Hose Assembly Inspection and Testing for Highway Tanks
7.2.10 Hose assembly inspection and testing
The hose testing requirements specified in Clauses 220.127.116.11 to 18.104.22.168 shall apply to product delivery and
vapor return hose assemblies that are temporarily connected between the tank or any tank-mounted
accessory and the point of supply or receipt during loading or off-loading but shall not apply to hose
assemblies that are part of the piping system and are pressure tested in accordance with Clause 22.214.171.124.
Despite Clauses 7.1.1 and 8.1.1, a competent facility that has knowledge of the hose testing requirements
need not be registered to test and inspect a hose assembly.
Personnel performing the inspections and test specified in Clauses 126.96.36.199 and 188.8.131.52, respectively,
shall be trained in product and hose safety, inspection and test procedures, and rejection criteria. A record
of this training shall be kept in the employment files of those personnel.
Hose assemblies shall be inspected annually for
(a) damage to the hose cover that exposes the reinforcement;
(b) kinked, flattened, or permanently deformed wire braid;
(c) soft spots when not under pressure, bulging under pressure, or loose outer covering;
(d) damaged, slipping, or excessively worn hose couplings;
(e) loose or missing bolts or fastenings on bolted hose coupling assemblies; and
(f) deteriorated legibility or absence of the serial or identification number and HAWP.
Each hose assembly shall be pressure tested annually in accordance with the following:
(a) A hose assembly having any damage identified in Clause 184.108.40.206 shall be taken out of service and
not be pressure tested until repaired.
(b) The test pressure shall be
(i) for CSA-certified hose assemblies, not less than 2400 kPa (350 psi);
(ii) for gravity off-load hose assemblies (drop hoses), not less than 69 kPa (10 psi);
(iii) for vapour recovery hose assemblies on TC 406 tanks and the equivalent and substitute tanks
identified in CSA B621, not less than 69 kPa (10 psi);
(iv) for vacuum hose assemblies on tanks loaded by vacuum, used exclusively for vacuum loading,
and marked “vacuum only” in place of HAWP as specified in Clause 220.127.116.11, not be less than
69 kPa (10 psi); and
(v) not applicable to vacuum hoses that are
(1) an integral part of a boom assembly or vacuum system on tanks loaded by vacuum; and
(2) used exclusively for vacuum loading; and
(vi) for all other hose assemblies, the greater of 120% of the marked HAWP of the hose assembly and
518 kPa (75 psi).
(c) The following shall not be used to pressurize the hose assembly:
(i) compressed gas;
(ii) compressed air;
(iii) flammable liquid; or
(iv) corrosive liquid.
Note: Water is the recommended test fluid.
(d) The requirements of Item (c) shall not apply to
(i) hose assemblies used to handle aircraft fuel;
(ii) CSA-certified hose assemblies; or
(iii) hose assemblies used in refrigerated liquefied gas service that are manufactured and
documented as conforming to CSA B51 or ASME B31.3 and marked “CSA B51” or “ASME
B31.3” by the hose assembly manufacturer.
(e) Provisions shall be made to protect personnel during testing should failure occur.
(f) To pass the pressure test, the hose assembly shall hold the pressure without bulging, distortion, or
leaks for at least 5 min when isolated from the pressure supply.
A hose assembly that has passed the inspection and pressure test shall be marked in a manner that will
endure the rigours of daily use, either by stamping on an end fitting or by using a securely attached metal
tag or washer, in letters not less than 5 mm (0.2 in) high, with the month and year of the test and
inspection. The depth and location of the stamping shall not degrade the pressure rating of the hose. A
hose assembly not already marked in accordance with the requirements of Clause 18.104.22.168 or 22.214.171.124 shall
be marked as specified in Clause 126.96.36.199.
Following an inspection or test, a report outlining the results shall be prepared by the facility performing
the hose testing and inspection and shall be retained for at least two years by this facility and by the hose
assembly owner. The report need not comply with Clause 7.3 but shall identify the name and address of
the facility responsible for the inspection and test, the hose assembly serial or identification number, the
HAWP, the date, and the nature of the inspection or test.
A hose assembly that is held in stock following an inspection and test shall be marked as described in
Clause 188.8.131.52 with the letters “IS” and the date that it is returned to service, if it is visually inspected in
accordance with Clause 184.108.40.206 immediately prior to its return to service. The next annual inspection and
pressure test shall be performed within twelve months of this in-service date. If the hose assembly is stored
for more than a year, the test and inspection reports shall be retained by the owner until the next annual
inspection and test are completed.
New or repaired hose assemblies shall be visually inspected as specified in Clause 220.127.116.11, tested as
specified in Clause 18.104.22.168, and marked as specified in Clause 22.214.171.124 or 126.96.36.199.
The HAWP for a hose assembly that is not already marked may be determined by referring to
documentation provided by the hose and coupling manufacturer or supplier or by inspecting the hose
and couplings for markings applied during manufacturing that indicate the maximum working pressure
for the component. A HAWP that corresponds to the maximum working pressure of the lowest rated
component of the hose assembly, or the maximum anticipated pressure that the hose is expected to see in
service, whichever is less, shall be marked on a hose that is successfully tested in accordance with
Clause 188.8.131.52. Hose assemblies for which ratings cannot be determined shall not be marked. If not
already marked on the hose assembly, markings shall also be applied to indicate the serial number or
identification number of the hose assembly.
7.2.11 Structural inspection
Tank trailers shall be subjected to an inspection of all structural components, structural welds, structural
components in spaces between or adjacent to compartments in compartmentalized tanks, and areas of
high stress or stress concentration in the tank and frame for cracks and other defects as follows:
(a) Prior to inspection, the tank shall be decontaminated as prescribed in Clause 7.1.3.
(b) The jacketing and insulation shall be removed as necessary, or inspection ports in the jacketing and
insulation shall be used to conduct the required inspection.
(c) Areas to be inspected shall include but are not restricted to
(i) points of attachment between the tank wall and frame components for the suspension system,
upper coupler, and landing gear;
(ii) points of attachment between the ring stiffeners and frame components for the suspension
system, upper coupler, and landing gear;
(iii) seams near the bottom center of the tank;
(iv) critical areas of shape transition such as the bottom of the circumferential seam on dual conic
(v) structural compartments or connecting structures;
(vi) discontinuities in the frame or tank wall;
(vii) areas surrounding a center bottom outlet; and
(viii) any areas identified by the manufacturer or assembler in accordance with Clause 5.10.13.
(d) Welds in critical areas shall be inspected for cracks using dye penetrant or magnetic particle testing.
(e) Following inspection, repair of any defects found, and subsequent re-inspection, the jacketing and
insulation shall be replaced in a manner that will facilitate future inspection of critical areas.
(f) Following the inspection, a written report shall be completed by the inspection facility in accordance
with Clause 7.3. The report shall include a drawing identifying all critical joints and high stress areas