IE Q Credit 3.2: Construction Indoor Air Quality Management Plan—Before Occ

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试卷: IEQ 室内环境质量[查看]
IE Q Credit 3.2: Construction Indoor Air Quality Management Plan—Before
Occupancy
1 Point

Intent
To reduce indoor air quality (IAQ) problems resulting from construction or renovation to promote the comfort and
well-being of construction workers and building occupants.

Requirements
Develop an IAQ management plan and implement it after all finishes have been installed and the building has been completely cleaned before occupancy.
OPTION 1. Flush-Out1
PAT H 1
After construction ends, prior to occupancy and with all interior finishes installed, install new filtration media
and , perform a building flush-out by supplying a total air volume of 14,000 cubic feet of outdoor air per square
foot of floor area while maintaining an internal temperature of at least 60° F and relative humidity no higher
than 60%.
OR
PAT H 2
If occupancy is desired prior to completion of the flush-out, the space may be occupied following delivery of
a minimum of 3,500 cubic feet of outdoor air per square foot of floor area. Once the space is occupied, it must be ventilated at a minimum rate of 0.30 cubic feet per minute (cfm) per square foot of outside air or the design minimum outside air rate determined in IEQ Prerequisite 1: Minimum Indoor Air Quality Performance, whichever is greater. During each day of the flush-out period, ventilation must begin a minimum of 3 hours prior to occupancy and continue during occupancy. These conditions must be maintained until a total of 14,000 cubic feet per square foot of outside air has been delivered to the space.
OR
OPTION 2. Air Testing
Conduct baseline IAQ testing after construction ends and prior to occupancy using testing protocols consistent with the EPA Compendium of Methods for the Determination of Air Pollutants in Indoor Air or the ISO method listed in the table below. Testing must be done in accordance with one standard; project teams may not mix requirements from the EPA Compendium of Methods with ISO.
污染物表
For each sampling point where the maximum concentration limits are exceeded, conduct an additional flushout with outside air and retest the noncompliant concentrations. Repeat until all requirements are met. Whenretesting noncompliant building areas, take samples from the same locations as in the first test, although it is not required.
Conduct the air sample testing as follows:
-- All measurements must be conducted prior to occupancy, but during normal occupied hours with the
building ventilation system started at the normal daily start time and operated at the minimum outside air
flow rate for the occupied mode throughout the test.
-- All interior finishes must be installed, including but not limited to millwork, doors, paint, carpet and
acoustic tiles. Movable furnishings such as workstations and partitions should be in place for the testing,
although it is not required.
-- The number of sampling locations will depend on the size of the building and number of ventilation
systems. The number of sampling locations must include the entire building and all representative
situations. Include areas with the least ventilation and greatest presumed source strength.
-- Air samples must be collected between 3 and 6 feet from the floor to represent the breathing zone of
occupants, and over a minimum 4-hour period.

Potential Technologies & Strategies
Prior to occupancy, perform a building flush-out or test the air contaminant levels in the building. The flush-out is often used where occupancy is not required immediately upon substantial completion of construction. IAQ
testing can minimize schedule impacts but may be more costly. Coordinate with IEQ Credit 3.1: Construction
IAQ Management Plan — During Construction and IEQ Credit 5: Indoor Chemical & Pollutant Source Control to
determine the appropriate specifications and schedules for filtration media.
The intent of this credit is to eliminate IAQ problems that occur as a result of construction. Architectural finishes
used in tenant build-outs constitute a significant source of air pollutants and must be addressed to qualify for this
credit.

IEQ C3.2: 施工室内空气质量管理—入驻前
1分

目的
减少由于施工或改造造成的室内空气质量问题，为施工人员和建筑用户提供健康、舒适的环境。

要求
制定一个室内控制质量管理方案，在工程所有安装结束后、入驻前，对建筑进行彻底清理。
选项1. 吹洗1
方式1
工程完工后，在所有室内装修完成入驻前，安装新的过滤介质对建筑实行吹洗，吹洗新风量
要为每平方英尺楼板面积达到14,000立方英尺，保持室内温度至少60°F和相对湿度不高于
60%。
或者
方式2
如吹洗结束前要入驻，要进入的区域每平方英尺楼板面积最少要完成3,500立方吹洗风量。一
旦这些区域入驻，按照IEQ P1确定的风量或最低每平方英尺每分钟0.30立方英尺(CFM)进行通
风，每天的吹洗期间，在使用前或使用中必须最少达到3小时。这些过程一直持续到总吹洗风
量达到每平方英尺14,000立方英尺的室外风量。
或者
选项2. 空气测试
按照EPA的室内污染物测定方法概要，以及LEED-2009参考手册的补充细节所给出的测试方
法，工程结束后进行室内空气质量测试。
对于每个超标采样点，要再次进行新风吹洗并再次检测，直到达标为止。复测未达标区域时，
同一位置进行所有取样，虽然这非必须要求。
取样按如下进行:
-- 所有测试须在入驻前，但要按照入驻状态在正常使用时间内，通风系统运行正常启动，并
达到最低通风率。
-- 所有室内装修需完成，包括但不限于：打磨、门、油漆、地毯、吸音板。可移动的家俱如
工作台与隔断也应布置到位（非必须）。
-- 检测点的数量取决于建筑的大小和通风系统的数量。对于各部分独立通风的情况，连续楼
面时每25,000平方英尺不得少于1点，应包含最低通风和假定有污染源的区域。
-- 空气取样高度应在3～6英尺之间，以反映用户的呼吸位置，并且覆盖至少4小时期间(工作
时间)。

技术措施和策略
入驻前，实行建筑吹洗或进行空气污染物检测，吹洗通常对于工程完工后不急于入驻的情况，
室内空气质量检测可降低时间的要求，但比较花费。参照项目IEQ C3.1“施工室内空气质量管
理—施工中”和IEQ C5“室内化学品及污染源控制”来确定适合的过滤介质规格和周期。
本项之目的是消除施工带来的室内控制质量问题，租户的建筑装饰装修对室内污染有重要的影
响，在考虑本项目时必须予以量化纳入。