ML20151D327
| ML20151D327 | |
| Person / Time | |
|---|---|
| Site: | 07109073, 07109145 |
| Issue date: | 07/29/1987 |
| From: | Frazer W LN TECHNOLOGIES CORP. (FORMERLY LONDON NUCLEAR SVCS |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20151B142 | List: |
| References | |
| 28448, 29122, 870729, LN-87-00292-OP1, LN-87-292-OP1, NUDOCS 8807250062 | |
| Download: ML20151D327 (2) | |
Text
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TECHNOLOGIES c, t) t-a p C f 1 A T I O N 1D01 K fiY &lO AD COLUMOl^. G C TMM201 (flO'M ODG *13G0 July 29, 1967/
L?1-8 7 -- 0 0 2 9 2 -O P1 Mr. Charles E.
MacDonald, Chief I
Tranrportation Certification Branch Division of Fuel Cycle and Material Safety, IIMSS United States Nuclear Regulatory Commission Washington, D.C.
20555 l
Subject:
Name Change of the NUS-50 Series Shipping Casks, Docket:
Reference:
LN Technologies Letter # LN-87-0197-B1
Dear Mr. MacDonald:
As requested by Mr. Williams of your staff, enclosed are six (6) copies of LN Technologies Procedure WM-013, "Gamma Scanning of Lead Shielding for LN Type Casks" (Revision F)..
If I can be of further assistance, please contact me bt (803) 256-4355.
Sincerel
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W.H.
Frazer l
Transportation Supervisor WHF: dab l
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1 of 20 j!l l'
TITLE 1
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OPERATING INSTRUCTIONS FOR LOADING AND TecsNotocess UNLOADING TiiE LN-142 CASK.
.C o n r:o A A Ti O N i
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COPYRIGilT C 1987 BY LN TECHNCLOGlES CORPORATIO!!
ALL RIGilTS RESERVED.
NO PART OF TilIS DOCUNENT MAY BE REPRO-DUCED OR TRANSMITTED IN ANY FORM OR BY ANY MEANS, ELECTRONIC,
OR MECl!ANICAL, INCLUDING PHOTOCOPYlNG, RECORDING OR BY ANY INFORMATION STORAGE AND RETRIEVAL SYSTEM, WITHOUT PERMISSION j
IN WRITING FROM LN TECliNOLOGI ES CORPORATION, EXCEPT FOR STRICTLY CONTROLLED DISTRIliUTION, FOR EVALUATION PURPOSES.
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2 of 20 TABLE OF CONTENTS Page l.0 PURPOSE 3
2.0 APPLICABILITY 3
3.0 DEFINITIONS 3
4.0 REFERENCES
3 5.0 RESPONSIBILITIES 3
6.0 PROCEDURE 4
6.1 Cask &. Vehicle Receipt Inspection 4
6.2 Removal of Cask from Trailer 6
j 6.3 Loading Cask 7
6.4 Unioading Cask 19 l
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NO, REvlSION PAGE WM-021 E
3 of 20 1.0 PURPOSE The purpose of this procedure is to provide operating instructions for loading and unloading the LN-142 radioactive materials shipping casks.
2.0 APPLICABILITY This procedure shall be followed when loading or unloading a LN-142 shipping cask.
This procedure may be used in its entirety as is or incorporated into the policies and procedures of a registered user.
3.0 DEFINITIONS None.
4.0 REFERENCES
4.1 U.S.
Nuclear Regulatory Commission C'.Itificate of Compliance No. 9073.
4.2 LN Technologies Corporation Quality Assurance Manual 4.3 Code of Federal Regulations, Title 10 Part 71 4.4 Code of Federal Regulations, Title 49 4.5 WM-022, "LN-142 Maintenance" 4.6 WM-023, "Soap Bubble Leak Test - LN Technologies Corporation Type A Shipping Casks" 1
5.0 RESPONSIBILITIES Users of the cask shall ensure the following.
I
g REVISION PAGE eo' WM-D21 E
4 of 20 5.1 A Certificate of Compliance (C of C) 'for this cask and all the documents re f er enced by the C of C which relate to the use and maintenance of the cask are on file.
5.2 User has registered as a user of this cer tified cask with the U.S, NRC in accordance with References 4.3 and 4.4.
5.3 The cask has been inspected under a quality assurance program to verify its compliance with the terms and con-ditions of the issued C of C.
5.4 The cask is loaded and closed in accordance with a written procedure which documents the requirements and restrictions stated in the C of C.
5.5 The shipment meets all of the applicable requirements established by the Department of Transportation, U.S.
Nuclear Regulatory Commission, burial site disposal criteria and burial site licenses.
5.6 Lif ting requirements of Attachment 1 are reviewed.
6.0 PROCEDURE 6.1 Cask & Vehicle Receipt Inspection 6.1.1 Per form radiation and exter nal contamination sur-veys on both the shipping cask and vehicle.
Loose and fixed contamination levels shall comply with the requirements of Reference 4.4.
In the event these specified levels are exceeded, immed-iately notify the Transportation Supervisor at LN Technologies Corporation, (803) 256-4355.
6.1.2 Inspect tiedown lugs and shackles on cask and trailer for cracks and wear.
6.1.3 Inspect tiedown cables to ensure they are not loose or damaged (crimped, frayed, etc.).
Tighten if necessary.
6.1.4 Inspect tiedown ratchets / turnbuckles to ensure they are in proper working condition.
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NO.
REVISION PAGE WM-021-E 5 of 20 6.1.5 Ensure cask ratchet binders.and binder accessories are in proper working ' condition.
6.1.6 Ensure that impact limiter and secondary lid lifting lug covers are present.
6.1.7 If the cask assembly.is to be removed f r om -the transport trailer to facilitate loading,1 refer 'to step 6.2.
6.1.8 Remove cask upper impact limiter in accordance with step 6.3.2.
6.1.9 Inspect the prima %y lid test portal plug for the 4
presence of thread sealant.
6.1.10 Remove cask primary lid in accordance with step.
6.3.3.
6.1.11 Inspect primary lid gasket for cracks or tears
.which would affect proper sealing ~.
6.1.12 Inspect interior of cask for standing water.
Water must be removed prior to shipment.
6.1.13 Inspect interior of cask for-obstructions to j
loading.
6.1.14 Inspect interior of cask for defects which might af fect the cask integrity.
6.1.15 Inspect the secondary lid holddown nuts to ensure they are all present and not~ damaged.
6.1.16 If the secondary lid will be removed for ~ loading the cask, or if the secondary lid security seal has been broken or is not installed, inspect ~ the secondary lid outer and inner gaskets for cracks, nicks or tears which would affect proper scaling.
Incpection is not required if secondary lid has not been removed and security seal is in place and intact.
a.
Remove the secondary lid from the primary cask lid in accordance with steps 6.3.7.d through 6.3.7.f.
b.
Inspect the secondary lid holddown studs - for damage.
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1 go, REVISION PAGE
-WM-021' E
6 of 20 I
c.
. Inspect the two' secondary lid gaskets for cracks or tears which'would affect proper-sealing.
d.
Install secondar y lid in accordance with -etep 6.3.9 unless loading requires the secondary lid to be removed.
6.2 Removal of Cask from Trailer If it is necessary to remove the. cask ' from-the--tr ailer to facilitate loading, proceed as'follows:
6.2.1 If cask is equipped with'raincover, remove the raincover from the cask.
6.2.2 The impact limiter may be removed beforeHor~after cask removal from trailer in accordance with' step 6.3.2.
6.2.3 Loosen ratchet binders / turnbuckles as necessary to remove pins from Liedown shackles at cask end of~tiedown' system.
6.2.4 Remove pins from tiedown shackles.
6.2.5 Loosen cask shear blocks or ring if installed on j
trailer.
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-CAUTION-DO NOT USE IMPACT LIMITER LIFTING LUGS TO LIPP CASK.
6.2.6 Use the three (3) primary lid lifting lugs and suitable rigging to lift cask of f trailer and j
place cask in proper position for loading.
Empty cask weight with primary lid and. secondary lid in place is 51 000 lbs Empty cask weight
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with primary lid, secondary lid and upper impact j
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.h limiter in place is 54,000 lbs.
Maximum loaded cask weight, with upper impact limiter is 66,000 lbs.
'6.3' Loading Cask Remove the primary full diameter cask lid as follows:
6.3.1 If cask is equipped with a raincover, remove the raincover from the cask.
6.3.2 Discorinect and remove the impact limiter as.
follows:
a.
Remove the eight spring clip pins from the upper impact limiter attachment tabs by pulling the pin out through the hole in the attachment tabs and primary attachment lugs (see Figure 1).
b.
Remove-the impact limiter lifting lug covers.
c.
Connect a suitable lifting cable to the i:
three impact limiter lifting lugs in the t
center ring of the impact' limiter.
d.
Lift the impact ' limiter away from the cask.-
The upper impact' limiter weighs 3,000 lbs.
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8 of 20 6.3.3 Dis connect. the cask primary lid from the cask.as follows:
a.
Release the ratchet-binder handle from its storage positten.
b.
Engage the flip ~ block to the sprocket wheel in the direction'necessary to loosen the tatchet binder (see Figitr e ' 2).
RATCHET A'
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POS! TION c.
Loosen the ratchet binder by pulling the handle in the appropriate direction.
d.
Remove the eight spring clip pins by pulling the pin through the hole in the threadlees-bolt (see Figure 3).
e.
Remove the eight threadless bolts by pulling the bolt through the holes in the upper j
ratchet binder connector and ntimary lid closure lug (see Figure 3).
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9 of 20
-CAUTION-WilENEVER THE CASK LID IS MOVED ON OR OFF Tile CASK, TREAT THE UNDERSIDE OF Tile LID AS A CONTAMINATED SURFACE UNTIL A CONTAMINATION SURVEY CAN BE MADE TO VERIFY ITS STATUS.
ALSO, ENSURE THAT THE CASK LID IS MOVED HIGH ENOUGH ABOVE THE CASK TOP TO AVOID DAMAGE TO THE CASK LID ATTACHMENT LUGS WHEN THE, LID IS MOVED AWAY FROM OR OVER THE CASK.
g.
Remove the cask lid using the three (3) lifting lugs on the cask lid to accomodate suitable rigging.
The cask lid weighs 6,990 lbs.
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h.
Inspect interior of cask for free standing water. All water must be removed prior to loading and shipping.
i.
Inspect interior of cask for obstructions which could affect loading or proper i
placement of drum pallets and/or liners.
j.
Inspect the interior of cask for defects which might uffect the cask integrity.
6.3.4 Loading Five-drum pallets into the cask:
a.
Using the slings provided and exercising caution in the handling of the pallet due to possible contamination, remove the top pallet from the cask.
Inspect slings on both pallets for damage or conditions which could affect safety.
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REVISION PAGE WM-021
.E.
--10 of 20 NOTE:
Empty pallet weight - approx. 300 lbs.
b.
Exercising caution to avoid placing drums on the pallet lift slings, load five (5) dru_ms on the lower pallet left in the cask.
(See
-Figure 4 for drum placement on. pallet.)
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Place the top pallet into the cask.
Ensure lower pallet slings are accessible for retrieving pallet when off-loading.
Pallet Weight - approximately 300 lbs.
Exercising caution to avoid placing drums on-the pallet lift slings, load five (5). drums on the top pallet in the cask (see Figure-4).
d.
Install prim $ry lid in accordance with step 6.3.8.
6.3.5 Loading the Five-Drum Pallets Outside the Cask:
a.
Using slings provided and exercising j
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REvlSION PAGE WM-021 E
-11 of-20 caution in the handling -of the pallet. due. to -
possible contamination,: remove both ' the pallets from the cask.
~
NOTE:
Empty Pallet-Weight - approx.'300 1bs.
i b.
Inspect slings on both pallets: for damage.or conditions.which would affect safety, c.
Load five drums onto each pallet (see Figure.
4).
For maximum shielding, load higher. dose. rate -
drums toward the front and rear of the trailer.
d.
Lif t one of the loaded pallets and place it inside the cask.
Ensure slings of lower pallet are accessible I
for retrieving when off-loading.
e.
Lift the other loaded pallet and place it inside the cask on the top of'the first pallet.
Ensure easy access to the pallet lifting slings for removal of pallet at-burial site.
f.
Install primary lid in accordance with step 6.3.8.
6.3.6 Loading a Prefilled Liner into the cask:
a.
Ensure lid and all plugs or caps are 3
installed on liner.
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b.
Ilsing the lifting slings provided, place 1
liner in the cask.
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- WM-021 E
12 ;of 20 f
c.
Install shims / shoring or liner inserts between liner and' cask as necessary to secure in position.
'd.
Install primary lid in accordance with re.9 6.3.8.
6'.3.7 Installing and loading empty liner-in cask:
a.
Using the slings provided, place-liner in the cask.
b.
Install shims / shoring o.-
liner inserts between liner and cask as necessary to secure in position.
c.
Install primary lid in'accordance with step J
6.3.8.
d.
Remove the eight secondary lid holddown nuts.
I e.
Remove the secondary lid lifting' lug cover and connect appropriate lifting sling (weight 1,750 lbs.)
-CAUTION-WHENEVER THE CASK SECONDARY' LID IS MOVED ON OR OFF THE CASK, TREAT THE UNDERSIDE OF THE'. LID AS A CONTAMINATED SURFACE UNTIL A CONTAMINATION SURVEY i
CAN BE MADE TO VERIFY ITS STATUS.
l ALSO, ENSURE THAT THE CASK SECONDARY LID IS. MOVED HIGH ENOUGH ABOVE THE CASK TOP TO' AVOID DAMAGE TO THE CASK SECONDARY LID GUIDE PINS.
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f.
Remove the secondary lid from cask and move to suitable stot' age area.
g.
Load the radioactive rwterial into the i
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NO.
REVIS!ON _
PAGE
,1 WM-021' E
13 of 20
-liner.through - the cask secondary' opening.
"h.
Install the liner lid,~ plugs;or. caps, as
. appropriate, ontcLliner.-
i.
Re-install secondary' lid in'accordance~with~
step 6.3.9.
j.
If required by Reference 4.5, per form Soap Rubble Leak Test (Ref er ence 4.6 ). ; '?est may be per focmed before or. af ter cask" is placed on transport trailer.
However, it must be j
performed before re-installation of upper impact' limiter, k.
EIf the cask was removed from the transport a
i trailer to. facilitate loading, re-install in accordance with step 6.3.'10.
1.
Install the upper impact limiter in accordance with step 6.3.12.
m.
If the cask is -equipped with a raincover, re-install.
6.3.8 Installation of. Primary' Cask Lid a.
Inspect primary lid gasket for cuts, nicks or other damage which may af fect the sealing capabilities.
Replace if necessary.
(Reference 4.5).
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-CAUTION-l WHENEVER THE CASK LID IS MOVED ON OR OFF THE CASK, TREAT THE UNDERSIDE OF THE LID AS A CONTAMINATED SURFACE UNTIL A CONTAMINATION SURVEY CAN BE MADE TO VERIFY ITS STATUS.
)
ALSO, ENSURE THAT THE CASK LID IS MOVED HIGH' j
ENOUGH-ABOVE THE CASK TOP TO AVOID DAMAGE TO THE CASK LID ATTACHMENT LUGS WHEN THE LID IS MOVED-i' AWAY FROM OR OVER THE CASK.
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REvlSION PAGC JWM-021 E
l14_ of 20 b.
Use the three-(3) lifting lugs on the cask lid and suitable rigging to. lift the cask primary lid and ple 7e it on.the cask.
'Ise the alignment index lug and guide - plates _for proper positioning.
Conduct a visual inspection to ensure tha t. the painted lid-index lug on the cask lid lines up between the painted guide plates on the cask body.
Adjust the lid position as necessary to acce,mplish proper alignment (see Figure 5).
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Install the threadless bolt through the upper ratchet binder connector and the primary lid closure lugs on all eight-(8) ratchet binders l
(see Figure 1).
d.
Install the eight (8) spring clip pins by inserting the in through the hole in the threadless bolt ( s
's Figure 3).
l-NO.
REVISION PAGE WM-021 E
15 o f 20 l
-CAUTION-RATCHET BINDER HANDLE ROTATION CAN BECOME TIGHT WHEN LOOSENING OR TIGHTENING A RATCHEP BINDER, THEREFCRE, VISUAL INSPECTION IS NECESSARY TO.
ENSURE THAT THE ENDS OF THE RATCHET BINDER ARE MOVING TOGETHER WilEN THE HANDLE IS ROTATED TO TIGHTEN THE PRIMARY LID.
ENSURE THAT ALL RATCHET BINDERS ARE EQUALLY TENSIONED AS TIGrlTLY AS CAN BE ACHIEVED WITHOUT THE USE OF MECHANICAL AIDS (SUCH AS "CHEATER BARS" OR RATCHET HANDLE EXTENSIONS).
e.
Tighten the ratchet binder by engaging the flip block to the sprocket wheel and rotate the ratchet binder handle in the direction necessary to tighten the ratchet binder.
f.
Disengage the flip block and rotate and secure the handle to its storage position (see Figure 2).
g.
Install a shipping security wire through hole at end of one ratchet binder handle and then around handle on second ratchet binder.
Install a second secur ity wire on the ratchet binders on opposite side of cask in the same manner.
In addition to this security wire, the cask user has the option to place a second security wire on another ratchet binder located on the opposite side of th e cask.
a
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NO.
REVISION PAGE E
16 of 20 WM-021 6.3.9 InstalAation of Secondary Lid:
a.
Inspect the two secondary lid gaskets for cuts, nicks or other damage which may affect the sea?ing capabilities.
Replace, if necessary (Reference 4.5).
b.
Using the one (1) lifting lug on the secondary lid to attach suitable rigging, lift and place secondary lid into the secondary opening on the primary lid.
Use alignment guide pins to assure proper lid alignment.
If the alignment guide pins are,,
damaged, verify proper lid alignment-using the painted alignment markers on thesecondary lid and the cask primary lid.
Be careful not to damage the gaskets during installation.
c.
Secure the secondary lid by installing and tightening the secondaxy lid stud nuts in l
accordance with the following torquing sequence.
Coat all thr eaded surfaces with an anti-seize compound.
Install and hand-tighten all fasteners.
Number fasteners 1 through 8 clockwise.
Torque all fasteners to twenty (20) foot-pounds using the following tightening sequence:
1,5,3,7,2,6,4,8.
Torque all fasteners to forty (40) foot-pounds usi ng the following tightening sequence:
2,6,4,8,3,7,1,5.
Torque all fasteners to fifty-five (55) foot-pounds using the f'ollowing tightening sequence:
3,7,1,5,4,8,2,6.
1 1
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REVISION PAGE WM-021
- E 17 ' o f 20 Check tight all'fastners t.o fif t.y-five
-(55) foot-pounds:
4,5,6,7,8,1,2,3.
d.
Install'the secondary. lid lifting lug cover.
Install shipping security. wires on the e.
secondary lid through the hole" provided in one of the secondary lid st.ud nut.s.
6.3.10 Cask Installation on Trailer:
-CAUTION-DO NOT USE THE CASK SECONDARY - LID LIFTING LUG OR THE UPPER IMPACT LIMITER LIFTING LUGS TO LIFT 4
THE CASK.
a.
Use the three (3) cask primary lid lifting lugs and suitable rigging to lift the e,,c and place it in the proper position on,he transport trailer.
The lower impact limiter fits over a position ring mounted on the transport trailer.
See Figure 6 for proper orientation.
FIGURE 6 N
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CABLES CABLES
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NO REVISION PAGE WM-021 2
18 of 20 b.
Inspect tiedown lugs and shackles on cask and transport trailer for cracks and wear which would affect their strength, c.
Inspect cask trailer tiedown cables to en.sure they are not loose or damaged (crimped, frayed, etc.).
d.
Inspect cask cable tiedown ratchets /
turnbuckles to ensure they are in proper working condition, e.
Install shackles thr ough the end of the cask tiedown cables and attach to cask tiedown lugs by screwing pin through shackle and hole in lug.
f.
Tighten cask cable ratchet binders /
turnbuckles as necessary to secure cask on transport tr ailer.
6.3.11 If required by Reference 4.5, per form Leak Test (Reference 4.6).
Test may be per for med befor e or after cask is placed on transport trailer, however, it must be per for med bef or e re-installation of upper impact limiter.
6.3.12 Install upper impact limiter as follows:
a.
Connect suitable rigging to the upper impact limiter lifting lugs and position impact limiter above cask primary lid, b.
Prior to lower ing upper impact limiter onto primary lid, align index attachment tab with alignment index lug on cask primary lid.
c.
Lower upper impact limiter onto cask primary lid.
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c NO.
REVISION PAGE WM-021 E
19 of 20 d.
Install the eight apring clip pins into the attachment tabs.
e.
Disconnect lifting cables from upper impact limiter.
f.
Install the impact limiter lif ting lug covers.
6.3.13 Display Proper Labels on Cask (Reference 4.4).
6.4 Unloading Cask Remove the container (s) from inside the cask as follows:
6.4.1 If the cask is equipped with a raincover, remove the raincover from the cask.
6.4.2 Disconnect and remove the upper impact limiter as per 6.3.2.
6.4.3 Disconnect and remove the primary lid as per 6.3.3.
6.4.4 Remove contents from inside cask, being careful not to damage inside of cack lining.
6.4.5 Perform survey of interior of cask and cask pallets if used.
Contamination should not exceed limits of Reference 4.4.
6.4.6 Install pallets, if removed.
6.4.7 Reinstall cask primary lid as per 6.3.8.
6.4.8 Reinstall upper impact limiter as per 6.3.12.
6.4.9 Ensure all lifting lug covers are accounted for and installed properly.
6.4.lC If cask is equipped with a raincover, re-install on cask upper impact limiter and attach tiedowns.
6.4.11 Prepare empty cask for transport as per Reference i
4.4.
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REVISION PAGE WM-021 E
20 of 20 ATTACHMENT 1
~
TYPE OF LIFTING ITEM FIXTURE REQUIRED ITEM WEIGHT Secondary Lid 1 point 1,750 lbs.
Upper Impact Limiter 3 point 3,000 lbs.
Primary Lid with Secondary 3 point 7,000 lbs.
Lid Installed Primary Lid with Secondary 3 point 10,000 lbs.
Lid and Upper Impact Limiter Installed Cask Assembly without Upper 3 point 51,000 lbs.
Impact Limiter or Contents Cask Assembly with Upper 3 point 54,000 lbs.
Impact Limiter Installed No Contents Cask Assembly without Upper 3 point 63,000 lbs.
Impact Limiter but with Maximum Contents Cask Assembly with Upper 3 point 66,000 lbs.
Impact Limi ter and with Maximum Contents
NO.
RE vision PA G E 101-022 F
1 of 15 A'
TITLE
-du. m LN-142 MAINTENANCE T C t.' H NO L O G a C S
.c o n oo n A Tio N COPU'Glii C l '.' 8 7 BY !N lECHNOLOGIE5 CORPORATIO:-
ALL RIGHTS RESERVED.
NO PART OF THIS DOCUMENT MAY BE REPRO-UUCED 0? TRANSMITTED IN ANY FORM OR BY ANY MiiANS, ELECTRONIC 09 M iiC!' Jci i C A l., INCLUDING PHDTOCOPYING, RECORDING OR BY AN'l I't-"..iT ! O - STOR.'sGE NJD RETRIEVAL SYSTEN, WITHOUT PERMIS$10N M.
"ROM 1.. N TECHNOLOGi+iS CORPORATION, EXCEP1 FOR
'i i n i C ~ !. '1 tr. i'ROL L iD DISTRIBUTION, FOR EVALUATION PURPCSES.
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2 o f 15 WM-022 TAtsLE OF CONTENTS Page l
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3 1.0 PURPOSE 3
2.0 APPLICABILITY 3
3.0 DEFINITIONS 1
4
4.0 REFERENCES
4 5.0 RESPONSIBILITIES 5
6.0 TOOLS AND MATERIALS 5
7.0 PERIODIC MAINTEN ANCE REQUIREMENTS 7
8.0 GASKET / SEAL REPLACEMENT 7
8.1 Primary Lid Gasket Replacement 8.2 Secondary Lid Outer Gasket Replacement 8
8.3 Secondary Lid Inner Gasket Replacement 9
8.4 Secondary Lid Holddown Stud and Nut Replacement 9
8.5 Ratchet Binder Repair or Replacement 9
11 0.0 DISTRIBtJTION OF MAINTENANCE RECORDS 12 13 Attachment '
14 15 w- -
f Nn, REVISION PAGC WM-022 P
3 of 15 1.0 PURPOSS This procedure establishes preventative maintenance requirements and describes the correct methods ~ for gastet, secondary lid stud and ratchet binder replacement on the
]
LN-142 shipping cask.
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2.0 APPLICABILITY This procedure shall-be followed when performing maintenance on an LN-142 shipping cask.
This procedure may be used in its entirety as is or incorporated into the policies and procedures of a registered user.
3.0 DEFINITIONS 3.1 Primary Lid Gasket -
.75" thick by 3.00" wide:
Silicon 3.2 Secondary Lid Outer Gasket -.25" thick x 1.00" wide:
Neoprene 3.3 Secondary Inner Gasket
.25."
thick x 1.00" wide Silicon 3.4 Ratchet Binder 3/4" x 10 Type J:
160,000 lbs.,
)
minimum br eak strength 3.5 Secondary Lid Stud - Driver Type Stud 1" - 8 UNC-2A:
ASTM A320 GR. L7 3.6 Secondary Lid Retaining Nut - Hex nut 1" - BUNC-20:
Com'L 3.7 Secondary Lid Alignment Guide Pin -
.75" Dia.:
ASTM A-516, GR 70 3.8 Primary Lid Alignment Guide Plate - On cask body
.50" thick:
ASTM A-516, GR 70
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REvlSION PAGE WM-022 F
4.of 15
4.0 REFERENCES
4.1 OA-001, "Procedure and Instruction Preparation and Control" 4.2 WM-021, "Operating' Instructions for Loading and Unloading-the LN-14 2 Shipping. Cask" 4.3 U.S.
Nuclear Regulatory Comnission ~ Ce r tificate of Compliance No. 9073.
4.4 U.S.N.R.C.
Safety Evaluation Report on Model No.
NUS-OH-142 shipping cask Docket No. 71-9073.
4.5 AD-002, "Inventory Control" 4.6 AD-001, "Procurement Control" 4.7 WM-Oll, "Soap Bubble Leak Test - LN Technologies Type A Shipping Casks" 4.8 LN Drawing No. E-9414-M-3204 5.0 RESPONSIBILITIES 5.1 LN Transpor tation Supervisor - Project Manager -
overall responsibility for cask maintenance operations.
5.2 LN Technologies Shop Managet Cask Maintenance Manager - r e s[oonsible for the performance of all required cask maintenance. Procurement of gasket and other replacement parts.
All cask replacement parts are procured and controlled in accordance with LN Procurement Control Procedure No. AD-001.
5.3 Buyer - Procurement, storage and issuing of quality control mater ials as directed by the Shop Manager.
5.4 Quality Assurance Representative of the Registered Users Organization shall ensure that cask maintenance per formed at the registered user's site ( by other than LN personnel) is accomplished in accordance with tha t registered users NRC approved 10 CFR 71, Subpart H, L
no, scvis.on PAGE WM-022 F-5 of 15 Quality Assurance Program. shall be' I
complet.ed by the registered user's O.A.
Representative f
when such maintenance is per for med, i
I
~
l 6.0 TOOLS A:JD MATERI ALS 4
i 6.1 Gaskets 6.1.1 primary Lid 6.1.2 Shield Plug (Outer /Inna: )
6 '. 2 Ratchet Binders 6.3 Secondary Lid Studs 6.4 Secondary Lid Nuts 6.5 Gasket Scraper or clean metal scraper knife 6.6 Steel wire br ush - drill type or hand held:
6.7 Acetone 6.8 Gasket adhesive:
Silicon Lube (RTV) GE 10-8101 or other brand adhesives which are recommended by the manufacturer for bonding silicon or neoprene to~ metal.
7.0 PERIODIC MAINTENANCE REQUIREMENTS 7.1 Primary Lid Gasket Silicon 7.1.1 Inspect primary lid gasket prior to placement of the primary lid on the cask.
Gasket must be free of defects such as nicks, f r ays and cuts (Reference 4.2) which would affect proper sealing.
7.1.2 Replace gasket every twelve months as per C of C.
7.1.3 Replace ga s'< e t to correct any defects noted in step 7.1.1 or to comply with 7.1.2 above (Refer to step 8.1).
i 7.2 Shield Plug Gaskets (Outer / Inner) 7.2.1 Inspect secondary lid gaskets.
Gaskets must be free of defects such as nicks, frays and cuts
}
1
= NO.
REVISION PAGE WM-022-F 6 of 15 (Reference 4.2) which would affect proper sealing.
7.2.2 Replace gaskets every twelve months as per C of C.
7.2.3 Rep' ace gaskets to correct any. defects noted in step 7.2.1 or to comply.with 7.2.2 above.
Refer to 8.2 or 8.3 as necessary.
7.3 Secondary Lid Holddown Studs and Nuts 7.3.1 Inspect studs for excessive wear or ' cross threading.
7.3.2 Inspect nuts for wear caused by cross threading or over torquing.
7.3.3 Repair or replace studs and/or nutsEas necessary (Refer to 8.4).
7.4
,R,a t ch e t Binders 7.4.1 Inspect binders.
Check for f reedom :of movement and locking action.
7.4.2 Check ratchet binder handle storage straps for dry-rot or breaks.
7.4.3 Repair or replace as necessary.
. Refer to step 8.5.
7.5 Secondary Lid Guide Pins and Marks 7.5.1 Inspect secondary lid guide marks prior-to each shipment for paint flaking or fading.
'.5.2 Inspect secondary lid guide pins for excess i
wear, whenever secondary lid has been removed.
Pin should engage secondary lid when lid is installed on primary lid.
7.5.3 Repaint secondary guide marks as necessary.
7.5.4 Repair or replace secondary lid guide pins as necessary.
Refer to step 8.4.
tJO.
RE VISION Pt 0E WM-022 P
7 o f 15 7.6 Cask to Transport Trailer Tiedown Cable Assembly 7.6.1 I-n s pe c t prior to each enipment.
7.6.2 Inspect tiedown cables for broken or frayed wire.
7.6.3 Inspect tiedosn tatchet binderc for security and lubr icate.
7.6.4 Inspect transport trailer cask tiedown ' lugs for obvious cracks.
7.6.5 Repair and/or replace as necessary.
7.7 Leak Test of Cask 7.7.1 Required prior to acceptance f rom fabr icator.
7.7.2 Required after maintenance has been performed on any gasket.
7.7.3 Refer to Reference 4.7, "Soap Subble Leak Test -
LN Technologies Type A Shipping Casks", WM-011 8.0 GASKET / SEAL REPLACEMENT 8.1 Primary Lid Gasket Replacement (Silicon) 8.1.1 Remove old flat gasket by hand or use metalscraper, using care to prevent damage to seating surfaces. Discard old gasket material using proper radiological procedures.
8.1.2 Clean entire gasket seating curfaces (both cask body and lid) by using a steel wire br ush along with acetone as a cleaning solvent and lubr ica r.L.
8.1.3 Inspect all seating surfaces for foreign material or nicks which would prevent proper seating and sealing.
8.1.4 Inspect new replacement gasket for nicks, frays and cuts.
Discard unusable materials.
8.1.5 Pit gasket to cask body sur f ace.
lo-REVISION
. PACE
-WM-022 F
8 of 15 f.
8.1.6 Place gasket adhesive on cask body in f
accordance with adhesive directions.
8.1.7 Press gasket into adhesive with hand pressure and allow time recommended on th e <td h e s i ve -
d i r ec tions for the adhesive to set up.
8.1.8 Make butt joints using adhesive between the two gasket surfaces.
Compress to fit.
See Figure 1 for recommended gasket joint method.
riwe. i g....
f.
)i f
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)
X es % <....ir C.eket Joint NL.il 8.1.9 Complete attachments 1 and 4 (if applicable) and distribute in accordance with Section 9.0.
8.2 Secondar y Lid Outer Gasket Replacement (Neoprene) 8.2.1 Remove old flat gasket by hand or use metal scrapper.
Use care to prevent damage to seating surfaces.
8.2.2 Clean entire gasket seating surfaces (both primary lid and shield plug) by using a steel wire brush along with acetone as a cleaning solvent and lubricant.
8.2.3 Inspect all seating sur faces for foreign material or nicks which would prevent proper sealing.
8.2.4 Place adhesive on primary cask lid, press gasket in place and allow to set until adhesive is set.
8.2.5 Complete attachments 2 and 4 (if applicable) and distribute in accordance with Section 9.0.
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- NO.
RCviSION PAGE f
WM-022 F
'9 of 15 i
r I
8.3 Secondary Lid Inner Gasket Replacement (Silicon) 8.3.1 Remove old flat gasket by hand or use metal scrapper using care to prevent damage to
[
seating sur faces.
8. 3. 2.
Clean entire gasket seating sur f aces (both l
primary lid and secondary lid) by using a steel l
wire brush along with acetone as a cleaning solvent and lubricant.
8.3.3 Inspect all seating surfaces for foreign materi41 or nicks which would prevent: proper sealing.
c-8.3.4 Place adhesive on primary cask lid inner gasket seating surface.
8.3.5 Place gasket on primary cask lid inner gasket seating surface and press in place and allow to set until adhesive is set up.
8.3.6 Complete r.ttachments 3 and 4 (if applicable) and distribute in accordance with Section 9.O.
8.4 Secondary Lid Hold Down Stud and Nut Replacement Secondary lid studs may be replaced and/or repaired in the following manner :
8.4.1 Heli-coil insert 8.4.2 Increase depth of tap, drill and retap 1/4" I
using 1" - SUNC-2A stud of appropriate _ length.
Material as specified in LN Drawing No.
E-9414-M-3204, Sheet 2 of 2, Item 16.
1 8.4.3 Complete attachment 4 (if applicable) and distribute in accordance with Section 9.0.
8.5 Ratchet Binder Repair or Replacement j
8.5.1 If ratchet binder binds before primary lid is tightly secute, then perform the following:
ps I
No. -
. I AEvisioN PAGE WM-022 F
10 o'f 15 I
0'
{
a.
Extend ratchet binder far enough to remove spring pin and threadless bolt.
t.
b.
I,ean ratchet binder outward away from cask r
j and extend out to full length.
De caretul not to spin lug ends totally out of binder.
f c.
Clean old lubticant and contaminates L f rom l
l threads using a-steel brush, i,
d.
Install new all purpose lubricant on i
threads and rotate bindet ends all the way into the binder.
e.
Extend binder ends back to the length i
l necessary to reinstall the threadless bolt and spring pin.
f.
Re-tighten down primary lid using ratchet binder.
o 8.5.2 If the above steps did not r epa ir' ratchet binder, then per for m the following:
a.
Loosen binder enough to remove the spring pin and threadless bolt.
b.
Remova tne cotter pin, nut and bolt on lower end of binder.
l c.
Remove the ratchet binder and ship to LN Technologies, Columbia, South Carolina for additional maintenance.
d.
Install new ratchet binder on cask by installing bolt through lower end of binder.
e.
Reinfstall nut on bolt using a new cottet pin.
f.
Reconnect upper end of ratchet and tighten down in accordance with Reference 4.2
NO.
REVISION PAGE
, 1 WM-022 F
11 o f ~ 15 g.
Complete attachment 4 (if' applicable) and dis tr ibut.e in accordance vit.h Section 9.0.
l 9.0 DISTRIBUTION OF MAINTENANCE RECORDS 9.1 Send orignal copy of Attachments 1,2,3, and 4 to f,
LN Technologies, Columbia, SC office, c/o Transportation Supervisor.
9.2 Retain _one copy for registe.;ed User's Cask Manual.
9.3 Additional copies, as may be required, are authorized for registered user's use only.
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nCvisioN PAGC WM-022 P
12 o f 15 LN 142 Primary Lid Gasket Replacement Checklist Cask Set ial Number :
Initials Date 1.
Old gasket removed 2.
Gasket seating surfaces clean and free of foreign material and nicks.
(Step 7.1.3) 3.
Replacement gasket acceptance (Step 7.1.4) 4.
Gasket Inventory No:
5.
Installation completed (Step 7.1.5 thru 7.1.8) 6.
Gasket replaced and provided in accordance with maintenance Procedur e Number WM-022.
Signature Date 7.
Visual inspection of painted alignment guido plates satisfactory?
Yes/No Alignment guide plates repainted?
Yes/No Signature Date 8.
Other Maintenance (describe):
9.
A.
Next scheduled gasket replacement due by:
Date B.
Leak Test of lid gaskets performed in accordance with WM-011.
Next leak test due by:
Date Signature Date
.~
PAGE ny AC vtSION -
WM-022 P
13 o f 15 LN 142 Shield Plug Outer Gasket Replacement checklist Cask Serial Number:
~
Initials Date 1.
Old gasket removed (Step 7.2.1) 2.
Gasket seating surfaces clean and-free of for eign mater ial and nicks.
(Step-7.2.3) 3.
Replacement gasket acceptance 4.
Gasket Inventory No:
5.
Installation completed (Step 7.2.4 thru 7.2.5) 6.
Gasket replaced and provided in accordance with maintenance Procedure Number WM-022.
Signature Date 7.
Visual inspection of painted alignment markers saticfactory7 Yes/No Alignment markers repainted?
Yes/No Signature Date 8.
Other Maintenance (describe):
9.
A.
Next scheduled gasket replacement due by:
Date B.
Leak Test of lid gaskets performed in accordance with WM-Oll.
Next leak test due by:
Date Signature Date
- N o.
90visioM PAGE WM-022 F
14 o f' 1 5 LN 142 Shield Plug Inner Gasket Replacement Checklist Cask Serial Number:
1 l
Initials Date -
1.
Old gasket removed (Step 7.2.1) 2.
Gasket seating surfaces clean and free of foreign material and nicks.
(Step 7.2.3) 3.
Replacement gasket acceptance 4.
Gasket Inventory No:
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5.
Installation completed (Step 7.2.4 thru 7.2.5) l 6.
Gasket replaced and provided in accordance with maintenance Procedure Number WM-022.
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Signature Date 7.
Visual inspection of painted alignment markers satisfactory?
Yes/No Alignment markers repainted?
Yes/No j
1 Signature Date l
l 8.
Other Maintenance (describe):
l 9.
A.
Next scheduled gasket teplacement due by:
i Date B.
Leak Test of lid gaskets performed in accordance with WM-011.
Next leak test due by:
Date Signatur'e Date 1
0 NO RCviSION Pt.GE 1
]
WM-022 F
15 of 15 Attachment. 4 l
l To:
Transpottation Managet l
LN Technologies Corporation 1501 Key Road Columbia, SC 29201 From:
(Name)
(Title)
(Organization)
Description of maintenance:
CERTIFICATION (Organization), certifies that:
(1)
It is a registered user of th e LN 142 cask, USNRC C of C USA /9073/A in accordance with the terms and conditions of 10 CFR 71.12.
(2)
The described maintenance on the LN 142 was accomplished in accordance with LN procedure WM-022.
(3)
Maintenance performed on this cask was accomplished in accocdance with an NRC-approved 10 CFR 71, subpatt H Ouality Assurance Program, docket #
i CA Inspector Sig na t.u t e /Da t e i
i
s a
N O.
REvlSION PAGE h?1-013 P
1 of 7 TITLE GA?O1A SCANNING OF LEAD SilIELDING
[
TECHNOLOGiGS FOR LN TYPE CASKS
.C O RPO A ATIO N 1
4 COPYRIGliT C 1986 BY LN TECilNOLOGIES CORPORATION ALL RIGi1TS RESERVED.
NO PART OF Tills DOCUbiENT htAY BE REPRO-DUCED OR TRANSb11TTED IN ANY FOR11 OR BY ANY biEANS, ELECTRONIC OR b!ECliANICAL, INCLUDING PliOTOCOPYING, RECORDING OR BY ANY INFORhiATION STORAGE AND RETRIEVAL SYSTEbt, WITliOUT PERF11SSION IN NRITING FR0bi LN TECliNOLOGIES CORPORATION, EXCEPT FOR STRICTLY CONTROLLED DISTRIBUTION, FOR EVALUATION PURPOSES.
i n-n nikovAd x6k as%,
'%g/fl[Sk W S=:v I
%A e
OklGfhATOR OATE CHECKED
'OATE
0A 6' DATE~ 7 MANAGER DATE DATMS$Cr b*
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i NO.
REVISION PAGE WM-013 F
2 of 7 TABLE OF CONTENTS Page 1.0 PURPOSE 3
2.0 APPLICABILITY 3
3.0 DEFINITIONS 3
4.0 REFERENCES
AND APPLICABLE DOCUMENTS 3
5.0 PROCUREMENT PROJECT MANAGER 3
6.0 PERSONNEL QUALIFICATIONS 3
7.0 EQUIPMENT 4
0.0 CALIBRATION 4
9.0 PROCEDURE 4
10.0 ACCEPTANCE CRITERIA 5
11.0 DISTRIBUTION 6
Y Figure 1 7
9
MO.
REVISION PAGE WM-013 P
3 of 7 1.0 PURPOSE This generic test specification procedure stntes the minimum l
r eclu i. r eme n t s for garruna scanning of lead shielding for LN; Type casks.
The fabricator shall submit for approval detailed i
l gamma scanning procedures.
l l
i 2.0 APPLICABILITY l*
l l
This generic procedure is applicable to all radioactive shipment casks or radiation shields fabricated for and procured by LN Tech'io..ogies.
l 3.0 DEFINITIONS None
4.0 REFERENCES
AND APPLICABLE DOCUMENTS 4.1 AECU 2967, November 1954 4.2 ASNT Recommended Practice No. SNT-TC-1A, 1980 Edition 5.0 RESPONSIBILITIES Procurement Project Manager - shall inspect and approve all vendor submitted gamma scanning procedures.sgainst this test specification procedure.
6.0 PERSONNEL QUALIFICATIONS Personnel conducting gamma scanning shpil be familiar with l
the detailed procedures and shall be certified Level II or Level III radiographers in accordance with SNT-TC-1A.
l (Reference 4.2) 1 1
9
I N O.
REVISION PAGE a
WM-013 F
4 of 7 7.0 EQUIPMENT The gamma detector shall be a model E120 Eberline or equiva-lent with a pancake probe.
The gamma source shall be either
~
IR 192 or Co60 of sufficient activity in curies to obtain reasonable readings.
The source strength will be dependent on the lead and steel thickness being scanned.
8.0 CALIBRATION A calibration plate will be prepared using defect free lead equal to the nominal lead thickness for the specific cask.
Steel equal to the nominal specified wall thickness will be placed on either side of the lead.
The lead shall be design-ed so that several 1/8" sections of lead can be removed or added to the calibration plate.
The calibration plate will be installed in a fixture in place of the secondary cover as shown in Figure 1.
The source is placed inside the cask at a distance from the plate equal to the inside radius of the cask.
The radiation detector is placed on top of the plate and radiation readings are taken with the meter set on the lowest scale.
The test is then re-peated modifying the lead thickness in increments of 0.125 inches plus and minus the nominal lead th ick ne s s.
At least five points will be meast.ced and a plot of lead thickness vs detector readout is then plotted.
The maximum acceptable reading during the gamma scan shall~be 1.1 times the reading obtained from the nominal lead wall thickness or the extrapo-lated reading for.90 percent of th e nominal lead wall thick-ness, whichever is less.
9.0 PROCEDURE 9,1 Mark a 4-inch grid system on the cask and record the
I No.
ncvtSION PAGE WM-013 P
5 of 7 i
grid syste:n on paper as a permatient record.
9.2 Locate the radia*. ion source along the centerline axes of the cask and position it at the midpoint of the plane of the top row of grid squares.
9.3 Take readings at each grid square on the outside of the l
cask in the plane of the source.
The probe will be in contact with the cask surface when the radiation readings are taken.
j 9.4 Lower the source along the centerline axis to the midpoint of the next row of grid squares and repeat step 9.3.
9.5 Repeat step 9.4 until the bottom row of grid squares have been monitored.
9.6 Position the source along the centerline of the cask at a height equal to one cask radius off the bottom.
9.7 Take and record readings every 12 inches around the bottom circumference of the cask.
9.8 Position the source along th e centerline of the cask at a height equal to one cask radius from the top of the cask.
9.9 Take and record readings every 12 inches around th e top circumference of the cask.
~
i 9.10 Average and record the six highest readings obtained in step 9.7.
l 1
j
. q --
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NO.
l REVISION PAGE l
WM-013 P
6 of 7 9.11 Average and record the six highest readings obtained in step 9.9.
I 10.0 ACCEPTANCE CRITERIA I
10.1 Ti.e radiation reading at any point on the cask circumfera ce shall not exceed the value
^.etermined in section 8.0, except as noted in steps 10.2 and 10.3 10.2 The readings obtained in step 9.7 shall not exceed 125 peccent of the average reading calculated in step 9.10, and they shall not exceed 50 percent of the value determined in Section 8.0.
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10.3 The readings obtained in step 9.9 shall not exceed 125 percent of the average calculated instepf.11, and they shall not exceed 50 percent of the value dbtermined in Section 8.0.
11.
DISTRIBUTION l
Library (2 Copies)
P.ECO Engineering, Richmond, VA.
O L
(
HO.
REVISION PAGE WM-013 F
7 of 7 i
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