ML20055C922
| ML20055C922 | |
| Person / Time | |
|---|---|
| Site: | 07105971 |
| Issue date: | 10/22/1980 |
| From: | Tenorio J GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20055C908 | List: |
| References | |
| PROC-801022, NUDOCS 9006280405 | |
| Download: ML20055C922 (5) | |
Text
F.
L GENER AL @ ELECTRIC M
IRR ADI ATION PROCES$1NO OPERATION RADIOACTIVE PRODUCTS AND SERVICES o
OPERATING PROCEDURE navisiow CHAPTtt:
XVII. CASK /
SECTION:
I FIRESIIEID MAINTENANCE X.
Metal Jacket Base Nuts I gl 1.
Purpose vl
'Ib define the inspection and replacement procedure for the stainless steel %se nuts in the metal protective jackets (fire-a l
shields).
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8 2.
Applicability 4
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'Ihis procedure is applicable to the stainless steel base nuts for
- h the following cask models:
E Model No.
Drawing No.
Qty. Base Nuts Oi 100 135C5329 P4 4
o 200 106D3852 P10 4
4 1 6 3883 P10 2
OEEO 500 106D3855 Pil 6
600 106D3892 P10 8
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o 700 195F127 P10 8
bf 900 106D3983 P10 2
h Wi 1100 106D3880 P10 4
I 5h k 1400 106D3883 P10 2
bb !h 1500 106D3858 P10 6
h 1600 106D3973 P11 10 bse 3.
Special Requirements Ek EO i a.
Activities involving stainless steel metal protective jacket i
base nuts shall be performed following the requirements of RP&S J
Quality Attribute Specification No. 22A9285.
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DATE issued 10/22/80
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REVIEW D ATE 7/91 i
c-ss GENER AL O ELECTRIC v
IRRADI ATION PR'OCESSING OPER ATION RADIOACTIVE PRODUCTS & SERVICES OPERATING PROCEDURE cuarten sectioN XVII. CASK /FIRESHIELD MAINIDENCE X.
Metal Jacket Base Nuts
-3.
Special Requirements (continued) b.
%e routine inspections shall be docunented on the " Fire: Shield Checksheet", R-7.
c.
ne annual inspection and/or replacement activities shall be cbcumented on the
" Type B Packaging Maintenance / Inspection Checksheet", R-9, and recorded in the Cask PM Iogbook.
d.
mutine inspections are perfomed prior to each assembly.
Annual inspections are performed prior to ar,sembly, every twelve nonths, or prior to shipnent, which j
ever comes later.
4.
Preparation Procedure a.
Take smears and direct readings of the fireshield pallet base to determine radioactive contamination level.
b.
Decontaninate to less than 200 cpn betvganrna and less than 100 dpn alpha
(
contamination (direct reading and total surface smear).
c.
Use wire brush to clean dirt out of threads.
5.
mutine Inspections a.
Visually inspect the threads for excessive wear, galling, or other damage, b.
Use approprhte size tap to chase the threads.
i c.
Actual insertion of a jacket bolt in the nut freely is the acceptance test.
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._o GENER AL $ ELECTRIC
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IRRADIATION PR'OCE55lNG OPERATION RADIOACTIVE PRODUCTS & SERVICES OPERATING PROCEDURE camn ucuou XVII. CASF/FIRESHIELD MAINIDutCE X.
Metal Jacket Base Nuts 5.
Routine Inspections (continud) d.
Initial the appropriate iron on the "Firehield Checksheet", R-7, for acceptable
- nuts, e.
11 nuts are not acceptible, record the reason for the non-acceptance on the CheCKsheet and initial the entry.
f.
Replace the nut (s) follo ting Part 7 Replacement Procedure of this procedure.
6.
Annni Inspection
- a. ' Use the " Type B Packaging Maintenance / Inspection Cnecksheet", R-9, to docment the inspection.
b.
Visually inspect the threads for excessive wear, galling, or other damage, c.
Use appropriate size tap to chase tne threads, if required, d.
Use a hammer to test the soundness of the weld on each nut.
e.
Strike each nut sharply, but not hard enough to cause dtmage, in several places.
If the nut is not dislodged, the weld is acceptable, f.
Initial the appropriate item on the Checksheet (R-9) for acceptable nuts, g.
If the nut (s) are not acceptable, record the reason for non-accep*mce on the Cnecksheet (R-9) and initial the entry.
I h.
Replace the nut (s) following Part 7 Replacement Procedure of this procedure.
cars issuto 10/22/80 sueenseoes issut NEW REVillON NO D PAGE 3 oF 5
issuso nY:
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GENER ALh ELECTRIC
=
IRRADIATION PROCES$1NG OPERATION
~
RADIOACTIVE PRODUCTS & SERVICES OPERATING PROCEDURE-CHAPTER SsCTioN XVII. CASWFIRESHIEID MAINTENANCE X.
Metal Jacket Base Nuts 7.
Replacement Procedure a.
Take direct reading of the base nut using an HP-210 probe.
If area is contamination free, work may be performed in uncontrolled area. If area has contamination present, consult with Area Supervisor and R&EP technician to determine course of action.
b.
Remove damaged nut from base using cold chisel and hamer and/or an abrasive blade grinder.
c.
Use care to avoid cutting or deforming the base plate during nut renoval operations, d.
Discard failed nut as radwaste if contaminated or to scrap metal bin if not con-taminated.
e.
Use an abrasive grinder to renove traces of the previous weld.
f.
Renove paint for approximately 1 inen in the weld area and grind surface to bright shiny metal.
g.
Obtain replacement nut (s) fram the Area Supervisor, h.
Verify proper ASD1 grade identification markings are on the repleany.nt nut',s).
Record on Checksheet (R-9).
- sides,
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issuno aY
, DATsD:
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IRR ADIATION PR'OCESSING OPER ATION
[
RADIOACTIVE PRODUCTS & SERVICES OPERATING PROCEDURE
{
Ct1APf aR.
ssCTION '
XVII; CASK /FIRESHIrlD MAINTENANCE X.
Metal Jacket Base Nuts 7.
Raplacement Procedure (continued) k'. hst soundness of weld by striking the nut seseral tines with a hamer, If not
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dislodged, the weld is acceptable.
8.
Documentation a.
hturn the conpleted Checksheets to the Area Supervisor, b.
Record the replacement and/or R-9 sctivities in the Cask PM logbook.
Initial and date the entry.
r.
P c.
We Area Supervisor shall review and sigVinitial the Checksheets and/or the
')
Iogbook entries.
I d.
We "Fireshield Checksheet", R-7, shall be filed in the customer shipping file;
[
the " Type B Packaging Maintenance / Inspection Checksheet", R-9, shall be filed in f
the' cask file.
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