RO
SR EN 489:2004
District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene
This European Standard specifies requirements for joints, made under field conditions, between adjacent preinsulated pipes and/or fittings in district heating networks. The specified general requirements are also valid for field made T-branches, bends, reducers, caps, etc. The standard covers jointing of steel service pipes by means of fusion welding, the connecting of casing ends with joint casings and the thermal insulation with poured rigid PUR foam. This standard specifies methods for type tests of complete joints and PUR-foam for joints under laboratory conditions. The type tests apply only to straight casing joints which are not-welded. The requirements of this standard can also be applied to casing pipe weldings/connections of on site made fittings. The requirements of this standard are aiming at obtaining a technical life of the joints of at least 30 years.
Status :
Withdrawn
Approval date : 8/23/2004
Publish date : 8/24/2004
Withdrawal date : 8/31/2009
Number of pages : 28
ICS : 23.040.07 Pipelines and its parts for district heat,23.040.60 Flanges, couplings and joints
Technical Committee : 302 - Space heating appliances, ventilation and room air conditioner
- Replaces SR EN 489:2002
- Normative reference SR EN 25817:1993
- Normative reference SR EN 253:2004
- Normative reference SR EN 583-1:2001
- Normative reference SR EN 1435:2001
- Normative reference SR EN 1712:2002
- Normative reference SR EN 444:1996
- Normative reference SR EN 1714:2000
- Replaced by SR EN 489:2009