■ Storage and attenuation tanks ■ Modular and tank construction

■ Pump control and de-ragging technologies

■ Non-return valves ■ Vermin prevention devices

■ Pipe inspection and classification technologies

Installer approvals include: ■ Installation of CIPP

■ Procedures against the Drain Repair Book (DRB)

■ Installation of in-situ spray lining in portablewater pipes

WRc Approved™ certification demonstrates to purchasers that a product is ‘fit for purpose’. This saves the end user time, as they no longer need to audit to validate the claims reference the product/service performance. It alsominimises the risk that they are purchasing something that does not deliver what it promises.

The assessment can be against an existing standard, or for novel productsWRc can use its extensive knowledge of the UK and InternationalWater Industry to either apply existing similar tests or develop appropriate requirements tomimic realworld conditions. This is particularly relevant for situations where technology is evolving quicker than specifications can be developed or updated.

WRc Approved™ certification is of value to UK and International companieswith current approvals including products fromAustralia, Austria, France, Germany, Holland, Ireland, Japan, NewZealand, UK and USA. Since 1995 over 450WRc Approved certificates have been issued, further details about theWRc Approved Scheme can be found at

Companies that have aWRc Approved™ product should be able to provide an approved logo, certificate or Assessment Schedule, all ofwhich have a unique reference number that links to their entry on theWRc Approved™website. This is particularly useful for end users as it enables themto check the exact product that has been certificated and the scope ofWRc’s assessment.


For situationswhere certificationwould be too onerous or time consuming,mechanical and performance testing can be undertaken against existing specifications and standards as a demonstration of the products

14 performance.

A good example ofmechanical testingwork WRc has undertaken is for linings in drainage applications. Suppliers of CIPP lining materials have prepared samples at their premises,witnessed byWRc, and these have beenmechanically tested to determine their short-termflexuralmodulus. Systemswhich meet the relevant requirements receive a WRc letter detailing the lining system components and test results. Suppliers can therefore clearly demonstrate thatwhen correctly installed the productmeets (or exceeds) the relevant requirements. If there are subsequent problemswith the performance of an installed product then the supplier has proof that this is likely to have been caused by faulty installation rather than the systemthat has been supplied.

Thismechanical and performance testing can of course be submitted as part of aWRc Approved™ assessment should the supplier wish to progress this at a later date.

The range of testing thatWRc can undertake includes:

■ Hydrostatic (leak-tightness/infiltration/ exfiltration) testing of patch repair and

lining products

■ Resistance to high pressure jetting ■ Mechanical properties of liningmaterials

■ Underground loading trials (both at WRc’s underground testing facility and ‘in-situ’)

■ Testing of flushable products

■ Testing of products offering solutions to fats, oils and greases (FOG)

So,whilst this is only a snap-shot of the type of testing available to the drainage and other utility sectors it highlights the facility that independent tests allowcompanies manufacturingmaterials or products used in the drainage sector to showthat their ‘goods’ operate at a standard that is recognised by those thatmay be the end-users.

| February 2021 | NextMonth:

Rail&RoadDrainage Contributions by: 8th Feb To:

A huge thank you to everyonewho contributed images and information to thismain feature.

Standards are set across the end- user spectrumwithmajor health & safety standards set by Government (usually) or industry bodieswhich are ultimately enshrined in law. Others are set by the end-users themselves to ensure their own operations and serviceswork to a standard that is expected by their customers.

Whilst some testing is carried by manufacturers to showtheir ‘new’ productsmeet a performance standard and to get the product

‘right’ before it goes on sale, the need for independent testing is probably higher than it ever been.

The rise in litigation for failed products can cost huge sums just to get a case heard let alone to cover any damages thatmay ultimately ensue. So it is vital for all concerned thatmaterials and products and the installation and use of these products can be independently assessed and documented for the protection of all involved parties.

One final note is that end-users need to understand the results of such so their procurement personnelmust be up to speed withwhat is available,what the tests show the capabilities of the products and service providers are andwhich best fits the situation forwhich purchases are beingmade. This maymean that they have to look at best fit before best price. Aswasmentioned above this ours is an industrywhere very often ‘you getwhat you pay’ for nomore and often a lot less! So bear this inmind next time you are looking at purchasing and check product test results and their compliancewith any existing regulations or guidelines to see if they are reallyworth themoney.

Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80