TABLE I. MAXIMUM SPAN FOR PIPE
__________________________________________________________________________
STD. WT.
EX. STRONG
DIAMETER
STEEL PIPE
STEEL PIPE
INCHES
SCHEDULE 40
SCHEDULE 80
__________________________________________________________________________
5
12'-9"
13'-0"
__________________________________________________________________________
6
13'-9"
14'-0"
__________________________________________________________________________
8
15'-6"
16'-0"
__________________________________________________________________________
10
17'-0"
17'-6"
__________________________________________________________________________
12
18'-3"
19'-0"
__________________________________________________________________________
3.1.9
Pressure Gages
Provide pressure guages with a shut-off valve or petcock installed between
the gage and the line.
3.1.10
Strainers
Provide strainers with meshes suitable for the services where indicated, or
where dirt might interfere with the proper operation of valve parts,
orifices, or moving parts of equipment.
3.1.11
Equipment Foundations
Provide equipment foundations of sufficient size and weight and of proper
design to preclude shifting of equipment under operating conditions or
under any abnormal conditions which could be imposed upon the equipment.
Provide foundations which meet the requirements of the equipment
manufacturer, and when required by the Contracting Officer, obtain from the
equipment manufacturer approval of the foundation design and construction
for the equipment involved. Equipment vibration shall be maintained within
acceptable limits, and shall be suitably dampened and isolated.
3.1.12
Equipment Installation
Install equipment strictly in accordance with these specifications, and the
manufacturers' installation instructions. Grout equipment mounted on
concrete foundations before piping is installed. Install piping in a
manner that does not place a strain on any of the equipment. Do not bolt
flanged joints tight unless they match properly. Extend expansion bends
adequately before installation. Grade, anchor, guide and support piping
without low pockets.
3.1.13
Cleaning of System
**************************************************************************
NOTE: Special cleaning requirements are mainly
intended for high pressure systems. Special
cleaning should also be considered for medium
pressure systems over 1724 kPa (gage) 250 psig which
may be subject to dieseling explosions when oil
contamination is present. Objective cleaning
SECTION 15212N
Page 40
Previous Page
