MIL-DTL-24784/12B(SH)
g. Reference to the standard log sheet, if applicable (see MIL-DTL-24784).
3.6.3.5 Standard log forms (model set). Unless otherwise specified in the TMCR (see 6.2), a
model, or model set, standardized log form (see MIL-DTL-24784) developed from design
engineering data shall be included at the end of Chapter 2 for equipment requiring the periodic
recording of data for monitoring its performance and accomplishing trend analysis.
3.6.3.5.1 Applicability. Operating machinery and equipment which are integrated into
functioning ships and facility systems similar, but not limited to, the following types of equipment,
shall include the model log form:
a.
High pressure air compressors .
b.
Diesel engines.
c.
Air conditioning plants.
d.
Carbon dioxide scrubbers.
e.
Carbon monoxide - hydrogen burners.
f.
Steam or vapor distilling plants.
g.
Turbine generators.
h.
Electronic equipment cooling water and dry air systems.
i.
Boilers.
j.
Propulsion plants.
3.6.3.5.1.1 Waiver of requirement. When it is deemed that the development of such a form
would be of no value to the Government for the equipment being covered, a waiver (with
justification and rationale) for standard log form requirements shall be requested at least 3 months
prior to submittal of the review draft copy.
3.6.3.5.2 Criteria. The "model" standardized log form shall serve as an operating log which will
be a guide to all ships of all classes. It is not intended that this model will in any way inhibit an
individual ship from accommodating its specific needs through the addition or deletion of readings
as deemed necessary on a case basis. The basic criteria to be utilized in developing the model
shall be:
a. Analyzing the various parameters associated with monitoring the performance of the
equipment to ascertain those that provide trend determinant information.
b. Synthesizing the results of the above analysis to ensure that only "key" (that is, necessary)
parameters are included; the goal being to keep to an absolute minimum the total number of
log readings required in running the plant.
c. Arranging the order of monitoring on the appropriate log forms in such a manner that the log
keeper and the reviewing officer can quickly tell when problems, either short-term or long-
term in nature, are beginning to develop (that is, by function as opposed to order of physical
arrangement).
d. Duplicate readings shall be eliminated where feasible (that is, where the parameter is generally
associated with a single function and where duplicated readings are not normally compared
with one another).
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