Transport
Canada
Safety and Security
Transports
Canada
Sécurité et sûreté
Transport Dangerous
Goods Directorate
330 Sparks Street
Ottawa ON K1A 0N5
Direction générale du transport
des marchandises dangereuses
330, rue Sparks
Ottawa ON K1A 0N5
Equivalency Certificate
Certificate No.:
SU 4259 (Ren. 4)
Certificate Holder:
Air Liquide Canada Inc.
Mode of Transport:
Road, Rail, Marine
Issue Date:
September 24, 2012
Expiry Date:
September 30, 2017
CONDITIONS
1. This Equivalency Certificate authorizes Air Liquide Canada Inc., to display the
marks prescribed for cylinder or tube requalification in a manner that does not
comply with section 6 of the Transportation of Dangerous Goods Act, 1992 and
authorizes any person to handle, offer for transport or transport, by road or
railway vehicle, or by ship, cylinders or tubes in a manner that does not comply
with subparagraphs 5.10(1)(a)(i), 5.10(1)(b)(i), and 5.10(1)(d)(i) of the
Transportation of Dangerous Goods Regulations, for cylinder and tube
requalification only, if:
(a) each cylinder and tube requalification is performed by Air Liquide Canada
Inc., in accordance with Appendix A to this certificate;
(b) each cylinder has a water capacity of at least 240 L and has been
manufactured in accordance with:
(i) specification TC-3AM or TC-3AAM set out in National Standard of
Canada CAN/CSA B339-02, “Cylinders, Spheres and Tubes for the
Transportation of Dangerous Goods”, October 2002 as amended in
November 2003 and February 2005, cited in the rest of the certificate
as CAN/CSA B339-02, or
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
CONDITIONS
(ii) the requirements of the regulations for the transportation of dangerous
goods by rail in force before December 5, 1991, and the cylinder has
displayed on it the marks, “CTC-3A” or “CTC-3AA”,
(c) each tube has been manufactured in accordance with:
(i) specification TC-3AXM, TC-3AAXM, or TC-3TM set out in
CAN/CSA B339-02, or
(ii) the requirements of the regulations for the transportation of dangerous
goods by rail in force before December 5, 1991, and the tube has
displayed on it the marks, “CTC-3AX”, “CTC-3AAX”, “CTC SP 1337”,
or “CTC/DOT-3T“, or
(d) the certificate holder marks a “+” sign immediately following the service
pressure marking and the requalification date marking on any cylinder or tube
manufactured in accordance with conditions (b)(ii) or (c)(ii) of this certificate
and which has displayed on it the marks, “CTC-3A”, “CTC-3AA”, “CTC-3AX”,
“CTC-3AAX”, “CTC SP 1337”, or “CTC/DOT-3T“ and is requalified in
accordance with this certificate;
(e) subject to condition (f) of this certificate, the requalification period of each
cylinder or tube requalified in accordance with this certificate is five years;
(f) the requalification period for each cylinder or tube requalified in accordance
with this certificate and with clauses 24.2.2.1(b) and (f) of CAN/CSA B339-02
is 10 years;
(g) where the cylinders or tubes are affixed to a trailer chassis, an exterior
cylinder or tube as well as the rear cabinet is marked with the letters and
numbers “TC-SU 4259” that are of a colour contrasting with the background
and at least 50 mm high;
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
CONDITIONS
(h) the certificate holder reports to the Director, Regulatory Affairs Branch,
Transport Dangerous Goods Directorate, Transport Canada:
(i)
the name and qualifications of each qualified tester and qualified
inspector as defined in Appendix A to this certificate,
(ii)
the location of each facility where testing is conducted, and
(iii)
once per six calendar months, the number of cylinders and tubes
tested, their serial numbers and respective owners, and the results
of testing.
2. This Equivalency Certificate serves as the registration of Air Liquide Canada
Inc., in accordance with Clause 25.3 set out in CAN/CSA B339-02, to requalify
cylinders and tubes as specified in this certificate. Air Liquide Canada Inc.’s
registered mark is:
“265”
Note: The issuance of this Equivalency Certificate in no way reduces the
certificate holder’s responsibility to comply with any other requirements of
the Transportation of Dangerous Goods Regulations not specifically
addressed in this certificate.
Signature of Issuing Authority
Original signed by
_____________________________
David Lamarche P. Eng., ing.
Chief
Permits and Approvals Division
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
(The following is for information purposes only and is not part of the certificate.)
Contact Person:
Jean-Pierre Dumoulin
Technical Manager, Bulk Operations
Air Liquide Canada Inc.
1250 René-Lévesque Ouest
Suite 1700
Montréal QC H3B 5E6
Telephone:
Facsimile:
E-mail:
514-846-3916
514-846-3915
jean-pierre.dumoulin@airliquide.com
Explanatory Note
Air Liquid Canada Inc. has demonstrated that containers requalified by the
acoustic emission test described in Appendix A to this Equivalency Certificate
could be used with a level of safety at least equivalent to those requalified by the
method required by the Transportation of Dangerous Goods Regulations. This
Equivalency Certificate authorizes continued requalification of containers by Air
Liquide Canada Inc. under the Transportation of Dangerous Goods Regulations.
Legend for Certificate Number
SH - Road, SR - Rail, SA - Air, SM - Marine
SU - More than one Mode of Transport
Ren. – Renewal
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
APPENDIX A
REQUALIFICATION
1.
TEST METHOD
Each cylinder or tube shall be visually inspected externally and be subjected to
an acoustic emission test and, when required, to a follow-up ultrasonic or
radiographic examination.
1.1
Applicable Standards
CAN/CSA-B339-02, Cylinders, Spheres and Tubes for the Transportation of
Dangerous Goods, dated October 2002, as amended November 2003 and
February 2005.
Compressed Gas Association, Inc. publication C-6-2007, Standards for Visual
Inspection of Steel Compressed Gas Cylinders, dated 2007.
CAN/CGSB-48.9712-2006, Non-destructive Testing – Qualification and
Certification of Personnel, dated December 2006.
ASTM E569-07, Standard Practice for Acoustic Emission Monitoring of
Structures during Controlled Stimulation, dated 2007.
ASTM E650-97(2007), Standard Guide for Mounting Piezoelectric Acoustic
Emission Sensors, dated 1997, and reapproved in 2007.
ASTM E750-10, Standard Practice for Characterizing Acoustic Emission
Instrumentation, dated 2010.
ASTM E976-10, Standard Guide for Determining the Reproducibility of
Acoustic Emission Sensor Response, dated 2010.
ASTM E1316-11b, Standard Terminology for Nondestructive Examinations,
dated 2011.
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
APPENDIX A
REQUALIFICATION
2.
VISUAL EXAMINATION
Each cylinder or tube shall be visually inspected externally and internally, as
much as the size of any orifice permits, in accordance with CGA C-6-2007.
3.
ACOUSTIC EMISSION TEST
3.1
Scope of test
The entire vessel under test shall be monitored using at least two transducers
mounted at its extremities. The transducers shall be at the same angular
location and approximately 25 mm from the tangent point at the vessel
shoulder.
3.2
Transducers
The transducers shall be of anticoincident piezoelectric construction and
resonant in the range of 75 to 400 kHz and with a sensitivity of at least -65 dB
referred to as 1V/microbar.
3.3
Transducer coupling
Sensors shall be coupled to the vessel using a viscous or solid couplant and
held in place by suitable holders.
3.4
Calibration
The system shall be calibrated using an acoustic emission simulator consisting
of breaking a pencil lead on the surface of the vessel or of an ultrasonic pulse
whose intensity at one metre from the pulser is equal to that of the pencil lead
break. The system gain and threshold shall be set at values that certificate
detection and location of the simulated emission over the surface of the vessel
and that minimize background noise. The precision and accuracy of the
location function shall be recorded at the centre of the vessel between the
transducers.
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
APPENDIX A
REQUALIFICATION
3.5
Pressurization
Hydrostatic pressure shall be applied monotonically from zero to test pressure
as defined by CAN/CSA B339-02, at a rate not exceeding 1.4 MPa per minute.
A method shall be provided to continuously read the pressure. Acoustic
emission data shall be recorded during and after pressurization.
3.6
Interpretation of Results and Follow-up Examination
The vessel shall be subjected to follow-up ultrasonic and visual examination
when the rate of emission exceeds two events per 0.7 MPa, regardless of
signal amplitude, at any one point on the vessel and when the flaw is deemed
active according to ASTM E569-07, or activity is confirmed using the Kaiser
effect. To apply the Kaiser effect, the test is interrupted, the pressure is
reduced by at least 25 percent, and the vessel is repressurized to the
maximum pressure previously attained; if emission is absent during
depressurization and repressurization and reappears when the previous
maximum pressure is exceeded, it shall be considered active. Inspection shall
be carried out by personnel qualified to Level II of CAN/CGSB-48.9712-2006 or
the equivalent, to determine the flaw size. Such examination shall be carried
out over the complete circumference of the vessel over a distance of at least
one vessel diameter in each direction from the sources of emission.
If this threshold is exceeded at a pressure less than the service pressure, the
vessel shall be withdrawn and searched in the emitting zones for flaws of the
“oxidation” type.
If this threshold is exceeded at a pressure equal to or greater than the service
pressure, the vessel shall be withdrawn and searched in the emitting zones
(indicated by the location system) for flaws of the “cracking” type.
Vessels shall be rejected where the depth of the penetration of the flaw through
the vessel wall reduces wall thickness to a value less than the values specified
in CGA C-6-2007. Defects with a depth in excess of 15 percent of wall
thickness and a sharp bottom shall not be tolerated. Vessels with such cracklike defects shall be removed from service or conditioned by removal of the
defect and verification of vessel strength by wall thickness measurement and
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
APPENDIX A
REQUALIFICATION
retesting according to the hydrostatic and acoustic emission testing procedures
described in this certificate. Vessels that pass the combined hydrostatic and
acoustic emission tests can be returned to service.
3.7
Examination records
A document shall be prepared documenting the test conditions, parameters
and results including:
(a) designation of the vessel material;
(b) vessel size and shape;
(c) vessel serial number;
(d) vessel owner/operator;
(e) test location;
(f) test date;
(g) test parameters:
(i) sensor specifications,
(ii) couplant used,
(iii) sensor locations, and
(iv) pressurization schedule;
(h) measured acoustic emission on vessels events as a function of pressure
and location;
(i) location of any areas of emission on vessels where the rate of emission
exceed that specified in condition 3.6;
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
APPENDIX A
REQUALIFICATION
(j) reports of any visual or ultrasonic examinations carried out at areas of
emission on vessels where the rate of emission exceeds that specified in
condition 3.6; and
(k) a statement as to whether the vessel is acceptable for service.
3.8
Markings
Each cylinder or tube requalified according to this certificate shall be marked in
accordance with Clause 24.6 of CAN/CSA B-339-02. The procedure symbol
shall be “AE”.
4.
ACOUSTIC EMISSION TEST PERSONNEL
4.1 Testing shall be carried out by a qualified inspector or under the general
supervision of a qualified inspector either by a qualified tester or by a qualified
operator operating an automated apparatus. Such an automated apparatus
shall have been designed by a qualified inspector and programmed to identify
flaws in accordance with this certificate.
4.2 A qualified inspector shall be a person who:
(a) has:
(i) Level III certification in acoustic emission testing, in accordance with
CAN/CGSB-48.9712-2006 or equivalent, or
(ii) a post secondary degree in a relevant field of engineering or science
and at least five years continuous experience in:
(A) design, fabrication, maintenance, testing and inspection of
cylinders, tubes or other pressure vessels,
(B) design, fabrication and maintenance of acoustic emission test
equipment,
(C) development and formulation of acoustic emission test procedures,
or
(D) metallurgy or nondestructive testing of pressure vessels; and
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Issue Date: September 24, 2012
Equivalency Certificate
SU 4259 (Ren. 4)
APPENDIX A
REQUALIFICATION
(b) at least 50 hours experience in acoustic emission testing of steel pressure
vessels or other load-bearing structures.
4.3 A qualified tester shall be a person who:
(a) has 50 hours training or instruction in acoustic emission testing of
cylinders, tubes or other pressure vessels;
(b) has:
(i) a post secondary degree in a relevant field of engineering or science
and three years experience in acoustic emission testing,
(ii) Level II or Level III certification in ultrasonic testing, in accordance with
CAN/CGSB-48.9712-2006 or equivalent, and five years experience in
ultrasonics, or
(iii) Level II certification in acoustic emission testing, in accordance with
CAN/CGSB-48.9712-2006 or equivalent; and
(c) has 40 hours experience in acoustic emission testing of cylinders and
tubes under the direct personal supervision of a qualified inspector.
4.4 A qualified operator shall be a person who has received at least 40 hours
training or instruction in the operation of the automated test apparatus from a
qualified inspector. Such training or instruction shall cover calibration and
verification of the equipment as well as the test procedure.
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