PVHO Windows
Hydrospace brings 15 years experience in the design, fabrication and certification of acrylic windows for use in Pressure Vessels for Human Occupancy (PVHO). Offering a full range of engineering services with expert knowledge of PVHO certification, Hydrospace serves all ASME-PVHO applications.
Hydrospace fabricates superior quality acrylic viewports for hyperbaric chambers, diving systems, and submersible vehicles, applying the optimum in quality assurance and precision in fabrication to meet and exceed requirements of ASME PVHO-1.
From design and fabrication to repair and hydrostatic pressure testing Hydrospace services all types and sizes of Standard PVHO and Non-Standard windows. This includes a full array of certification and classification inspections for classed viewports to meet requirements for ABS, GL, Lloyds Register, DNV, US Coast Guard, or CISR.
PVHO DOCUMENTS for CERTIFICATION
PVHO-1
VP1
Fab Cert
Fabrication Certificate
Each Window is uniquely identified and must have its own Fabrication Certificate, provided by the window manufacturer
PVHO-1
VP2
Design Cert
Design Certificate
A Design Certificate defines window geometry and max rating , provided with drawing by window designer
PVHO-1
VP3
Matl Cert
Material Certificate
A material Certificate of quality in compliance with requirements of ASME PVHO, provided by the window manufacturer
PVHO-1
VP4
Matl Cert
Material Test Certificate
A Test Report of actual acrylic lot used in fabrication to confirm it meets PVHO specs, provided by the window manufacturer
PVHO-1
VP5
Hydro Test
Pressure Test Certificate
Each window must be hydrostatically pressure tested before it is put in service. Performed by User or by the window manufacturerImportant PVHO Documents
PVHO Documentation Maintenance
The PVHO window certificates are very important documents to preserve and store in a safe location. ASME PVHO requires that users maintain these forms on record for the life of the window, which can be anywhere from 10 to 20 years or more. Hydrospace keeps a vault of all PVHO forms issued, providing a backup source but it is the responsibility of the owner/user of the vessel in which the windows are used to keep the records.* For more details See PVHO WIKI Document: INTRO to PVHO Documentation System
Lost PVHO Documentation
In some cases, PVHO documents may not have been transferred to new owners or the documents are simply lost. Hydrospace provides a complete set of new PVHO certificates with the replacement of new windows. It does require, however, that users provide a drawing of the window to be replaced, and its accompanying design certificate (ASME PVHO-1 FORM VP2). If these no longer exist, Hydrospace provides full engineering design services to help rebuild a set of PVHO documents.
Documents you need to Order New Windows:
- Copy of PVHO Window Drawing
- Copy of ASME PVHO-1 FORM VP2 Design Cert
- Copy of Old PVHO Fabrication Certificates (if available)