1 Scope
This part of IEC 60794 is a family specification that covers sewer cables and conduits for installation
by blowing and/ or pulling in non-man accessible storm and sanitary sewers, also applicable
for man-accessible and lateral ones. Systems built with components covered by this
standard are subject to the requirements of sectional specification IEC 60794‑3.
Sewer cable and conduit constructions have to meet the different requirements of the
sewer operating companies and/or associations regarding chemical, environmental, operational,
cleaning and in general maintenance conditions.
Preferential applications, describing sewer cable characteristics versus methods of
installation is reported in Annex A and Annex B for non-man accessible sewers.
Clause 4 describes a blank detail specification for sewer cables and conduits for installation
by blowing and/or pulling in storm and sanitary sewers. It incorporates some minimum
requirements.
Detail specifications may be prepared on the basis of this family specification.
The parameters specified in this standard may be affected by measurement uncertainty
arising either from measurement errors or calibration errors due to lack of suitable
standards. Acceptance criteria should be interpreted with respect to this consideration.
The number of fibres tested is representative of the sewer cable and should be agreed
between the customer and the supplier.