本标准为按照ASME PVHO-1设计、建造、测试和认证的PVHOs和PVHO系统的运行和维护提供了技术标准和指南。（b） 本标准为用户提供了技术标准，以确定PVHO亚克力窗在其特定环境使用条件下的适用性。解决了受保护环境和恶劣环境中的窗口问题。明智地使用本标准将允许用户和/或司法管辖机构确定何时需要更换PVHO亚克力窗。

This Standard provides technical criteria and guidelines for the operation and maintenance of PVHOs and PVHO systems that were designed, constructed, tested and certified in accordance with ASME PVHO-1. (b) This Standard provides technical criteria for the user to establish the serviceability of a PVHO acrylic window under its specific environmental service conditions. Windows in protected environments as well as those in severe environments are addressed. Judicious use of this Standard will allow the user and/or the jurisdictional authority to determine when a PVHO acrylic window requires replacement.