Specifications

PIP ELCGL01
Electrical Design Criteria November 2002
Page 20 of 20 Process Industry Practices
16.3 When specified on the Data Sheet, standby power shall be provided by an alternate
utility/plant feeder or a turbine-driven or diesel generator. Transfer switches shall be
provided for critical loads not requiring uninterruptible power.
17. Electrical Requirements for Skid-Mounted or Packaged Systems
Unless specified otherwise on the Data Sheet, electrical requirements for skid-mounted or
packaged systems shall be as specified by PIP ELSPS01.
18. Lightning Protection
18.1 Tall or isolated structures and the high-voltage switchyard shall be protected against
lightning in accordance with NFPA 780.
18.2 Down conductors from air terminals or lightning mast shall be connected to
individual ground rod as well as to the plant grounding system.