ML20236A522
| ML20236A522 | |
| Person / Time | |
|---|---|
| Site: | 07109074 |
| Issue date: | 02/23/1989 |
| From: | Jerome Murphy ANEFCO, INC. |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 25241, NUDOCS 8903170351 | |
| Download: ML20236A522 (12) | |
Text
RETUr:N TO 3DN$
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,o 904 Ethan Allen Hwy.
J P.O Box 433 Ridgefield. Conn. 06877 203*431-3358 1
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MAR 021983 ) C10 Charles E. MacDonald, Chief Transportation Branch
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fGfss Division of Safeguards and Transportation AfAlt stenou NMSS DOCKET CLtan N Washington, D.C.,
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Dear Mr. MacDonald:
This is in response to your December request AP-100 cask.
for an'. update of the SAR for our We are enclosing eight (8) copies of Revision 9 to our SAR for sections 14.0 and 15.0.
The revisions are clearly marked in Section 14, whereas Section 15 has been completely revised.
We believe that all the requested information has been furnished in this response and request that you provide us with the renewal for Certificate No. 9074 for the Model No. AP-100 packaging.
Very truly yours, sd J
l' John %D. Murphy President Encl.
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14.0 OPERATIONAL PROCEDURES i
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a ANEFC0 CASK AP-100 LOADING PROCEDURE I.
l PURPOSE 9'
The purpose and. intent of this procedure is to define the safe L;,
. handling and the proper radiological controls necessary for receiving,
, loading.and dispatching of CASK AP-100 in a safe and' efficient manner.
II..
REFERENCES
'1.
ANSI N 14.10.1, " Administrative Guide for Packaging and Transporting-Radioactive Materials."
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9l 2.
49 CFR 173.400 to 173.478, " Shippers-General Requirements for Packaging Sub' art I' Radioactive Material."
p 3.
10 CFR 20 - Standards'for Protection Against Radiation.
9l 4.
49 CFR 172.427
" Empty-Label".
III.
LIMITATIONS AND PRECAUTION 1.
ANEFC0 -'NRC Certificate of Compliance 9074.
2.
a.
Insure the cask lid seal is in good condition prior to shipment.
b.
-Insure that closure seal replacemen't is current with closure seal 9l replacement schedule.
3.
CAUTION: Always use a calibrated hard torque wrench only,'according to the torque procedure (Attachment "A",) to prevent damage to bolts and cask threads.
4.-- If, while detorquing the cask head, it is determined ' that the head has backed of f unevenly and is binding.. the head must be retorqued and detorquing operations restored.
5.
If any abnormalities are discovered with the cask, cask head, head gasket, or the cask equipment, notify ANEFC0 at the main headquarters, telephone, (203-431-3358) obtain advice on continual use of the equipment and follow such advice.
9 6.
CAUTION:
It is recommended the essk lid gasket be replaced. annually.
l NOTE:
This should not preclude replacement of the gasket if any imperfections should appear or if it warrants the replacement due to l
failure during leak testing.
REVISION:
09 DATE OF ISSUE:
2/17/89 PAGE:
19 0F 28
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X IV.
PROCEDURE ~
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- Utilize' steps 3,.4, 5, and 19 only if' removal of the cask from the~
j trailer.is required for loading.
1.
Upon receiving the cask onsite, perform radiation surveys.'
2.
Position cask and trailer into the handling bay.
- 3.
Detach the tie-downs from the cask.
- 4.
Attach lifting assembly to cask lifting eyes.
- S.
Lif t cask f rom trailer and lower to the bay floor.
6.
Place. poly-sheeting or equivalent onto floor insuring that enough plastic is'in place to cover the floor when the cask lid is placed on it.
7.
Remove the 32 cask lid. bolts. Attach lid lif ting assembly to the
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lid lifting eyes.
- 8. -Slowly lift the AP-100 lid until there is a large enough opening to
.take an internal radiation survey.
(Both Smear Test and Dose Rate Assessment).
9.
Place cask lid onto plastic from step number 6.
10.
Remove the AP-100 lid lifting assembly'if required.
l 9
11.
Inspect cask gasket and sealing surfaces to insure they are in good condition and that all bolt holes line up correctly.
If any imper-fection is discovered, contact ANEFC0 at Ridgefield Office, (203 /
431-3358) for advice on continued use of the equipment.
i 12.
Perform radiation survey of the liner.
13.
Lift the liner and place it into the AP-100 cask cavity.
14.
Place any necessary shoring around the liner, if required.
15.
Attach the cask lid lifting assembly and. place the cask lid onto the AP-100 cask in accordance with positioning marks.
16.
Monitor cask radiation. CAUTION: A potential radiation streaming hazard exists when the cask is loaded when the cask lid is not torqued down.
l 17.
Install the 32 cask lid bolts and torque to 75 ft-lbs.
See Attachment #1.
REVISION:
09 DATE OF ISSUE: 2/17/89 PAGE 20 0F:
28
- CAUTION: USE HAND WRENCH ONLY
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. Install security lead wire' seal.
91 -
18.-
9 19.
Have radiation protection survey the dose rate of the outer surface (of the cask to develop stay time. limits during torquing). ' Radiation protection should also perform swipe test,of the cask's outer' surface to determine if any loose contamination is present.. External radiation doses' and surf ace contamination shall conform with $71.47 'and $71.87 (1) respectively of 10 CFR..
L 20.
Check the cask surf aces for contamination. Decon cask surfaces if necessary.
21.
Load the cask onto the trailer and fasten tie-downs.
22.
Perform the final ~ cask survey on the trailer. Attach the appropriate labeling and placards.
23.
Authorize the shipment to the disposal' site, when the shipping requirements are met and all shipping documents-are complete.
24.
Notify ANEFCO, Inc. (203/431-3358) that the shipment is'in route to_the disposal site.
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REVISION:.
09 DATE OF ISSUE:
2/17/89 PAGE:
22 op:
28
---__________________________a
ANEFC0 CASK AP-100 UNLOADING PROCEDURE I.
PURPOSE i
9 The purpose and intent of this procedure is to define th,e safe handling and.the proper radiological controls necessary for receiving, unloading and dispatching of cask AP-100 in a safe and efficient manner.
II.
REFERENCES 1.
ANSI N 14.10.1, " Administrative Guide for Packaging and Transporting Radioactive Materials."
9l 2.
49 CFR 173.400 to 173.478, " Shippers General Requirements for Packaging Subpart 1 Radioactive Materials."
3.
10 CFR 20 - Standards for Protection against Radiation.
9 4.
49 CGR 173.427 - Empty Label.
III.
LIMITATIONS AND PRECAUTIONS 9
Frior to receipt of the cask, procedures shall be in place in compliance I
with the instructions used in 10 CFR 20.205.
1.
ANEFC0 - NRC Certificate of Compliance 9074.
2.
Insure the cask lid seal is in good condition prior to shipment.
i l
3.
If while detorquing the cask lid it is determined that the lid has l
backed off unevenly aqd is binding, the lid must be retorqued and detorquing operations restored.
4.
CAUTION: A potential radiation streaming hazard exists when the cask is loaded with the cask head not torqued down.
]
IV.
PROCEDURE
- Utilize steps 3, 4, 5, and 19 only if removal of the cask from the trailer is required for unloading.
9l 1.
Ensure that a copy of the check list for this procedure is on hand for use during all phases of cask handling.
2.
Upon receiving the cask onsite, perform radiation surveys.
3.
Position cask and trailer into the handling bay.
- 4.
Detach the tie-downs from the cask.
- CA TION: USE RAND WRENCH ONLY REVISION:
09 DATE OF ISSUE:
2/17/89 PAGE:
23 0F:
28
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- 5.
Attach lifting assembly to cask lifting eyes, j
- 6.
Lift cask from trailer and lower to the bay floor.
7.
Place poly-sheeting or equivalent onto floor insuring that enough plastic is in place to cover the floor when the cask lid is placed on it.
I 8.
Remove the 32 cask lid bolts. Attach lid lif ting assembly to the lid lifting eyes.
9.
Slowly lif t the AP-100 lid until there is a large enough opening to take an internal radiation survey.
(Both Smear Test and Dose Rate Assessment).
10.
Place cask lid onto plastic from step number 6.
11.
Remove the AP-100 lid lifting assembly if required.
12.
Perform radiation survey of the liner.
13.
Lift the liner and remove it from the AP-100 cask.
9 14.
Clean cask interior walls and perform radiation survey to ensure that all loose contamination is removed from interior walls. Use both dose rate and smear test. Radiation shall conform with 10 CFR 71.87 (i) (1) for allowable non-fixed radioactive contamination.
9 15.
Inspect cask gasket and sealing surfaces to insure that they are in good condition and that all bolt holes line up correctly.
If any imperfection is discovered, contact ANEFC0 at Ridgefield Office (203/431-3358) for advice on continued use of the equipment.
l 16.
Replace any internal shoring inside cask if utilized.
17.
Attach the cask lid lifting assembly and place the cask lid onto the AP-100 cask in accordance with positioning marks.
18.
Monitor cask radiation.
19.
Install the 32 cask lid bolts and hand tighten.
See Attachment #1.
20.
Monitor and record the cask radiation levels.
21.
Check the cask surf aces for contamination. Decon cask surfaces if necessary.
- CAUTION:
USE HAND WRENCH ONLY l
REVISION:
09 DATE OF ISSUE:
2/17/89 PAGE:
24 0F:
28
[______-________
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4.
9 22.
Radiation protection should perform swipe test of the cask's outer surface to determine if any loose contamination is present. Radiation
. shall conform with 10 CFR 71.87 (1) (1) for allowable non-fixed I
radioactive contamination.
23.
Load the cask onto the trailer and fasten tie-downs.
24.
Perform the final cask survey on the trailer. Attach the appropriate labeling and placards in accordance with 49 CFR 173.427, 25.
Authorize the shipment to leave disposal site, when the shipping requirements are met and all shipping documents are complete.
- 26.. Notify ANEFCO, Inc. (203/431-3358) that the shipment is leaving the disposal site l
REVISION:
09 DATE OF ISSUE:
2/17/89 PAGE:
25 0F:
28
I l
I 15.0 ACCEPTANCE TESTS AND MAINTENANCE PROGRAM 15.1 Acceptance Tests i
The following are tests to be performed on the ANEFC0 AP-100 cask and i
any packages prior to their first use:
i l
l 15.1.1 Visual Inspection The cask and any packages will be checked to confirm an acceptable exterior finish to assure compatibility with decontamination equipment.
This inspection will include weld porosity, rough surfaces, sharp edges and other conditions to insure realistic decontamination. Any imper-fections that are found will be corrected and the external finish will be repolished prior to first use.
15.1.2 Structural and Pressure Tests 15.1.2.1 Structural Tests The cask lifting pads will be tested with a load equivalent to 1-1/2 times the expected gross weight.
If any deformations of the lifting pads are found, the design will be re-evaluated, pads reinforced as necessary and the tests repeated.
15.1.2.2 Pressure Tests After cask fabrication is complete, the cavity will be subjected to a pressure test to demonstrate structural integrity.
Each chamber to be tested will be filled with water and pressurized to 10.0 psig.
This pressure will be maintained for 10 minutes. No evidence of leakage or mechanical deformation will be accepted during this period.
For the purposes of this test, gaskets other than service gaskets may be used.
15.1.3 Leak Test After the pressure test is complete, the cask will be assembled with a service gasket, and the cavity will be subjected to a leak test.
The cavity will be pressurized to 10 psig with a gaseous mixture containing at least 10% of a test gas to which the leak detector is sensitive. Testing may be done by using a helium mass spectrometer or a halogen leak detector if the testing procedure has been demonstrated to have a sensitivity equivalent to 1 cm3 (STP) of air per hour at the differential pressure used in the test. All accessible welded and mechanical joints will be surveyed.
Any indication of leakage will require repair and retesting of the cask.
REVISION:
09 DATE OF ISSUE:
2/17/s9 PAGE:
26 0F:
28
[
l 15.1.4 Component Testing The installed performance of the lid seals and the pressure and
. gamma test port are verified under the pressure test.
The AP-100 cask does not use valves, rupture disks or cooling systems.
15.1.5 Shielding Integrity Test The manufacturer will prepare a gamma probe procedure which includes information concerning: (1) the electronic equipment, (2) the radiation source and strength, (3) the calibration standard for both scanning and probing, (4) the grid pattern, (5) the scintillation crystal size, (6) the positioning equipment, (7) the method of reading and recording the radiation detected, (8) the measuring technique, and (9) the acceptance requirements. The procedure that is used must be acceptable to the Inspector prior to its application, and he will be notified so that he may audit the inspection if he desires. The procedure and all the results will be made part of the fabrication record.
Scanning will be at low, middle and high bands, with sufficient overlap for the full circumference of the cask.
Scanning will also be on concentric circles and on radial grid lines.
Results shall verify that no void areas exist in the sidewall or lid assembly in excess of 0.25" lead.
The scanning paths shall be reviewed to assur'e that 1007. of the external surface has been examined.
15.1.6 Thermal Acceptance Tests The AP-100 cask will require to reject less than 150 watts.
The calcu-lations show the capability for this service by a large margin.
15.2 Maintenance Program The maintenance program is established to ensure continued performance of the cask. The cask will be routinely inspected prior to each departure to the reactor site.
In addition, periodic inspections of the cask will be made requiring testing and/or replacement of critical components as fo11cvs 15.2.1 Structural and Pressure Tests 15.2.1.1 Structural On an annual basis, the lifting pads will be closely inspected for cracks or other signs of failure.
If signs of failure are found, the lifting pads will be replaced and load tested.
If cracked or deformation exceeds 3/8", repair or replace as deemed necessary.
l REVISION:
09
__pATE OF ISSUE:
2/17/30 PAGE:
27 0F:
28 i
= _ - - -. - - - _ _ _ _ -. - - -. -
15.2.1.2 Pressure Tests On an annual basis, the cask cavity will be hydrostatically pressure tested to 10 psig.
Should a J eak be found, it will be repaired and the test rerun.
15.2.2 Leak Tests On an annual basis, the containment cavity will be pressurized to 10 psig. The pressure level will be checked over a 10 minute interval and no pressure loss or evidence of leakage during this period will be accepted. Should a pressure drop be noted, the cause will be found, repaired and the test rerun. An annual leak test will be performed using a helium leak detector with a sensitivity of 1 x 10-3 atm-cc/sec.
If leakage in excess of 10 cc/hr is detected, the gasket will be replaced and the leak test will be repeated until acceptable results are obtained.
15.2.3 Subsystem Maintenance There are no subsystems provided for the AP-100 cask which require maintenance.
15.2.4 Valves, Rupture Discs and Gaskets on Containment Vessel The gaskets and sealing surfaces will be visually inspected before and after each use of the AP-100 cask. The gaskets will be tested during the annual pressure and leak tests, described in Sections 15.2.1.2 and 15.2.2. The gaskets will be replaced after twelve (12) sequen:ial uses or if found uriaatisf actory during the annual leak test. There are no other components of the AP-100 cask which need maintenance.
Each of the 32 closure bolts will be inspected before use to insure that the screw threads are intact. Bolts which bind when manually installed in a test tap shall be repaired or replaced.
Each bolt hole will be checked before use by manually checking bolt rotation with a test bolt.
Should test bolt bind, tap hole will be repaired before use.
j 15.2.5 shielding i
Before each shipment, a gamma radiation survey of the cask will be
)
conducted to verify that the cask is within acceptable limits for shipment.
15.2.6 Thermal The thermal load capacity does not require thermal tests.
REVISION:
09 DATE OF ISSUE:
2/17/89 PAGE:
28 0F:
28 I
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