Rockwell Automation T8094 8000 Series TMR System Safety Manual - Manual (Page 33)

SAFETY MANUAL
D oc N umber T8094
I ssue 27 – June 2013
Page 12 of 103
2.2.1.8 Installation and Commissioning
The system installation stage shall define the steps to be undertaken to ensure that the
system is installed correctly and commissioned on the plant. These steps shall include
the physical and electrical installation of the system.
The installation environment is a potential source of common cause failure. Therefore,
it is vital that compatibility of the equipment is established. The `environment` for
these purposes includes the climatic, hazardous area, power, earthing and EMC
conditions. In many cases, there may not be a single installation environment.
Elements of the system may be installed in differing location, i.e. central control room,
equipment rooms and field installations. In these cases, it is important to establish the
equipment and environment compatibility for each site.
The first step in the installation sequence is typically the physical installation of the
system. Where the system comprises a number of physically separate units, it is
important that the sequence of installation be established. This may include the
installation of termination facilities before the remaining elements of the system. In
these cases, it is important to establish that independent installation and testing
facilities are available.
Each installation shall be designed to ensure that the control equipment is not
operated in environments that are beyond its design tolerances. Therefore,
consideration should be given to the proper control of temperature, humidity, vibration
and shock, as well as adequate shielding and earthing to ensure that exposure to
electromagnetic interference and electrostatic discharge sources are minimised.
The commissioning stage is to establish the system hook-up and verify its correct ‘end-
to-end’ functionality, including the connection between the TMR system and the
required sensors and final elements. It is likely that groups of functions are
commissioned rather than the system as a whole, i.e. accommodation area functions
before production functions. In these cases, it is important to establish the
commissioning sequence and the measures to be taken to ensure safe operation
during periods of partial commissioning. These measures shall be system specific and
shall be defined clearly before commissioning. It is important to establish that any
temporary measures implemented for test purposes or to allow partial commissioning
are removed before the system, as a whole, becomes live.
Records shall be maintained throughout the commissioning process. These records
shall include records of the tests completed, problem reports and resolution of these
problems.