IEEE DRAFT C57.121 : D4 OCT 96

1 Introduction
 1.1 Scope
 1.2 Purpose
 1.3 References
 1.4 System Design
 1.5 Background Information
    1.5.1 Mixtures of LFH Fluids with Other Liquids
    1.5.2 Mixtures of Different Types of LFH Fluids
2 Fluid Tests and the Significance of Each Test
 2.1 Neutralization Number (D664, D974)
 2.2 Dielectric Breakdown Voltage (D877, D1816)
 2.3 Dielectric Breakdown Voltage, Impulse (D3300)
 2.4 Interfacial Tension (D971)
 2.5 AC Loss Characteristics: Relative Permittivity
             (Dielectric Constant) and Dissipation Factor (D924)
 2.6 Color (D1500)
 2.7 Viscosity (D88, D445, D2161)
 2.8 Flash Point and Fire Point (D92)
             (Cleveland Open Cup Method)
 2.9 Specific Gravity (Relative Density) (D1298)
 2.10 Pour Point (D97)
 2.11 Resistivity (D1169)
 2.12 Gas Analysis (D2945, D3284, D3305, D3612, D3613)
 2.13 Inorganic Chlorides and Sulfates (D878)
 2.14 Corrosive Sulfur (D1275)
 2.15 Oxidation Stability (D2112)
 2.16 Water in Insulating Fluid: Extraction Method
             (D1315) and Karl Fischer Method (D1533)
 2.17 Oxidation Inhibitors in Electrical Insulating
             Fluids (D1473, D2668)
 2.18 Visual Examination Field Test (D1524)
 2.19 Refractive Index and Specific Optical
             Dispersion (D1807)
 2.20 Gassing of Insulating Oils under Electrical Stress
             and Ionization (D2300)
 2.21 Aniline Point (D611)
3 Handling and Evaluation of LFH Fluids for Use
             in Filling Transformers at the Installation Site
 3.1 Shipping Containers
 3.2 Check Tests on Receipt
 3.3 Handling of the Fluid by the User and Placing
             the Fluid in Storage
    3.3.1 Tanks
    3.3.2 Venting
    3.3.3 Pumps
 3.4 The Handling and Testing of LFH Fluids for
             Installation into Apparatus
4 Evaluation of LFH Fluids Received in New Equipment
             and After Filling Apparatus at the Installation Site
5 Maintenance of LFH Fluids
 5.1 Field Screening
 5.2 Laboratory Screening
 5.3 Test Limits for Service-Aged LFH Fluids
 5.4 Reconditioning
    5.4.1 Moisture Removal Filters
 5.5 Reclaiming
 5.6 Mixtures of Different Types of LFH Fluids
6 Safety and Environmental Care Procedures
 6.1 Leaks 19
 6.2 Minor Spills
 6.3 Spills on Soil
 6.4 Spills on Water
7 Bibliography
TABLES
Table 1 Acceptable Values for Receipt of Bulk Shipments
             of LFH Fluids
Table 2 Acceptable Values for LFH Fluids Received in
             New Equipment
Table 3 Acceptable Values for Continued Use of
             Service-Aged LFH Fluids