Rockwell Automation AADvance Controller Safety Manual - Manual (Page 62)

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4-6 Document: 553630
ICSTT-RM446K-EN-P Issue: 10 _C
Safety Manual (AADvance Controller)
Industrial Functional Safety Standards
AADvance is designed to meet the following industrial safety system
requirements:
NFPA 85 Requirements
NFPA 85:2007 provides minimum requirements for the design, installation,
operation and maintenance of large commercial industrial boilers, heat
recovery, heat recovery steam generators and related combustion systems.
The AADvance system is certified for use with NFPA 85 compliant systems.
The systems should be integrated in accordance with NFPA 85. In particular
the following shall be applied:
 The operator shall be provided with a dedicated manual switch that shall
independently and directly actuate the safety shutdown trip relay. At least
one identified manual switch shall be located remotely from the boiler
where it can be reached in case of emergency.
 The burner management system shall be provided with independent logic,
independent input/output systems, and independent power supplies and
shall be a functionally and physically separate device from other logic
systems, such as the control system for the boiler or heat recovery steam
generator.
 Logic sequences or devices intended to cause a safety shutdown, once
initiated, shall cause a burner or master fuel trip, as applicable, and shall
require operator action prior to resuming operation of the affected plant.
No logic sequence or device shall be permitted that allows momentary
closing and subsequent inadvertent reopening of the main or ignition fuel
valves.
 Documentation shall be provided to the owner and operator, indicating
that all safety devices and logic meet the requirements of the application.
 System response time shall be sufficiently short to prevent negative effects
on the application.
 The NFPA 85 certification is only applicable where the system is applied in
accordance with this safety manual and NFPA 85 requirements.