Power Transformer Electrical and Mechanical protection (Part 2)

This will be the second part of the table about Power Transformer Electrical and Mechanical Protection.
While I tried my best to ensure the correctness and completeness of the entries, it would be nice if someone could also share and give update on the procedures which is applied on their field of work.

INDICATORS	NATURE OF TROUBLE	EFFECTS	REMEDIAL MEASURES	NOTES
Power Transformer Bucholtz Alarm	Accumulation of gas generated inside tank	Insulation deterioration	Eject Gas	-
Power Transformer Bucholtz Trip	Severe gas generated due to decomposition of Transformer internal parts	Power Transformer Shutdown/isolation; actuates lockout relay	Determine source of gas generated, test entire Transformer for internal faults	Never energize the equipment unless satisfactory test results for operation is obtained
Power Transformer Pressure relief device operated	Excessive accumulation of internal pressure due to gas generated inside the tank	Power Transformer Shutdown/isolation; actuates lockout relay	Determine source of gas generated, test entire Transformer for internal faults	Reset Pressure relief device
Power Transformer surge relay trip	Impulsive oil rise/drop	Power Transformer Shutdown/isolation; actuates lockout relay	Determine source of gas generated, test entrie on-load tap changer tank	Check for severe internal fault due to oil leaks
Power Transformer Oil Level Alarm	Main Tank Oil leaks or over filling of insulating oil	Critical Transformer Oil Level Alarm	Check gaskets, valves, oil pipes, conservator gauge, radiator, add or reduce oil	Alarm may be due to lower maximum oil level inside tank
Power Transformer On Load Tap Changer level alarm	On Load Tap Changer Tank leaks or over filling of insulating oil	Critical Diverter Oil Level Alarm	Check gaskets, valves, oil pipes, conservator gauge, radiator, add or reduce oil	Alarm may be due to lower maximum oil level inside tank