UL 1978:4ED 2010-12
Current
The latest, up-to-date edition.
Grease Ducts
Hardcopy
13-12-2010
Foreword
Introduction
1 Scope
2 General
3 Glossary
4 Installation instructions
Construction
5 Materials
6 Assembly
7 Joints
8 Support assembly
Performance
9 General
10 Test installations
11 Temperature measurement
12 Temperature test - 500 deg F (260 deg C) flue gases
13 Abnormal temperature test
14 Leakage test
15 Vertical support test
16 Strength tests
17 Fire and leakage test of grease duct access doors and
fittings
18 Pressure tests for fittings exposed to fire
extinguishing system pressure
19 Tensile strength, elongation, and change in volume
tests of gaskets and seals
Marking
20 General
Appendix A - Standards for components
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