1.1 本规程涵盖了在船用机械基础上安装楔块的可接受方法。 1.2 以国际单位制表示的数值应视为标准。括号中的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 3.1 本规程提供了在船用机械基础上安装楔块的三种主要方法，以确保机械在安装后无振动并完全对齐。 3.1.1 此处描述的安装楔块的三种主要方法如下: 3.1.1.1 A类 --环氧树脂，不收缩，和 3.1.1.2 B类 --两件式楔块。 3.1.1.3 C型 --实心一体式楔块。

1.1 This practice covers the acceptable methods of fitting chocks to marine machinery foundations. 1.2 The values stated in SI units shall be regarded as standard. The values in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 This practice provides the three principal methods of fitting chocks to marine machinery foundations to ensure that the machinery is free of vibration and perfectly aligned after installation. 3.1.1 The three principal methods of installing chocks described herein are as follows: 3.1.1.1 Type A —Epoxy-based resin, nonshrinking, and 3.1.1.2 Type B —Two-piece wedge chocks. 3.1.1.3 Type C —Solid, one-piece fitted chocks.