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PIP VESFG001 Document Information:
Title
Fiberglass Tank and Vessel Selection, Design, and Fabrication Specification ASME RTP-1 and Section X
Process Industry Practices
Publication Date:
Mar 1, 2007
Scope:
This Practice describes the general requirements for the design,
materials, fabrication, examination, inspection, testing,
certification (ASME stamp and Supplier's Data Report), and pressure
relief of aboveground fiberglass reinforced polyester, vinyl ester,
and epoxy tanks and vessels having internal or external pressure
from full vacuum up to the limits of the Code Section X.
This practice covers shop and field-fabricated equipment,
thermoplastic-lined equipment, and dual laminate equipment.
This Practice does not cover the following equipment items that
are excluded from both ASME/ANSI RTP-1 and Code
Section X:
a. Portable or movable containers
b. Hoods, ducts, and stacks
c. Fans and blowers
d. Vessel internals such as entrainment separators, chevron
blades, packing support plates, and liquid distributor plates
e. Pipe or piping
f. Fully buried underground closed vessels
This Practice does not cover the following equipment items that
are excluded from Code Section X:
a. Vessels having an inside diameter (ID), width, height, or
cross-section diagonal of 6 inches (150 mm) or less, with no
limitation on length or pressure. The 6 inch (150 mm) dimensions
exclude the thickness of any corrosion liner.
b. Vessels containing lethal substances as designated by the
owner in accordance with Code Section X Paragraph
RG-113.
This Practice does not cover the following equipment items that
are excluded from ASME/ANSI RTP-1:
a. Vessels constructed of furan, epoxy, or phenolic resins
b. Vessels with non-glass structural reinforcements
c. Vessels having metallic liners
Total compliance (including stamping) with ASME/ANSI
RTP-1 or Code Section X shall be a basic requirement
of all vessels and tanks ordered to this Practice. Refer to the
User's Basic Requirements Specification (UBRS) or purchase order to
determine which code or standard is required. References in this
Practice to ASME/ANSI RTP-1 and Code Section X
apply based on the specified standard and are not interchangeable
except as specifically indicated.
Deviations from this Practice require written approval of the
Purchaser.
Many recognized and generally accepted good engineering
construction practices are included herein. However, in light of
the many diverse service applications of fiberglass tanks and
vessels, these practices shall be employed with engineering
judgment and supplemented, as appropriate, with requirements
related to specific materials of construction, service fluids,
operating environments, and tank geometries. Accordingly,
provisions of this Practice may be overridden or supplemented by an
Overlay Specification.
Purpose
This Practice provides requirements for the construction of
fiberglass vessels and tanks in accordance with ASME Boiler and
Pressure Vessel Code Section X "Fiber-Reinforced Plastic
Pressure Vessels" or ASME/ANSI RTP-1 "Reinforced Thermoset
Plastic (RTP) Corrosion Resistant Equipment." Fabrication shall be
by ASME-accredited manufacturers. When the type of fiberglass
fabrication is not within the scope of Code Section X or
ASME/ANSI RTP-1, the Purchaser may use this Practice for
guidance. In addition, Sections 5 and 11 provide guidance for the
User or Designer in developing procurement specifications and
installation practices for this equipment. Sections 5 and 11 are
not the responsibility of the Fabricator.
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