 feet above the cover.

4.20.3 Attach the 2 legged sling lifting bale to the crane hook.

4.20.4 Slowly raise the crane hook until the sling legs are taut.

4.20.5 Transfer the shock absorbing cover to its respective end of the cask.

Note:

The shock absorbing covers are not interchangeable.

4.20.6 Lower the shock absorbing cover such that its centering pins are in alignment with the cask from drum alignment pin holes.

4.20.7 Install the cover by slowly moving the cover toward the cask face, care should be taken to ensure that the alignment pin holes are aligned correctly and the covers remain vertical during installation.

It is recommended that a dynamometer be used to ensure that excessive force is not applied to the bolts.

49

4.20.8 Install the four shock absorbing cover bolts and torque them as follows:

4.20.8.1 Install all cover bolts and tighten to hand tight.

4.20.8.2 Tighten all bolts to 40 ft-lb in the following fashion (a) Following the numerical sequence shown in Figure 25(b), tighten the bolts to 40 ft-lb (b) Repeat the cycle until all bolts are torqued to 40 ft-lb 4.20.8.3 Tighten all cover bolts to the final required torque to 290 ft-lb by following the procedure in 4.29.8.2(a) and (b).

4.20.9 Lower the crane hook until the 2 legged sling,

cables are slack.

4.20.10 Remove the shackles from the shock absorbing cover and transfer the crane hook and 2 legged sling to the other cover.

4.20.11 Repeat steps 4.20.1 to 4.20.10 for the other shock absorbing cover.

4.20.12 Store the 2 legged sling, connecting shackles and hand tools.

50

4.21* Perform a cask and trailer contamination survey, recording f

the results on Form 3, " Cask Transport Radiation Survey" and Form 4, " Trailer Departure Radiation Survey", as applicable.

Decontaminate as required to meet allowable levels for transport.

Complete and retain the forms for documentation requirements.

Note:

DOT considers a contamination level significant, if when averaged over 300 square centimeters of any part of the package surface, it exceeds 2

10-4 Ci/cm (220 disintegrations per second

-5 per square centimeter) for beta-gamma and 10 Ci/cm (22 disintegrations per second per square centimeter for alpha).

(49 CFR 173.397).

4.22* Install the security seals to the shock absorbing covers per the instructions below and record the seal numbers on the " Cask Unloading Report" (5.0).

Required Equipment

-(2) Security seals (Type E seals or equivalent Jind their corresponding wire

-pliers 4.22.1 Install the security seal wire through the two holes of the shock absorbing cover bolt boss and through the top section of the security seal.

4.22.2 Pull the wire taut, tie it in a secure knot and twist the wire.

The wire thus seals the bolt boss.

51

Note:

The wire should be taut to ensure that the shock absorbing cover bolt cannot be removed without breaking the security seal.

4.22.3 Trim the twisted ends of the wire and place them in the bottom section.

Install the security seal top section onto its bottom section.

4.22.4 Using pliers, squeeze the security seal top and bottom sections such that the security seal is locked.

The shock absorbing cover bolt hole is now sealed.

The bolt cannot be removed without breaking the security seal wire.

4.22.5 Repeat steps 4.22.1 through 4.22.4 for the other shock absorbing cover.

4.23 Attach the required regulatory labels to the cask.

4.24* Perform a final cask inspection and verify that:

4.24.1 The cask appears to be in good condition.

4.24.2 All tie-downs are secure (i.e. no loosening of bolts / tie-downs).

4.24.2 There is no water leakage or bubbling that could indicate a failure of the cask containment system.

4.24.3 The impact limiters and shock absorbing covers are correctly installed and the bolts are torqued properly.

52

}

i 4.25 Install the trailer protective enclosure as follows 4.25.1 Install any roller track sections and posts, if they were removed to position the cask or cover onto the trailer.

4.25.2 Install the trailer protective enclosure by sliding the enclosure rearward by having one man on each side of the trailer grasp the side section of the tarpaulin and pull it towards the rear of the trailer.

Slide the enlosure until the tarpaulin is fully extended and the lock pins are engaged.

4.25.3 Release the back section of the tarpaulin by unbuckling the straps which fasten it to the tarpaulin roof section.

Allow it to unroll.

4.25.4 Pasten the rear tarpaulin section to the enclosure sides by buckling the straps along both sides of the rear tarpaulin section.

4.25.5 Tie-down the side tarpaulin walls of the protection enclosure by pulling the elastic tie-downs over the trailer tie-down hooks.

Ensure that they are taut and firmly restraining the tarpaulin at all tie-down points.

4.25.6 Verify that no air vents of the protective enclosure are obstructed (e.g. snow, etc.).

4.26 Verify that trailer placards read " Radioactive".

4.27 Complete and sign the " Cask Unloading Report" (5.0).

53

4.28 Provide all required shipping documents and a copy of the

" Cask Unloading Report" to the carrier.

The description on the shipping paper for an empty packaging containing residue of radioactive meaterial may be listed as

" Empty-Last Contained Radioactive Material, Fissile".

4.29 Release the package for transport.

5.0 CASK UNLOADING REPORT 5.1 Purpose The purpose of the cask Unloading Report is to record and document certain observations made while the TN-8L cask is at a facility to unload spent fuel assemblies.

In particular, the report covers the measurements which are mandatory upon arrival and prior to departure of the cask.

The report also identifies the fuel which is unloaded and records and documents the observations and measurements which are taken to assure safety.

5.2 Instructions 5.2.1 The Cask Unloading Report shall be completed in sequence as the various radiation, temperature and pressure measurements are required to be recorded.

Other observations and data shall also be recorded as detailed in the report.

5.2.2 The corresponding procedural steps of the Unloading Procedure (Chapter V) are provided in parenthesis for convenience.

54

5.2.3 If additional remarks or explanatory comments are necessary, they should be recorded in the " Remarks" i

section of this report and the applicable procedural step should be referenced.

5.2.4 The person (s) responsible for supervising cask unloading operations and for ensuring proper data collection and recording, shall date and sign the report upon completion of all cask unloading operations, as described in Chapter V.

If several individuals are responsible, all should sign the report and indicate what steps of the " Cask Unloading Procedure", Chapter V, they witnessed or recorded.

M 55

FORM 7 - TN-8L CASK UNLOADING REPORT Facility:

Package Identification:

Unloading Identification Number:

Date:

Carrier:

Time of Arrival:

1.0 CASK RECEIPT 1.1 Verify all shipper's documentation transmitted by the carrier has been turned over to the appropriate receivers 1.2 Verify that all appropriate shipper's documentation has been reviewed and that all comments have been noted 1.3 Visually inspect cask and trailer to check for damage or other irregularities.

Record any deficiencies in the Remarks SEction.

1.3.1 Verify cask tie-down is acceptable 1.3.2 Record the type:

and number:

of the regulatory labels on the cask.

1.3.3 Inspect the cask for any abnormal presence of water, bubbling or contamination.

1.3.4 Verify that all Impact Limiters and Shock Absorbing covers are properly installed 56

1.4 Complete Forms 1 and 2.

a)

Maximum dose rate at cask surface:

Beta, gamma (

):

mrem /h location:

b)

Maximum dose rate at 2m (6') from cask surface:

Alpha, beta, gamma (

):

mrem /h location:

c)

Maximum dose rate at trailer surface:

Alpha, beta, gamma (

):

mrem /h location:

d)

Maximum removable contamination of the cask:

Alpha, beta, gamma (

):

dpm/100cm2 location:

e)

Maximum removable surface contamination of the trailer:

Alpha, beta, gamma (

):

dpm/100cm2 location:

Note:

Attach Radiation and Contamination Forms 1 and 2 to the Report.

1.5 Maximum cask surface temperature:

a)

'F b)

Location:

1 1.6 Record the two Security Seal Numbers and verify that they have not been tampered with.

Verify that the numbers agree with the shipping papers.

a)

Front:

b)

Rear:

57

2.0 CASK PREPARATION 2.1 Verify inspection of gaskets of:

a) blind flange "C" b) shield plug "A"

Note 1:

Indicate in the Remarks section if there was any difficulty when removing any of the blind flanges.

2.2 List all cask parts replaced by spares in the Remarks section.

2.3 Inspect the protective skirt and skirt assembly.

Record any abnormalities or irregularities of operation in the Remarks section.

3.0 FUEL UNLOADING 3.1 Indicate any difficulties in lid removal in the Remarks section.

3.2 Record fuel data as listed on the Fuel Information Sheet.

3.3 Record time at completion of unloading:

3.4 Verify fuel assembly position in the cask by identification numbers and record below (see cask Loading Report).

4.0 PREPARATION OF CASK FOR TRANSPORT 4.1 Record time at completion of cavity draining:

4.2 Record the total in-pool time of the cask 4.3 Record the temperatures measured by the thermocouple inserted into the thermocouple well "Fl",

and the ambient air temperature following the completion of cask draining:

58 i

a)

Fl:

'F b)

Ambient:

'F c)

Date:

d)

Time:

4.4 Record the final torque values for the cask, a)

Lid ft-lbs b)

Blind Flanges:

"A" ft-lbs "C"

ft-lbs "J1" ft-lbs "J2" ft-lbs c)

Plugs:

"D" ft-lbs "Fl" ft-lbs 5.0 CASK DEPARTURE 5.1 Record the dose rates measured as detailed below; a)

Maximum dose rate at cask surface:

(1) beta, gamma, (

):

mrem /h location:

(2) neutron (n'o):

mrem /h location:

b)

Maximum dose rate at 3 feet from cask surface:

(1) beta, gamma, (

):

mrem /h location:

(2) neutron (n'o):

mrem /h location:

59

c)

Maximum dose rate at vehicle outer surface:

(1) beta, gamma, (

):

mrem /h location:

(2) neutron (n'o):

mrem /h location:

d)

Maximum dose rate a 6 feet from vehicle:

(1) beta, gamma, (

):

mrem /h location:

(2) neutron (n'o):

mrem /h location:

e)

Maximum dose rate in any normally occupied position of the trailer / cab:

mrem /h Note: Attach Radiation and Contamination Forms 3 and 4.

5.2 Record the maximum removable surface contamination measured on the cask:

2

(

)

dpm/100cm

location 5.3 Record the maximum cask surface temperature measured with the hand held pyrometer:

a)

Temperature:

'F b)

Location c)

Date d)

Time 5.4 Record the numbers of the security seals after their installation on the shock absorbing covers:

a)

Front:

b)

Rear :

60 i

5.5 Verify all necessary regulatory labels and placards required for transport are properly installed.:

5.6 Visually inspect the cask on the trailer for irregularities in the fins and resin section.

Record any findings in the Remarks section.

5.7 Inspect the cask surfaces for dents, rust and general condition.

Record any findings in the Remarks section.

5.8 Verify that the Regulatory placards are present and are readable.

Record any findings in the Remarks section.

5.9 Visually inspect the cask on the trailer and verify that all impact limiters are installed correctly (i.e.

gussets on horizontal and top redundant trunnions only, proper torquing of bolts.

Record any findings in the Remarks section.

5.10 Visually inspect all cask surfaces for air bubbles or water or bubbling:

5.11 Verify all necessary information has been properly entered on the shipping documentation and that the document has been signed and given to the carrier:

i 61

6.0 REMARKS Inspector:

Data Recorder:

Date of Departure:

Time of Departure:

Responsible Supervisor:

Oll8L 62

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Radiatir.a : survey Form SITE:

SURVEYED BY:

DEPARTURE DATE/ TIME:

(

4 CASK SERIAL NO.

INSTRUMENT:

SURVEY DATE:

i PT Contamination Survey Points dpm/100 1

Front Face - left 2

Front Face - right 3

Lid Surface 4

Front Drum surface - left side

,A 5

Front Drum surface - bottom 1

6' Front Drum surface - right side l~~~~~25~~~~l 7

Front Drum surface - top l

8 Left Trunnion / Impact Limiter 1

3 2

9 Right Trunnion / Impact Limiter 10 Bottom Redundant Trunnion / Impact Limiter (5

139 11 Top Redundant Trunnion / Impact Limiter 4

11( DM 4

12 Fins - bottom front I-R 8

13 Fins - top front n2) 14 Fins - right side front 3

14 15 Fins - left side front 16 Fins - bottom rear 17 Fins - top rear 18 Fins - right side rear 19 Fins - left side rear G

c 20 Left Rear Trunnion / Impact Limiter l

I 21 Right Rear Trunnion / Impact Limiter 22 Rear Drum surface - left side 23 Rear Drum surface - right side 24 Rear Drum surface - bottom 17 25 Rear Drum surface - top 19 (16) le 26 Rear Drum base surf ace - center l

27 Rear Drum base surface - left F

3 28 Rear Drum base surface - right (24) 25 21 29 Front Shock Absorbing Cover (inside) i MQ 22 30 Front Shock Absorbing Cover (outside) 25 27 24 as 31 Rear Shock Absorbing Cover (inside) 32 Rear Shock Absorbing Cover (outside) i 8

1 - - -

31----

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32 Radiation Levels (mrem /hr)

E at contact 3'

from surface 6'from surface i

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STIE:

SWVEYED BY:

DEPARIURE DATE/ TIME:

INSTRLMENT:

SURVEY DATE/ TIME:

, VEHICLE NO.

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(

front 6 Trunnion Support l

back 7 Trunnion Support 8 Trunnion Support - back 9 Tarpaulin i

10 Trailer Beam i

11 Trailer Beam

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12 Front Deck Plate 13 Front Deck Plate 14 nma w sim+.

15 Tire marfacar

Form.1 Cask De_

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• Radiation Survev* Form SITE:

SURVEYED BY:

DEPARTURE DATE/ TIME:

CASK SERIAL NO.

INSTRUMENT:

SURVEY DATE:

PT Contamination Survey Points dpm/100 1

Front Face - left 2

Front Face - right Fumt 3

Lid Surface 4

Front Drum, surface - left side A

5 Front Drum surf ace - bottom 6

Front Drum surface - right side

!~~~~~5'~~~~l 7

Front Drum surface - top l

8 1 Left Trunnion / Impact Limiter 2

9 Right Trunnion / Impact Limiter 1

3 10 Bottom Redundant Trunnion / Impact Limiter 11 (5

(

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(10)

(

4 12 Fins - bottom front H

B 13 Fins - top front (12) 14 Fins - right side front 3

14 15 Fins - left side front 16 Fins - bottom rear 17 Fins - top rear 18 Fins - right side rear 19 Fins - left side rear c

c 20 Left Rear Trunnion / Impact Limiter 21 Right Rear Trunnion / Impact Limiter 22 Rear Drum surface - left side 23 Rear Drum surface - right side 24 Rear Drum surface - bottom 17 25 Rear Drum surface - top H

06) 18 26 Rear Drum base surf ace - center 27 Rear Drum base surface - left r

a 28 Rear Drum base surface - right 29 Front Shock Absorbing Cover (inside)

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22 25 30 Front Shock Absorbing Cover (outside) 27 26 28 31 Rear Shock Absorbing Cover (inside) i 32 Rear Shock Absorbing Cover (outside)

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7 Trunnion Support - back 8 Trunnion Support - back 9 Tarpaulin l

10 Trailer Beam i

11 Trailer Beam 12 Front Deck Plate 13 Front Deck Plate 14 Fremt u P htm 15 Tire surfam

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Figure 25

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and Impact Limiters e

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5 Trailer Loading / Unloading Operations E

Figure 26 g

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OVERSIZE DOCUMENT PAGE PULLED

~

1 SEE APERTURE CARDS NUMBER OF PAGES:

ACCESSION NUMBER (5):

F? & 0 6 5 0 0 8 %

go o53o oR68 I

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I 1

APERTURE CARD /HARD COPY AVAILABLE FROM RECORD SERVICES BRANCH,TIDC FTS 492-8989 l