ML20055C913
| ML20055C913 | |
| Person / Time | |
|---|---|
| Site: | 07105971 |
| Issue date: | 08/30/1988 |
| From: | Tenorio J GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20055C908 | List: |
| References | |
| PROC-880830, NUDOCS 9006280377 | |
| Download: ML20055C913 (4) | |
Text
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~GENERALhELECTRIC Uf7 0
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1RRADIAT10iiPROCESSiliG RADIOACTIVE MATERIALS SERVICES REMOTE HANDLING OPERATIONS 1
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STANDARD OPERATING PROCEDURE.
U CHAPTE R : CASK /FIRESHIELD SECTioN -
c.S E XVII. MAINTENANCE G.
Cask Seal Gaskets
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Puroose
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d maintenance of the cask seal gasket.
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Aeolicability st o s -
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This procedure is applicable to the cask seal gaskets for the following cask models:
Cask Model Casket Material Thickness /Tvoe 100.
Silicone Rubber-Silicone Aluminum 100 Silicone Rubber 1/4 inch Flat 200 Silicone Rubber Silicone Aluminum F
O 200 Silicone Rubber 1/4 inch Flat g
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600 Silicone Rubber 1/4 inch Flat u-
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A 600 Silicone Rubber Silicone Aluminum d
SIa 700 Silicone Rubber 1/4 inch silicone OGG 1300 Si11 cone Rubber S111 cone.ituminum 1500 Silicone Rubber 1/4 inch-Flat
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1600 Silicone Rubber Silicone Aluminum h
1600.
Silicone Rubber 1/4 inch-Flat a
8400 Neoprene Rubber 1/8 ine,h-Flat E
8400A-Neoprene Rubber 1/8 inch-Flat g
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3.
Soecial Ryouirements a.
Activities involving the cask seal _ gaskets shall be 2O verformed fo11owins the r*9uirementa of the Quality
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Attribute Specification No. 22A9287.
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E b.
The routine inspections shall be documented on the " Cask i
Shipping Checksheet", R-8.
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g 9: d DATE ISSUED AUG 30 988 sunRsEDEsissuE Pact 1
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lNE)[ j h Q Q: ISSUED BY: J. I. Tenorio DATED: 11/4/80 REVIEW D ATE 8/90 1
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GENERAttp- ) E LE CTRIC.
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.v IRRADIATION PROCESSING RADI0 ACTIVE MATERIALS SERVICES REMOTE HANDLING OPERATIONS STANDARD OPERATING PROCEDURE pgn.
CALK /FIRESHIELD esCTION XVII. MAINTENANCE G.
Cask Seal Gaskets Replacement activities shall be documented on the " Type'B-Packaging c.
' Maintenance Checksheet", R 9, and recorded in the Cask PM Logbook, d.
All off-site cask shipments must use an approved gasket.
e.
Seal gaskets shall be visually. inspected prior to each use, f.
Seal gaskets on routinely used casks shall be replaced every twelve months or whenever demaged, which ever occurs first-.
g.
Model 8400 container seal gaskets are not safety related components.
h.
Annual inspections for gasket replacement are conducted prior to assembly,.
every twelve months, or prior to shipment, whichever comes later.
4.
Preparation Procedure a.
Monitor the dose rate with an appropriate instrument.
Remove the cask lid using an appropriate lifting device.
b.
Smear the gasket assembly and determine the activity level using an HP 210 probe.
,c.
Decontaminate the gasket as necessary to conduct the inspection without L
respiratory protection.
Gaskets will be decontaminated to <10,000 cpm total area smearable as measured with an HP-210 probe.
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d.
If the c,ask was used for short-lived radioisotope products, e.g. Mo 99, recove the seal gasket and transfer it to an approved storage area for
- decty, e.
Seal gaskets for the small isotope shipping casks, i.e., 8400, 8400A, may be 6 contaminated using a dishwasher, 5.
Procedure L
a.
Visually inspect the seal gasket for tears, rips, or other major faults that l-could prevent cask sealing.
b.
Simple separation of the silicone seal and support ring may be repaired by application of GE-RTV adhesive, O B88 suranscoes annue navislON 000.
1 PAQs2 OF 4
oAvesesuso J. I. Tenorio 11/4/8C esauso svi, DATsD:
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a 43 SEN ER AL @ ELECTRIC
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1RRADIAT10N PROCESSING x
RADIDACTIVE MATERIALS SERVICES REMOTE HANDLING OPERATIONS STANDARD OPERATING PROCEDURE l
cs4APf an.
CASK /FIRESHIELD MON
-XVII.
MAINTENANCE G.
Cask Seal Gaskets c.
Check the gasket service date on the silicone aluminum type gasket and the installation service date in the cask logbook for flat neoprene or silicone rubber gaskets. Gaskets shall be replaced, as a minimum,_at or before 12 month intervals.
d.
Initial the appropriate item on the " Cask Shipping Checksheet", R 8, for acceptable gaskets, If the gasket is not acceptable, record the reason for the non acceptance on e.
the Checksheet and initial the entry, f.
Replace the failed gacket following Part 6 Reolacement Procedure.
6.
Renlacement Procedure a.
Discard the out of-service or failed gasket as radioactive waste.
b.
Document replacement activities on the " Type B Packaging Mainte.=nce Checksheet", R-9.
Obtain replacement cask seal-gasket from the Area Supervisor.
c.
.d.
New gaskets must be identified with the fiscal week and year of installation-to provide mechanism to determine length of service.
fiscal week - year of installation (39 80) will be vibro etched into ring.
- 2) Standard neoprene or silicone rubber r,askets:
installation service date shall be recorded in the Cask logbook.
Check the gasket while on the cask eurface for proper alignment for holt
.e.
holes and cavity opening.
l f.
Cask leak checks will be performed following SOP XVII:I " Cask Cavity Leak Check" on all Models with the exception of the Model 8000 series.
SUPERSEDE 8 IS9ug REVISION NO.
1 PAGE3 0F 4
DATE ISBUED MOIS kNio 11/4/80 MBUED BY:,
DAT80:
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. g4 SENERAL T El,ECTRIC
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IRRADIATION PROCESSING RADIOACTIVE MATERIAL.S SCRVICES REMOTE HANDLING OPERAT19NS STANDARD OPERATING PROCEDJRE l cuarfan CASK /FIRESHIELD saam0N XVII. MAINTENANCE G.
Cask Seal Gasiats 7.
Documentation a.
Return the completed Checksheets to the Area Supervisor, b.
Record the replacement activities in the Cask PM Logbook.
Initial and date the entry.
c.
The Area Supervisor shall review and sign / initial the Checksheet and/or the the Logbook entries, o
d.
The " Cask Shipping Checksheet" R 8, shall be filed in the customer shipping file; the " Type B Packaging Maintenance Checksheet", R 9, shall be filed in the cask file.
navaissuto AUG 3 0 B88 suesasanas maus navel 0N 880.
1 PAGE4 0F 4
J. I. Tenorio 11/4/8C
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