maximum operating pressure in the system with a factor of safety of 5 based
on the ultimate strength of the material or 2 based on the yield strength
of the material. A factor of safety of 3 shall be applied to the
compression load when designing the hydraulic cylinders to resist buckling.
1.6.3.3
Stress Concentration Factors
Stress concentration factors shall be used where applicable. Reduction of
allowable stresses to compensate for repeated cycles of loading is not
required.
1.6.4
Connections
1.6.4.1
Pinned Connections
Pinned hydraulic cylinder connections for field assembly shall be designed
as shown.
1.6.4.2
Shop Connections
Shop connections shall be designed for assembly by means of welding or by
bolting.
1.6.4.3
Welded Connections
Design of welded connections shall be in accordance with the applicable
provisions of AWS D1.1/D1.1M except that provisions for repeated stress
will not be required. Hydraulic cylinders shall be welded in accordance
with ASME BPVC SEC VIII D1, Section VIII. Piping shall be welded in
accordance with ASME B31.1.
1.6.4.4
Structural Bolted Connections
Structural bolted connections carrying primary loads shall be made with
ASTM A 325M ASTM A 325 bolts.
1.7
DELIVERY, STORAGE, AND HANDLING
1.7.1
Packaging
The hydraulic power systems shall not be prepared for shipment until they
have been inspected and accepted for shipment at origin by the Contracting
Officer or his authorized representative, unless inspection has been waived
in writing. Each hydraulic power system or subassembly shall be shipped
completely assembled. The subassemblies shall be defined as the following:
a.
Hydraulic cylinders
b.
Hydraulic power units
c.
Piping assemblies
d.
The subassemblies shall be provided with adequate protective pads,
supports, and blocking and shall be securely restrained to prevent
distortion or damage to the painted surfaces in transit. Any loss or
damage during shipment, including damage to the painted surfaces, will be
considered the responsibility of the Contractor, and shall be replaced or
SECTION 15010A
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