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Certificate 4369

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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 4369 (Ren. 14)

Certificate Holder: Norris Cylinder Company

Mode of Transport: Road, Rail, Air, Marine

Issue Date: May 31, 2016

Expiry Date: June 30, 2021

CONDITIONS

This Equivalency Certificate authorizes Norris Cylinder Company 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 paragraphs 1.7(a) and 1.7(c), 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), and 5.10(1)(d)(iii), and subsection 5.10(2) of the Transportation of Dangerous Goods Regulations, if:

Selection and Use

(a) subject to conditions (b) and (c) of this certificate, the requirements applicable 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;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

(b) cylinder valves with threads that do not comply with the requirements of Clause 4.3.3 of CSA Standard B339-08, "Cylinders, spheres, and tubes for the transportation of dangerous goods", March 2008, cited in the rest of this certificate as CSA B339-08, are 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", dated 2010, (e.g. 25P or 25E) or the complete thread designation (e.g. M25 x 2 or 25,8 ISO 11363, respectively). The thread identification shall be visible after the valves are installed in the cylinders;

(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 sulphid,

b. hydrogen or natural gas,

c. more than 10 per cent carbon monoxide, or

d. carbon monoxide and having a dew point of -47°C or higher at atmospheric pressure,

(vi) any liquefied compressed gas, or

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


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

Manufacture

(d) the cylinders are or were manufactured at 4818 West Loop 281, Longview, Texas, USA, in accordance with the specific procedures and with drawing No. 901B-B-9156 (models 8HP500 and 8HP500L), 901B-B-9170 (model 8HP550), 901A-A-9562 (model 8HP575), 901A-A-9605 (model HP585), 901A‑A-9630 (model 8HP535), 901A-A-9835 Rev. 03 (models 8HP575C, 8HP550C, 8HP500LC, and 8HP500C) 901A-A-9838 (model 8HP535C), or 901A-A-9839 (model 8HP585C), filed by Norris Cylinder Company with the Transport Dangerous Goods Directorate;

(e) subject to conditions (f) to (y) of this certificate, the cylinders are in compliance with the requirements applicable to Specification TC-3AAM set out in CSA B339-08;

(f) the chemical composition of the steel cylinder corresponds to the chemical composition specified on the cylinder design drawing as set out in Table 1 or Table 2 of Appendix A to this certificate;

(g) the steel is treated with calcium to provide inclusion shape control, and the certificate from the material manufacturer certifies that the steel was so treated;

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

Equation 1, Clause 4.2.1 of CSA B339-08, does not exceed 67 percent of the minimum tensile strength as determined by the tensile test or 717 MPa, whichever is the lesser;

(j) the heat treatment furnace is equipped with:

(i) recording thermocouples capable of determining cylinder temperature at the beginning and at the end of the austenitizing and tempering soak zone, and


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

(ii) fault controls providing uniform temperature in each zone and proper function of the feed mechanism;

(k) cylinders are held at the austenitizing temperature for at least 2.4 minutes for each millimetre of maximum cylinder 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 does not exceed 927°C, and

(ii) the tempering temperature is not less than 593°C for cylinders manufactured of steel corresponding to the chemical composition set out in Table 1 of Appendix A to this certificate or is not less than 557°C for cylinders manufactured of steel corresponding to the chemical composition set out in Table 2 of Appendix A to this certificate, and cylinders are held at that tempering temperature for at least 2.4 minutes for each millimetre of maximum cylinder thickness;

(l) in addition to the new design qualification testing requirements specified in Clause 4.14 of CSA B339-08, a flawed cylinder burst test is performed on a minimum of two representative heat treated cylinders for each new design in the following manner:

(i) an external flaw is machined longitudinally on each representative cylinder to be tested, approximately at mid-length of the cylindrical part of the cylinder, and is located at the minimum wall thickness (tm) of the midsection based on four equally-spaced measurements taken around the circumference,

(ii) the flaw length (l) shall be the overall length of cut and shall have the following value:

Image in permit

where D = nominal design outside diameter(mm),

t = minimum design wall thickness (mm),

(iii)the flaw cutter used to machine the flaw is approximately 12.5 mm in thickness with an angle of 45° and a tip radius of 0.25 ± 0.025 mm. The cutter diameter is 50 mm for cylinders with a design diameter not greater than 140 mm and 65 mm to 80 mm for cylinders with a design diameter greater than 140 mm, and


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

(iv)the flaw has sufficient depth to produce a leak (and not a burst) when each flawed cylinder is tested as follows:

a. each representative cylinder is pressurized at a rate not exceeding 0.5 MPa per second until leak failure occurs at a pressure equal to or greater than the ratio of the measured minimum wall thickness to the minimum design wall thickness (tm/t) times the service pressure, and the total crack length is not greater than 1.1 times the original machined length. This test may be repeated with a less deep flaw if a leak type failure occurs below the minimum pressure as calculated above, or with a deeper flaw if a rupture type failure occurs at a pressure greater than the minimum pressure as calculated above, or

b. each representative cylinder is hydrostatically pressure-cycled until leak failure in accordance with Clause 4.14.4 of CSA B339-08, except that the upper cycling pressure is equal to the ratio of the measured minimum wall thickness to the minimum design wall thickness (tm/t) times the service pressure and the requirement to perform 10000 cycles is not considered as part of this;

(m) in addition to the new design qualification testing requirements specified in Clause 4.14 of CSA B339-08, a flawed cylinder cycle test is performed on a minimum of two representative heat treated cylinders for each new design in the following manner:

(i) an external flaw is machined longitudinally on each representative cylinder to be tested, approximately at mid‑length of the cylindrical part of the cylinder, and is located at the minimum wall thickness (tm) of the midsection based on four equally-spaced measurements taken around the circumference,

(ii) the flaw length (l) shall be the overall length of cut and shall have the following value:

Image in permit

where D = nominal design outside diameter (mm),

t = minimum design wall thickness (mm),


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

(iii)the flaw cutter used to machine the flaw is approximately 12.5 mm in thickness with an angle of 45° and a tip radius of 0.25 ± 0.025 mm. The cutter diameter is 50 mm for cylinders with a design diameter not greater than 140 mm and 65 mm to 80 mm for cylinders with a design diameter greater than 140 mm,

(iv) the depth of the flaw is at least equal to 10 percent of the wall thickness (tm) of the cylinder measured at the flaw location,

(v) each flawed cylinder is hydrostatically pressure-cycled until failure in accordance with Clause 4.14.4 of CSA B339-08, except that the cycling rate shall not exceed 5 cycles/min and the number of cycles attained without failure exceeds 3500 as a mean value of the two cylinders tested but with an absolute minimum of 3000, and

(vi) the following parameters are recorded:

a. pressure range,

b. cycle rate,

c. temperature range,

d. actual flaw length,

e. actual wall thickness,

f. actual flaw depth, and

g. number of cycles obtained without failure;

(n) hydrostatic testing with determination of volumetric expansion is performed by the water jacket method, and any cylinder that exceeds the rejection elastic expansion (REE) developed in accordance with Clause 6.15.2 of CSA B339-08 is rejected;

(o) 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. An alternative bend test in lieu of the flattening test may be performed and if performed, shall be carried out in accordance with ISO 7438:2005, "Metallic materials - Bend Test" on two test specimens obtained by cutting either one or two rings of width 25 mm or four times the wall thickness, whichever is greater. Each test specimen shall be of sufficient length to permit the bend test to be carried out correctly. Only the edges of the test specimen may be machined;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

(p) 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 10 mm in accordance with ASTM A370‑05, "Standard Test Methods and Definitions for Mechanical Testing of Steel Products", dated 2005,

(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 perpendicular 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 45 J/cm2 for three specimens and not less than 35 J/cm2 for any one specimen;

(q) a hardness test is performed on the cylindrical section of each cylinder after heat treatment and the hardness does not exceed HRc40. 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;

(r) at least one representative cylinder taken at random from each lot of 200 or

less is hydrostatically pressurized to failure, and

(i) the rate of pressurization does not exceed 1.4 MPa/s,

(ii) the burst pressure is at least 2.25 times the service pressure,

(iii)the burst tear initiates in the longitudinal direction in the cylindrical portion of the cylinder when the ratio of tangential length to diameter is greater than 2,

(iv)the cylinder does not fragment,

(v) the actual pressure at burst is recorded, and

(vi)if the test requirements are not met, the lot is rejected;


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

(s) tensile strength, as determined by the tensile test, is at least 1069 MPa and not more than 1206 MPa, and elongation is at least 12 percent for a 50.8 mm gauge length with width not over 38.1 mm;

(t) each cylinder is ultrasonically inspected after heat treatment in accordance with ASTM E213-04, "Standard Practice for Ultrasonic Examination of Metal Pipe and Tubing", dated 2004, and

(i) any cylinder with an imperfection giving a response greater than that of a notch equal to 5 percent 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 result of ultrasonic inspection for each cylinder serial number and retains this record for the service life of the cylinder;

(u) 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;

(v) despite the requirements of Clause 4.3.3 of CSA B339-08, taper threads may also comply with the requirements of International Standard ISO 11363‑1:2010, "Gas Cylinders - 17E and 25E taper threads for connection of valves to gas cylinders - Part 1: Specifications", provided the strength is not less than that specified for American Standard Pipe Threads (NPT) in accordance with the requirements of US Federal Standard US-FED-STD-H28, "Screw-Thread Standards for Federal Services";

(w) each cylinder is permanently marked in accordance with Clause 4.18 of CSA B339-08, except the Transport Canada mark, the specification designation and the service pressure are replaced with "TC-SU 4369" 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 4.3.3 of CSA B339-08 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", dated 2010, (e.g. 25P or 25E) or the complete thread designation
(e.g. M25 x 2 or 25,8 ISO 11363, respectively);


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

CONDITIONS

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

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

(z) the documents referred to in Clause 4.19 of CSA B339-08, are retained by the manufacturer and by the Inspector, as defined in that standard, for the service life of the cylinder; and

Requalification

(aa) the certificate holder reports, once per calendar year, a summary of cylinder manufacturing and performance experience to the Director, Regulatory Affairs Branch, Transportation of Dangerous Goods Directorate, Transport Canada.

This Equivalency Certificate serves as the registration of Norris Cylinder Company pursuant to Clause 25.2 of CSA B339-08, to manufacture cylinders of the designs specified herein. Norris Cylinder Company's registered mark pursuant to CSA B339-08, is,

"M-0714" or "Image in permit"

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 4369 (Ren. 14)

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

Contact Person: Larry Iltis

New Products & Compliance Engineer

Norris Cylinder Company

4818 W Loop 281

Longview, TX 75603

USA

Telephone: 903-237-7607 / 903-576-0674

Facsimile: 903-237-7611

E-mail: liltis@norriscylinder.com

Explanatory Note

The TC-3AAM type cylinders have previously been manufactured under a permit granted pursuant to the Regulations for the Transportation of Dangerous Commodities by Rail. The applicant had 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. This Equivalency Certificate authorizes continued manufacture and use of the said cylinders under the Transportation of Dangerous Goods ReguIations, as amended. In addition, this Equivalency Certificate authorizes the use of internal threads other than those in accordance with North American standards as prescribed in CSA B339‑08. The alternative threads are internationally recognized as being suitable for use in gas cylinders of the designs specified herein. An equivalent level of safety is maintained by requiring that both the thread designation and the 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 4369 (Ren. 14)

APPENDIX A

Manufacture

Steel Cylinder Chemical Composition

(condition (f))

TABLE 1 - Norris Steel Purchasing Specification 4130M

Product Analysis Tolerances

Element Mass Percent Under Minimum Over Maximum

Carbon 0.31 to 0.35 0.01 0.02

Manganese 0.40 to 0.60 0.03 0.03

Phosphorus 0.015 maximum - 0.01

Sulphur 0.008 maximum - 0.00

Silicon 0.15 to 0.35 0.02 0.02

Chromium 0.80 to 1.10 0.03 0.03

Molybdenum 0.55 to 0.70 0.03 0.03

Aluminium 0.01 to 0.05 0.00 0.00

Calcium Trace - -

TABLE 2 - Norris Steel Purchasing Specification 4133M4

Product Analysis Tolerances

Element Mass Percent Under Minimum Over Maximum

Carbon 0.31 to 0.35 0.01 0.02

Manganese 0.65 to 0.80 0.03 0.03

Phosphorus 0.010 maximum - 0.01

Sulphur 0.005 maximum - 0.00

Silicon 0.2 to 0.35 0.02 0.02

Chromium 0.90 to 1.10 0.03 0.03

Molybdenum 0.43 to 0.53 0.03 0.03

Aluminium 0.01 to 0.05 0.00 0.00

Calcium Trace - -


Equivalency Certificate

(Approval issued by the competent authority of Canada)

SU 4369 (Ren. 14)

NOTE

Under Canadian Law, a foreign manufacturer of non-specification means of containment 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 is 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