ML20153H517
| ML20153H517 | |
| Person / Time | |
|---|---|
| Site: | 07109176 |
| Issue date: | 04/21/1988 |
| From: | Paquin P CHEM-NUCLEAR SYSTEMS, INC. |
| To: | Macdonald C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 24250, 611-0124-88, 611-124-88, NUDOCS 8805130042 | |
| Download: ML20153H517 (8) | |
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HEM-NUCLEAR SYSTEMS,INC.
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i 6 Mr. Charles E. MacDonald, Chief
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Transportation Branch
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Washington, D.C.
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REFERENCE:
(1)
Docket No. 71-9176 (2)
Letter from R.
T,. Anderson, CNSI to C. E. MacDonald, US NRC dated February 19, 1988 (3)
Telecon between C. Williams, US NRC and P. Paquin, CNSI dated April 20, 1988
Dear Mr. MacDonald:
SUBJECT:
CNSI SUPPLEMENT TO DOCKET NO. 71-9176 Enclosed are updated pages of the subject document.
These pages have been revised to reflect the Transportation Branch's coments as conveyed to me by Mr. Charlie Williams of your staff.
If you or your staff should have any other coments concerning this document, please feel free to contact me.
Very truly yours, Qgf Patrick L. Paqui Senior Licensin.
ngineer
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PLP/cr
Enclosure:
Updated pages to CNSI Supplement to Docket No. 71-9176, Revision 1, (6 copies)
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SUPPLEMENT TO DOCKET NO. 71-9176 FOR CHEM-NUCLEAR SYSTEMS, INC.-
CNS 14-215H SERIES A TYPE A RADWASTE SHIPPING CASK i
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CNSI Document No.
CNSI 9176-S1 i
-Revision No.
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April 20, 1988 i
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3.0 OPERATING PROCEDURES This section describes the general procedures for preparation, loading, and unloading of the CNS 14-215H Series A Cask. Detailed procedures developed, reviewed, and approved in accordance with the requirements of the CNSI Quality Assurance Program are issued to authorized users.
3.1 Loading Procedure for 55-Gallon Drums (or for installation of pre-filled liners) 3.1.1 Remove cask rain cover, if installed.
3.1.2 Loosen and disconnect ratchet binders from cask lid.
3.1.3 Using a lifting sling attached to the three symmetrically located primary lid lifting lugs, lift the primary lid.
3.1.4 Lay down lid on a suitable protected surface, treating lid underside as potentially contaminated.
3.1.5 Using crane and suitable rigging, remove pallet (s) and any shoring materials from cask cavity.
O 3.1.6 Visually inspect cask cavity to verify integrity.
O Clean and inspect gasket sealing surfaces.
NOTE:
REMOVE ANY MATERIAL OR MOISTURE FROM CASK CAYITY UNDER THE SUPERVISION OF QUALIFIED HEALTH PHYSICS PERSONNEL USING THE NECESSARY H.P. MONITORING AND RADIOLOGICAL HEALTH SAFETY PRECAUTIONS AND SAFEGUARDS.
3.1.7 Load each pallet with a naximum of seven (7) 55-gallon drums.
Shielding effectiveness may be optimiz2d by 1
placing drums with highest surface dose rate near the l
center to the pallet.
NOTE:
IF LINER OR DRUMS CONTAIN MATERIALS THAT COULD PRODUCE HYDROGEN GAS AS DESCRIBED IN THE CERTIFICATE OF COMPLIANCE, ASSURE PP.0PER VENTING OR OTHER PROTECTIVE MEASURES ARE TAXEN.
3.1.8 Attach crane to the lifting ring on the pallet slings and carefully lower into cask cavity, use caution to prevent damage to gasket sealing surfaces in inner walls of cask cavity.
p 3.1.9 Place shoring where appropriate between drums and cask V
cavity walls to prevent movement during transport.
3.1.10 Repeat the loading procedure for the next layer of palletized drums.
4 wees
s Rev. 1 D'O 4/20/88 NOTE:
FOR PRE-FILLED LINERS, USE CRANE TO LOWER LINER INTO CASK CAYITY.
USE CAUTION TO PREVENT DAMAGE TO GASKET SEALING SURFACE OR INNER WALLS OF CASK CAYITY.
3.1.11 Lift the primary lid onto cask and position using the alignment pins and the alignment marks painted on cask body and lid.
3.1.12 Replace the lid ratchet binders and tighten to 100 + 10 ft.-lbs. torque.
Return the handles to their storage position.
3.1.13 Install anti-tamper seal wires on cask lid or ratchet binders.
3.1.14 Perform cask survey and verify _that the following requirements are satisfied:
A.
Cask external radiation levels do not exceed 200 mR/ hour on contact, 10mR/ hour at 2 meters, and 2 mR/ hour in the tractor cab in accordance with 10 (V~'T CFR 71.47 and 49 CFR 173.441.
B.
Cask external removable contamination is ALARA and does not exceed 22 dpm/cm2 beta-gamma and 2.2 dpm/cm2 alpha in accordance with 10 CFR 71.87 and 49 CFR 173.443.
C.
That trailer placarding and cr.sk labeling meet DOT specifications 49 CFR part 172.
3.1.15 Install :ask rain cover (if required) and secure to cask.
3.1.16 Check the cavity drain line to determine that the drain plug is properly installed using a pipe thread sealant.
3.2 Unloading Procedure NOTE:
UPON RECEIPT OF CASK, PERFORM SURVEY FOR DIRECT RADIATION AND REMOVABLE CONTAMINATION USING APPROVED PROCEDURES TO ASSURE COMPLIANCE WITH APPLICABLE REQUIREMENTS OF 10 CFR 20.P.05.
3.2.1 Remove cask rain cover, if installed, n
3.2.2 Loosen and disconnect ratchet binders from cask lid.
3.2.3 Using a liftin slin attached to the three symetrically $ocate! primary lid lifting lugs, lift the primary lid.
(0010W)
Rev. 1
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4/20/88 v
3.2.4 Inspect and verify integrity of lid gasket.
3.2.5 Lay down lid on a suitable protected surface, treating lid underside as potentially contaminated.
3.2.6 After survey by Health Physics personnel, attach crane to liner or drum pallet (s) and remove from cask cavity.
3.2.7 Visually inspect cask cavity to verify integrity.
Clean and inspect gasket sealing surfaces.
NOTE:
REMOVE ANY MATERIALS OR MOISTURE FROM CASK CAVITY UNDER THE SUPERVISION OF QUALIFIED HEALTH PHYSICS PERSONNEL USING THE NECESSARY H.P. MONITORING AND RADIOLOGICAL HEALTH SAFETY PRECAUTIONS AND SAFEGUARDS.
3.2.8 Install new liner or drum pallet (s) in cask.
3.2.9 Lift the primary lid onto cask and position using alignment pins and the alignment marks painted on the cask body and lid.
3.2.10 Replace the lid ratchet binders and tighten to 100 + 10 ft.-lbs. torque.
Return the handles to their storage position.
3.2.11 If CNSI seal is broken on secondary lid,' remove lid and check integrity of gasket.
Reinstall lid and torque nuts to 100 + 10 ft.-lbs., using a star pattern.
3.2.12 Install anti-tamper seals on primary and secondary lids.
3.2.13 Prior to departure from site, ensure that exterior radiation levels (fixed and removable) are below site release and applicable Federal limits.
3.2.14 Ensure proper placarding of cask and trailer.
3.3 Processing Liners Inside Cask (for empty liners pre-installed in cask cavity) 3.3.1 Remove cask rair. cover, if installed.
3.3.2 Loosen and remove tha eight (8) nuts that secure the secondary lid.
p 3.3.3 Attach a lifting sling to the lifting lug on the V
secondary lid, and lift off lid.
3.3.4 Inspect and verify integrity of gasket.
6 (0010W)
(D 4 b/88
\\d 4.0 ACCEPTANCE TEST AND MAINTENANCE PROGRAM 4.1 Initial Acceptance Test i
During and after fabrication of the cask, various. tests and inspections are required prior to the first use of the cask.
The tests and inspections required to be performed are enumerated below:
4.1.1 Visual inspection and. dimensional verification of the entire cask and its accessories shall be performed to verify compliance with the requirements of approariate drawing, specifications, applicable. codes and otler pertinent data indicating qualitative and quantitative acceptable criteria.
All visual inspection shall be carried out either directly or remotely as described hereafter.
The following shall be inspected:
surface condition, dimension, finishes, shape, locations, details, size of holes, cleanliness, etc.
4.1.2 Lifting Lugs Load Test shall also be performed.
The Load Test of all lifting lugs shall be performed in accordance with a procedure approved by Chem-Nuclear Systems, Inc. Each lug shall be load tested to one and p
a half times the calculated load capacity of the lug V
and held ten minutes as a minimum.
After the load j
test, all welding on the lugs will be examined.by magnetic particle testing using the procedure approved by Chem-Nuclear Systems, Inc. and performed by qualified personnel.
Magnetic Particle Test shall meet the requirements of ASME Code Section III, Division I Subsection NB, Article NB-5000 and Section V, Article 7.
Test Reports shall be documented and included to Quality Assurance Records of the cask.
4.1.3 Test for Shielding Integrity shall be performed after the lead pouring operations.
A Gamma Scan shall be applied to verify lead thickness, shielding capacity and to determine existence of any voids or impurities in the poured lead.
The Gamma Scan procedure shall specify an acceptance criteria for verification that the lead thickness is not less than 1.85 inches.
The i
Gamma Scan must show no greater than ten percent loss of shielding at any point based on a two-inch grid spacing. The Gamma Scan shall be performed by qualified personnel in accordance with a procedure approved by Chem-Nuclear Systems, Inc.
Resuits of the Gamma Scan shall be documented and included in the Quality Assurance Records of the cask.
4.1.4 Test for Seal Integrity shall also be performed prior to first use of the cask.
A Leak Test shall be applied to the cask to assure leak tightness of the seals.
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8 (0010W)