ETL 1110-2-533
30 Sep 94
seismic zones 2A, 2B, 3, and 4 (see Table A-1,
c. General objectives. Objectives are to iden-
Appendix A) in conjunction with periodic inspections.
tify the most critical lifelines in terms of vulnerability
These walk-through inspections should concentrate on
and impact on project performance, and to provide
vulnerable areas cited in Appendix B. The following
seismic protection for the most critical lifelines in the
items, because of their importance to onsite emer-
most cost effective manner.
gency response, should be properly secured or
anchored:
5. Action
(1) Batteries required for emergency power,
monitoring, and control.
a. Immediate action. New contracts involving
work for hydroelectric power plant facilities should
(2) Emergency engine generators.
include appropriate provisions for the seismic protec-
tion of mechanical and electrical equipment. Military
(3) Essential communications equipment.
guide specification CEGS-13080 can be used for that
purpose.
b. Long-term actions. Walk-through inspec-
tions should be conducted on all Corps projects in
FOR THE DIRECTOR OF CIVIL WORKS:
2 Appendices
PAUL D. BARBER, P.E.
APP A - Lifeline Report No. 1
Chief, Engineering Division
APP B - Guidelines for Evaluating the Seismic
Directorate of Civil Works
Vulnerability of Lifelines and Ancillary Systems
Required for the Operations of Dams and Mitiga-
tion Measures for Reducing Seismic Vulnerability
2
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