bracketed statement regarding welds and the welding
submittal, and use the second bracketed sentence.
Non return valves are only required on multiple
boiler installations.
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Steam piping between the boiler [steam nozzle] [nonreturn valve] and the
second stop valve shall be welded and stamped in accordance with ASME BPVC
SEC I. [Other piping shall be welded in accordance with qualified
procedures using performance qualified welders and welding operators.
Procedures and welders shall be qualified in accordance with ASME BPVC SEC
IX. Welding procedures qualified by others, and welders and welding
operators qualified by another employer may be accepted as permitted by
ASME B31.1. The Contracting Officer shall be notified 24 hours in advance
of tests. The welder or welding operator shall apply the personally
assigned symbol near each weld made as a permanent record. Structural
members shall be welded in accordance with Section 05090A WELDING,
STRUCTURAL] [Welding and nondestructive testing procedures are specified in
Section 05093 WELDING PRESSURE PIPING].
1.3.6
Use of Asbestos Products
Products that contain asbestos are prohibited. This prohibition includes
items such as packings or gaskets, even though the item is encapsulated or
the asbestos fibers are impregnated with binder material.
1.3.7
Terminology
technology shall be those given in ISA S51.1. Logic symbols shall be in
accordance with ISA S5.2. Graphic symbols for distributed control shall be
in accordance with ISA S5.3.
1.3.8
Ambient Temperature Requirement
Instruments located in furnace rooms shall be designed for 79 degrees C 175
degrees F ambient temperature operation. Other instruments shall be
designed for 40 degrees C 104 degrees F ambient temperature operation.
1.3.9
The Contractor shall submit design analyses and calculations for walls,
roofs, foundations, and other features, for specialty type of construction,
with design data for lateral forces that may be encountered due to wind
accordance with paragraph Supports in PART 3.
1.3.10
Electrical Environment
Electrical and electronic equipment provided shall operate satisfactorily,
both independently and in conjunction with other equipment. The operation
of electrical and electronic equipment shall not be adversely affected by
interference voltages and fields from external sources, and that equipment
provided shall not be a source of interference that might adversely affect
the operation of other equipment. The basic design of equipment,
components, and assemblies shall limit the effects of radio frequency
SECTION 15561A
Page 18