ETL 1110-3-485
15 Oct 97
6.2 Technical Center of Expertise (TCX). A TCX for Aircraft Hangar Fire Protection was
established to provide technical assistance to those involved in the design, installation and testing
of aircraft hangar foam fire suppression systems. On a cost-reimbursable basis, the TCX will
provide technical guidance and assistance to designers of hangar fire protection systems. TCX
point-of-contact is Ed Lockwood at (540) 665-3919 (voice) and (540) 665-3628 (facsimile).
Correspondence should be directed to the TCX as follows:
U.S. Postal Service:
Federal Express or UPS
U.S. Army Corps of Engineers
U.S. Army Corps of Engineers
Transatlantic Programs Center
Transatlantic Programs Center
ATTN: CETAC-EC-TM (Lockwood),
ATTN: CETAC-EC-TM (Lockwood)
P.O. Box 2250
201 Prince Frederick Drive
Winchester, Virginia 22604-1450
Winchester, Virginia 22602
6.3 Design Procedures. The fire protection system design will be accomplished in accordance
with applicable provisions of ETL 1110-3-484, Aircraft Hangar Fire Protection Systems. The
ETL outlines detailed procedures for designing and specifying fire protection systems for hangars.
Lessons learned over several years indicate that foam water fire protection systems, such as those
included in this ETL, often fail to meet user requirements and comply with applicable design
criteria. Also, costly contract modifications have occurred because requirements were not clearly
defined. It is therefore essential that project drawings and specifications clearly delineate, in
detail, all system requirements. It is not acceptable to defer design considerations for resolution
by the contractor during the construction phase of a project.
6.3.1 Design Analysis. A separate "Fire Protection" section will be included in the project
design analysis in accordance with MIL-HDBK-1008C. This section will provide a complete
record of the basis of design and will include applicable criteria, designer assumptions,
calculations, applicable memoranda and catalog data.
6.3.2 Drawings. Project drawings will include separate fire protection drawings designated as
"FP" to delineate all aspects of the system. This will include plans showing water storage and
pumping facilities, sprinklers, pipe sizes, control panels, alarm initiating and notification devices,
and other components of the system. Drawings will include details of water service entry and
method of restraint, fire pump and piping configuration, all sprinkler risers and associated
equipment.
6.3.3 Specifications. Corps of Engineers Guide Specifications (CEGS) will be used for the fire
protection systems addressed in this ETL. These include, but are not limited to, the following:
a. CEGS-15320, Fire Pumps
B-8
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