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Certificate 4552

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Transport
Canada
Safety and Security

Transport Dangerous
Goods Directorate
330 Sparks Street
Ottawa, Ontario K1A 0N5
Transports
Canada
Sécurité et sûreté

Direction générale du
transport des marchandises dangereuses
330, rue Sparks
Ottawa (Ontario) K1A 0N5

Equivalency Certificate

(Approval issued by the competent authority of Canada)

Certificate No.: SU 4552 (Ren. 7)

Certificate Holder: Worthington Cylinders GmbH

Mode of Transport: Road, Rail, Air, Marine

Issue Date: February 25, 2015

Expiry Date: March 31, 2020

CONDITIONS

This Equivalency Certificate authorizes Worthington Cylinders GmbH, to sell, offer for sale, distribute, or deliver in Canada, and authorizes any person to handle, offer for transport, transport, or import into Canada, by road or railway vehicle, by aircraft or by ship, cylinders, in a manner that does not comply with sections 5.1 and 5.2, subparagraphs 5.10(1)(a)(ii), 5.10(1)(b)(iii), 5.10(1)(c)(ii), and 5.10(1)(d)(iii), and subsection 5.10(2) of the Transportation of Dangerous Goods Regulations, if:

(a) subject to condition (b), the requirements with respect to Specification

TC-3AAM cylinders in CSA Standard B340-08, "Selection and use of cylinders, spheres, tubes, and other containers for the transportation of dangerous goods, Class 2", March 2008, are complied with;

(b) where cylinder valves with inlet threads that comply with standards other than North American standards are installed, the valves shall be permanently and legibly marked with the identification of the thread using the code system specified in CGA TB-16, Recommended Coding System for Threaded Cylinder Outlets and Threaded Valve Inlets, 2010, published by the Compressed Gas Association Inc., or the complete thread designation (e.g., ISO 228-1 G 1 1/4). The thread identification shall be visible after the valves are installed in the cylinders;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

CONDITIONS

(c) the cylinders do not contain:

(i) hydrogen,

(ii) hydrogen sulphide,

(iii) natural gas,

(iv) carbon monoxide,

(v) gas mixtures containing:

(A) hydrogen sulphide or other free sulphide,

(B) hydrogen or natural gas,

(C) more than 10 percent carbon monoxide, or

(D) carbon monoxide and having a dew point of -47°C or higher at atmospheric pressure,

(vi) any liquified compressed gas, or

(vii) any gas or gas mixture that could cause corrosion, stress corrosion cracking, enhanced fatigue growth or hydrogen embrittlement of the cylinder steel;

Manufacture

(d) the cylinders were manufactured prior to June 2013 at Beim Flaschenwerk 1, A-3291 Kienberg b. Gaming, Austria, in accordance with the specific procedures filed May 13, 2005 and with drawing N5000 230 6411 (Rev. 2) filed on January 14, 2013 with the Transport Dangerous Goods Directorate;

(e) subject to conditions (f) to (v), the cylinders are in conformity with the requirements applicable to specification 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

November 2003 and February 2005, cited in the rest of the certificate as CAN/CSA B339-02;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

CONDITIONS

(f) despite the requirements of Clause 4.3.4 of CAN/CSA B339-02, straight threads may comply with International Standard ISO 228-1:2000, Pipe threads where pressure-tight joints are not made on the threads - Part 1 : Dimensions, tolerances and designation, provided that the requirements of Clause 4.3.5 of CAN/CSA B339-02 are met;

(g) the chemical composition of the steel cylinder corresponds to the chemical composition set out in Table I of Appendix A to this certificate;

(h) cylinders shells are manufactured by the backward extrusion process, and

(i) the cylinder bottoms have a thickness at least two times the minimum design wall thickness when measured within an area bounded by the points of contact between the cylinder and the floor when the cylinder is in a vertical position, and

(ii) metal removal for any purpose other than removal of isolated defects and threading is done prior to the hydrostatic and ultrasonic tests;

(i) in addition to the requirements of Clause 4.13 of CAN/CSA B339-02, a flawed cylinder burst test is performed on three cylinders of each new design.

A sharp part-through longitudinal flaw is introduced into the test cylinders by a means that will not affect the mechanical or metallurgical properties, and

(i) the flaw is at least 10 times the wall thickness in length and has a depth that will cause the cylinder to fail within 20 percent of the cylinder service pressure,

(ii) the cylinder is hydrostatically pressurized to failure at a rate not in excess of l.4 MPa per second, and

(iii) failure is by leakage without crack extension or by plastic fracture with visible evidence of bulging;

(j) for cylinders with a service pressure of 6.9 MPa or more, the wall stress in

Equation 1 of CAN/CSA B339-02 does not exceed 67 percent of the minimum tensile strength as determined by the tensile test or 717 MPa, whichever is the lesser;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

CONDITIONS

(k) the heat treatment furnace is so equipped that:

(i) cylinder temperatures at the beginning and at the end of the austenitizing and tempering soak zone can be monitored and controlled, and

(ii) the temperature of the austenitizing and tempering zones is controlled to plus or minus 10°C;

(l) cylinders are held at the austenitizing temperature for at least 2.4 minutes for each millimeter of maximum cylinder sidewall thickness and are then quenched into a liquid medium which provides a cooling rate not greater than 80 percent of that of water, and

(i) steel temperature on quenching is at least 830°C but does not

exceed 900°C, and

(ii) the tempering temperature is not less than 530°C and cylinders are held at that tempering temperature for at least 2.4 minutes for each millimeter of maximum cylinder sidewall thickness;

(m) hydrostatic testing with determination of volumetric expansion is performed by the water jacket method and the average wall stress limitation used for calculating the rejection elastic expansion (REE) in accordance with

Clause 6.15.2 of CAN/CSA B339-02, is 688 MPa and any cylinder that exceeds the REE is rejected;

(n) the flattening test requirement is flattening to 10 times wall thickness without cracking and the Inspector records the actual degree of flattening attained without cracking;

(o) three Charpy impact specimens, taken from one heat treated cylinder for each lot, are tested, and

(i) each specimen is a V-notch type, size 10 X 10mm, in accordance with ASTM Standard A370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products, published in 2005,


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

CONDITIONS

(ii) where only a reduced size specimen can be obtained, that specimen is the largest obtainable,

(iii) each specimen is taken from the sidewall of the cylinder,

(iv) the axis of the specimen is parallel to the longitudinal axis of the cylinder and the axis of the notch is perpendicular to the surface of the cylinder, and

(v) the average impact properties for the specimens tested at -50°C are not less than 50 J/cm2 for three specimens and not less than 40 J/cm2 for any one specimen;

(p) a hardness test is performed on the cylindrical section of each cylinder after heat treatment and the hardness does not exceed HRc40 and when the result of the initial hardness test exceeds the maximum permitted, two or more retests may be made, but the hardness number obtained in each retest cannot exceed the maximum permitted;

(q) a flawed cylinder burst test is performed on one cylinder selected from each heat of steel in accordance with the test procedure and acceptance criteria set out in condition (g);

(r) tensile strength as determined by the tensile test is at least 1 070 MPa and not more than 1 207 MPa and elongation is at least 12 percent for a 50.0mm gauge length with width not over 38.1 mm and the yield strength is at

least 958 MPa;

(s) each cylinder is ultrasonically inspected after heat treatment in accordance with ASTM Standard E2l3, Standard Practice for Ultrasonic Examination of Metal Pipe and Tubing and the supplements, published in 2004, and

(i) any cylinder with an imperfection giving a response greater than that of a notch equal to 5 per cent of the minimum design wall thickness is rejected,

(ii) where an imperfection requiring rejection occurs on the internal surface of the cylinder, the cylinder is condemned, and

(iii) the manufacturer records the results of ultrasonic inspection for each cylinder serial number and retains this record for the service life of the cylinder;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

CONDITIONS

(t) there is only one reheat treatment for rejected cylinders and the reheat treatment is in accordance with the requirements for the initial heat treatment and any reheat treated cylinders are identified in the Certificate of Compliance and Test Report;

(u) each cylinder is permanently marked in accordance with Clause 4.17 of CAN/CSA B339-02, except the Transport Canada mark, the specification designation and the service pressure are replaced with "TC-SU 4552" followed by the service pressure expressed in bar. In addition to these marks, each cylinder with threads that do not comply with the requirements of Clause 4.3.4 of CAN/CSA B339-02 shall be permanently and legibly marked with the complete thread designation (e.g., ISO228-1 G1 1/4);

(v) the documents referred to in Clause 4.18 of standard CAN/CSA B339-02 are retained by the manufacturer and by the Inspector, as defined in that standard, for the service life of the cylinder;

Requalification

(w) subject to condition (x) of this certificate, cylinders due for requalification are requalified in accordance with the requirements applicable to the specification TC-3AAM set out in CSA Standard B339-08,"Cylinders, Spheres, and Tubes for the Transportation of Dangerous Goods", March 2008;

(x) the requalification period for the cylinders is five years;

(y) the Transport Dangerous Goods Directorate is advised prior to the cylinders being returned to service where cylinders are requalified after having been subjected to fire; and


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

CONDITIONS

(z) the certificate holder reports, any incident involving loss of contents or failure of the cylinders to the Director, Regulatory Affairs Branch, Transport Dangerous Goods Directorate, Transport Canada.

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, the Technical Instructions for the Safe Transportation of Dangerous Goods by Air, the International Maritime Dangerous Goods Code, and the Canadian Aviation Regulationsnot specifically addressed in this certificate.

Signature of Issuing Authority

_____________________________

David Lamarche P. Eng., ing.

Chief

Permits and Approvals Division


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

(The following is for information purposes only and is not part of the certificate.)

Contact Person: Walter Fischer

R&D, Cylinder Standards and Type Approvals

Worthington Cylinders GmbH

Beim Flaschenwerk 1

A-3291 Kienberg b. Gaming

Austria

Telephone: 43-7485-606-501

Facsimile: 43-7485-606-500

E-mail: walter.fischer@wthg.at

Explanatory Note

This Equivalency Certificate authorizes the continued use of high‑strength seamless steel cylinders that were manufactured based on the Specification TC‑3AAM with internal threads other than those in accordance with North American standards as prescribed in CSA Standard B339-02. The applicant has demonstrated that by augmenting testing at manufacture, restricting certain design parameters as well as the types of gases that could be contained, a cylinder of reduced wall thickness could be used with equivalent safety. In addition, the alternative threads are internationally recognized as being suitable for use in gas cylinders and an equivalent level of safety is maintained by requiring that both the thread designation and the Equivalency Certificate number be permanently marked on each cylinder.

Legend for Certificate Number

SH - Road, SR - Rail, SA - Air, SM - Marine

SU - More than one Mode of Transport

Ren. - Renewal


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

APPENDIX A

Manufacture

The steel cylinder chemical composition

(condition (g))

TABLE I

=============================================================

Product Analysis Tolerances

Element Mass Percent Under Minimum Over Maximum

Carbon 0.32 to 0.35 0.02 0.02

Manganese 0.65 to 0.80 0.04 0.04

Phosphorus 0.010 maximum - 0.005

Sulphur 0.005 maximum - 0.002

Silicon 0.15 to 0.30 0.03 0.03

Chromium 0.95 to 1.15 0.03 0.03

Molybdenum 0.15 to 0.30 0.01 0.01

Nickel 0.25 maximum - 0.03

The combined content of micro alloying elements (vanadium + niobium + titanium + boron + zirconium + nitrogen) does not exceed 0.15% and is representative of good steel making practice.


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4552 (Ren. 7)

NOTE

Under Canadian Law, a foreign manufacturer of non-specification cylinders cannot be charged with an offence under the Transportation of Dangerous Goods Act, 1992 for failure to comply with the conditions of an Equivalency Certificate. However, certain remedies under the Act are available to Transport Canada in this eventuality.

These include:

1. detention of dangerous goods and consequently the means of containment containing them (subsection 17(1));

2. detention of the means of containment whether full or empty

(subsection 17(1));

3. directions not to import the means of containment or to return them to origin (subsection 17(3));

4. inspectors' directions (section 19);

5. directions to importers of the means of containment to issue notices of defective construction or recall (subsection 9(2)); and

6. revocation of the certificate, thereby making any use of the means of containment an offence (subsection 31(6)).

If none of the foregoing are adequate, Protective Directions may be issued to prohibit or to control the use of the means of containment (section 32).



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Date modified:
2017-06-19