Page 401 - Industrial Ventilation Design Guidebook

356 CHAPTER 6 TARGET LEVELS

63.4 Hot Environments 382
6.3.5 Cold Environments 385
6.3.6 Supporting Standards 388
6.3.7 Heasurements on Individuals 392
6.3.8 Other and Future Standards 395
6.3.9 Conclusion 395
6.3.10 Examples 39S
References 395
6.4 TARGET LEVELS FOR INDUSTRIAL AIR QUALITY 397
RAIMO NIEMELA
6.4.1 Introduction 397
6.4.2 Grounds for Assessing TLs for Industrial Air Quality 399
6.4.3 Target Levels for Common Contaminants 402
6.4.4 Use of TLs 404
References 405
6.5 REQUIREMENTS DUE TO BUILDING CONSTRUCTION, EQUIPMENT,
PROCESSES, AND TYPE OF PRODUCTION PREMISES 405
LARS OLANDER AND KIM HAGSTROM
6.5.1 Introduction 405
6.5.2 Ventilation Parameters that Influence the Building Construction and Process Design 407
6.5.3 Building and Process Parameters that Influence the Ventilation System 410
6.5.4 Summary 413
References 413

6.1 DEFINITIONS AND CONNECTION TO DESIGN METHODOLOGY

6.1.1 Introduction

In process technology and in the manufacture of equipment and systems, the
starting point of design includes very precise targets. For example, in car man-
ufacture target levels for main characteristics of the car (e.g., acceleration,
maximum speed, and gasoline consumption) are already set in the drawing ta-
ble. In this case the target values of engineering are also the characteristics to
be validated when the product is ready.
Target levels (TLs) refer to the expected values of the system that are de-
termined at the early stages of the design process. Fulfillment of the target lev-
els should be validated or measured by the individuals or organizations
responsible at the end of the construction process. Target levels are needed as
a standard against which system solutions are compared. During the compari-
son it may be found that target values cannot be met by any solution or they
can lead to very expensive solutions. In such cases the target levels have to be