Government of Canada navigation bar

Symbol of the Government of Canada

Primary site navigation bar

Certificate 11437

Downloadable version

Canadian flag
Safety and Security

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

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

Equivalency Certificate

Certificate No.: SU 11437

Certificate Holder: Worthington Cylinder Corporation

Mode of Transport: Road, Rail, Air, Marine

Issue Date: August 29, 2014

Expiry Date: August 31, 2019


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

Selection and Use

(a) subject to condition (b) of this certificate, 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) the cylinders do not contain:

(i) hydrogen, compressed,

(ii) hydrogen sulphide,

(iii) natural gas, compressed, with high methane content,

Equivalency Certificate

SU 11437


(iv) carbon monoxide, compressed,

(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 liquefied gas, or

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


(c) the cylinders were manufactured prior to March 2014 in accordance with the conditions of Equivalency Certificate SU 4957 issued by the Transport Dangerous Goods Directorate, Transport Canada;

(d) the cylinders were manufactured in accordance with the specific procedures and with the drawing numbered E-2015 filed on May 7, 1996 by Steel Cylinder Manufacturing Ltd., drawings numbered XK0150, XK0250, XE0150, XF0150 or XF0250 filed on February 24, 2005, drawings numbered XK1050T or XK0250T filed August 10, 2006, drawing numbered XK0350 filed on September 14, 2006, drawings numbered XF0151 or XK0151 filed on July 6, 2007, or drawing numbered XF0450 filed on March 25, 2008, by Worthington Cylinders of Canada Corp., with the Transport Dangerous Goods Directorate;

(e) the Transport Canada mark, the specification designation, and the service pressure marked on each cylinder are as follows:

TC - SU 4957 -

followed by the service pressure expressed in bar;

Equivalency Certificate

SU 11437



(f) subject to conditions (g) and (h) of this certificate, cylinders due for requalification are requalified in accordance with the applicable requirements for specification TC-3AAM set out in CSA Standard B339-08, "Cylinders, spheres, and tubes for the transportation of dangerous goods", March 2008, and cited in the rest of this certificate as CSA B339-08;

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

(h) for cylinders that have been treated for corrosion protection at time of manufacture by a hot-dip galvanizing process, the 10% permanent expansion rejection criterion specified in Clause of CSA B339-08 does not apply. However, hot-dip galvanized cylinders are condemned if the elastic expansion exceeds the rejection elastic expansion (REE) marked on the cylinder. Hot-dip galvanized cylinders are permanently marked on the shoulder at time of manufacture with one of the following model numbers: X7-65, X7-80, X7-100, X7-120, X8-119, or X8-130;

(i) 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;

(j) the documents referred to in Clause 4.19 of CSA B339-08 are retained by the certificate holder and by the independent inspector, as referred to in that standard, for the service life of the cylinders; and

Equivalency Certificate

SU 11437


(k) 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.


Permits and Approvals Division

Equivalency Certificate

SU 11437

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

Contact Person: Steven T. Gentry

Regulatory Affairs Manager

Worthington Cylinder Corporation

200 Old Wilson Bridge Road

Worthington OH 43085


Telephone: 614-438-3057



Explanatory Note

The cylinders were previously authorized for manufacture and use under Equivalency Certificate SU 4957 issued to Worthington Cylinders of Canada Corp. The manufacturing facility has since closed. This Equivalency Certificate authorizes the continued use of the cylinders manufactured prior to March 2014 in accordance with the conditions of Equivalency Certificate SU 4957 under the Transportation of Dangerous Goods Regulations, as amended.

Legend for Certificate Number

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

SU - More than one Mode of Transport

Ren. - Renewal

Equivalency Certificate

SU 11437


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).

The following document is available for downloading or viewing:

To access the Word document (DOC) version you must have a DOC reader installed. If you do not already have such a reader, there are numerous DOC readers available for free download or for purchase on the Internet:

Date modified: