| |
|
|
| |
|
Final
Installation Specification received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained
|
|
BS 6701:2004 and BS
EN 50174-1:2009 require the production of an Installation Specification
in all cases.
The Installation Specification, particularly the Scope of Work,
will tend to be amended during the course of the installation. The
final Installation Specification is an important contractual document
in that it defines the acceptance criteria for the completed infrastructure.
Failure to maintain the Installation Specification by means of change
control represents a risk in terms of dispute, delays in payment
and associated costs. |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clause 4.1.2, states that it is the responsibility
of the installer to ensure that “a Quality Plan shall be provided
in accordance with BS EN 50174-1 for telecommunications equipment
and telecommunications cabling.”
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation"
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative."
|
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010 will reverse the order of its current clauses 4
and 5 to match the contents of the clauses of BS EN 50174-1:2009
and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| |
|
Installation
Specification audit trail received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
Where the final Installation
Specification differs from the document against which the installation
contract was placed, a change control system is required to track
the instructions provided by the owner of the premises. The failure
to maintain the paperwork which constitutes the record of all changes
made, together with appropriate approvals, represents a risk in terms
of dispute, delays in payment and associated costs. |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clause 4.1.2, states that it is the responsibility
of the installer to ensure that “a Quality Plan shall be provided
in accordance with BS EN 50174-1 for telecommunications equipment
and telecommunications cabling.”
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative."
|
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010 will reverse the order of its current clauses 4
and 5 to match the contents of the clauses of BS EN 50174-1:2009
and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| |
|
Final
Quality Plan received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
BS
6701:2004, clause 4.1.2, states that it is the responsibility of the
installer to “provide a Quality Plan in accordance with BS EN
50174-1 for telecommunications equipment and telecommunications cabling.”
A Quality Plan is essentially a register
of the Method Statements to be applied to the specific installation,
tailored to reflect the applicable contractual responsibilities
and interfaces, together with information detailing the competence
of the personnel to undertake the tasks outlined in the Method Statements.
The Installation Specification, particularly the Scope of Work,
will tend to be amended during the course of the installation. It
is therefore possible that the Quality Plan will also be amended
to reflect the changes ot the Installation Specification.
Failure to maintain the Quality Plan by means of change control
represents a risk in terms of dispute, delays in payment and associated
costs. |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
4.1.2, states that it is the responsibility of the installer to
ensure that “a Quality Plan shall be provided in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling.”
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 5.1.2.1, requires that “a quality
plan shall be prepared that specifies the procedures to demonstrate
compliance with:
 the
requirements and recommendations of this standard;
 the
requirements of the referenced cabling design document (e.g. EN
50173-2);
 the
installation specification."
BS EN 50174-1:2009, clause 5.1.5, requires that“all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| |
|
Quality Plan audit trail received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
BS
6701:2004, clause 4.1.2, states that it is the responsibility of
the installer to ensure that “a Quality Plan shall be provided
in accordance with BS EN 50174-1 for telecommunications equipment
and telecommunications cabling.”
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 5.1.2.1, requires that “a quality
plan shall be prepared that specifies the procedures to demonstrate
compliance with:
the
requirements and recommendations of this standard;
the
requirements of the referenced cabling design document (e.g. EN
50173-2);
the
installation specification."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
|
| |
|
|
|
|
| |
|
Health and Safety Plan received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
|
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
|
| |
|
|
|
|
| |
|
Safe working requirements
received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
If the
installation process requires involvement by the owner of the premises
(or directly affects the owner of the premises), it is important
to ensure that the potential impact is identified, advised and addressed
as soon as possible.
One of the most often ignored risks is that of optical fibre safety.
The owner of the premises has the obligation to manage the safety
of the site, particularly with regard to optical power. This obligation
is being strengthened via European Directive and associated national
legislation. |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clauses
4.1.1 and 5.1.1, state that "all telecommunications cabling
shall meet all the requirements of the BS EN 50174 series of standards."
BS EN 50174-1:2009, clause 4.2.5.1,
requires that "the location of cabinets, frames and racks shall:
allow
subsequent measurements, repair, expansion or extension of the installed
cabling to be
undertaken without risk of injury to personnel;
be
consistent with the space, floor loading and other services required
for information technology
equipment;
allow
the installation of the necessary cabling together with the delivery
and removal of larger
items
of apparatus;
 provide
a minimum clearance of 1,2 m on all faces where access is required."
BS EN 50174-1:2009, clause 4.2.6.1, requires that "the location
of closures shall allow subsequent measurements, repair, expansion
or extension of the installed cabling to be undertaken without risk
of injury to personnel."
BS EN 50174-1:2009, clause 4.2.7.1, requires
that "the location and design of the termination points shall:
allow
safe access during:
 installation
of the closure and termination of the cable;
the
delivery and installation of information technology equipment;
operation
of the cabling (disconnection and reconnection of cords);
maintenance
and repair;
ensure
that link performance requirements are met;
prevent
ingress of dust, fluids (including flooding) or other contaminants;
take
into account the level of security required for the attached information
technology equipment
(e.g.
termination points to which networking equipment such as wireless
access points is attached
may need
to be protected or located to prevent unauthorised access);
 be
in accordance with local regulations.”
BS EN 50174-2:2009, clause 4.6, requires
that "closures shall be located such that it is possible
to undertake subsequent measurements, repair, expansion or extension
of the installed cabling with minimal disruption and in safety."
BS EN 50174-3:2003, clause 5.3.1, requires that "cabinets
and maintenance holes shall be located such that it is possible
for subsequent measurements, repair, expansion or extension of the
installed cabling to be undertaken with minimal disruption and in
safety."
BS 6701:2004, clause 5.1, states that it is the responsibility
of the owner of the premises to ensure that "classification
of areas containing optical fibre telecommunications equipment and
optical fibre telecommunications cabling shall be undertaken in
accordance with BS EN 60825-2."
BS 6701:2004, clause 5.3.2, states that it is the responsibility
of the owner of the premises to ensure that "when subject to
pole bending by maintenance personnel and/or processes, telecommunications
cables crossing maintainable highways, other than motorways or designated
high load routes, shall be maintained at a height of not less than
4.9 m." This requirement relates directly to text in BS EN
50174-3:2003, clause 5.4.3.
|
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010 will reverse the order of its current clauses 4
and 5 to match the contents of the clauses of BS EN 50174-1:2009
and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| G |
|
Duct test results received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
|
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010 will reverse the order of its current clauses
4 and 5 to match the contents of the clauses of BS EN 50174-1:2009
and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| H |
|
Installed system power requirements received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
Failure of the owner of
the premises to provide an adequate power supply may render the equipment
inoperable and risk contractual litigation. |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
4.1.2, states that it is the responsibility of the installer to
provide “all relevant documentation ... to enable the owner
of the premises to implement operating procedures for the telecommunications
system(s).”
BS 6701:2004, clause 4.3, states that it is the responsibility
of the installer to provide “documentation ... to the owner
of the premises detailing the power consumption requirements of
the telecommunications equipment to be supplied and installed.”
BS 6701:2004, clause 5.1.2, states that it is the responsibility
of the owner of the premises to provide “an electricity supply
that meets the power consumption requirements of the telecommunications
equipment.” |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010 will reverse the order of its current clauses
4 and 5 to match the contents of the clauses of BS EN 50174-1:2009
and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| I |
|
As-built drawings received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation."
BS EN 50174-1:2009, clause 5.1.1, requires
that “the installation specification prepared by the premises
owner or an appointed representative ... shall be agreed before
the installation commences.”
BS EN 50174-1:2009, clause 4.1.1.1, requires
that “the installation specification shall comprise... the
technical specification and a scope of work."
BS EN 50174-1:2009, clause 4.1.2.4.1, requires
that "the technical specification shall define the:
level
of administration system to be applied to the cabling infrastructure
(see 4.5.2);
range
of documentation to be supplied by the installer including any requirements
to link records
to each
other and to other building services records;
format
of the documentation (e.g. to match the administration system);
BS EN 50174-1:2009, clause 4.1.3.3.1, requires
that "the scope of work shall define a maintenance and
control procedure for the final cabling documentation."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| J |
|
Final cabling documentation received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS 6701:2004, clauses 4.4.1.1 states that it is the responsibility
of the installer to ensure that "details of the locations of
pathways into which telecommunications cabling is installed and
their contents shall be recorded."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation."
BS EN 50174-1:2009, clause 5.1.1, requires
that “the installation specification prepared by the premises
owner or an appointed representative ... shall be agreed before
the installation commences.”
BS EN 50174-1:2009, clause 4.1.1.1, requires
that “the installation specification shall comprise... the
technical specification and a scope of work."
BS EN 50174-1:2009, clause 4.1.2.4.1, requires
that "the technical specification shall define the:
level
of administration system to be applied to the cabling infrastructure
(see 4.5.2);
range
of documentation to be supplied by the installer including any requirements
to link records
to each
other and to other building services records;
format
of the documentation (e.g. to match the administration system);
BS EN 50174-1:2009, clause 4.1.3.3.1, requires
that "the scope of work shall define a maintenance and
control procedure for the final cabling documentation."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| K |
|
Installation operating instructions received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clauses
4.1.2 states that it is responsibility of the installer to ensure
that the "installation, operating and maintenance instructions
for all telecommunications equipment and telecommunications cabling
shall be obtained."
BS 6701:2004, clauses 4.1.2 states that it is responsibility of
the installer to ensure that the "all relevant documentation
shall be provided to enable the owner of the premises to implement
operating procedures for the telecommunications system(s)."
BS 6701:2004, clauses 5.2 states that it is responsibility of the
owner of the premises to ensure that the "telecommunications
equipment and telecommunications cabling shall be operated in accordance
with the instructions provided by the installer."
BS 6701:2004, clauses 5.2 states that it is responsibility of the
owner of the premises to ensure that the "the selection and
operation of optical fibre telecommunications equipment, test equipment
and optical fibre telecommunications cabling shall be in accordance
with BS EN 60825-2."
BS 6701:2004, clauses 5.2 states that it is responsibility of the
owner of the premises to ensure that the "operation of telecommunications
equipment and telecommunications cabling in situations where explosive
or flammable materials are generated, prepared, processed, handled,
stored or otherwise encountered shall be carried out in accordance
with BS EN 60079-14."
BS EN 50174-1:2009, clause 4.5, places requirements
for the operation of the installed cabling on the specifier. |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| L |
|
Sign-off paperwork received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation."
BS EN 50174-1:2009, clause 5.1.1, requires
that “the installation specification prepared by the premises
owner or an appointed representative ... shall be agreed before
the installation commences.”
BS EN 50174-1:2009, clause 4.1.1.1, requires
that “the installation specification shall comprise... the
technical specification."
BS EN 50174-1:2009, clause 4.1.2.4.1, requires
that "the technical specification shall define the requirements
for acceptance of the installation."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| M |
|
Cabling test and inspection results received? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
|
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation."
BS EN 50174-1:2009, clause 5.1.1, requires
that “the installation specification prepared by the premises
owner or an appointed representative ... shall be agreed before
the installation commences.”
BS EN 50174-1:2009, clause 4.1.1.1, requires
that “the installation specification shall comprise... the
technical specification and a scope of work."
BS EN 50174-1:2009, clause 4.1.2.4.1, requires
that "the technical specification shall define the:
format
of inspection and test documentation;
format
of acceptance test result documentation (e.g. to match the administration
system) together
with other
information relating to the test e.g. type of tester used, date
of test, operator,
termination
point identifier, remedial action taken in the event of failed test,
re-test results."
BS EN 50174-1:2009, clause 4.1.3.3.1, requires
that "the scope of work shall define a maintenance and
control procedure for the final cabling documentation."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
| |
|
|
|
|
| |
|
What the future
standards are expected to say: |
|
NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
| |
|
|
|
|
| N |
|
Cabling test and inspection results in correct
format? |
|
|
| |
|
|
|
|
|
|
|
The
risk element explained |
|
Failure to record results
correctly and in the correct format represents a self-evident risk
in terms of re-testing, delays and associated cost. |
|
|
|
|
|
|
| |
|
What the published
standards say: |
|
BS 6701:2004, clause
5.1.2, states that it is the responsibility of the owner of the
premises to “provide an Installation Specification in accordance
with BS EN 50174-1 for telecommunications equipment and telecommunications
cabling."
BS 6701:2004, clauses 4.1.1 and 5.1.1, state that "all telecommunications
cabling shall meet all the requirements of the BS EN 50174 series
of standards."
BS EN 50174-1:2009, clause 4.1.1.1, requires that "an installation
specification shall be prepared ... and be agreed with the installer
prior to the commencement of the installation."
BS EN 50174-1:2009, clause 5.1.1, requires
that “the installation specification prepared by the premises
owner or an appointed representative ... shall be agreed before
the installation commences.”
BS EN 50174-1:2009, clause 4.1.1.1, requires
that “the installation specification shall comprise... the
technical specification and a scope of work."
BS EN 50174-1:2009, clause 4.1.2.4.1, requires
that "the technical specification shall define the:
format
of inspection and test documentation;
format
of acceptance test result documentation (e.g. to match the administration
system) together
with other
information relating to the test e.g. type of tester used, date
of test, operator,
termination
point identifier, remedial action taken in the event of failed test,
re-test results."
BS EN 50174-1:2009, clause 4.1.3.3.1, requires
that "the scope of work shall define a maintenance and
control procedure for the final cabling documentation."
BS EN 50174-1:2009, clause 5.1.5, requires that “all modifications,
changes and deviations shall be documented in a manner agreed with
the premises owner or an appointed representative." |
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What the future
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NOTES:
BS 6701:2010
will reverse the order of its current clauses 4 and 5 to match the
contents of the clauses of BS EN 50174-1:2009 and BS EN 50174-2:2009.
BS EN 50174-3:2010 will be restructured to match the format of BS
EN 50174-1:2009 and BS EN 50174-2:2009. |
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Non-compliance paperwork received? |
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The
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What the published
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What the future
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