126.96.36.199 Guards. Horizontal flexibly coupled units with bedplates shall
have coupling guards provided. Guards shall permit ready access to the coupling
for lubrication and examination.
3.3.11 Material. The materials of the pump shall conform to the materials
specified in table II. However, this specification is not intended to be
restrictive provided proposed alternative materials will give equal or better
service than the material specified. Proposed alternative materials shall be
subject to approval by the design review agency. Components of the pump for
which the specific materials are not specified shall be materials best suited
for the intended service. Materials which can be sensitized and are subjected
to heat treatment in the sensitization range during fabrication shall be able to
pass the intergranular corrosion tests of the base material specifications.
Particular attention shall be given to avoiding sensitization of materials
during hard facing, stress-relieving, or repair welding. Use of cadmium-plated
parts and fasteners, including washers, is prohibited.