ML20151C800
| ML20151C800 | |
| Person / Time | |
|---|---|
| Site: | 07109145 |
| Issue date: | 05/27/1987 |
| From: | LN TECHNOLOGIES CORP. (FORMERLY LONDON NUCLEAR SVCS |
| To: | |
| Shared Package | |
| ML20151C776 | List: |
| References | |
| WM-031, WM-31, NUDOCS 8807220186 | |
| Download: ML20151C800 (14) | |
Text
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TITLE I
MAINTENANCE AND INSPECTION PROCEDURE FOR TYPE m-TECHNOLOGIES A, SERIES 50 CASKS
.C O APO A ATION 4
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COPYRIGHT C 1987 BY LN TECHNOLOGIES CORPORATION ALL P.IGHTS RESERVED.
NO PART OF THIS DOCUMENT MAY BE REPRO-DUCED OR TRANSMITTED IN ANY FORM OR BY ANY MEANS, ELECTRONIC OR MECHANICAL, INCLUDING PHOTOCOPYING, RECORDING OR BY ANY INFORMATION STORAGE AND RETRIEVAL SYSTEM, WITHOUT PERMISSION IN WRITING FROM LN TECHNOLOGIES CORPURATION, EXCEPT FOR STRICTLY CONTROLLED DISTRIBUTION, FOR EVALUATION PURPOSES.
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REVISION PAGE WM-031 B
2 of 14 TABLE OF CONTENTS Page 1.0 PURPOSE 3
l 2.0
-APPLICABILITY 3
j 3.0 DEFINITIONS 3
4.0 REFERENCES
4 5.0 RESPONSIBILITIES 4
i 6.0 TOOLS AND MATERIALS 5
l i
7.0 PERIODIC MAINTENANCE AND INSPECTION REQUIREMENTS 5
8.0 MAINTENANCE PROCEDURES 7
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9.0 DISTRIBUTION OF MAINTENANCE R13 CORDS 10 I
Attachment. 1.
Inopection and Preuse Repairs 11.
Primary Lid Gasket Replacement 12 Checklist i.
Secondary Lid Gasket Replacement 13 l
Checklist i
j Table 1.
Tools and Materials 14 l
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1.0 PURPOSE This procedure identifies the inspection and maintenance requirements to be followed for all LN Technologies Corporation (LN) Type A.
Series 50 radioactive waste shipping casks.
This procedure ensures that all parts and materials used in maintaining the casks conform to the requirements of the applicable U.S. Nuclear Regulatory Commission (NRC) Certificate of Compliance and that records documenting maintenance are properly maintained.
2.0 APPLICABILITY This procedure is applicable to routine inspection and l
maintenance for all LN Type A, Series 50 shipping casks (Certificate of Compliance USA /9145/A).
Itemn specifically covered under this procedure include:
2.1 Primary lid gasket replacement 2.2 Secondary lid gasket replacement 2.3 Ratchet binder' replacement 2.4 Secondary lid stud / nut replacement 2.5 Leak testing of cask seals 3.0 DEFINITIONS l
3.1 LN - LN Technologies Corporation 3.2 U.S.
NRC - United States Nuclear Regulatory Commission 3.3 C of C - Certificate of Compliance issued by the U.S.
NRC 3.4 Primary lid gasket - Seal placed between the top of the cask body' and the underside of primary lid perimeter.
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-t 3.5 Secondary lid gasket - Seal placed between the top of l
the working opening of the primary lid and the underside of secondary lid.
3.6 Ratchet Binder - Mechanical turnbuckle used in securing the primary lid to the cask body.
]
4.0 REFERENCES
4.1 LN Technologies Corporation Documents 4.1.1 LN Quality Assurance Manual 4.1.2 QA-001 "Procedure and Instruction l
Preparation and Control" 4.1.3 QA-011 "Procedure for Identification, Storage and Retrieval of Quality Assurance Records"
)
4.1.4 WM-Oli "Soap Bubble Leak Test LN Technologies Corporation Type A i
Shipping Casks" i
4.1.5 WM-030 "Operating Procedure for Type A
}
Series 50 Canks" j
4.1.6 LN Drawing No.-5025-M-2010, "LN Type A Transportation Casks - Series 50 Cask General Arrangements" t
4.2 USNRC Documents j
4.2.1 U.S.
NRC Certificate of Compliance USA /9145/A 4.2.2 U.S.
NRC Approval No. 0496 i
5.0 RESPONSIBILITIES I
The Manager, Transportation Services is designated as the project manager for all cask maintenance operations.
He is
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specifically tasked with ensuring that all inspections snd j
maintenance is performed in a timely manner, that all maintenance records are properly maintained and thet i
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5 of 14 maintenance information is distributed to registered cask users in a timely manner.
i 6.0 TOOLS AND HATERIALS 6.1 Table 1 provides a complete list of all items necessary to perform routine maintenance on LN Type A, Series 50 shipping casks.
All materials specified for a particular maintenance action should be available prior to starting the work.
6.2 Materials required for leak testing gaskets are l
specifically identified in LN Procedure No. WM-011, Reference 4.1.4.
7.0 PERIODIC MAINTENANCE AND INSPECTION REQUIREMENTS O
7.1 Inspections Prior to Use Each Type A cask shall be inspected to verify the
-l integrity of the package and the adequacy of the tiedown mechanisms prior to over-the-road movement of the cask.
A complete list of items to be inspected iu provided in Table 1.
Inspection of the lid gaskets should be limited to inspections of the lid (s) actually used during essk j
operation.
For example, if the secondary lid was removed to fill a preloaded disposable liner in the j
cask, the primary lid gasket need not be inspected unless site specific procedures require such inspection.
7.1.1 Inspect the primary lid gasket and seating surface prior to placement on the cask.
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Gasket must be free of defects such as liicks, frays and cuts.
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REVISION PAGE WM-037 B
6 of 14 7.1.2 Inspect the secondary lid gasket and seating surface prior to placement in the primary lid.
The gasket must be free of defects such as nicks, frays and cuts.
7.1.3 Inspect the secondary lid studs for wear caused by cross treading and over torquing.
7.1.4 Inspect the secondary lid nuts for wear caused by cross treading and over torquing.
7.1.5 Inspect the lid lockdown ratchet binders prior to each shipment.
Check for freedom of movement and locking action.
7.1.6 Check ratchet binder handle storage straps for dry-rot or breaks.
7.1.7 Inspect primary lid guide marks for fading or flaking paint.
7.1.8 Inspect secondary lid alignment pins for wear,
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cracks and breaks.
Pins should engage the secondary lid when installed in the primary lid.
7.1.9 Inpsect primary lid alignment pins for wear, cracks and breaks.
Pins should engage the primary lid.
7.1.10 Inspect cask to trailer tiedown cable assemblies prior to each shipment.
Inspect tiedcan cables for broken or frayed wire, ratchet binders for security and trailer anchor points for cracks and other obvious defects.
7.2 Periodic Maintenance 7.2.1 Replace the primary lid gasket at a minimum of every twelve months.
7.2.2 Replace the secondary lid gasket at a minimum l
of every twelve months.
Conduct the soap bubble leak test per Reference 4.1.4.
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8.0 MAINTENANCE PROCEDURES 8.1 Primary Lid Gasket Replacement 8.1.1 Remove the old flat gasket by' hand or use metal scraper, using. care to prevent damage to seating surfaces.
Discard old' gasket material using proper radiological procedures.
8.1.2 Clean the entire gasket seating surfaces (both cask body and lid) by using a steel wire brush along with acetone as a cleaning solvent and lubricant.
8.1.3 Inspect all seating surfaces for foreign material or nicks which would prevent proper seatng and sealing.
8.1.4 Inspect the new replacement gasket for nicks,
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frays and cuts.
Discard unusable materials.
8.1.5 Fit gasket to cask body surface.
8.1.6 Place gasket adhesive on cask body in accord-ance with adhesive directions.
8.1.7 Press gasket into adhesive with hand pressure and allow time recommended on the adhesive directions 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.
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REVISION PAGE WM-031 B
8 o f 14 I
I 45* (a pprox ima telyl
^Ca sk 8;dy Exterior NCa sket Sea ting Area
^
F rima ry Lid Ca ske t Top V iew CASKET JOINT DrTAIL
- JM W W2 Adhe'ive y Ca sket Sea ting Area s
(Side Vlev)
Figure 1 8.1.9 Complete Attachment 2 and distribute in accordance with Section 9.0.
8.2 Secondary Lid Gasket Replacement 8.2.1 Remove the old flat gasket by hand or use metal scraper.
Use care to prevent damage to seating surfaces.
8.2.2 Clean entire gasket seating surfaces (both priary lid and secondary lid) by using a steel wire brush along with acetone as a cleaning solvent and lubricant.
8.2.3 Inspect all seating surfaces 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 Attachment 3 and distribute in accordance with Section 9.0.
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REVISION PAGE WM-031 B
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5 8.3 Secondary Lid Hold-Down Stud Replacement Secondary lid studs may be replaced and/or repaired in the following manner:
8.3.1 Heli-coil insert 8.3.2 Increase depth of tap, drill and retap 1/4" using 3/4" 10UNC-2A stud of appropriate l
length.
Material as specified in LN Drawing No. 5025-M-2010, Sheet 1 of 1.
8.4 Ratchet Binder Repair or Replacement 8.4.1 If the ratchet binder binds before the primary lid is tightly secure, then perform the following:
8.4.1.1 Extend ratchet binder far enough to remove ball lock pin and threadless
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bolt.
8.4.1.2 Lean ratchet binder outward away from cask and extend out to full length.
Be careful not to spin lug ends totally out of binder.
8.4.1.3 Clean old lubricant and cont.aminatos from threads using a steel brush.
8.4.1.4 Install new all purpose lubricant on threads and rotate binder ends all the way into the binder.
8.4.1.5 Extend binder ends back out to the length necessary to reinstall the threadless bolt and ball lock pin.
8.4.1.6 Retighten down primary lid using j
ratchet binder.
8.4.2 If the above steps did not repair ratchet binder, then perform the following:
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8.4.2.1 Loosen binder enough to remove the ball lock pin and threadless bolt.
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REVISION PAGE WM-031 B
10 of l'4 8.4.2.2 Remove the cotter pin, nut and bolt on lower end of binder.
8.4.2.3 Remove the ratchet binder and ship l
to LN Technologies, Columbia, South Carolina for additional maintenance.
8.4.2.4 Install new ratchet binder on cask by installing bolt.through lower end of binder.
8.4.2.5 Reinstall nut on bolt and secure using a new cotter pi..
8.4.2.6 Reconnect upper end of ratchet and tighten down in accordance with Reference 4.1.5.
9.0 DISTRIBUTION OF MAINTENANCE RECORDS 9.1 Send original copy of Attachments 1, 2,
and 3 to l
LN Technologies, Columbia, South Carolina office, c/o Transportation Supervisor.
9.2 Retain one copy for registered User's Cask Manual.
9.3 Additional copies, as may be required, are authorized for registered user's'only.
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REvlSION PAGE WM-031 B
11 of 14 Inspection and Preuse Repairs Cask Model.:
Serial No.:
l Initials Paragraph Descr.4ption SAT Repair Procedure 7.1.1 Primary 1.id YES/NO 8.1 Gasket /f.edting Surfacts 7.1.2 Secon3ary Lid YES/NO 8.2 Gasket / Seating Surfuces 7.1.3 Seconday Lid YES/NO 8.3 Studs 7.1.4 Secondary Lid YES/NO Replace Nuts 7.1.5 Ratchet Binders YES/NO 8.4,
7.1.6 Ratchet Binder YES/NO Replace Handle Storage Straps 7.J.7 Primacy Lid YES/NO Repaint Alignment Marks 4
7.1.8 Secondary Lid YES/NO Replace Alignment Pins 7.1.9 Primdry Lid YES/NO Replace Alignment Pins 7.1.10 Cask Tiedown YES/NO Repair / Replace 1
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Inspect / Repair Completed On:
by Date Technician
- Check if Maintenance is Performed i
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REVISION PAGE.
-WM-031 B
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Primary Lid Gasket Replacement Checklist Cask Model No.:
Serial No.:
Initiais Date 1.
Old gasket removed 2.
Gasket seating surfaces clean and free
-of foreign material and nicks (Step 8.1.3) 3.
Replacement gasket acceptance (Stop 8.1.4) 1 4.
Gasket Inventory No.:
5.
Installation completed (Step 8.1.5 through 8.1.8) 6.
Visual inspecti on of painted ' alignment guide plates satisfactory?
Alignment marks repainted?
YES / NO 7.
Other maintenance (describe):
8.
a.
Next schedule gasket replacement.due by:
Date I
b.
Leak test of gasket performed in accordance with WM-Oll:
Date Signature Date
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REVISION PAGE WM-031 B
13 of 14 Secondary Lid Gasket Replacement Checklist Cask Model No.:
Serial No.:
Initials Date 1.
Old gasket removed (Step 8.2.1) 2.
Gasket seating curfaces clean and free of foreign material and nicks (Step 8.2.3) 3.
Replacement gasket acceptance 4.
Gasket Inventory No.:
5.
Installation completed (Step 8.2.4) 6.
Visual inspection of painted alignment
)
guide plates satisfactory?
YES / NO Alignment marks repainted?
YES / NO 7.
Other maintenance (describe):
8.
a.
Next schedule gasket replacement due on:
Date b.
Leak test of gasket performed in accord-ance with WM-Oll:
Date Signature Date
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Table 1.
Tools and Materials Primary Secondary Ratchet Gasket Lid Gasket Binder Stud / Nut Replacment Replacement Replacement Replacement 1.
Primary Lid Gasket x
2.
Secondary Lid Gasket x
3.
Gasket Scrapper or Clean x
x Metal Scrapper Knife 4.
Steel Wire 3 rush - Manual x
x x
A or Electric j
5*
5.
Acetone (1 quart) x x.
6.
Gasket Adhesive (RTV Silicone x
x m
Adhesive or Equivalent) 7.
Ratchet Binder (s) x 8.
Secondary Lid. Stud (s) x 9.
Secondary Lid Nut (s) x
- 10. All Purpose Lubricant x
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oi rses COA ^ ATi 9 501 ACAO, COLUV8IA, S.C. 29201 (803)256 4355 e
USFRC JUL111988) %
uly 1, 2
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\\1 JUlly ggg f Mr. Charles E. MacDo 2-Chief, Transporthtion Cet Ur cation Branch 1
Division of Fuel Cycle and Material Safety, NMSS u.s. W C @ "s # g ay pon 9
NSS United States Nuclear Regulatory Commission Washington, DC 20555 M 8' #
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Reference:
Dockets No.
71-9151, 71-9145, 71-9120, 71-9073, 71-9159 Drawing E-5025-2005 Mr. MacDonald:
On February 16, 1988, we requested renewal of Certificate of Compliance numbers 71-9151 Ui 11/20/86, 71-9145 LN 7/29/87, 71-9120 LN 4/30/87, 71-9073 LN 2/24/88, and 71-9159 LN 2/16/88, 71-9145 UI 6/1/87, drawing E-5025-2005, which is proprietary information.
These documents which are stamped proprietary / copyrighted information may be placed in the Public Documents Room.
However, these documents are protected by United States copyright laws against unauthorized reproduction or transmittal.
If you have any further questions on this matter, please contact me at (803) 256-4355.
Sincerely, Roger C.
Betow Transportation Supervisor RCB/clh cc:
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44 h weeer ne SNC Grm
a OVERSIZE DOCUMENT PAGE PULLED SEE APERTURE CARDS NUMBER OF OVERSIZE PAGES FILMED ON APERTURE CARDS APERTURE CARD /HARD COPY AVAILABLE FROM RECORD SERVICES BRANCH FTS 492-8989
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