ML20059C632

Forwards Generic Model 600 Type B Shipping Package Loading Procedures,Per 900605 Request for Addl Info.Loading Procedures Include Vacuum Drying Procedures.Both Procedures Include Requirements for Bolts

ML20059C632
Person / Time
Site:	07105980
Issue date:	08/31/1990
From:	Cunningham G GENERAL ELECTRIC CO.
To:	Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
NUDOCS 9009050215
Download: ML20059C632 (23)

Text

{{#Wiki_filter:_ GE Nuclear Energy ~ ur:nwne cem L &ctos Nu&w Dmter Ih fNia dhk 1h*0?'3 kJ#j J frV9f!A {4 H${b' August 31, 1990 C. E. MacDonald, Chief Transportation Branch Office of Nuclear Material Safety & Safeguards ' U.S. Nuclear Regulatory Commission Washington, D.C. 20555

References:

1) Certificate of Compliance No. 5980, Docket 71 5980.

2) Applications for Amendment; February 27, 1990, and April 26, 1990.

3) Letter, C. E. MacDonald to G. E. Cunningham; June 5,1990.

Dear Mr. MacDonald:

In response to your recuest for additional information (Ref. 3), copies of the generic loading anc unloading procedures _ for the Model 600 shipping container are attached. The loading procedure includes the vacuum drying procedure. Both procedures include torque requirements for bolts. If you have any further questions, please contact me on (415) 862-4330. Thank you. i Sincerely, G. E. Cunni gham Senior Licensing Engineer /ca Attachments 'l 9009050215 9008^81 'PDR) ADOCK 07105980 C PDC

1 7. ), g ATTACHMENT 1 Generic Model 600 Shionino Packaoe 'Loadino Procedure p-l

i August 10, 1990 I SHIPPING PACKAGE ASSEMBLY / DISASSEMBLY Ceneric Model 600 Tyne B Shineine Packare Loadine Procedure 1. Entpose To provide container users with the recommended procedure for loading the Model 600 shipping container and the preparation of the package assembly for shipment. 2. Scope This procedure establishes the guidelines to be followed for the handling activities associated with the CE VNC supplied shipping package. VARIANCES TO THESE CUIDELINES ARE PERMISSIBLE PROVIDED THEY ARE IN COMPLIANCE WITH THE APPLICABLE REQUIREMENTS OF THE SHIPPING PACKAGE CER'lIFICATE OF COMPLIANCE, THE RECEIVING FACILITY LICENSES, AND DOT /NRC REGULATIONS. Internal facility operating procedures should be followed for the " routine" transfers, move-ments, decontamination, radiation controls, etc. of the shipping package. 3. Special Reauirements A copy of this procedure should accompany or precede the first shipping package sent to a user for receiving and shipping radioactive materials. 4. Soccial Notes a. The protective jacket and the exterior of the shipping cask are free of smearable radioactive contamination when shipped. The package should be return shipped in the same contamination free condition, b. HQ MODIFICATION, REPLACEMENT, REPAIR, OR REWORK TO THE SHIPPING PACKAGE (PROTECTIVE JACKET AND CASK) SHALL BE MADE VITHOUT VRITTEN PERMISSION FROM (CE-VNC) IRRADIATION PROCESSING, PLEASANTON, CALIFORNIA, c. All package components (except product and non returnable product container) must be returned unless otherwise specified by CE VNC. d. A " Type B Shicided Container" diagram is attached and should be used to locate items referenced in the text of this procedure. 1 l 2

c: 't

• August 10, 1990

~, ? i-e. Do NOT attempt to lift the cask by the eye (Item 1) on the cask lid. The eye is for lifting the cask lid only. The cask lid weight is stamped in the lid.

f. -ONLY THE TIEDOWN EYES (ITEM 3) ON THE SIDE OF THE FIRESHIELD ARE APPROVED TO SECURE THE PACKAGE ASSEMBLY TO THE TRANSPORT VEHICLE. TWO ADDITIONAL CHAINS TO SECURE FIRESHIELD PALLET TO VEHICLE ARE RECOMMENDED. OTHER TIEDOWN ROPING, CABLING, OR CHAINING ARRANGEMENT, USING THE TIEDOWN EYES (ITEM 3) MAY BE USED PROVIDING THE SHIPPER PERFORMS AN ENGINEERING ANALYSIS AND EVALUATION.

g. Do HQI lift the protective jacket and cask package assembly by the top rectangular holes (Item 2) on protective jacket. These are only for moving the protective jacket af ter it has been unbolted from the base (pallet). h. The lugs (Item 3) located on the side of the protective jacket are for tie. downs during transport and may be used to lift the entire protective jacket / cask package assembly. 1. The lifting eyes (rectangular holes) on the protective jacket must be secured with the anti. tie.down covers (Item 4) to prevent use as a tie.down system during transport. THE PROTECTIVE JACKET LIFTING EYES l ARE NOT APPROVED TO SECURE PACKAGE ASSEMBLY TO TRANSPORT VEHICLE. l 5. Protective Jacket Disassemb1" a. Use appropriate capacity material handling equipment to place complete package assembly in an area free ~of radioactive contamination. Package gross weight is on the protective jacket nameplate. (Item 5 on attached diagram). p b. Monitor the exterior container surface for radioactive contamination and dose rate with appropriate radiation detection instruments. Notify the Area Supervisor, Nuclear Safety, or other designated personnel if the container surface is contaminated or the dose rate is higher than indicated on the shipping papers, j c. Verify security seal number with shipping documents. Remove the security seal (Item 6 on attached diagram). I h 2 4

] 2 August 10, 1990 i i i d. Unscrew and remove the bolts (Item 7 on attached diagram) from the base of the protective jacket. Use care not to damage or lose the bolts. ALL_THE BOLTS WILL BE REQUIRED FOR REASSEMBLY. e. Carefully lift the protective jacket off the cask, either by using the I rectangular holes (Item 2) on top of the jacket or by using the lug tie. down ears (Item 3) and appropriately rated slings. The protective jacket must be lifted straight up to prevent damage to cask, f. Place the protective jacket in a noncontaminated area or cover to protect from radioactive contamination, g. Monitor the cask dose rate with an appropriate radiation detection instrument. h. Smear the cask surface to check for radioactive contamination. If I contamination is detected, notify Area Supervisor and follow appropriate internal procedures for contamination control and decontamination activities, i. Lift the cask off protective jacket base using the ears (Item 8) on each side of the cask. DO NOT LIFT CASK USING EYE IN THE CASK LID. THE CASK -LID EYE IS AUTHORIZED FOR LIFTING THE LID ONLY. Transport the cask to the-shielded work area. The cask weight is on the cask nameplate. Do j NOT overload the material transport equipment. l 6. Loading Casks - Dry Remote Ooeration l. a. Use appropriate material handling equipment and position the cask on stable foundation in a shielded remote handling facility. Follow appropriate internal procedures for dose rate monitoring and respiratory protection requirements. b. If materials to be loaded-into the cask are free of radioactive contamination - sealed source container; special form containment, etc.:

1) Before removal of the cask lid, be sure that all remote handling tools to be used are as free of contamination as the item (s) being loaded.

2) Remove the cask lid bolts (Item 9).

Place the bolts in a convenient-location so they are not lost, damaged, or contaminated. ALL THE BOLTS WILL BE REQUIRED FOR REASSEMBLY. 3 ___,_._m y

August 10, 1990 3, t t

3) Use an appropriately rated lifting device to remotely remove the cask lid.

The cask lid voight is stamped on the lid. 4) Smear the cask cavity for radioactive contamination. Clean to the required levels per appropriate internal procedures.

5) Check the cask drain line. Remove previous thread sealant and apply Teflon tape or other thread sealant to the drain plug threads.

Replace the drain plug and tighten.

6) Visually check the gasket and cask and lid sealing surfaces for cuts, nicks, tears, ragged edges or other defects that could adversely affect the sealing ability of the gasket.

7) Visually inspect the cask lid bolts for obvious damage.

IF ANY COMPONENT OF THE SHIPTING PACKAGE REQUIRES REPAIR OR REPLACEMENT, NOTIFY GE VNC. 8) Properly position the gasket.

9) Remotely transfer the materials into the cask cavity. A lifting eye or bail should be on the container or material.

10) Replace the cask lid and bolts. Tighten the lid bolts to 120 i 10 ft lbs torque in a criss cross pattern, c.

If materials to be loaded into the cask are Normt.1 Form materials:

1) Remove the cask lid bolts (Item 9).

Place bolts in a convenient location so they are not lost, damaged, or contaminated. ALL THE BOLTS WILL BE REQUIRED FOR REASSEMBLY..

2) Use an appropriately rated liftin6 device to carefully remove the cask lid.

The cask lid weight is stamped on the lid. 3) Smear the cask cavity for radioactive contamination. Decontaminate to the required 1cveln per appropriate internal procedures.

4) Check the cask drain line. Remove previous thread sealant and apply Teflon tape or other thread sealant to the drain plug threads.

Replace the drain plug and tighten.

5) Visually check the gasket and cask and lid sealing surfaces for cuts, nicks, tears, jagged edges or other defects that could adversely affect the sealing ability of the gasket.

I 4 j i

gs. + AugJst 10. 1990

6) Visually inspect the cask lid bolts for obvious damage.

IF ANY COMPONENT OF THE SHIPPING PACKAGE REQUIRES REPAIR OR REPLACEMENT, NOTIFY GE-YNC. 7) Properly position the gasket.

8) Remotely transfer materials into the cask cavity. A lifting bail or eye should be on the material or transfer container.

9) Replace the cask lid and bolts. Tighten the lid bolts to 120 i 10 ft lbs torque in a criss cross pattern.

7. Loadine casks - Wet overation a. Use appropriate material handling equipment and position the cask on stable foundation. Follow appropriate internal procedures for dose rate monitoring and respiratory protection requirements, b. Use chackle bolts mounted through holes (Item 11) in cack lifting ears for crane hook attachment points. Use an overhead crane for raising and lowering the cask. c. The cask weight is on the cask nameplate - do not exceed capacity of material handling equipment, d. Attach the crane hook or appropriate length sling to eye in cask lid for underwater lid removal. The cask lid weight is stamped on the lid. Use appropriately rated material handling equipment, e. Prepare the cask for lowering into the pool. Remove the lid bolts and drain plug (Item 10). CAUTION: DO NOT MOVE THE CASK ANY MORE TRAN NECESSARY WITH LID BOLTS REMOVED. f, Place the bolts and drain plug in convenient location so they won't be lost, contaminated, or damaged. ALL BOLTS AND DRAIN PLUG VILL BE REQUIRED FOR REASSEMBLY. g. Visually inspect the gasket and the cask and lid sealing surfaces for cuts, nicks, tears, jagged edges, or other defects that could adversely I affect the sealing ability of the gasket. h. Visually inspect the cask lid bolts and drain plug for obvious damage. IF ANY COMPONENT OF THE SHIPPING PACKAGE REQUIRES REPAIR OR REPLACEMENT, NOTIFY GE-VNC.

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August 10, 1990' 1; Slowly lower the cask into water to sufficient depth to insure safe radiation operating conditions for cask loading personnel. The cask should be lowered slowly to permit the cask cavity to fill with water slowly to prevent large air bubble escaping from cavity and to prevent-dislodging the cask gasket. 2 -j.' If materials to be loaded into the cask are free of contamination - sealed source container, etc. 1)- Before loading cask, be sure that all remote pool tools are as free of contamination-as item (s) being loaded, i

2) Slowly raise the cask lid. Monitor dose rate to working personnel.

f If cask cavity isn't completely full of water, air bubbles may escape when the lid is removed. Respiratory protection is recommended.

3) Transfer the materials into the cask using the lifting eye or bail on the container or material. Use care to not dislodge cavity gasket.

4) Remotely check the position the cask gasket and carefully replace the cask lid.

5) Slowly remove the cask from ti.e water. -Drain all the water from cask cavity over the pool or-transfer cask'to decon area to drain cavity.

6) Water may drain slowly' from cask cavity due _to the cask lid seal.

The cask lid may have to be raised slightly for ventin to allow all water to drain from the cask cavity. Raise cask lid carefully and, monitor radiation dose rate. The cask lid should be raised only enough to vent cask cavity.

7) Assure cask cavity is empty of water using a vacuum drying technique.

See Attachment I for a vacuum drying procedure.

8) Tighten the lid bolts to 120 1 10 ft lbs torque in a criss-_ cross pattern.

9) Dry the cask exterior

10) Move cask to stable foundation.

11) Check the cask drain line. Remove previous thread sealant and apply Teflon tape or other thread sealant to the drain plug threads.

Replace the drain plug and tighten. 1 6 J

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• c

. 'a August 10, 1990 o ~ 1,. k. If materials to be loaded into cask are Normal Form materials: 1) Slowly raise the cask lid. Monitor dose rate to working personnel. ~ If cask cavity isn't completely full of water, air bubbles may escape when lid is removed. Respiratory protection is recommended.

2) Transfer the material into the cask using the lifting eye or bail on the material or the container. Use earf not to dislodge cavity gasket.

3) Remotely check the position the cask gasket and carefully replace the cask lid.

4) Slowly remove the cask from the water. Drain all the watar from the cask cavity over the pool or transfer cask to decon aren to drain cavity.

5) Hater may drain slowly from cask cavity due to the cask lid seal.

The cask lid may have to be raised slightly for venting to allow all the water to drain from the cask cavity. Raise cask lid carefully and monitor radiation dose rate. The cask lid should be raised only enough to vent cask cavity.

6) Assure cask cavity is empty of water using a vacuum dr;ing technique.

See Attachment I for a vacuum drying procedure.

7) Tighten the lid bolts to 120 1 10 ft.lbs torque in a criss cross pattern.

8) Dry the cask exterior,

9) Move the cask to a stable foundation.

10) Check the cask drain line. Remove previous thread sealant and apply. Teflon tape or other thread sealant to the drain plug threads. Replace the drain plug and tighten. 8. Renssembiv and Return Shloment j a. Decontaminate cask exterior and survey for smearable radioactive l contamination. Cask exterior should be <100 cpm beta / gamma per fts and <200 dpm alpha per ft8 or must comply with DOT reSulations, b. Remove any old labels from cask exterior and apply a " FULL" label. l 1 Labeling the cask is an optional step. 4 1 i 7 c.

August 10, 1990 o c. Visually inspect the cask ears for bending, cracked welds, or other defects. NOTIFY CE-VNC IF ANY ABNORMAL CONDITION IS DETECTED. d. Return the full cask to the protective jacket storage area. e. Remove any old labels from protective-Jacket exterior, f. Visually inspect protective jacket for damage. NOTIFY GE VNC IF ANY DAMAGE REQUIRING REPAIR IS DETECTED. ' 1)- Check protective skirt for damage.

2) Check fireshield bolts for thread damage, galling, etc.

L

3) Check fireshield nuts for damage.

4) Visually check absorber angles on separator plate for veld integrity, damage, etc.

5) Visually check absorber tubes inside firoshield for damage.

l g. Align the cask on jacket base so that protective jacket will align with the cask lifting ears and mate with base bolt holes, h. Position protective jacket on jacket base and secure all jacket bolts to 900 1 100 ft lbs torque in a criss cross pattern. i. Secure the anti tiedown covers on protective jacket lifting eyes. Assure the printing on the anti tiedown covers is legible.-

j. Attach a security seal (Item 6) through a protective 'acket bolt.

Verify the seal nwnber is recorded on the' shipping paperwork. k. Survey the assembled package for radiation levels and smearabic contamination. Release the package per applicable DOT /NRC regulations. 1. Attach appropriate shipping labels. Place required DOT labels on the i protective jacket. m. ASSURE PACKAGE ASSEMBLY IS SECURED TO TRANSPORT VEHICLE USING THE APPROVED TIED 0VN EYES (ITEM 3). TWO ADDITIONAL CHAINS TO SECURE FIRESHIELD PALLET TO VEHICLE ARE RECOMMENDED. OTHER TIED 0VN R0 PING, CABLING, OR CHAINING ARRANCEMENT, USING THE TIEDOWN EYES (ITEM 3) MAY BE USED, PROVIDING THE SHIPPER PERFORMS AN ENGINEERING ANALYSIS AND EVALUATION. n. Promptly return the shipping package t. General Electric Company Vallecitos Nuclear Center Vallecitos Road / Highway 84 P.O. Box 460 Pleasanton, California 94566 l -8

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.g -- $.c ,,t f. t'-W p L.1 ATTACHMENT I L h 5 VACUUM DRYING PROCEDURE V' 1. Eauipment a. Vacuum pump b. Vacuum gage Ic 'c. Cask drain plug adaptor d. Vacuum lines [3 e. Absolute filter-f. Appropriate size wrenches I 2. Procedure L; i - a-Tighten lid bolts to 120 1 10 ft lbs torque in a criss cross pattern.- b. Install special drain plug adaptor, c. Attach vacuum pump line to drain plug. d. Direct discharge line to a ventilation duct and away from personnel o" working areas, e. Verify all fittings are tight, f. Turn on vacuum pump. E

g. -Evacuate cask cavity until 1 torr pressure-is obtained.

Cask cavity e will be dry at this. pressure. 'h. Shut off vacuum pump. i.- Vent system to atmosphere.:

j. Remove and store all equipment.

lb \\? .s I k i s

p. u, l r ATTACHMENT 2 Generic Model 600 Shinoina Packaae Unloadina Proce,dyrg i

)

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(ff?I lC' August 10, 1990 g et y poa s SHIPPING PACKAGE ASSEMBLY / DISASSEMBLY Generic Model 600 Tvoe B Shinning Package. ~ Unloading Procedure { i l '. Purnose To provide container users with the recommended procedure for unloadinb the s Model 600-shipping container and the preparation of the package assembly for shipment. ~ 2. EERRA This procedure estab1f,hes the guidelines to be followed for the handling l L activities associated with the GE.VNC supplied shipping package. VARIANCES u l TO THESE GUIDELINES ARE PERMISSIBLE PROVIDED THEY ARE IN COMPLIANCE WITH THE-APPLICABLE REQUIREMENTS OF.THE SHIPPING PACKACE CERTIFICATE OF COMPLIANCE, THE RECEIVIWG FACILITY LICENSES, AND DOT /NRC REGULATIONS. Internal facility opera;.ng procedures should be followed for the " routine" transfers, move-monts, decontamination, radiation controls, etc. of the shipping package. 3. Special Reauirements [ I-A copy of this procedure should accompany or-precede'the first shipping package sent to a user for receivf.at and1 shipping radiosctive materials. ~ p 4. Soccial Notes L: a. The protective jacket and the exterior of the shipping cask'are free'of I smearable radicactive contamination when shipped. The package should be r return shipped in the same_ contamination-free condition. b.- HQ MODIFICATION, REPLACEMENT, REPAIR, OR REWORK TO THE SHIPPING PACKAGE (PROTECTIVE JACKET AND CASK) SRALL BE;MADE WITHOUT VRITTEN PERMISSION l FROM (GE-VNC) IRRADIATION PROCESSING, PLEASANTON, CALIFORNIA. c. All package components (except produ;t and non-returnable product container) must be returned unless otherwise specified by GE-VNC. d. A " Type B Shielded Container" diagram is' attached and should be used to locate items referenced in the text of this procedure.. L

fg; y' 4 M,1 1' i.:, August.10,.1990= a-(. e.; Do NOT; attempt to lift the. cask by the eye (Item 1)-Lon the cask lid. The eye is-for lifting the cask lid only. The cask lid weight is. stamped in the lid. -f. ONLY THE TIEDOWN EYES (ITEM 3) ON THE SIDE OF THE FIRESHIELD ARE APPROVED TO SECURE THE PACKAGE ASSEMBLY TO THE TRANSPORT VEHICLE. TWO ADDITIONAL ~ CHAINS TO SECURE FIRESHIELD PALLET TO VEHICLE ARE RECOMMENDED. OTHER TIEDOWN ROPING, CABLING, OR CHAINING ARRANGEMENT, USING THE TIEDOWN EYES (ITEM 3) MAY BE USED PROVIDING THE SHIPPER l[ PERFORMS AN ENGINEERING ANALYSIS AND EVALUATION. g. Do HQI lift the protective jacket and cask package assembly by the top rectangular holes (Item 2) on protective jacket. These are only for moving the protective jacket after it has been unbolted from the base 1. (pallet). h. The lugs (Item 3) located on the side of the protective jacket are for-L tie downs during transport and may be used to lift the entire protective jacket / cask package assembly,

i. The lifting eyes (rectangular holes) on the protective jacket must be

-secured with the anti-tie-down covers (Item 4) to prevent use,as a tie-down system during transport. THE PROTECTIVE JACKET LIFTING EYES 4 t 3 ARE NOT APPROVED TO SECURE PACKAGE ASSEMBLY TO TRANSPORT VEHICLE.

j. The full cask may be thermally hot; avoid personnel contact or contact

{ with anything which might melt at 200*F, such'as plastic sheeting.- L Check the shipping documents for container contents.- L 5. Protective Jacket Disassemb1v a. Use appropriate capacity material handling' equipment-to place complete i package assembly in an area free of radioactive contamination. Package gross weight is on the protective jacket nameplate. (Item 5 on. attached diagram). y b. Monitor the exterior container surface for radioactive contamination and a dose rate with appropriate radiation detection instruments. Notify the Area Supervisor, Nuclear Safety,.or other designated personnel if the container surface is eontaminated or the dose rate is higher than l indicated on the shipping papers. l \\ I l-.

re x ,?> August 10, 1990' r c. Verify seLurity seal number lwith shipping documents. Remove'the secu;1ty seal. (Item 6' on att c ' 't diagram). d '. Jnscrew and' remove the bolts (1tes 7 on attached diagram) from the base 1 of the protective jacket. Use cree not to damage or lose the bolts. ALL THE BOLTS WILL BE' REQUIRED F0p.'EASSEMBLY. e.- Carefully lift the protective' jacket oft i.iis --:k, either by using the rectangular holes (Item 2) on top of the jacket or by using the lug tie-down ears (Item 3) and appropriately rated slings. The protective jacket must be lifted straight up to prevent damage to cask, f. Place the protective jacket in a noncontaminated area or cover to protect from radioactive contamination, g. Monitor the cask dose rate with an appro',;riate radiation detection L instrument, h. Smear the cask surface to check for radioactive contamination. If contamination is detected, notify Area Supervisor and follow appropriate internal procedures for contamination control and decontamination activit.,os. l 2 i'. Lift'the cask off protective jacket base using the ears (Item 8) on each side of the cask. DO NOT LIFT CASK USING EYE IN-THE CASK LID. '..'HE CASK LID EYE IS AUTHORIZED FOR LIFTING THE LID ONLY. Transport the cask to the shielded work area. The cask weight is on the cask nameplate Do NOT overload the material-transport equipment, ~ l 6. Unloadine Casks - Dry Remote Operation. a. Use appropriate material handling equipment and position the cask.on stable foundation in a shielded re nte handling facility. Follow-appropriate internal procedures for dose rate monitoring and respiratory protection requirements. .j b. If' cask contents are free of radioactive contamination - sealed-source container; special form containment, etc.:

1) Before removal of the cask lid, be sure that all remote handling tools to be used are as free of contamination as the item (s) being removed. k

15p t [, August 10, 1990. -{ y.1< '.i-e Il h,., L. 1 h

2) Remove the cask lid bolts (Item 9)'.

Place the bolts in a convenient' location so they are not lost, damaged,-or contaminated.,ALL THE-BOLTS WILL BE REQUIRED FOR REASSEMBLY.

n

3) Use an appropriately rated lifting device to remotely remove the k

cask lid. The cask lid weight is stamped on the lid. 4)' Remotely remove the inner container using the lifting eye or bail on j the container. Transfer the container to the shielded work area and m remove the sources or container contents.

5) Retu:m the empty container to the cask cavity, as required.

6) Smear the cask cavity and container for radioactive contamination.

3 . Clean to the required levels per appropriate internal procedures and DOT requirements.

7) Check the cask drain line. Remove previous thread sealant and apply i

l Teflon tape or other thread sealant to the drain plug threads. Replace the drain plug and tighten.

8) Visually check the sealing gasket and cask lid for cuts, nicks, tears, ragged edges or other defects that could adversely affect the i

sealing ability of the gasket.

9) Visually inspect the cask lid bolts for obvious damage.

IF ANY ^ COMPONENT OF THE SHIPPING PACKACE REQUIRES REPAIR OR REPLACEMENT, I NOTIFY GE-VNC.

10) Properly position the peket and replace the cask lid and bolts..

Tighten the lid br>'.r, to 120 1 10 ft-lbs torque in a criss cross i g a pattern. f c. If-contents are Normal Form materials:

1) Remove the cask lid bolts (Item 9).. Place bolts in a convenient location so they are not lost, damaged, or contaminated.- ALL THE BOLTS WILL BE REQUIRED FOR REASSEMBLY.

2) Use an appropriately rated lifting device to carefully remove the cask lid. The cask lid weight is stamped on the lid.

3) Remove the cask contents using the lifting eye or bail on the container.

Transfer the container to the shielded work area, l

4) Smear the cask cavity for radic active contamination.

Decontaminate to the required levels per appr)priate internal procedures. py. ' August;10, 1990 + f.. U' Y.,..- (~ 5)' Check the cask drain line.- Remove previous thread sealant and apply Teflon' tape or other thread sealant'to the drain plu6 threads. Replace the drain plug and tighten. 6

6) Visually check the sealing gasket and cask lid for cuts, nicks, j

4 tears,. jagged edges or other defects that could adversely affect the. d sealing ability of the gasket.

7) Visually inspect the cask lid bolts for obvious damage.

IF.ANY .) COMPONENT OF THE SHIPPING PACKAGE REQUIRES REPAIR OR REPLACEMENT,- NOTIFY GE-VNC.

8) Properly position the gasket and replace the cask lid and bolts.

Tighten the' lid bolts to 120 1 10 ft lbs torque in a criss cross t pattern. i i I 7. .Uniondine casks - Wet Ooeration a. Use appropriate material handling equipment and position the cask on - q stable foundation. Follow appropriate internal procedures for dose rate monitoring and respiratory protection requirements. b. Use shackle bolts mounted through holes (Item 11) in, cask lifting' ears ] for crane hook attachment points. Use an overhead crane for raising and l ~ lowering the cask, i

c..The cask weight is on the cask nameplate

- do not exceed capacity of material handling equipment. d. Attach the crane hook or appropriate length sling to eye in cask lid for ~ underwater lid removal. The cask lid weight is stamped on the lid. Use appropriately rated material handling equipment. I e. Prepare the cask for lowering into the pool. Remove the lid bolts and drain plug (Item 10). CAUTION: DO NOT MOVE THE CASK ANY MORE THAN j NECESSARY WITH LID BOLTS REMOVED. f. Place the bolts and drain plug in convenient location so they won't be j lost, contaminated, or damaged. ALL BOLTS AND DRAIN PLUG WILL BE REQUIRED FOR REASSEMBiJ. f S. Slowly lower the cask into water to sufficient depth to insure safe radiation operating cenditions for cask unloading personnel. The cask should be lowered slowly to permit the cask cavity to fill with water 0 j

3.. August 10',' 1990-I h throuB the drain plug and to prevent large. air bubbles escaping from .the cavity.. h. 'If contents are free of' contamination - sealed source container, etc.

1) Verify that the cask cavity contents won't float prior to transfer' to pool for cask lid removal.

'2) Before removal of the cask lid, be sure that all remote pool tools are as free of contamination'as item being removed.

3) Slowly raise'the cask lid. Monitor dose rate to working personnel.

If cask cavity isn't completely full of water, air bubbles may escape when the lid is removed. Respiratory protection is recommended.

4) Remove the inner container from the cask using the lifting eye or bail on the container.. Move the container to the storage or work area.

5)' Remotely' position the cask gasket and carefully replace the lid.

6) Remove the cask from the water.

Drain all the water from' cask cavity over the pool. -7) ' Water may drain slowly from cask cavity due to the cask lid seal, The cask lid may have to be raised slightly for venting to allow all water to drain from the cask cavity. ' Raise cask lid carefully and monitor radiation dose rate. The cask lid should be. raised only enough to vent cask cavity. L 8). Move cask to stable foundation and. remove the cask-lid. 9)' Check to see that the water has. drained from the cask cavity.

10) Visually inspect che gasket and the ~caskiand lid sealing surfaces for cuts, nicks, tears, jagged edges, or other defects that could adversely affect the sealing ability of the gasket.

11) Visually inspect the cask lid bolts and drain plug for obvious I

damage. IF ANY COMPONENT OF THE-SHIPPING PACKAGE REQUIRES REPAIR OR REPLACEMENT, NOTIFY GE-VNC. 12). Check the cask drain line. Remove previous thread sealant and apply Teflon tape or other thread sealant to the drain plug threads. Replace the drain plug and tighten. J

13) Properly position the gasket and replace the cask lid and bolts.

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C n' o o n-k, [ e - Augu:t 10, 1990? 4 a 1 w

14) Tighten.the. lid bolts to 120 i 10 ft-lbs torque in a criss cross pattern.

15) _' Dry the. cask exterior, i.

If_~ contents are Normal. Form materials: -1) Verify the contents won't float prior to transfer to. pool'for cask 1 lid removal. i 2) Slowly raise the cask lid. Monitor dose rate to working personnel. If cask cavity isn't completely full of water, air bubbles may escape when lid is removed. Respiratory protection is recommended. 7

3) Remove the inner container using the lifting eye or bail on the container. Move the container to the storage or work area.-

I

4) Remotely position the cask gasket and carefully replace the cask lid.

5) Remove the cask from the water.

Drain all the water from the cask-cavity over the pool. l

6) Water may drain slowly from cask cavity due to the cask lid seal.

The cask lid may have to be raised slightly for venting to allow alls the water to drain from the cask cavity. Raise cask lid carefully 1 and monitor radiation dose rate. The cask lid'should be raised only enough to vent cask cavity.

7) Move the cask to a stable foundation and remove the cask lid.

8) Check to see that the water has drained from the cask cavity.

9) Visually inspect the gasket and_the cask,'and lid sealing surfaces:

3 for cuts, nicks, tears, jagged' edges, or other defects that could adversely affect the sealing ability of the gasket.

10)._ Visually inspect the cask lid bolts and drain plug for obvious damage.

IF ANY COMPONENT OF THE SHIPPING PACKAGE REQUIRES REPAIR OR REPLACEMENT, NOTIFY GE-VNC. l

11) Check the cask drain line. Remove previous thread sealant and' apply Teflon tape or other thread sealant to the drain plug threads.

i Replace the drain plug and tighten, t 12)- Properly position the gasket.and replace the cask lid and bolts.

13) Tighten the. lid bolts to 120 1 10 ft-lbs_ torque in a criss cross pattern.

14) Dry the cask exterior. r ~ 1 4 August-10,.1990 o + 8.; Reassembiv and Return Shinment a. Decontaminate cask exterior and survey for smearable radioactive contamination.- Cask exterior should be <100 cpm beta / gamma per ft8 and <200 dpm alpha per ft2 or must comply with DOT regulations. b. Remove any old labels from cask exterior and apply an " EMPTY" label. -t Labeling the cask is an optional step. I c. Visually inspect the cask ears for bending, cracked welds, or other defects. NOTIFY GE-VNC IF ANY ABNORMAL CONDITION IS DETECTED. d. Return the empty cask to the protective jacket storage area. e. Visually inspect protective jacket for damage. 2:,TIFY GE-VNC IF ANY DAMAGE REQUIRING REPAIR IS DETECTED. 1) Check protective skirt for damage. 2) Check fireshield bolts for thread damage, galling, etc. 3) Check fireshield nuts for damage, l 4)' Visually check absorber angles on separator plate for weld integrity, damage, etc.

5) Visually check absorber tubes inside fireshield for damage.

I f. Align the cask on jacket base so that protective jacket will align with the cask lifting ears and mate with base bolt holes, l g. Position protective jacket on jacket base and secure all jacket bolts: to 900 i 10 ft-lbs torque in a criss-cross pattern. i h. Secure the anti tiedown covers on protective jacket lifting eyes,

i. Attach a security seal (Item 6) through a protective' jacket bolt.

_j. Survey the assembled package for radiation levels and smearable ] contamination. Release the package'per applicable DOT /NRC regulations. k. Attach appropriate shipping labels. Place " EMPTY" labels or other required DOT labels on the protective jacket. .1 1. ASSURE PACKAGE ASSEMBLY IS SECURED 00 TRANSPORT VEHICLE USING THE APPRCVED TIEDOWN EYES (ITEM 3). TWO ADDITIONAL CHAINS TO SECURE q FIRESHIELD PALLET TO VEHICLE ARE RECOMMENDED. OTHER TIEDOWN ROPING, i CABLING, OR CHAINING ARRANGEMENT, USING THE TIEDOWN EYES (ITEM 3) MAY BE USED, PROVIDING THE SHIPPER PERFORMS AN ENGINEERING ANALYSIS AND EVALUATION. f; 8 E L u.....

I ] +- August 10, 1990' ,;e,

m. : Promptly return the shipping package to:

i General Electric Company l Vallecitos Nuclear Center ,c Vallecitos Road / Highway 84 P 0,-Box 460 Pleasanton, California 94566 t 1 I l i i gg: i I, l l L -1 9

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• $ACMT

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