IE Q Credit 5: Indoor Chemical and Pollutant Source Control 1 Point

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试卷: IEQ 室内环境质量[查看]
IE Q Credit 5: Indoor Chemical and Pollutant Source Control
1 Point

Intent
To minimize building occupant exposure to potentially hazardous particulates and chemical pollutants.

Requirements
Design to minimize and control the entry of pollutants into buildings and later cross-contamination of regularly occupied areas through the following strategies:
-- Employ permanent entryway systems at least 10 feet long in the primary direction of travel to capture dirt and particulates entering the building at regularly used exterior entrances. Acceptable entryway systems include permanently installed grates, grill s and slotted systems that allow for cleaning underneath. Roll-out mats are acceptable only when maintained on a weekly basis by a contracted service organization.
-- Sufficiently exhaust each space where hazardous gases or chemicals may be present or used (e.g., garages, housekeeping and laundry areas, copying and printing rooms) to create negative pressure with respect to adjacent spaces when the doors to the room are closed. For each of these spaces, provide self-closing doors and deck-to-deck partitions or a hard-lid ceiling. The exhaust rate must be at least 0.50 cubic feet per minute (cfm) per square foot with no air recirculation. The pressure differential with the surrounding spaces must be at least 5 Pascals (Pa) (0.02 inches of water gauge) on average and 1 Pa (0.004 inches of water) at a minimum when the doors to the rooms are closed.
-- In mechanically ventilated buildings, each ventilation system that supplies outdoor air shall comply with the following:
– Particle filters or air cleaning devices shall be provided to clean the outdoor air at any location prior to its
introduction to occupied spaces.
– These filters or devices shall be rated a minimum efficiency reporting value (MERV) of 13 or higher in
accordance with ASHRAE Standard 52.2.
– Clean air Filtration media shall be installed in all air systems after completion of construction and prior to
occupancy.

Potential Technologies & Strategies
Design facility cleaning and maintenance areas with isolated exhaust systems for contaminants. Maintain physical isolation from the rest of the regularly occupied areas of the building. Install permanent architectural entryway systems such as grills or grates to prevent occupant-borne contaminants from entering the building. Install high level filtration systems in air handling units processing outside supply air. Ensure that air handling units can accommodate required filter sizes and pressure drops.


IEQ C5: 室内化学品及污染源控制
1分

目的
最小化建筑用户暴露于有害颗粒物和化学污染。

要求
通过以下措施，最小化和控制外部污染物进入造成的使用空间的交叉污染：
-- 在建筑的常用入口，安装永久性的颗粒或脏物收集系统，至少沿进入方向10英尺长。可接
受的入口通道系统包括永久安装的格栅、条栅，且其可以清理底部。入口卷垫可以接受，
但必须有专门合同单位，按周更换。
-- 有害气体或化学品使用和出现的空间有充分的排风(例如：车房、保洁、洗衣、复印和打印
房)，当房门关闭时，与相邻空间之间要产生一个负空气压差。每个这样的房间要有顶到顶
的隔墙和自动关闭门。排风率至少要达到每平方英尺每分钟0.5立方英尺，且无循环回风。
房门关闭时，其负压差最低要达到平均5Pa、最小1Pa。
-- 机械通风建筑中，建筑入驻前，常用空间更换新的过滤介质，这些过滤器的最低效率报告
值(MERV)至少是13或更高。过滤器要对回风和室外新风都进行处理。
-- 在水与化学品可能混合场所(如保洁、清洁、科学实验室)提供合适的有害废液收集装置（像
可定期清运的容器，可安放在室外）。

技术措施和策略
对于清洁和维护设施设计独立的排风系统，与常用建筑空间保持物理隔离。安装永久性入口系
统防止将污染物带入建筑中。空气处理装置配置高效过滤器处理新风和回风。确保这些空气处
理装置有足够的过滤尺寸和合适的压力降。