12 May 2003
Including change 1, 19 January 2007
Use of Steam Separators. Provide steam separators as required to meet
the NAVSEA criteria for the purity of shore-to-ship steam in Navy ports. Properly
selected steam separators may be installed in steam mains at piers, wharves, and
drydocks. (See S9086-AB-ROM-010 NSTM Chapter 220.) These will provide
additional protection against condensate carryover and the resultant steam
contamination where such problems are known to exist. Normally, steam separators
are not required on piers, wharves, or drydocks if adequate condensate removal is
provided at the boiler plant and in shore mains. Steam separators should be used only
when necessary and as based upon a case-by-case evaluation of local conditions. If a
steam separator should be necessary, then Figure 3-2 provides a typical installation
detail that should be used in conjunction with the guidelines of NFESC Test Report No.
TN-1586, Steam Separator Test and Evaluation.
to the harsh marine environment, conductivity and
meters should not be installed permanently on piers or wharves. Condensate sampling
stations should be provided at piers and at steam plants. Figure 3-2 also shows a
typical installation of a sampling station.
Metering. Where monitoring of usage is required, provide metering of
steam flows to piers, groups of piers, or drydocks. Install meters in accessible vaults or
in above grade enclosures ashore or on piers. At individual piers or drydocks, use
pressure and/or temperature compensated electronic microprocessor type flow meters
for good mass flow accuracy and range. Consult with the cognizant NAVFAC EFD/EFA
OR USACE DISTRICT to determine if a steam meter installation and maintenance
program exists at the Activity. Consult the Activity steam meter program coordinator to
integrate the flow meter type selection into any existing meter program. Where
metering is not initially required, make provision for ease of future installation by means
of concrete vaults or pier access covers.
COMPRESSED AIR SYSTEMS. In general, a compressed air system is
required at all active and repair berths. However, final needs and requirements vary on
a pier-by-pier basis. Consult with the Activity for actual requirements, existing
construction standards, and preferences. Requirements for graving drydocks are given
in UFC 4-213-10.
Demands. Compressed air requirements for selected ship classes are
defined in Appendix C. For ships not included in Appendix C use data from a similar
ship, or obtain the expected demand from NAVFAC CIENG or USACE.