CQI-9 Special Process: Heat Treat System Assessment, 2 Edition ...

CQI-9 Special Process: Heat Treat System Assessment, 2 nd Edition Errata Sheet
Page Item # Original Language (see BOLD) Corrected Version Language (see highlight)
17 3.5.5 • Section 3.5.5 – Initial TUS
– Minimum and maximum temperature
ranges shall be tested per AMS 2750D.
Exception: If the operating range of the
Qualified Work Zone is equal to or less
than 85 o C (153 o F) then only one
temperature is required to be tested. The
temperature shall be within the operating
range of the Qualified Work Zone.
17 3.5.6 • Section 3.5.6 – Periodic TUS (For CQI-9,
a minimum of once per year periodic TUS
is required)
- Minimum and maximum temperature
ranges shall be tested per AMS 2750D.
Exception: If the operating range of the
Qualified Work Zone is equal to or less than
85 o C (153 o F) then only one temperature is
required to be tested. The temperature
shall be within the operating range of the
Qualified Work Zone.
43 A1.9 All hardness test equipment (for each scale
used) shall be calibrated semi-annually
minimum, and verified daily minimum per
the applicable ASTM standard.
48 B1.7
54 C1.3
58 D1.2
All hardness test equipment (for each scale
used) shall be calibrated semi-annually
minimum, and verified daily minimum per
the applicable ASTM standard.
All hardness test equipment (for each scale
used) shall be calibrated semi-annually
minimum, and verified daily minimum per
the applicable ASTM standard.
All hardness test equipment (for each scale
used) shall be calibrated semi-annually
minimum, and verified daily minimum per
the applicable ASTM standard.
62 E1.8 All hardness test equipment (for each scale
used) shall be calibrated semi-annually
minimum, and verified daily minimum per
the applicable ASTM standard.
• Section 3.5.5 – Initial TUS
– Minimum and maximum temperature ranges
shall be tested per AMS 2750D. Exception: If the
operating range of the Qualified Work Zone is
equal to or less than 170 o C (306 o F) then only
one temperature is required to be tested. The
temperature shall be within the operating range
of the Qualified Work Zone.
• Section 3.5.6 – Periodic TUS (For CQI-9, a
minimum of once per year periodic TUS is
required)
65 E4.2 Every 2 hours minimum Every 4 hours minimum
– Minimum and maximum temperature ranges shall
be tested per AMS 2750D. Exception: If the
operating range of the Qualified Work Zone is equal
to or less than 170 o C (306 o F) then only one
temperature is required to be tested. The
temperature shall be within the operating range of
the Qualified Work Zone.
All hardness test equipment (for each scale used)
shall be calibrated annually minimum, and verified
daily minimum per the applicable ASTM standard.
All hardness test equipment (for each scale used)
shall be calibrated annually minimum, and verified
daily minimum per the applicable ASTM standard.
All hardness test equipment (for each scale used)
shall be calibrated annually minimum, and verified
daily minimum per the applicable ASTM standard.
All hardness test equipment (for each scale used)
shall be calibrated annually minimum, and verified
daily minimum per the applicable ASTM standard.
All hardness test equipment (for each scale used)
shall be calibrated annually minimum, and verified
daily minimum per the applicable ASTM standard.

General Notes for AMS 2750D
CLARIFICATION TO "GENERAL NOTES FOR AMS 2750D"
PAGES 16 & 17, CQI-09 2 nd Edition
AMS 2750D is referenced in the Pyrometry Section (Section 2.0) of the Process Tables. Heat treat suppliers
are not required to comply to all sections of AMS 2750D. Heat treat suppliers shall comply to the sections
of AMS 2750D that are given below. These sections reference thermocouples, the calibration of
thermocouples and instrumentation, and the procedure for conducting furnace temperature uniformity
surveys (TUS).
Thermocouples and Instrumentation
- Section 3.1 – Temperature Sensors (Thermocouples)
- Section 3.2 – Instrumentation - Note: Frequency reductions per AMS 2750D are not
allowed by CQI-9
Compliance to the following sections in 3.2, are not required by CQI-9
Section Number Explanation
3.2.5.1 & 2 Temperature controlling instruments purchased prior to 1 year after
the release of AMS 2750D are exempt of 3.2.5.1 and 3.2.5.2.
3.2.5.3.1 One point sensor input is acceptable.
3.2.5.5 Sensitivity checks during calibration are not required.

CLARIFICATION TO "GENERAL NOTES FOR AMS 2750D"
PAGES 16 & 17, CQI-09 2 nd Edition
System Accuracy Test (SAT) Procedure (Section 3.4)
NOTE: Refer to AMS 2750D as directed
- SAT shall be performed by one of the two methods listed below:
1) Probe Method: The temperature indication of the furnace control instrument connected to the
control sensor (CS) shall be within +/- 5C (or +/- 10F) of the corrected temperature
indication of the test sensor (TS) on a test instrument. This test shall be performed monthly
at a typical operating temperature utilizing the procedures detailed in AMS 2750D Section
3.4.4, System Accuracy Test Procedure.
SAT Frequency:
o Equipment operating at or above 760C (1400F) shall be checked monthly.
o Equipment operating below 760C (1400F) shall be checked quarterly.
Example of Probe Method
Lead Wire
Test Instrument
Chart Recorder
B
Note: The test sensor can be a
resident thermocouple, refer to
AMS 2750 D section 3.4.4.2.1
Control Instrument
EXAMPLE OF SYSTEM ACCURACY TEST (SAT)
CONTROL
INSTRUMENT
TEMPERATURE
INDICATION
(A)
900 o C
(1652 o F)
TEST
INSTRUMENT
TEMPERATURE
INDICATION
(B)
901.5 o C
(1655 o F)
A
TEST SENSOR
CORRECTION
FACTOR
(C)
-0.5 o C
(-1.0 o F)
1500
1501
Control Sensor
Over Temp Test Sensor
Protection Furnace Wall
TEST
INSTRUMENT
CORRECTION
FACTOR
(D)
+0.1 o C
(+0.2 o F)
Over-Temp Sensor
Furnace
Work Zone
Part or Raw
Material
TRUE TEST
TEMPERATURE
(E)=(B)+(C)+(D)
901.1 o C
(1654.2 o F)
SAT
DIFFERENCE
(A) – (E)
-1.1 o C
(-2.2 o F)

CLARIFICATION TO "GENERAL NOTES FOR AMS 2750D"
PAGES 16 & 17, CQI-09 2 nd Edition
2) Comparative Method: The relationship between the control system (sensor, leadwire, control
instrument) and any other permanently installed monitoring system such as over temperature
control system (sensor, leadwire, over temp instrument) or a load monitoring system (sensor,
leadwire, recording instrument) etc. at the time of the most recent conforming instrument
calibration test shall be established. This established relationship shall not differ by more
than +/-1C (or +/-2F) when checked weekly at a typical operating temperature.
Example of Comparative
Method
Chart Recorder
Control Instrument
1500
1501
Control Sensor
Over Temp
Protection Furnace Wall
Other permanently installed thermocouple
(If utilized)
Over-Temp Sensor
Furnace
Work Zone
Part or Raw
Material
Note: It is strongly recommended that
the comparative check be performed at or near the original temperature
temperature
- Any actions to correct a failing reading or validate a test result shall be documented.
- Control Sensors (CS) failing to meet the requirements of SAT method 1 shall be changed. A
new TUS is not required unless the position of the control sensor changes. If new
thermocouple(s) are required in Test method 2, a new relationship must be established.
- Thermocouple Replacement Schedule:
o Base metal sensors (e.g. Type K, N, J, E) thermocouples shall be changed when needed
or annually at a minimum for equipment operating at or above 760C (1400F).
o Base metal sensors (e.g. Type K, N, J, E) thermocouples shall be changed when needed
or every two years at a minimum for equipment operating below 760C (1400F).
o Noble metal sensors (e.g. Type R and S) thermocouples shall be changed when needed
or every two years at a minimum for equipment operating at or above 760C (1400F).
o Note: A new TUS is not required for any thermocouple replacement unless the position
of the control sensor(CS) is changed (CS)

CLARIFICATION TO "GENERAL NOTES FOR AMS 2750D"
PAGES 16 & 17, CQI-09 2 nd Edition
Furnace Temperature Uniformity Survey (TUS)
o Section 3.5.2 – Multiple Qualified Operating Temperature Ranges
o Section 3.5.3 – Furnace Modifications
o Section 3.5.4 – Furnace Repairs
o Section 3.5.5 – Initial TUS
� Minimum and maximum temperature ranges shall be tested per AMS 2750D.
Exception: If the operating range of the Qualified Work Zone is equal to or less
than 170 o C (306 o F) then only one temperature is required to be tested. The
temperature shall be within the operating range of the Qualified Work Zone.
o Section 3.5.6 – Periodic TUS (For CQI-9, a minimum of once per year periodic
TUS is required)
� Minimum and maximum temperature ranges shall be tested per AMS 2750D.
Exception: If the operating range of the Qualified Work Zone is equal to or less
than 170 o C (306 o F) then only one temperature is required to be tested. The
temperature shall be within the operating range of the Qualified Work Zone.
o Section 3.5.8 – Furnace Parameters During TUS
o Section 3.5.9 – Furnace Temperature at Insertion of TUS Sensors (Thermocouples)
o Section 3.5.10 – Load Condition
o Section 3.5.11 – Furnace Atmosphere During TUS
o Section 3.5.13 – Batch Furnaces, Salt Baths, Controlled Temperature Liquid Baths, and
Fluidized Bed Furnaces EXCEPT:
� 3.5.13.3.2: CQI-9 requires that data from the TUS sensors is automatically
recorded.
o Section 3.5.14 – Continuous and Semi-Continuous Furnaces
o Section 3.5.15 – Alternative Testing Methods for Continuous and Semi-Continuous
Furnaces or Furnaces with Retorts or Muffles
o Section 3.5.16 – Temperature Uniformity Survey Sensor Failures
o Section 3.5.18 – Relocation of Hot or Cold Recording Sensors for Class A or C
Instrumentation
o Section 3.5.20 – Temperature Uniformity Survey Instrumentation
o Section 3.5.21 – Temperature Uniformity Survey Report