ENplus requirements for wood-pellet traders
ENplus traders (i.e. suppliers) must comply with the following requirements during storage and delivery to end customers (as of version 3.5.11):
- The certificate holder must have adequate technical equipment for the storage and/or transport of high quality wood pellets at his/her disposal. The functions and condition of this equipment must be regularly checked.
- Manipulation areas, silos and conveyor equipment must be regularly checked for soiling and, if necessary, cleaned. This also applies to the loading of external vehicles, as far as it does not involve special vehicles for the exclusive transport of premium pellets of the ENplus- A1 und ENplus-A2 classes. Responsibility for the inspection lies with the certificate holder who delivers the wood pellets. However, this can also be contractually regulated in a different manner.
- The wood pellets must not absorb any moisture, e.g., through contact with condensed water, rain or snow. Condensate formation is to be excluded as far as possible.
- The mixing of wood pellets of different quality (ENplus-A1, ENplus-A2, EN-B, non-certified wood pellets) must be precluded through the conscientious planning of operation procedures and/or the possibility of spatially divided storage, respectively, of spatially divided transport.
- If wood pellets from the respective storage facility shall be delivered to end customers, the storage facility must be equipped with a facility to separate the fine material before filling the transport vehicle. After the separation process, the fine material must amount to a maximum of 1 percent by weight. Reloading from delivery truck or trailers without sieving is forbidden.
- The temperature of the loaded pellets must not exceed 40°C (FprEN 15234-2).
- During the loading process, the driver of the delivery vehicle must assure himself of the quality of the wood pellets by doing a visual inspection.
- Reference samples are to be taken when bulk wood pellets are delivered to the end customer.
- Silo vehicles for the transport to private customers must be equipped with a gauged on-board weighing system. Individual exemptions from this rule can be agreed between the national association and certificate holders for a maximum of 3 years. Such exemptions must be reported to the EPC, however, and can be lifted if repeated complaints from customers are received.
- The transport vehicle must be equipped with a low-abrasion blowing/suction feeding system – this means the delivery pipe should be coated to reduce friction and the connection between pipes should not contain sharp edges looking into the pellet flow.
- Silo vehicles must have a device to extract the supply air from the storage during delivery. National associations can accept other solutions that prevent dust from being blown into the building of the customer. The EPC must be informed about which other solutions will be accepted.
- When a delivery to end customers is made, the transport mechanisms and the store should be checked for irregularities (e.g., missing impact mats or unfavorable pipe angles). The filling level of the store must be estimated before the filling process. Obvious defects of the storage area or existing dust build-up are to be documented on the delivery note and are to be confirmed by the customer, if present.
- When a delivery to end customers is made, a checklist stating all relevant details for the quality of delivery (as proposed by the national association) has to be filled out.
- Drivers with contact to end customers must have an internal training course at least once a year.
You may want to check that your supplier complies fully with these requirements with the site and truck that will be used for your delivery, even if they claim to be ENplus-accredited, as there are a number of ways that suppliers may fudge the issue and imply that you can have more confidence than you ought to have in reality.