ML20149M841
| ML20149M841 | |
| Person / Time | |
|---|---|
| Site: | 07109176 |
| Issue date: | 02/19/1988 |
| From: | CHEM-NUCLEAR SYSTEMS, INC. |
| To: | |
| Shared Package | |
| ML20149M834 | List: |
| References | |
| NUDOCS 8802290136 | |
| Download: ML20149M841 (17) | |
Text
.-
O SUPPLEMENT TO DOCKET NO. 71-9176 FOR CHEM-NUCLEAR SYSTEMS, INC.
CNS 14-215H SERIES A TYPE A RADHASTE SHIPPING CASK (USA /9176/A)
O CNSI Document No. CNSI 9176-S1 Revision No.
O Date:
February 19. 1988 O
8802290136 880219
Rev. 0 2/19/88
- O
'ar or co"'t"'s PAGE NO.
1.0 General Information 3
1.1 Introduction 3
1.2 Applicability 3
1.3 Package Description 3
2.0 Chem-Nuclear Systems, Inc. "As Built" Drawings 3
3.0 Operating Procedures 4
2 3.1 Loading Procedure for 55-Gallon Drums 4
3.2 Unioading Procedure 5
1 3.3 Processing Liners Inside Cask 6
4.0 Acceptance Test and Haintenance Program 8
t 4.1 Initial Acceptance Test 8
4.1.1 Visual Inspection 8
4.1.2 Lifting Lug Load Test and Nondestructive Examination 8
4.1.3 Test for Shielding Integrity (Gamma Scan) 8 4.1.4 Test for Seal Integrity (Leak Test) 8 4.2 Maintenance Program 9
i 4.2.1 Painted Surface 9
i 4.2.2 Structural Members and Helds 9
l 4.2.3 Gaskets and Test for Seal Integrity (Leak Test) 10 4.2.4 Fasteners 11 4.2.5 Ratchet Binders 11 i
5.0 Quality Assurance 11 O
i 2
l l
(0010H)
I
,-----,-----.)
A Rev. 0 2/19/88 O
i.0 c - a u r0R - ION 1.1 Introduction The purpose of this supplement to Docket No. 71-9176 is to provide handling maintenance and initial package acceptance t
i information specific to the model CNS 14-215H Series A Cask l
licensed by the US Nuclear Regulatory Commission (NRC) and i
owned / operated by Chem-Nuclear Systems, Inc.
The Supplement 1
articulated herein provides the necessary guidance for.
j compliance with the applicable requirements of Code of Federal I
Regulations, Title 10 Part 71-(10CFR71).
s 2
i 1.2 Applicability This supplement is applicable only to CNS 14-215H Series A Casks
)
licensed by the NRC under Certificate of Compliance No. 9176 and owned / operated by the Chem-Nuclear Systems, Inc.
}
)
1.3 Packaae Descrintion
)
l The 14-215H Series A Cask is a steel encased, lead shielded cask i
i for low specific activity material.
The cask is a right circular cylinder with a 77.25-inch ID by 80.25-inch IH cavity, i
The wall of the cask contains a lead thickness of 1.88 inches 1
Q encased in 0.38-inch thick inner steel shell and 0.88-inch thick
?
i outer shell. The top cover and cask bottom are made up of two i
)
steel plates with thicknesses of 2.0 inches. The primary cask lid is secured to the cylindrical cask body by eight 1-1/4-inch ratchet binders. An optional secondary lid is centered in the primary lid and is secured to the primary lid with eight j
3/4-inch studs and nuts.
Each lid is provided with a Neoprene gasket seal.
The cask may be provided with an optional 12-gauge stainless steel liner (seal welded along all edges), an optional lid vent line with pipe plug, and an optional 3/4-inch drain line and pipe plug. The cask is provided with four equally l
spaced lifting / tie-down devices.
The primary lid is provided with three lifting lugs and the optional secondary lid is provided with one lifting lug. The cask gross weight is 58,400 l
- pounds, i
2.0 CHEM-NUCLEAR SYSTEMS. INC. "AS BUILT" DRAWINGS 2.1 The CNS 14-215H Series A Cask (s) are fabricated in accordance with the following Drawings:
f 1
2.1.1 Drawing No. 24500-08, Sheets 1 and 2. Revision D.
2.1.2 Drawing No. 24500-05, Revision 2.
j 2.2 The above listed drawings are attached to this supplement.
l l
1 1
I 3
l (0010H) i
)
Rev. 0 2/19/88
(]
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 Loadina 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 catk 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.
3.1.6 Visually inspect cask cavity to verify integrity.
Clean and inspect gasket sealing surfaces.
NOTE:
REMOVE ANY MATERIAL 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.
3.1.7 Load each pallet with a maximum of seven (7) 55-gallon drums.
Shielding effectiveness may be optimized by placing drums with highest surface dose rate near the center to the pallet.
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.
3.1.9 Place shoring where appropriate between drums and cask cavity walls to prevent movement during transport.
3.1.10 Repeat the loading procedure for the next layer of palletized drums.
NOTE:
FOR PRE-FILLED LINERS, USE CRANE TO LOWER LINER INTO CASK CAVITY. USE CAUTION TO PREVENT DAMAGE TO GASKET SEALING SURFACE OR INNER MALLS OF CASK CAVITY.
4 (0010H)
Rev. 0 2/19/88 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 1 10 ft.-Ibs. torque. Return the handles to their storage position.
3.1.13 Install anti-tamper s ol 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 CFR 71.47 and 49 CFR 173.441.
B.
Cask external removable contamination is ALARA and does ngt exceed 22 dpm/cm2 beta-gamma and 2.2 dpm/cmz alpha in accordance with 10 CFR 71.87 and 49 CFR 173.443.
C.
That trailer placarding and cask labeling meet O
oot ia cific>tio", 49 cra a>r* 172-3.1.15 Install cask rain cover (if required) and secure to cask.
4 3.1.16 Check the cavity drain line to determine that the drain 4
plug is properly installed using a pipe thread sealant.
l 3.2 Unloadina Procedure NOTE:
UPON RECEIPT OF CASK, PERFORM SURVEY FOR DIRECT RADIATION AND REMOVABLE CONTAMINATION USING API' ROVED PROCEDURES TO ASSURE COMPLIANCE WITH APPLICABLE REQUIREMENTS OF 10 CFR 20.205.
3.2.1 Remove cask rain cover, if installed.
3.2.2 Loosen and disconnect ratchet binders from cask lid.
3.2.3 Using a lifting sling attached to the three symmetrically located primary lid lif ting lugs, lift the primary lid.
3.2.4 Inspect and verify integrity of lid gasket.
3.2.5 Lay down lid on a suitable protected surface, treating l
lid underside as potentially contaminated.
5 (0010H) j
_ _ - _ l
Rev. 0 2/19/88 O
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.
NOTE:
IF LINER OR DRUMS CONTAIN MATERIALS THAT COULD PRODUCE HYDROGEN GAS AS DESCRIBED IN THE CERTIFICATE OF COMPLIANCE ASSURE PROPER VENTING OR OTHER PROTECTIVE MEASURES ARE TAKEN.
3.2.9 Lift the primary lid onto cask and position using alignment pins and the alignment marks painted on the cast body and lid.
3.2.10 Replace the lid ratchet binders and tighten to 100 1 10 ft.-lbs. torque.
Return the handle
- to their O
storage position.
4 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 1 10 ft.-lbs., using a star pattern.
l 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 Processino Liners Inside Cask (for empty liners pre-installed in cask cavity) i 3.3.1 Remove cask rain cover, if installed.
3.3.2 Loosen and remove the eight (8) nuts that secure the l
secondary lid.
3.3.3 Attach a lifting sling to the lifting lug on the secondary lid, and lift off lid.
Q 3.3.4 Inspect and verify integrity of gasket.
1 6
(0010H) 4
l Rev. 0 l
2/19/88 1 h 3.3.5 Lay down lid on a suitable protected surfact, treating l
lid underside as potentially contaminated.
3.3.6 Inspect and clean gasket sealing surfaces.
3.3.7 Proceed with filling the liner following appropriate personnel precautions and operational procedures.
NOTE:
PRIOR TO CLOSING THE LINER LID AND CASK, ASSURE TEN DAY VENT PERI 00 CAN BE MET PRIOR TO SHIPPING THE CASK.
(SEE HYDROGEN l
GENERATION CONDITIONS OF CERTIFICATE OF COMPLIANCE )
l 3.3.8 Lift the secondary lid onto the primary lid and position using indicated alignment marks and alignment pins.
3.3.9 Replace the eight (8) hex nuts and torque to 100 1 10 ft.-lbs., using a star pattern.
3.3.10 Ensure primary lid ratchet binders have been tightened to 100110 ft.-Ibs. torque and their handles are l
returned to the storage position, p
3.3.11 Install anti-tamper seal on primart and secondary lids.
U 3.3.12 Perform cask survey and verify that the following requirements are satisfied:
A.
Cask external radiation levels do not exceed 200 mR/ hour on contact 10 mR/ hour at 2 meters, and 2 l
rR/ hour in the tractor cab in accordance with 10 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.
i l
C.
That trailer placarding and cask labeling meet DOT specifications 49 CFR Part 172.
3.3.13 Install cask rain cover (if required) and secure to cask.
3.3.14 Check the cavity drain line to determine that the drain plug is properly installed using a pipe thread sealant, o
1 7
(0010H)
Rev. 0 2/19/88 4.0 ACCEPTANCE TEST AND MAINTENANCE PROGRAM 4.1 Initial Accentance Test
)
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 perfc,rmed 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 appropriate drawing, specifications, applicable codes and other 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, finis-3, 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 i
Systems, Inc.
Each lug shall be load tested to one and 1
a half times the calculated load capacity of the lug i
O and held ten minutes as a minimum. After the load test, all welding on the lugs will be examined by magnetic particle testing using the procedure approved 3
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.
l 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 Gama Scan procedure shall specify an acceptance criteria for verification that the lead thickness is not less than 1.88 inches. The Gama Scan must show no greater than ten percent loss of shielding at any point based on a two-inch grid spacing. The Gama Scan shall be performed by l
qualified personnel in accordance with a procedure i
approved by Chem-Nuclear Systems, Inc.
Results of the Gama 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. The S
(0010H)
Rev. 0 2/19/88 O
-sx shan be pneu-tican, pressuri ed to 8 psi and while under pressure, seals are soap bubble checked for leakage acceptance criteria - no visible bubbles.
Test Report shall be documented and included in the Quality Assurance Records of the cast.
4.2 Maintenance ProgrAg The Chem-Nuclear Systems Inc. maintenance requirements for the CNS 14-215H Series A Cask are articulated in this section.
These requirements reflect the specific operating conditions, limitations and regulatory requirements.
4.2.1 Painted Surfaces A.
Painted surfaces shall be cleaned by steam or-pressurized hot water using standard commercial equipment, chemical solutions, and procedures.
There are no special precautions required in this cleaning operation.
8.
Chipped or scratched surfaces shall be retouched or re-painted using Chem-Nuclear Systems, Inc.
approved paints.
O C.
Alignment stripes shall be re-painted when they are chipped, peeled off, faded, or not legible.
Only localized surface preparation (sanding and cleaning) is required prior to re-painting of alignment stripes.
4.2.2 Structural Members and Welds A.
All structural members and welds shall have been checked prior to initial use of the cask.
Inspections of structural members and welds are not required during routine use unless the cask has been involved in an accident or has been lifted improperly or in an overload condition.
In those cases, inspection must be performed as follows:
Dron or Accident - All accessible structural members, welds, ratchet binders, shall be visually inspected.
In addition, all accessible welds must be magnetic particle tested. The Magnetic Particle Test shall be performed by qualified personnel using a Chem-Nuclear Systems, Inc. approved procedure.
Magnetic Particle Test shall meet the requirements of ASME Code, Section O
III, Division 1 Subsection NB, Article NS-5000 and Section V. Article 7.
The Gamma 9
(0010H)
key. 0 2/19/88 Scan must be repeated and evaluated to the initial acceptance criteria. Test reports shall be documented and included in the Quality Assurance Records of the cask.
Imoroner or Overload Lift - All welds on the primary or secondary lid which were used during the time of improper or overload lift shall be load tested and magnetic particle tested.
Load and Magnetic Particle Test shall be performed in the same manner as delineated in the above paragraphs.
B.
Whenever the cask requires total re-painting and is sandblasted, all structural members and welds shall be visually inspected for any indications.
Suspect members and welds shall be magnetic particle tested. Magnetic Particle Test shall be performed in the same manner as delineated in the above paragraphs.
C.
Held repairs if any shall be performed by qualified personnel using Chem-Nuclear Systems, Inc. approved procedures.
Helding shall meet the requirements of ASME Code Section IX.
4.2.3 Gaskets and Test for Seal Integrity (Leak Test)
A.
All Gaskets shall be inspected for proper installation prior to each cask loading.
B All Gaskets shall be replaced once a year as a minimum regardless of condition.
C.
Gaskets which cannot be sealed or are damaged must be replaced or repaired. Damages may include cuts, nicks, chips, indentations, or any other defects apparent to the naked eye which would affect sealing functions.
D.
Any painted surfaces in contact with the gaskets shall be maintained in good condition. Any paint surface defect shall be properly retouched or repaired per paragraph 4.2.1.B.
E Tests for seal integrity shall be performed after the annual replacement of all gaskets as a minimum. A Leak Test shall be performed in the same manner as delineated in above paragraph 4.1.4.
O 10 (0010H)
Rev. O i
2/19/88 l
l s
O 4.2.4 r >t n r-A.
All fasteners shall be inspected for damage after each use.
Festeners shall be replaced if the J
following conditions exist:
Deformed or stripped threads.
Cracked or deformed hers on bolt heads or nuts.
Elongated or scored grip length area on bolts or studs.
Severe rusting or corrosion pitting.
B.
Fasteners shall be inspected for cleanliness and f
presence of lubricant in the threads prior to use. Any fastener found dirty shall be cleaned and re-lubricated.
9 i
4.2.5 Ratchet Binders A.
The ratchet binders are designed for long rugged use with minimal maintenance. All ratchet i
binders shall be inspected for operation and i
general condition prior to use.
i B.
Lubrication is required very infrequently and can i
be achieved by disassembly of the binder and l
lubricating the threads. A good indication for the need to lubricate the ratchet binder will be s
dry threads on the joining bolt or hard operation.
5.0 OUALITY ASSURANCE 5.1 On December 21, 1978 Chem-Nuclear Systems, Inc. filed with the NRC a description if its Quality Assurance Program in accordance with 10 CFR 71.51(a). The Chem-Nuclear Systems, Inc. Quality Assurance Program was initially approved by the NRC on October 26, 1979 and Approval Certificate No. 0231 was issued.
The Chem-Nuclear Systems, Inc, Quality Assurar.ce Program was subsequently re-approved on September 6, 1983, and January 23, 1985. Under this certificate, the continued use of the program is authorized.
5.2 The Licensed CNS 14-215H Series A Casks owned by Chem-Nuclear Systems, Inc. which are certified under the provisions of 10 CFR 71 and built after January 1979 are designed, fabricated, assembled, tested, modified, maintained and repaired in accordance with a Nuclear Regulatory Commission approved Quality Q
Assurance Program (Docket #71-0231).
11 (0010H)
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14-1.15 64 t,t atics A
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.,.. n / a is.4 y1 d; Mt -:ht !pouringprocedures. Lead fill shall be in accordance with CNS
> Twelve gage 304 SS cask liner shall be installed in the cavity 5.
and seal welded along all edges.
6.
Install binder with handle orientated to tighten binder as handle is pulled away from shield body.
7.'
Lockwire primary, secondary lids, drain andyen.t. required for shiprient.i
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[3> Torque 3/4 - 10 UNC nuts to 100 f t-lbs + 10 f t-lbs, 9.
All welds shall be visually examined in accordance with ASME Code Section III, Div. 1 Subsection NB, article NS-5000 and Section 4, Article 9.
- 10. Continuous welds on lifting and hold down lugs shall be magnetic particle or liquid penetrant inspected af ter 125% load test in accordance with ASME code Section 111 Div.1, Subt.ection NB, Article NS-5000, and Section V, Article 7 or 6.
All other welds shall be inspected to these requirements except load test shall not be performed.
As an option, longitudinal shell seam welds may be radiographic inspected per ASME code,Section III, Div. 1, Subsection NB, Article NB-5000, and I
Section V Article 2 in lieu of LP or MP inspection.
4 11.
Torque binders te 100 f t-lbs +.10 f t-lbs.
h(().25diameterventholewith3/4NPTplug.
13.
Binder upper pins are l' diameter with a minimum double shear yield strength of 117,000 lbs.
Lower bolts are l' diameter Su r
GR. 8.
h
An alignment stripe shall appear on the lid as dimensicned and on the cask body to the bottom edge of the lower ratchet binder lug along with the faces of the two lid alignment guides. A good grade enamel shall be used; color, bright orange.
16.
Drum capacity - 14 Payload volume - 217 cu.ft.
Lead Equivalent (in.) - 2.73
- 17. Weight - lbs Empty weight -
38,400 los Payload weight - 20,000 lbs loaded weight - 58,400 lbs TI APEllTUllE CAllD Alm A u Hable On Aperture Car.I D
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