Hygienic design of pumps, homogenisers and dampening devices: Updated EHEDG guideline Doc. 17 (Third Edition, April 2013)
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Posted: 28 August 2013 | Ralf Stahlkopf, Chairman of the Subgroup Pumps, Homogenisers and Dampening Devices, EHEDG | No comments yet
The third revised edition of EHEDG Guideline Doc. 17 was finalised and published in spring 2013. This article highlights and summarises the contents of the updated document which was drafted by a team of 20 international EHEDG experts from equipment manufacturers, the food industry and academia. For more details, please refer to the guidelines list on the EHEDG webpage.
The objective of EHEDG Doc. 17 is to provide a set of minimum require – ments for pumps, homogenisers and dampening devices for hygienic and aseptic applications to ensure that food products are processed hygienically and safely. In standard design, a food pump must be constructed according to hygienic requirements and ensure gentle product handling. For special requirements, the pump should optionally allow for retrofitting (e.g. jacketed pump housing, single, quenched or double mechanical seals).
Typical pump materials (metallic or non-metallic, elastomers and synthetics) and the quality of cast surfaces are indicated and cross references are made to other EHEDG Guidelines. Differences between the EHEDG Guidelines (Europe) and the 3-A Standards criteria (USA) are described in the document. For CIP food pumps, a surface roughness Ra ≤ 3.2μm must be kept. Optionally, on the customer’s request it should be possible to provide surfaces of Ra < 0.8μm. In this respect, 3-A stipulates that for CIP food pumps, a surface finish of Ra ≤ 0.8μm must be observed in principle.
The third revised edition of EHEDG Guideline Doc. 17 was finalised and published in spring 2013. This article highlights and summarises the contents of the updated document which was drafted by a team of 20 international EHEDG experts from equipment manufacturers, the food industry and academia. For more details, please refer to the guidelines list on the EHEDG webpage. The objective of EHEDG Doc. 17 is to provide a set of minimum require - ments for pumps, homogenisers and dampening devices for hygienic and aseptic applications to ensure that food products are processed hygienically and safely. In standard design, a food pump must be constructed according to hygienic requirements and ensure gentle product handling. For special requirements, the pump should optionally allow for retrofitting (e.g. jacketed pump housing, single, quenched or double mechanical seals). Typical pump materials (metallic or non-metallic, elastomers and synthetics) and the quality of cast surfaces are indicated and cross references are made to other EHEDG Guidelines. Differences between the EHEDG Guidelines (Europe) and the 3-A Standards criteria (USA) are described in the document. For CIP food pumps, a surface roughness Ra ≤ 3.2μm must be kept. Optionally, on the customer’s request it should be possible to provide surfaces of Ra < 0.8μm. In this respect, 3-A stipulates that for CIP food pumps, a surface finish of Ra ≤ 0.8μm must be observed in principle.
The third revised edition of EHEDG Guideline Doc. 17 was finalised and published in spring 2013. This article highlights and summarises the contents of the updated document which was drafted by a team of 20 international EHEDG experts from equipment manufacturers, the food industry and academia. For more details, please refer to the guidelines list on the EHEDG webpage.
The objective of EHEDG Doc. 17 is to provide a set of minimum require – ments for pumps, homogenisers and dampening devices for hygienic and aseptic applications to ensure that food products are processed hygienically and safely. In standard design, a food pump must be constructed according to hygienic requirements and ensure gentle product handling. For special requirements, the pump should optionally allow for retrofitting (e.g. jacketed pump housing, single, quenched or double mechanical seals).
Typical pump materials (metallic or non-metallic, elastomers and synthetics) and the quality of cast surfaces are indicated and cross references are made to other EHEDG Guidelines. Differences between the EHEDG Guidelines (Europe) and the 3-A Standards criteria (USA) are described in the document. For CIP food pumps, a surface roughness Ra ≤ 3.2μm must be kept. Optionally, on the customer’s request it should be possible to provide surfaces of Ra < 0.8μm. In this respect, 3-A stipulates that for CIP food pumps, a surface finish of Ra ≤ 0.8μm must be observed in principle.
