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TECHNICAL
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MORE ABOUT THE STANDARD
Why it is important for specifiers/consultants/
authorities to use the standard
members who are compliant, conforms to world best
practise and that consumers and members of the
Reputable tank manufacturers who focus on what broader construction, plumbing, landscaping, and
built industry are better informed when choosing
drives value in the industry will want to comply
to purchase a rotomolded polyethylene tank. For
and will go through the independent auditing
example, the strength and durability of a polyethylene
process as prescribed by ARMSA to qualify for
tank are directly proportional to the amount and
the SANSÂ 1731:2017 standard. And similarly,
quality of polymer used for a specific size tank.
if specifiers, consultants, and the like wish to
The standard
was specifically
developed to
withstand the
harsh weather
conditions
experienced in the
southern African
market.
provide a high-quality service to their clients
and protect their own reputation for delivering a
quality product, they should use compliant tank
manufacturers only. Only a SANSÂ 1731:2017
certification guarantees tanks built to the highest
international specifications.
Key points or aspects of the standard
SANS 1731:2017 was specifically developed to
withstand the harsh weather conditions experienced
in the southern African market and is the culmination
of work and references to other tank standards in the
world, with specific reference to Australia and India.
The rationale for the tank standard is to ensure
that the quality of tanks produced by ARMSA
February 2018 Volume 23 I Number 12
The standard gives specific criteria in terms of the
source of raw material, ultraviolet protection, overall
weight, wall thickness, light penetration, stress
crack resistance, and impact strength for a range of
different sizes.
Other elements of the compliance audit for
certification include checking for actual storage
volumes versus stated volumes, the overall
appearance of the finished tanks, the requisite
number and type of fittings, and the date of
manufacture. In addition, it seeks to ensure that the
production methods used to manufacture the tanks
comply with best practise and that traceability is built
into the manufacturers’ control systems. PA
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