We (METZ LAB PRIVATE LIMITED) did Insitu matallography study in Reformer at NFL, Nangal. Report is enclosed.

1. 1.0 INTRODUCTION
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
surplus power
fertilizer plant at Nangal, which went to production in 1961.
Ammonium Nitrate (25% Nitrogen) and heavy water.
Plant based on fuel oil gasification which added Urea
1990. Electrolysis plant was replaced with Front End Plant(NMP
Naphtha production of hydrogen and reducing the electrical power con
2.0 IN-SITU METALLOGRAPHY
In
any degradation or abnormality present in the equipment due to the operational conditions.
Pressure and temperature plays an
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
by gener
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment
components, microstructural evaluation of the component has become powerful tool.
The technique of in situ metallography involves location s
&polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
microstructural observation. The kit of in
light
CUSTOMER
NATURE OF TEST
TEST REFERENCE
DATE OF TESTING
SAMPLE DRAWN
First floor, Thangavel Nagar
Contact: +91
INTRODUCTION
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
surplus power available from the project at the time. It was derived by Govt. Of India to set a
fertilizer plant at Nangal, which went to production in 1961.
Ammonium Nitrate (25% Nitrogen) and heavy water.
Plant based on fuel oil gasification which added Urea
1990. Electrolysis plant was replaced with Front End Plant(NMP
Naphtha production of hydrogen and reducing the electrical power con
SITU METALLOGRAPHY
In-Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
Pressure and temperature plays an
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
by generating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment
components, microstructural evaluation of the component has become powerful tool.
The technique of in situ metallography involves location s
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
microstructural observation. The kit of in
CUSTOMER
NATURE OF TEST
EST REFERENCE
DATE OF TESTING
SAMPLE DRAWN
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
fertilizer plant at Nangal, which went to production in 1961.
Ammonium Nitrate (25% Nitrogen) and heavy water.
Plant based on fuel oil gasification which added Urea
1990. Electrolysis plant was replaced with Front End Plant(NMP
Naphtha production of hydrogen and reducing the electrical power con
SITU METALLOGRAPHY –
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
Pressure and temperature plays an
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment
components, microstructural evaluation of the component has become powerful tool.
The technique of in situ metallography involves location s
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
microstructural observation. The kit of in
NATIONAL FERTILIZERS LIMITED,
NAYA NANGAL
INSITU
ASM Vol.9,17 & ASTM E 1351,
ASTM E 407.
09 To 11
By Customer @
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
Test Report
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
fertilizer plant at Nangal, which went to production in 1961.
Ammonium Nitrate (25% Nitrogen) and heavy water.
Plant based on fuel oil gasification which added Urea
1990. Electrolysis plant was replaced with Front End Plant(NMP
Naphtha production of hydrogen and reducing the electrical power con
METHOD
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
Pressure and temperature plays an important role in degradation mechanism for alloys like
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment
components, microstructural evaluation of the component has become powerful tool.
The technique of in situ metallography involves location s
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
microstructural observation. The kit of in-
NATIONAL FERTILIZERS LIMITED,
NAYA NANGAL
INSITU-METALLOGRAPHY
ASM Vol.9,17 & ASTM E 1351,
ASTM E 407.
09 To 11-May
By Customer @
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
Test Report
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
fertilizer plant at Nangal, which went to production in 1961.
Ammonium Nitrate (25% Nitrogen) and heavy water. Subsequently In 1978 went an A
Plant based on fuel oil gasification which added Urea
1990. Electrolysis plant was replaced with Front End Plant(NMP
Naphtha production of hydrogen and reducing the electrical power con
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
important role in degradation mechanism for alloys like
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment
components, microstructural evaluation of the component has become powerful tool.
The technique of in situ metallography involves location s
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
-situ metallography comprises of portable grinder,
NATIONAL FERTILIZERS LIMITED,
NAYA NANGAL,PUNJAB-
METALLOGRAPHY
ASM Vol.9,17 & ASTM E 1351,
May-16
By Customer @ NFL Nangal
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
Test Report
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
fertilizer plant at Nangal, which went to production in 1961. The plant at that time produce
Subsequently In 1978 went an A
Plant based on fuel oil gasification which added Urea (46% Nitrogen) to its main product in
1990. Electrolysis plant was replaced with Front End Plant(NMP
Naphtha production of hydrogen and reducing the electrical power con
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
important role in degradation mechanism for alloys like
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment
components, microstructural evaluation of the component has become powerful tool.
The technique of in situ metallography involves location selection, mechanical grinding
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
situ metallography comprises of portable grinder,
NATIONAL FERTILIZERS LIMITED,
-140126
METALLOGRAPHY
ASM Vol.9,17 & ASTM E 1351, API-571
NFL Nangal
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
The plant at that time produce
Subsequently In 1978 went an A
(46% Nitrogen) to its main product in
1990. Electrolysis plant was replaced with Front End Plant(NMP-I) based on reforming of
Naphtha production of hydrogen and reducing the electrical power consumption.
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
important role in degradation mechanism for alloys like
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
failure and for safe and reliable operation. Due to critical assessment requirement of plant
components, microstructural evaluation of the component has become powerful tool.
election, mechanical grinding
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
situ metallography comprises of portable grinder,
REPORT No: MT /SBI /001
Metz Lab Private Limited
Page 1
600 048
www.metzlab.org
Date : 28/05
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
The plant at that time produce
Subsequently In 1978 went an Ammonia
(46% Nitrogen) to its main product in
I) based on reforming of
sumption.
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
important role in degradation mechanism for alloys like
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
requirement of plant
components, microstructural evaluation of the component has become powerful tool.
election, mechanical grinding
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
situ metallography comprises of portable grinder,
REPORT No: MT /SBI /001
1 of 27
5/2016
NFL Nangal isthe first key industry set up by Govt. Of INDIA with coming up of Bhakhra Dam &
available from the project at the time. It was derived by Govt. Of India to set a
The plant at that time produce
mmonia
(46% Nitrogen) to its main product in
I) based on reforming of
Situ Metallographic testing is carried out to determine the conditions with respect to
any degradation or abnormality present in the equipment due to the operational conditions.
important role in degradation mechanism for alloys like
plain carbon, medium carbon and high alloy steels used in different process plant application.
Principally, addition of alloying elements increases ability to withstand severe process demands
ating proper metallurgical conditions in an alloy. Various NDT Inspections are carried
out on operating plants for various reasons like, condition assessment, life assessment to avoid
requirement of plant
election, mechanical grinding
polishing / electrolytic polishing, electrolytic etching or chemical etching, replication and
situ metallography comprises of portable grinder,
REPORT No: MT /SBI /001

2. grinder with variable speed controlle
consumables. The consumables can be listed as self
size, self-
electrolytes and replica films
3.0 DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
petrochemical,
The principle deterioration mechanisms that could be detected by using in situ
metallographic
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
and damages can be predicted.
3.
involves time dependent deformation and high temperature creep cracking, develops at
grain boundaries in
include boiler super
petrochemical furnace and react
temperatures, with local over
strains and wall thinning. At
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
largely qualitative approach based
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
for evaluation of creep damage and provide
given in Table. In situ metallography used in conjunction with semi quantitative tools
First floor, Thangavel Nagar
Contact: +91
grinder with variable speed controlle
consumables. The consumables can be listed as self
-adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
rolytes and replica films
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
petrochemical, pulp and paper, and fossil utility are covered in this Sectio
The principle deterioration mechanisms that could be detected by using in situ
metallographic techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
and damages can be predicted.
3.1. CREEP DAMAGE:
Creep is
involves time dependent deformation and high temperature creep cracking, develops at
grain boundaries in
include boiler super
petrochemical furnace and react
temperatures, with local over
strains and wall thinning. At
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
largely qualitative approach based
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
for evaluation of creep damage and provide
given in Table. In situ metallography used in conjunction with semi quantitative tools
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
grinder with variable speed controlle
consumables. The consumables can be listed as self
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
rolytes and replica films
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
pulp and paper, and fossil utility are covered in this Sectio
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
and damages can be predicted.
CREEP DAMAGE:
Creep is one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
grain boundaries in engineering components that fail over an extended time. These
include boiler super-heate
petrochemical furnace and react
temperatures, with local over
strains and wall thinning. At
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
largely qualitative approach based
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
for evaluation of creep damage and provide
given in Table. In situ metallography used in conjunction with semi quantitative tools
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
grinder with variable speed controller, electrolytic etcher/polisher, microscope and variety of
consumables. The consumables can be listed as self
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
pulp and paper, and fossil utility are covered in this Sectio
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
engineering components that fail over an extended time. These
heater and other components operating at high temperature,
petrochemical furnace and reactor vessel components and gas turbine blades. At higher
temperatures, with local overheating, deformation may be localized with large plastic
strains and wall thinning. At somewhat lower temperatures and under correspondingly
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
largely qualitative approach based
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
for evaluation of creep damage and provide
given in Table. In situ metallography used in conjunction with semi quantitative tools
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
r, electrolytic etcher/polisher, microscope and variety of
consumables. The consumables can be listed as self-adhesive polishing papers of different grit
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
pulp and paper, and fossil utility are covered in this Sectio
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
engineering components that fail over an extended time. These
and other components operating at high temperature,
vessel components and gas turbine blades. At higher
eating, deformation may be localized with large plastic
somewhat lower temperatures and under correspondingly
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
on distribution of creep voids and micro cracks
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
for evaluation of creep damage and provide judgment on the inspection intervals are
given in Table. In situ metallography used in conjunction with semi quantitative tools
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
r, electrolytic etcher/polisher, microscope and variety of
adhesive polishing papers of different grit
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
pulp and paper, and fossil utility are covered in this Sectio
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
engineering components that fail over an extended time. These
and other components operating at high temperature,
vessel components and gas turbine blades. At higher
eating, deformation may be localized with large plastic
somewhat lower temperatures and under correspondingly
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
on distribution of creep voids and micro cracks
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
judgment on the inspection intervals are
given in Table. In situ metallography used in conjunction with semi quantitative tools
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
REPORT No: MT /
r, electrolytic etcher/polisher, microscope and variety of
adhesive polishing papers of different grit
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
pulp and paper, and fossil utility are covered in this Section.
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
engineering components that fail over an extended time. These
and other components operating at high temperature,
vessel components and gas turbine blades. At higher
eating, deformation may be localized with large plastic
somewhat lower temperatures and under correspondingly
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
on distribution of creep voids and micro cracks
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
judgment on the inspection intervals are
given in Table. In situ metallography used in conjunction with semi quantitative tools
Metz Lab Private Limited
Page 2
600 048
www.metzlab.org
REPORT No: MT / SBI /001
r, electrolytic etcher/polisher, microscope and variety of
adhesive polishing papers of different grit
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
DAMAGE MECHANISMS THAT ARE DETECTED THROUGH MICROSTRUCTURESTUDIES
Damage mechanisms that are common to a variety of industries including refining and
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
creep, hydrogen attack, carburization, grain boundary oxidization and em-brittlement of
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
engineering components that fail over an extended time. These
and other components operating at high temperature,
vessel components and gas turbine blades. At higher
eating, deformation may be localized with large plastic
somewhat lower temperatures and under correspondingly
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
on distribution of creep voids and micro cracks
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
judgment on the inspection intervals are
given in Table. In situ metallography used in conjunction with semi quantitative tools
2 of 27
SBI /001
r, electrolytic etcher/polisher, microscope and variety of
adhesive polishing papers of different grit
adhesive velvet cloth, solvents, water bottles, diamond paste, and suspended alumina,
Damage mechanisms that are common to a variety of industries including refining and
The principle deterioration mechanisms that could be detected by using in situ
techniques are the microstructural degradation like Spheroidization of pearlite,
lement of
microstructure etc. Aspects of each will be considered in turn. Depending upon the alloys used
and microstructure conditions with expertise on interpretations skills many other mechanisms
one of the most serious high temperature damage mechanisms. It
involves time dependent deformation and high temperature creep cracking, develops at
engineering components that fail over an extended time. These
and other components operating at high temperature,
vessel components and gas turbine blades. At higher
eating, deformation may be localized with large plastic
somewhat lower temperatures and under correspondingly
higher stress level. The fracture is eventually intergranule in nature. Classification of
creep damage in the components exposed to creep range has been made using the
on distribution of creep voids and micro cracks
observed by in situ metallography. The three stages of creep and associated
microstructure degradations are represented in the sketch given below. Basic guidelines
judgment on the inspection intervals are
given in Table. In situ metallography used in conjunction with semi quantitative tools

3. like hardness measurements indicating loss of tensile strength would permit remaining
life assessment
at this juncture is that
by displaying spheroidzation of carbides but with little void formation.
First floor, Thangavel Nagar
Contact: +91
like hardness measurements indicating loss of tensile strength would permit remaining
life assessment
at this juncture is that
by displaying spheroidzation of carbides but with little void formation.
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
like hardness measurements indicating loss of tensile strength would permit remaining
life assessment studies on components undergoing creep damage. A point worth noting
at this juncture is that the chrome Molly steels are liable to fail by creep in a short time
by displaying spheroidzation of carbides but with little void formation.
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
like hardness measurements indicating loss of tensile strength would permit remaining
studies on components undergoing creep damage. A point worth noting
the chrome Molly steels are liable to fail by creep in a short time
by displaying spheroidzation of carbides but with little void formation.
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
like hardness measurements indicating loss of tensile strength would permit remaining
studies on components undergoing creep damage. A point worth noting
the chrome Molly steels are liable to fail by creep in a short time
by displaying spheroidzation of carbides but with little void formation.
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
like hardness measurements indicating loss of tensile strength would permit remaining
studies on components undergoing creep damage. A point worth noting
the chrome Molly steels are liable to fail by creep in a short time
by displaying spheroidzation of carbides but with little void formation.
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
REPORT No: MT /
like hardness measurements indicating loss of tensile strength would permit remaining
studies on components undergoing creep damage. A point worth noting
the chrome Molly steels are liable to fail by creep in a short time
by displaying spheroidzation of carbides but with little void formation.
Metz Lab Private Limited
Page 3
600 048
www.metzlab.org
REPORT No: MT / SBI /001
like hardness measurements indicating loss of tensile strength would permit remaining
studies on components undergoing creep damage. A point worth noting
the chrome Molly steels are liable to fail by creep in a short time
3 of 27
SBI /001
like hardness measurements indicating loss of tensile strength would permit remaining
studies on components undergoing creep damage. A point worth noting
the chrome Molly steels are liable to fail by creep in a short time

4. 3.2
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
with etching
3.
temperature to
steel can be found out
3.
decreases the
examination.
3.
instance, sigma
temperature or cycled
loss of ductility an
embrittlement phenomenon when
400
checks are employed after exten
developing. Cracks can initiate from the brittle
resistance to bending. This can be detected by
are compared with the normal microstructures
of degradations.
First floor, Thangavel Nagar
Contact: +91
3.2 HIGH TEMPERATURE OXIDATION:
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
with etching response
3.3. DECARBURISATION:
The carbon in the steel can react with oxygen and in the atmosphere at high
temperature to
steel can be found out
3.4. GRAIN COARSENING:
Grain coarsening takes place with prolonged high temperature exposure which
decreases the
examination.
3.5. EMBRITTLEMENT AND CARBURIZATION
Embrittlement
instance, sigma
temperature or cycled
loss of ductility an
embrittlement phenomenon when
400o
C. If the temperature conditions are
checks are employed after exten
developing. Cracks can initiate from the brittle
resistance to bending. This can be detected by
are compared with the normal microstructures
of degradations.
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
HIGH TEMPERATURE OXIDATION:
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
response during
DECARBURISATION:
The carbon in the steel can react with oxygen and in the atmosphere at high
temperature to get decarburization of the surface. The loss of carbon in the surface of
steel can be found out from microstructure examinations
GRAIN COARSENING:
Grain coarsening takes place with prolonged high temperature exposure which
decreases the strength of the steel. This can be easily noticed by microstructure
examination.
EMBRITTLEMENT AND CARBURIZATION
Embrittlement from precipitations arise in a number of different ways for
instance, sigma phase formation in austenitic stainless steels maintained at high
temperature or cycled through the critical temperature range of 565 to 989
loss of ductility and embrit
embrittlement phenomenon when
C. If the temperature conditions are
checks are employed after exten
developing. Cracks can initiate from the brittle
resistance to bending. This can be detected by
are compared with the normal microstructures
of degradations.
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
HIGH TEMPERATURE OXIDATION:
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
during insitu metallography.
DECARBURISATION:
The carbon in the steel can react with oxygen and in the atmosphere at high
get decarburization of the surface. The loss of carbon in the surface of
from microstructure examinations
GRAIN COARSENING:
Grain coarsening takes place with prolonged high temperature exposure which
strength of the steel. This can be easily noticed by microstructure
EMBRITTLEMENT AND CARBURIZATION
from precipitations arise in a number of different ways for
phase formation in austenitic stainless steels maintained at high
through the critical temperature range of 565 to 989
mbrittlement. Ferritic stainless steels may be subjected to
embrittlement phenomenon when held at or cooled over the temperature range 550 to
C. If the temperature conditions are
checks are employed after exten
developing. Cracks can initiate from the brittle
resistance to bending. This can be detected by
are compared with the normal microstructures
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
HIGH TEMPERATURE OXIDATION:
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
metallography.
The carbon in the steel can react with oxygen and in the atmosphere at high
get decarburization of the surface. The loss of carbon in the surface of
from microstructure examinations
Grain coarsening takes place with prolonged high temperature exposure which
strength of the steel. This can be easily noticed by microstructure
EMBRITTLEMENT AND CARBURIZATION
from precipitations arise in a number of different ways for
phase formation in austenitic stainless steels maintained at high
through the critical temperature range of 565 to 989
tlement. Ferritic stainless steels may be subjected to
held at or cooled over the temperature range 550 to
C. If the temperature conditions are likely to lead to such effects, metallographic
checks are employed after extended exposure
developing. Cracks can initiate from the brittle
resistance to bending. This can be detected by
are compared with the normal microstructures on comparison basis to
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
metallography.
The carbon in the steel can react with oxygen and in the atmosphere at high
get decarburization of the surface. The loss of carbon in the surface of
from microstructure examinations.
Grain coarsening takes place with prolonged high temperature exposure which
strength of the steel. This can be easily noticed by microstructure
from precipitations arise in a number of different ways for
phase formation in austenitic stainless steels maintained at high
through the critical temperature range of 565 to 989
tlement. Ferritic stainless steels may be subjected to
held at or cooled over the temperature range 550 to
likely to lead to such effects, metallographic
ded exposure prior to an unexpected rupture
developing. Cracks can initiate from the brittle carburized layer, which has little
resistance to bending. This can be detected by metallography.
on comparison basis to
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
REPORT No: MT /
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
The carbon in the steel can react with oxygen and in the atmosphere at high
get decarburization of the surface. The loss of carbon in the surface of
Grain coarsening takes place with prolonged high temperature exposure which
strength of the steel. This can be easily noticed by microstructure
from precipitations arise in a number of different ways for
phase formation in austenitic stainless steels maintained at high
through the critical temperature range of 565 to 989
tlement. Ferritic stainless steels may be subjected to
held at or cooled over the temperature range 550 to
likely to lead to such effects, metallographic
prior to an unexpected rupture
carburized layer, which has little
metallography. Normally the damages
on comparison basis to
Metz Lab Private Limited
Page 4
600 048
www.metzlab.org
REPORT No: MT / SBI /001
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
The carbon in the steel can react with oxygen and in the atmosphere at high
get decarburization of the surface. The loss of carbon in the surface of
Grain coarsening takes place with prolonged high temperature exposure which
strength of the steel. This can be easily noticed by microstructure
from precipitations arise in a number of different ways for
phase formation in austenitic stainless steels maintained at high
through the critical temperature range of 565 to 989 o
C causes
tlement. Ferritic stainless steels may be subjected to
held at or cooled over the temperature range 550 to
likely to lead to such effects, metallographic
prior to an unexpected rupture
carburized layer, which has little
Normally the damages
judge the extent
4 of 27
SBI /001
Under highly oxidizing atmosphere grain boundary oxidization takes place that
penetrate inside. Thus, the thickening of grain boundaries in carbon steels can be seen
The carbon in the steel can react with oxygen and in the atmosphere at high
get decarburization of the surface. The loss of carbon in the surface of
Grain coarsening takes place with prolonged high temperature exposure which
strength of the steel. This can be easily noticed by microstructure
from precipitations arise in a number of different ways for
phase formation in austenitic stainless steels maintained at high
C causes
tlement. Ferritic stainless steels may be subjected to
held at or cooled over the temperature range 550 to
likely to lead to such effects, metallographic
prior to an unexpected rupture
carburized layer, which has little
Normally the damages
judge the extent

5. 4.0 PROCEDURE FOR INSITU METALLOGRAPHY EXAMINATIONS
4.1.
Naya Nangal
4.2.
4.3.
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
to go too deep nor more than 1.0
papers
proceeding paper. Once the Grinding steps are completed, the area is ready for
Polishing.
Polisher Using Lavigated
(i.e. 6
Once the polishing steps are completed, the area is ready for
locations as per table. Refer page 5 and 6.
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
approximately 30 seconds, and then
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
or a smudged replica will
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
put into a separate
double
appropriately.
First floor, Thangavel Nagar
Contact: +91
4.0 PROCEDURE FOR INSITU METALLOGRAPHY EXAMINATIONS
4.1. SCOPE
To Examine
Naya Nangal, by
4.2. APPARATUS & MATERIALS:
 Metallurgical Microscope.
 Hand Grinding Machine
 Portable Polishing Machines & Diamond Paste
 Etching Reagents as per table
 Replica Kit
 Polishing papers, sylvet cloth, polishing media, thermo setting or therm
4.3. SPECIMEN PREPARATION TECHNIQUE
 Grinding
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
to go too deep nor more than 1.0
papers (80- Grit To 1
proceeding paper. Once the Grinding steps are completed, the area is ready for
Polishing.
 Polishing
Polisher Using Lavigated
(i.e. 6-micron diamond compound followed by 1
Once the polishing steps are completed, the area is ready for
 Etching
locations as per table. Refer page 5 and 6.
 Replication
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
approximately 30 seconds, and then
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
or a smudged replica will
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
put into a separate
double-sided tape. Several Replicas should be made of each area and should be labelled
appropriately.
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
4.0 PROCEDURE FOR INSITU METALLOGRAPHY EXAMINATIONS
To Examine the microstructure of the
by the Insitu
APPARATUS & MATERIALS:
Metallurgical Microscope.
Hand Grinding Machine
Portable Polishing Machines & Diamond Paste
Etching Reagents as per table
Replica Kit
Polishing papers, sylvet cloth, polishing media, thermo setting or therm
SPECIMEN PREPARATION TECHNIQUE
Grinding –Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
to go too deep nor more than 1.0
Grit To 172
proceeding paper. Once the Grinding steps are completed, the area is ready for
Polishing - Wash the sample thoroughly an
Polisher Using Lavigated
micron diamond compound followed by 1
Once the polishing steps are completed, the area is ready for
Etching – to etch the reagents in the mirror finished surface of the test required
locations as per table. Refer page 5 and 6.
Replication – A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
approximately 30 seconds, and then
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
or a smudged replica will
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
put into a separate contain
sided tape. Several Replicas should be made of each area and should be labelled
appropriately.
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
4.0 PROCEDURE FOR INSITU METALLOGRAPHY EXAMINATIONS
the microstructure of the
Insitu-Metallograph
APPARATUS & MATERIALS:
Metallurgical Microscope.
Hand Grinding Machine
Portable Polishing Machines & Diamond Paste
Etching Reagents as per table
Polishing papers, sylvet cloth, polishing media, thermo setting or therm
SPECIMEN PREPARATION TECHNIQUE
Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
to go too deep nor more than 1.0
Grit Paper)should be done in a particular direction to that of
proceeding paper. Once the Grinding steps are completed, the area is ready for
Wash the sample thoroughly an
Aluminium oxide Suspension or Magnesium oxide Suspension
micron diamond compound followed by 1
Once the polishing steps are completed, the area is ready for
to etch the reagents in the mirror finished surface of the test required
locations as per table. Refer page 5 and 6.
A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
approximately 30 seconds, and then
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
or a smudged replica will be obtained. Let the replica remain in this position until it
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
container (usually a small Plastic box
sided tape. Several Replicas should be made of each area and should be labelled
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
4.0 PROCEDURE FOR INSITU METALLOGRAPHY EXAMINATIONS
the microstructure of the fertilizer unit @
Metallography.
Portable Polishing Machines & Diamond Paste
Etching Reagents as per table
Polishing papers, sylvet cloth, polishing media, thermo setting or therm
SPECIMEN PREPARATION TECHNIQUE -
Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
to go too deep nor more than 1.0 mm from
Grit Paper)should be done in a particular direction to that of
proceeding paper. Once the Grinding steps are completed, the area is ready for
Wash the sample thoroughly an
Aluminium oxide Suspension or Magnesium oxide Suspension
micron diamond compound followed by 1
Once the polishing steps are completed, the area is ready for
to etch the reagents in the mirror finished surface of the test required
locations as per table. Refer page 5 and 6.
A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
shake to remove excess acetone. The soften side is
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
be obtained. Let the replica remain in this position until it
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
er (usually a small Plastic box
sided tape. Several Replicas should be made of each area and should be labelled
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
4.0 PROCEDURE FOR INSITU METALLOGRAPHY EXAMINATIONS
fertilizer unit @
Portable Polishing Machines & Diamond Paste
Polishing papers, sylvet cloth, polishing media, thermo setting or therm
Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
mm from surface. Grind
Grit Paper)should be done in a particular direction to that of
proceeding paper. Once the Grinding steps are completed, the area is ready for
Wash the sample thoroughly and finally polish by the Portable
Aluminium oxide Suspension or Magnesium oxide Suspension
micron diamond compound followed by 1-micron diamond compound polish).
Once the polishing steps are completed, the area is ready for
to etch the reagents in the mirror finished surface of the test required
A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
shake to remove excess acetone. The soften side is
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
be obtained. Let the replica remain in this position until it
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
er (usually a small Plastic box, or taped to a glass slide with
sided tape. Several Replicas should be made of each area and should be labelled
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
REPORT No: MT /
fertilizer unit @ National Fertilizers Limited,
Polishing papers, sylvet cloth, polishing media, thermo setting or therm
Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
surface. Grind the surface with emery
Grit Paper)should be done in a particular direction to that of
proceeding paper. Once the Grinding steps are completed, the area is ready for
d finally polish by the Portable
Aluminium oxide Suspension or Magnesium oxide Suspension
micron diamond compound polish).
Once the polishing steps are completed, the area is ready for Etching.
to etch the reagents in the mirror finished surface of the test required
A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
shake to remove excess acetone. The soften side is
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
be obtained. Let the replica remain in this position until it
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
, or taped to a glass slide with
sided tape. Several Replicas should be made of each area and should be labelled
Metz Lab Private Limited
Page 5
600 048
www.metzlab.org
REPORT No: MT / SBI /001
National Fertilizers Limited,
Polishing papers, sylvet cloth, polishing media, thermo setting or thermo plastics.
Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken no
the surface with emery
Grit Paper)should be done in a particular direction to that of
proceeding paper. Once the Grinding steps are completed, the area is ready for
d finally polish by the Portable
Aluminium oxide Suspension or Magnesium oxide Suspension
micron diamond compound polish).
to etch the reagents in the mirror finished surface of the test required
A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
shake to remove excess acetone. The soften side is
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
be obtained. Let the replica remain in this position until it
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
, or taped to a glass slide with
sided tape. Several Replicas should be made of each area and should be labelled
5 of 27
SBI /001
National Fertilizers Limited,
o plastics.
Flatten the specimen with hand grinder to minimum depth to get
surface free from pin holes/ scaling/ pitting/surface corrosions and care to be taken not
the surface with emery
Grit Paper)should be done in a particular direction to that of
proceeding paper. Once the Grinding steps are completed, the area is ready for
d finally polish by the Portable
Aluminium oxide Suspension or Magnesium oxide Suspension
micron diamond compound polish).
to etch the reagents in the mirror finished surface of the test required
A small piece of cellulose acetate, 3 to 5mm thick and
approximately three times the size of the area to be replicated, is held by tweezers and
softened on one side only. Apply acetone with an eyedropper, allow to set for
shake to remove excess acetone. The soften side is
then pressed firmly against the area with the eraser end of a pencil or tip of the fingers
and helped several seconds. Care must be taken that the acetate is not allowed to slip
be obtained. Let the replica remain in this position until it
hardens, usually 10 to 15 minutes, depending upon the size of the replica. Once it has
hardened it can be stripped with tweezers. At this point the stripped replica should be
, or taped to a glass slide with
sided tape. Several Replicas should be made of each area and should be labelled

6. 4.
5
First floor, Thangavel Nagar
Contact: +91
.4 PROCEDURE
 Examination
400X 500X and
be made.
 Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
magnification for the following.
o Microstructure
o Condition of Metals
o Grain Size
o Decarburization if any
o Internal Granular Cracks if any
o Any other Micro Defects.
 The Microphotographs can be taken for any of the above features, if desired on
Metallurgical Microscope.
5 RESULT (observation and recommendation)
 In many spots no microstructural deformation observed
 Some spots having
these spots need inspection after 20,000 hours of operation
 For detailed
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
PROCEDURE – EXAMINATION OF REPLICA
Examination of replica carried out with the Metallurgical Microscope at 100 X &
400X 500X and photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
ation for the following.
Microstructure
Condition of Metals
Grain Size
Decarburization if any
Internal Granular Cracks if any
Any other Micro Defects.
The Microphotographs can be taken for any of the above features, if desired on
Metallurgical Microscope.
observation and recommendation)
In many spots no microstructural deformation observed
Some spots having precipitates
these spots need inspection after 20,000 hours of operation
detailed observation and recommendation refer page no. 7
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
EXAMINATION OF REPLICA
of replica carried out with the Metallurgical Microscope at 100 X &
photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
ation for the following.
Microstructure
Condition of Metals
Decarburization if any
Internal Granular Cracks if any
Any other Micro Defects.
The Microphotographs can be taken for any of the above features, if desired on
Metallurgical Microscope.
observation and recommendation)
In many spots no microstructural deformation observed
precipitates
these spots need inspection after 20,000 hours of operation
observation and recommendation refer page no. 7
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
EXAMINATION OF REPLICA
of replica carried out with the Metallurgical Microscope at 100 X &
photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
Internal Granular Cracks if any
The Microphotographs can be taken for any of the above features, if desired on
observation and recommendation) :
In many spots no microstructural deformation observed
precipitates along grain boundary.
these spots need inspection after 20,000 hours of operation
observation and recommendation refer page no. 7
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
of replica carried out with the Metallurgical Microscope at 100 X &
photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
The Microphotographs can be taken for any of the above features, if desired on
In many spots no microstructural deformation observed.
grain boundary.
these spots need inspection after 20,000 hours of operation
observation and recommendation refer page no. 7
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
of replica carried out with the Metallurgical Microscope at 100 X &
photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
The Microphotographs can be taken for any of the above features, if desired on
.
grain boundary. Creep damage
these spots need inspection after 20,000 hours of operations.
observation and recommendation refer page no. 7-27
REPORT No: MT / SBI /001
Metz Lab Private Limited
Page 6
600 048
www.metzlab.org
of replica carried out with the Metallurgical Microscope at 100 X &
photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
The Microphotographs can be taken for any of the above features, if desired on
Creep damage - class 2
REPORT No: MT / SBI /001
6 of 27
of replica carried out with the Metallurgical Microscope at 100 X &
photographs can be taken and also semi quantitative evaluations can
Examine the replicated Specimen in Metallurgical Microscope under 100 X & higher
The Microphotographs can be taken for any of the above features, if desired on
class 2. In
REPORT No: MT / SBI /001

7. Sport details
S.NO
1
2
3
4
S.NO
1
2
3
S.NO
1
2
3
4
5
6
7
8
9
10
11
12
13
First floor, Thangavel Nagar
Contact: +91
rt details:
DIRECTON
NORTH
NORTH
SOUTH
TOP
DIRECTION
NORTH
SOUTH
NORTH
TUBE NO
8
17
25
34
2
15
24
39
6
8
10
30
40
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
DIRECTON
NORTH
NORTH
SOUTH
TOP
DIRECTION
NORTH
SOUTH
NORTH
TUBE NO DIRECTION
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
LOCATION
BELOW TUBE NO 25
BELOW TUBE NO 10
BELOW TUBE NO 6
NEAR TUBE NO 22 TOP
SIDE
RAISER TUBE
FIT BOTTOM TO TOP
DIRECTION
NORTH
SOUTH
SOUTH
NORTH
NORTH
SOUTH
SOUTH
NORTH
NORTH
SOUTH
SOUTH
SOUTH
NORTH
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
HEADER
LOCATION
BELOW TUBE NO 25
BELOW TUBE NO 10
BELOW TUBE NO 6
NEAR TUBE NO 22 TOP
SIDE
RAISER TUBE
FIT BOTTOM TO TOP
7
7
1
TUBES
FIT BOTTOM TO
TOP
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
NEAR TUBE NO 22 TOP
ROW
FIT BOTTOM TO
TOP
10
14
15
11
9
9
10
10
7
1
7
7
9
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
ROW
A
B
C
C
ROW
A
B
C
ROW
A
A
A
A
B
B
B
B
C
C
C
C
C
REPORT No: MT / SBI /001
Metz Lab Private Limited
Page 7
600 048
www.metzlab.org
PAGE NO
8
9
10
11
PAGE NO
12
13
14
PAGE NO
15
16
17
18
19
20
21
22
23
24
25
26
27
REPORT No: MT / SBI /001
7 of 27
PAGE NO
PAGE NO
PAGE NO
15
16
17
18
19
20
21
22
23
24
25
26
27
REPORT No: MT / SBI /001

8. Microstructure
HEADER
First floor, Thangavel Nagar
Contact: +91
Microstructure:
HEADER –A ROW NEAR TUBE NO 25 NORTH
Metz Lab Private Limited
First floor, Thangavel Nagar
+91-8190810222 | Mail:
A ROW NEAR TUBE NO 25 NORTH
Metz Lab Private Limited
First floor, Thangavel Nagar, Walajabad Main Road,
8190810222 | Mail: - info@metzlab.org
A ROW NEAR TUBE NO 25 NORTH
Metz Lab Private Limited
Walajabad Main Road,
info@metzlab.org
A ROW NEAR TUBE NO 25 NORTH SIDE
Metz Lab Private Limited
Walajabad Main Road, Mannivakkam
info@metzlab.org | website:
100 X, Etched
400 X, Etched
Metz Lab Private Limited
Mannivakkam – 600 048
| website:- www.metzlab.org
REPORT No: MT / SBI /001
100 X, Etched
Observation:
Microstructure shows
*
*
* Precipitates observed
along grain boundry.
Creep damage
Recommendation:
Re
after 20 000 h
service
400 X, Etched
Metz Lab Private Limited
Page 8
600 048
www.metzlab.org
REPORT No: MT / SBI /001
Observation:
Microstructure shows
* Austenite matrix
* No Crack
* Precipitates observed
along grain boundry.
Creep damage
Recommendation:
Re-inspection
after 20 000 h
service
8 of 27
REPORT No: MT / SBI /001
Observation:
Microstructure shows
Austenite matrix.
* Precipitates observed
along grain boundry.
Creep damage - class 2
Recommendation:
inspection to be done
after 20 000 hours of