Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve TRUE - TRUE

Connector TRUE - TRUE

Open-ended Line TRUE - TRUE

Pressure Relief Valve - - - 

Meter - - - 

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE TRUE TRUE

Connector TRUE TRUE TRUE

Open-ended Line FALSE FALSE FALSE

Pressure Relief Valve - - - 

Meter TRUE - - 

All Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve TRUE TRUE TRUE

Connector FALSE TRUE FALSE

Open-ended Line FALSE FALSE FALSE

Pressure Relief Valve - - - 

Meter TRUE - - 

Non-Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve TRUE TRUE TRUE

Connector TRUE TRUE TRUE

Open-ended Line TRUE TRUE TRUE

Pressure Relief Valve TRUE TRUE - 

Meter TRUE TRUE TRUE

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)
Transmission

t0  <  t

Valve FALSE

Connector FALSE

Open-ended Line TRUE

Pressure Relief Valve #DIV/0!

Meter TRUE

Transmission

t0  <  t

Valve FALSE

Connector FALSE

Open-ended Line FALSE

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line FALSE #DIV/0! FALSE

Pressure Relief Valve #DIV/0! #DIV/0! - 

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE #DIV/0! FALSE

Connector FALSE #DIV/0! FALSE

Open-ended Line TRUE #DIV/0! TRUE

Pressure Relief Valve #DIV/0! #DIV/0! - 

Meter #DIV/0! #DIV/0! #DIV/0!

t0  <  t

Centrifugal vs Reciprocating

t0  <  t

Centrifugal vs Reciprocating

Canadian v. Clearstone II After the De-methanizer (2006)

Canadian v. Clearstone I After the De-methanizer (2002)
Comparing Before to After De-methanizer (Clearstone I)

Centrifugal Reciprocating Non-compressor

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line #DIV/0! FALSE FALSE

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! FALSE

Comparing Before to After De-methanizer (Clearstone II)

Centrifugal Reciprocating Non-Compressor

Valve #DIV/0! TRUE TRUE

Connector #DIV/0! TRUE FALSE

Open-ended Line #DIV/0! TRUE TRUE

Pressure Relief Valve #DIV/0! #REF! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Centrifugal Compressors to Non-Compressors (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line FALSE #DIV/0! FALSE

Pressure Relief Valve #DIV/0! #DIV/0! - 

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line FALSE FALSE TRUE

Pressure Relief Valve #DIV/0! #DIV/0! - 

Meter FALSE #DIV/0! #DIV/0!

t0  <  t

t0  <  t

Reciprocating vs Non-Compressor

Before vs. After

Before vs. After

Centrifugal vs Non-Compressor

t0  <  t

t0  <  t
Comparing Centrifugal Compressors to Non-Compressors (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE #DIV/0! FALSE

Connector TRUE #DIV/0! TRUE

Open-ended Line TRUE #DIV/0! TRUE

Pressure Relief Valve #DIV/0! #DIV/0! - 

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE TRUE FALSE

Connector TRUE TRUE FALSE

Open-ended Line TRUE TRUE TRUE

Pressure Relief Valve #DIV/0! #DIV/0! - 

Meter TRUE #DIV/0! #DIV/0!

Non-Compressor - Before and After De-mathanizer (Clearstone I)

t0  <  t

Valve FALSE

Connector FALSE

Open-ended Line FALSE

Pressure Relief Valve #DIV/0!

Meter FALSE

Non-Compressor - Before and After De-mathanizer (Clearstone II)

t0  <  t

Valve TRUE

Connector TRUE

Open-ended Line TRUE

Pressure Relief Valve #REF!

Meter TRUE

Before vs After

Before vs After

t0  <  t

Reciprocating vs Non-Compressor

t0  <  t

Centrifugal vs Non-Compressor
Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 2.243 - 2.513 

Connector 2.979 - 3.142 

Open-ended Line 16.174 - 16.174 

Pressure Relief Valve - - -

Meter ---

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test 15.883 18.085 

Connector 8.316 4.309 9.095 

Open-ended Line did not pass t-test did not pass t-test did not pass t-test

Pressure Relief Valve - - -

Meter - - 36.224

All Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 17.433 15.526 17.940 

Connector did not pass t-test 5.375 did not pass t-test

Open-ended Line did not pass t-test did not pass t-test did not pass t-test

Pressure Relief Valve - - -

Meter - - 36.224

Non-Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 6.424 6.074 7.180 

Connector 5.709 5.931 4.993 

Open-ended Line 11.274 9.386 18.227 

Pressure Relief Valve 2.012 2.012 -

Meter 0.744 2.933 5.121 

Combined 

 EFs

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined 

 EFs

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined 

 EFs

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)

Combined 

 EFs

(scf/hr)

Clearstone I (2002) v. Clearstone II (2006)
Transmission

Combined 

 EFs

(scf/hr)

Valve did not pass t-test

Connector did not pass t-test

Open-ended Line 18.149 

Pressure Relief Valve #DIV/0!

Meter 2.450

Transmission

Combined 

 EFs

(scf/hr)

Valve did not pass t-test

Connector did not pass t-test

Open-ended Line did not pass t-test

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line did not pass t-test #DIV/0! did not pass t-test

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test #DIV/0! did not pass t-test

Connector did not pass t-test #DIV/0! did not pass t-test

Open-ended Line 6.565 #DIV/0! 7.004 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Combined 

 EFs

(scf/hr)

Centrifugal vs Reciprocating

Combined 

 EFs

(scf/hr)

Centrifugal vs Reciprocating

Canadian v. Clearstone II After the De-methanizer (2006)

Canadian v. Clearstone I After the De-methanizer (2002)
Comparing Before to After De-methanizer (Clearstone I)

Centrifugal Reciprocating Non-compressor

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line #DIV/0! did not pass t-test did not pass t-test

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! did not pass t-test

Comparing Before to After De-methanizer (Clearstone II)

Centrifugal Reciprocating Non-compressor

Valve #DIV/0! 18.988 6.349 

Connector #DIV/0! 7.923 did not pass t-test

Open-ended Line #DIV/0! 5.740 11.723 

Pressure Relief Valve #DIV/0! #REF! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Centrifugal Compressors to Non-Compressors (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line did not pass t-test #DIV/0! did not pass t-test

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line did not pass t-test did not pass t-test 14.318 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter did not pass t-test #DIV/0! #DIV/0!

Combined 

 EFs

(scf/hr)

Combined 

 EFs

(scf/hr)

Centrifugal vs Non-Compressor

Combined 

 EFs

(scf/hr)

Reciprocating vs Non-Compressor

Before vs. After

Before vs. After

Combined 

 EFs

(scf/hr)
Comparing Centrifugal Compressors to Non-Compressors (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test #DIV/0! did not pass t-test

Connector 5.810 #DIV/0! 4.214 

Open-ended Line 11.884 #DIV/0! 21.055 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test 9.319 did not pass t-test

Connector 7.006 5.971 did not pass t-test

Open-ended Line 10.084 8.593 12.700 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! 7.350

Non-Compressor - Before and After De-mathanizer (Clearstone I)

Combined 

 EFs

(scf/hr)

Valve did not pass t-test

Connector did not pass t-test

Open-ended Line did not pass t-test

Pressure Relief Valve #DIV/0!

Meter did not pass t-test

Non-Compressor - Before and After De-mathanizer (Clearstone II)

Combined 

 EFs

(scf/hr)

Valve 2.141 

Connector 0.999 

Open-ended Line 4.667 

Pressure Relief Valve #REF!

Meter 2.036

Before vs After

Before vs After

Combined 

 EFs

(scf/hr)

Centrifugal vs Non-Compressor

Combined 

 EFs

(scf/hr)

Reciprocating vs Non-Compressor
Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 123 - 105 

Connector 75 - 60 

Open-ended Line 7 - 7 

Pressure Relief Valve - - -

Meter ---

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test 231 844 

Connector 928 151 777 

Open-ended Line did not pass t-test did not pass t-test did not pass t-test

Pressure Relief Valve - - -

Meter - - 4

All Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1,198 249 949 

Connector did not pass t-test 166 did not pass t-test

Open-ended Line did not pass t-test did not pass t-test did not pass t-test

Pressure Relief Valve - - -

Meter - - 4

Non-Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1,364 932 432 

Connector 1,004 766 238 

Open-ended Line 192 151 41 

Pressure Relief Valve 9 9 -

Meter 9 18 9 

Combined Counts

Clearstone I (2002) v. Clearstone II (2006)

Combined Counts

Clearstone I (2002) v. Clearstone II (2006)

Combined Counts

Clearstone I (2002) v. Clearstone II (2006)

Combined Counts

Clearstone I (2002) v. Clearstone II (2006)
Transmission

Combined Counts

Valve did not pass t-test

Connector did not pass t-test

Open-ended Line - 

Pressure Relief Valve #DIV/0!

Meter -

Transmission

Combined Counts

Valve did not pass t-test

Connector did not pass t-test

Open-ended Line did not pass t-test

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line did not pass t-test #DIV/0! did not pass t-test

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test #DIV/0! did not pass t-test

Connector did not pass t-test #DIV/0! did not pass t-test

Open-ended Line 43 #DIV/0! 33 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Canadian v. Clearstone I After the De-methanizer (2002)

Canadian v. Clearstone II After the De-methanizer (2006)

Combined Counts

Centrifugal vs Reciprocating

Combined Counts

Centrifugal vs Reciprocating
Comparing Before to After De-methanizer (Clearstone I)

Centrifugal Reciprocating Reciprocating

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line #DIV/0! did not pass t-test did not pass t-test

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! did not pass t-test

Comparing Before to After De-methanizer (Clearstone II)

Centrifugal Reciprocating Reciprocating

Valve #DIV/0! 751 710 

Connector #DIV/0! 651 did not pass t-test

Open-ended Line #DIV/0! 40 106 

Pressure Relief Valve #DIV/0! #REF! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Centrifugal Compressors to Non-Compressors (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line did not pass t-test #DIV/0! did not pass t-test

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone I)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test did not pass t-test did not pass t-test

Connector did not pass t-test did not pass t-test did not pass t-test

Open-ended Line did not pass t-test did not pass t-test - 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter did not pass t-test #DIV/0! #DIV/0!

Combined Counts

Combined Counts

Combined Counts

Centrifugal vs Non-Compressor

Combined Counts

Reciprocating vs Non-Compressor

Before vs. After

Before vs. After
Comparing Centrifugal Compressors to Non-Compressors (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test #DIV/0! did not pass t-test

Connector 591 #DIV/0! 158 

Open-ended Line 109 #DIV/0! 26 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone II)

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve did not pass t-test 665 did not pass t-test

Connector 1,211 526 did not pass t-test

Open-ended Line 146 93 53 

Pressure Relief Valve #DIV/0! #DIV/0! -

Meter #DIV/0! #DIV/0! 14

Non-Compressor - Before and After De-mathanizer (Clearstone I)

Combined Counts

Valve did not pass t-test

Connector did not pass t-test

Open-ended Line did not pass t-test

Pressure Relief Valve #DIV/0!

Meter did not pass t-test

Non-Compressor - Before and After De-mathanizer (Clearstone II)

Combined Counts

Valve 710 

Connector 560 

Open-ended Line 106 

Pressure Relief Valve #REF!

Meter 12

Before vs After

Before vs After

Combined Counts

Centrifugal vs Non-Compressor

Combined Counts

Reciprocating vs Non-Compressor
Clearstone I v. Clearstone II

H0: μ1 = μ2 The EFs are statistically similar if t0 < t; opportunity to combine

H1: μ1 ≠ μ2 The EFs are statistically disimilar if t0 > t; cannot combine

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 0.61 0.07 

Connector 0.73 0.57 

Open-ended Line 0.21 0.21 

Pressure Relief Valve

Meter

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

After

De-Methanizer 

Valve 2.03 1.42 1.75 

Connector 1.06 0.45 1.30 

Open-ended Line 7.48 8.47 4.03 

Pressure Relief Valve

Meter 0.00 

All Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 0.67 1.32 0.26 

Connector 3.53 1.80 3.69 

Open-ended Line 15.17 8.47 10.26 

Pressure Relief Valve

Meter 0.00 #DIV/0!

t0

Clearstone I (2002) v. Clearstone II (2006)

t0

Clearstone I (2002) v. Clearstone II (2006)

t0

Clearstone I (2002) v. Clearstone II (2006)
Non-Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 0.17 0.05 0.34 

Connector 0.57 0.94 0.99 

Open-ended Line 0.28 0.28 0.62 

Pressure Relief Valve 1.19 1.19 

Meter 1.09 1.65 1.61 

Transmission

t0

Valve 2.96 

Connector 9.30 

Open-ended Line 0.89 

Pressure Relief Valve #DIV/0!

Meter 2.14 

Transmission

t0

Valve 2.20 

Connector 3.12 

Open-ended Line 2.09 

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

Comparing Centrifugal to Reciprocating (Clearstone I)

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 232.40 136.89 207.51 

Connector 127.87 36.19 119.36 

Open-ended Line 14.43 #DIV/0! 2.45 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Canadian v. 

Clearstone I After the De-methanizer (2002)

Canadian v. 

Clearstone II After the De-methanizer (2006)

t0

Clearstone I (2002) v. Clearstone II (2006)

t0

Centrifugal vs Reciprocating
Comparing Centrifugal to Reciprocating (Clearstone II)

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 6.99 #DIV/0! 7.94 

Connector 2.75 #DIV/0! 2.90 

Open-ended Line 0.98 #DIV/0! 0.96 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Before to After De-methanizer (Clearstone I)

Centrifugal Reciprocating Non-compressor

Valve 94.53 91.86 25.97 

Connector 15.20 64.62 8.05 

Open-ended Line #DIV/0! 35.45 22.86 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! 99.88 

Comparing Before to After De-methanizer (Clearstone II)

Centrifugal Reciprocating Non-compressor

Valve #DIV/0! 0.41 0.11 

Connector #DIV/0! 1.17 2.05 

Open-ended Line #DIV/0! 1.01 0.26 

Pressure Relief Valve #DIV/0! #REF! #DIV/0!

Meter #DIV/0! 1.52 #DIV/0!

Comparing Centrifugal Compressors to Non-Compressors (Clearstone I)

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 171.06 215.82 94.10 

Connector 108.58 98.96 65.11 

Open-ended Line 24.94 #DIV/0! 4.85 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

t0

t0

t0

Centrifugal vs Reciprocating

Before vs. After

Before vs. After

t0

Centrifugal vs Non-Compressor
Comparing Reciprocating Compressors to Non-Compressors (Clearstone I)

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 141.01 36.69 105.15 

Connector 74.07 8.02 69.11 

Open-ended Line 42.99 61.15 1.72 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter 37.56 #DIV/0! #DIV/0!

Comparing Centrifugal Compressors to Non-Compressors (Clearstone II)

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 3.35 #DIV/0! 2.48 

Connector 1.78 #DIV/0! 0.58 

Open-ended Line 0.47 #DIV/0! 0.23 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Comparing Reciprocating Compressors to Non-Compressors (Clearstone II)

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 5.21 1.69 4.78 

Connector 1.29 1.16 2.19 

Open-ended Line 1.53 1.00 1.28 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter 0.93 #DIV/0! #DIV/0!

Non-Compressor - Before and After De-mathanizer (Clearstone I)

t0

Valve 25.97 

Connector 8.05 

Open-ended Line 22.86 

Pressure Relief Valve #DIV/0!

Meter 99.88 

Before vs After

t0

Reciprocating vs Non-Compressor

t0

Centrifugal vs Non-Compressor

t0

Reciprocating vs Non-Compressor
Non-Compressor - Before and After De-mathanizer (Clearstone II)

t0

Valve 0.41 

Connector 1.17 

Open-ended Line 1.01 

Pressure Relief Valve #REF!

Meter 1.52 

Before vs After
S = Std Dev

n = Comp Count Confidence Interval

95%

α

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 52 52 

Connector 30 30 

Open-ended Line 2 2 

Pressure Relief Valve

Meter

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 751 174 576 

Connector 652 92 559 

Open-ended Line 40 9 30 

Pressure Relief Valve

Meter 1 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 804 174 629 

Connector 683 92 590 

Open-ended Line 43 9 32 

Pressure Relief Valve

Meter 1 

DoF

Clearstone I (2002) v. Clearstone II (2006)

DoF

Clearstone I (2002) v. Clearstone II (2006)

DoF

Clearstone I (2002) v. Clearstone II (2006)

( ) ( )

n

S n

n

S n

n

S

n

S

Dof

− + −

⎟

⎟

⎠

⎞

⎜

⎜

⎝

⎛ +

=

1 2 1

2

2

2

2

1

2

1

2

1

2

2

2

2

1

2

1
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 710 489 219 

Connector 559 432 126 

Open-ended Line 105 82 22 

Pressure Relief Valve 1 1 

Meter 11 5 5 

DoF

Valve 234 

Connector 862 

Open-ended Line 71 

Pressure Relief Valve #DIV/0!

Meter 12 

DoF

Valve 517 

Connector 1,268 

Open-ended Line 83 

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 360 58 302 

Connector 318 67 243 

Open-ended Line 11 #DIV/0! 17 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Canadian v. 

Clearstone I After the De-methanizer (2002)

Canadian v. 

Clearstone II After the De-methanizer (2006)

DoF

Clearstone I (2002) v. Clearstone II (2006)

DoF

Clearstone I (2002) v. Clearstone II (2006)
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 793 #DIV/0! 619 

Connector 152 #DIV/0! 195 

Open-ended Line 2 #DIV/0! 2 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Centrifugal Reciprocating Non-compressor

Valve 68 212 306 

Connector 40 161 191 

Open-ended Line #DIV/0! 35 29 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! 2 

Centrifugal Reciprocating Non-compressor

Valve #DIV/0! 201 418 

Connector #DIV/0! 239 338 

Open-ended Line #DIV/0! 23 25 

Pressure Relief Valve #DIV/0! #DIV/0! #REF!

Meter #DIV/0! #DIV/0! 6 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 546 350 251 

Connector 162 50 127 

Open-ended Line 5 #DIV/0! 10 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

DoF

DoF

DoF

Clearstone I (2002) v. Clearstone II (2006)

Before vs. After

Before vs. After

DoF

Centrifugal vs Non-Compressor
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 448 76 474 

Connector 355 70 322 

Open-ended Line 69 19 47 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter 1 #DIV/0! 1 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 297 #DIV/0! 269 

Connector 88 #DIV/0! 119 

Open-ended Line 2 #DIV/0! 7 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 984 182 733 

Connector 1,155 180 465 

Open-ended Line 139 46 23 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter 1 #DIV/0! #DIV/0!

DoF

Valve 306 

Connector 191 

Open-ended Line 29 

Pressure Relief Valve #DIV/0!

Meter 2 

Before vs After

DoF

Reciprocating vs Non-Compressor

DoF

Centrifugal vs Non-Compressor

DoF

Reciprocating vs Non-Compressor
DoF

Valve 418 

Connector 338 

Open-ended Line 25 

Pressure Relief Valve #REF!

Meter 6 

Before vs After
tValue Table Reference

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 1.960 1.960 

Connector 2.042 2.042 

Open-ended Line 4.303 4.303 

Pressure Relief Valve

Meter

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 1.960 2.262 2.042 

Pressure Relief Valve

Meter 12.706 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 1.960 2.262 1.960 

Pressure Relief Valve #N/A

Meter 12.706 #N/A

6

t

Clearstone I (2002) v. Clearstone II (2006)

t

Clearstone I (2002) v. Clearstone II (2006)

t

Clearstone I (2002) v. Clearstone II (2006)

where M Mean S Std Deviation and n count of data

n

S

n

S

M M

t o i = i = i =

+

− = , ; . ;

2

2

2

1

2

1

1 2
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 1.960 1.960 2.074 

Pressure Relief Valve 12.706 12.706 #N/A

Meter 2.201 2.571 2.571 

t

Valve 1.96 

Connector 1.96 

Open-ended Line 1.96 

Pressure Relief Valve #DIV/0!

Meter 2.18 

t

Valve 1.96 

Connector 1.96 

Open-ended Line 1.96 

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 2.201 #DIV/0! 2.110 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Canadian v. 

Clearstone I After the De-methanizer (2002)

t

Clearstone I (2002) v. Clearstone II (2006)

Canadian v. 

Clearstone II After the De-methanizer (2006)

t

Clearstone I (2002) v. Clearstone II (2006)
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 #DIV/0! 1.960 

Connector 1.960 #DIV/0! 1.960 

Open-ended Line 4.303 #DIV/0! 4.303 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Centrifugal Reciprocating Non-compressor

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line #DIV/0! 1.960 2.045 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! 4.303 

Centrifugal Reciprocating Non-compressor

Valve #DIV/0! 1.960 1.960 

Connector #DIV/0! 1.960 1.960 

Open-ended Line #DIV/0! 2.069 2.060 

Pressure Relief Valve #DIV/0! #DIV/0! #REF!

Meter #DIV/0! #DIV/0! 2.447 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 2.571 #DIV/0! 2.228 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

t

t

t

Clearstone I (2002) v. Clearstone II (2006)

Before vs. After

Before vs. After

t

Centrifugal vs Non-Compressor
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 1.960 2.093 1.960 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter 12.706 #DIV/0! 12.706 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 #DIV/0! 1.960 

Connector 1.960 #DIV/0! 1.960 

Open-ended Line 4.303 #DIV/0! 2.365 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 1.960 1.960 1.960 

Connector 1.960 1.960 1.960 

Open-ended Line 1.960 1.960 2.069 

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter 12.706 #DIV/0! #DIV/0!

t

Valve 1.960 

Connector 1.960 

Open-ended Line 2.045 

Pressure Relief Valve #DIV/0!

Meter 4.303 

Before vs After

t

Reciprocating vs Non-Compressor

t

Centrifugal vs Non-Compressor

t

Reciprocating vs Non-Compressor
t

Valve 1.960 

Connector 1.960 

Open-ended Line 2.060 

Pressure Relief Valve #REF!

Meter 2.447 

Before vs After
All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve TRUE TRUE

Connector TRUE TRUE

Open-ended Line TRUE TRUE

Pressure Relief Valve

Meter

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE TRUE TRUE

Connector TRUE TRUE TRUE

Open-ended Line FALSE FALSE FALSE

Pressure Relief Valve

Meter TRUE

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve TRUE TRUE TRUE

Connector FALSE TRUE FALSE

Open-ended Line FALSE FALSE FALSE

Pressure Relief Valve

Meter TRUE

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

d Deviation and n count of data pts . ; i =
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve TRUE TRUE TRUE

Connector TRUE TRUE TRUE

Open-ended Line TRUE TRUE TRUE

Pressure Relief Valve TRUE TRUE

Meter TRUE TRUE TRUE

t0 < t

Valve FALSE

Connector FALSE

Open-ended Line TRUE

Pressure Relief Valve #DIV/0!

Meter TRUE

t0 < t

Valve FALSE

Connector FALSE

Open-ended Line FALSE

Pressure Relief Valve #DIV/0!

Meter #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line FALSE #DIV/0! FALSE

Pressure Relief Valve #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Canadian v. 

Clearstone I After the De-methanizer (2002)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

Canadian v. 

Clearstone II After the De-methanizer (2006)

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE #DIV/0! FALSE

Connector FALSE #DIV/0! FALSE

Open-ended Line TRUE #DIV/0! TRUE

Pressure Relief Valve #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

Centrifugal Reciprocating Non-compressor

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line #DIV/0! FALSE FALSE

Pressure Relief Valve #DIV/0! #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! FALSE

Centrifugal Reciprocating Non-compressor

Valve #DIV/0! TRUE TRUE

Connector #DIV/0! TRUE FALSE

Open-ended Line #DIV/0! TRUE TRUE

Pressure Relief Valve #DIV/0! #REF! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line FALSE #DIV/0! FALSE

Pressure Relief Valve #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

t0  <  t

t0  <  t

t0  <  t

Clearstone I (2002) v. Clearstone II (2006)

Before vs. After

Centrifugal vs Non-Compressor

Before vs. After

t0  <  t
 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE FALSE FALSE

Connector FALSE FALSE FALSE

Open-ended Line FALSE FALSE TRUE

Pressure Relief Valve #DIV/0! #DIV/0!

Meter FALSE #DIV/0! #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE #DIV/0! FALSE

Connector TRUE #DIV/0! TRUE

Open-ended Line TRUE #DIV/0! TRUE

Pressure Relief Valve #DIV/0! #DIV/0!

Meter #DIV/0! #DIV/0! #DIV/0!

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve FALSE TRUE FALSE

Connector TRUE TRUE FALSE

Open-ended Line TRUE TRUE TRUE

Pressure Relief Valve #DIV/0! #DIV/0!

Meter TRUE #DIV/0! #DIV/0!

t0  <  t

Valve FALSE

Connector FALSE

Open-ended Line FALSE

Pressure Relief Valve #DIV/0!

Meter FALSE

Before vs After

t0  <  t

Reciprocating vs Non-Compressor

t0  <  t

Centrifugal vs Non-Compressor

t0  <  t

Reciprocating vs Non-Compressor
t0  <  t

Valve TRUE

Connector TRUE

Open-ended Line TRUE

Pressure Relief Valve #REF!

Meter TRUE

Before vs After
Hydrocarbon Gas Emission Factors (scf/hr)

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 2.06 0.67 2.54 2.49 - 2.49 

Connector 2.66 2.33 2.83 3.44 - 3.44 

Open-ended Line 15.12 - 15.12 17.58 - 17.58 

Pressure Relief Valve - - - - - - 

Meter - - - - - - 

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

All 

Processing 

Before

De-Methanizer 

After

De-Methanizer 

Valve 14.42 8.21 15.72 18.99 18.34 19.19 

Connector 9.24 4.79 10.42 7.92 4.01 8.58 

Open-ended Line 18.37 25.89 14.48 5.74 5.12 5.95 

Pressure Relief Valve 30.46 - 30.46 - - - 

Meter 36.27 - 36.27 36.18 0.02 72.34 

All Compressors

Canada 1998/2007

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer Transmission

Valve 16.48 8.88 18.26 17.90 18.34 17.78 11.14 

Connector 11.90 7.11 13.25 7.72 4.01 8.31 2.87 

Open-ended Line 33.49 25.89 29.61 6.57 5.12 7.00 23.06 

Pressure Relief Valve 30.46 - 30.46 - - - 39.82 

Meter 36.27 - 36.27 36.18 0.02 72.34 14.13 

Non-Compressors

Canada 1998/2007

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer Distribution

Valve 6.50 6.05 7.46 6.35 6.10 6.91 0.35 

Connector 5.42 5.33 5.67 5.94 6.39 4.40 1.74 

Open-ended Line 10.72 9.84 14.03 11.72 9.01 21.51 2.69 

Pressure Relief Valve 2.23 2.23 - 1.24 1.24 - 0.05 

Meter 3.71 0.19 7.22 2.55 1.02 4.07 0.02 

Annomalies

- Clearstone II (After De-Methanizer) Open Ended Lines: centrifugal is greater than reciprocating because there are only three data points for centrifugal compressors.

- Clearstone II (Before De-Methanizer) Connectors: non-compressor is greater than compressor emissions because molecular sieve, NRU, and Amine building emissions are large. 

- Clearstone II (Before De-Methanizer) Meters: non-compressor is greater than compressor emissions because there is only one compressor data point and four non-compressor data points.

- Clearstone II (After De-Methanizer) Open Ended Lines: non-compressor is greater than compressor emissions because there are some large emissions from generators and flare vents.

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)
Hydrocarbon Gas Emission Factor Component Counts (scf/hr)

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 70.00 18.00 52.00 53.00 - 53.00 

Connector 44.00 15.00 29.00 31.00 - 31.00 

Open-ended Line 4.00 - 4.00 3.00 - 3.00 

Pressure Relief Valve - - - - - - 

Meter - - - - - - 

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

Valve 324.00 56.00 268.00 751.00 175.00 576.00 

Connector 277.00 58.00 219.00 651.00 93.00 558.00 

Open-ended Line 47.00 16.00 31.00 40.00 10.00 30.00 

Pressure Relief Valve 1.00 - 1.00 - - - 

Meter 2.00 - 2.00 2.00 1.00 1.00 

All Compressors

Canada 1998/2007

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer Transmission

Valve 394.00 74.00 320.00 804.00 175.00 629.00 235.00 

Connector 321.00 73.00 248.00 682.00 93.00 589.00 859.00 

Open-ended Line 51.00 16.00 35.00 43.00 10.00 33.00 72.00 

Pressure Relief Valve 1.00 - 1.00 - - - 59.00 

Meter 2.00 - 2.00 2.00 1.00 1.00 13.00 

Non-Compressors

Canada 1998/2007

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer Distribution

Valve 654.00 442.00 212.00 710.00 490.00 220.00 27.00 

Connector 444.00 333.00 111.00 560.00 433.00 127.00 40.00 

Open-ended Line 86.00 68.00 18.00 106.00 83.00 23.00 5.00 

Pressure Relief Valve 7.00 7.00 - 2.00 2.00 - 8.00 

Meter 6.00 3.00 3.00 12.00 6.00 6.00 4.00 

Annomalies

- Clearstone II (After De-Methanizer) Open Ended Lines: centrifugal is greater than reciprocating because there are only three data points for centrifugal compressors.

- Clearstone II (Before De-Methanizer) Connectors: non-compressor is greater than compressor emissions because molecular sieve, NRU, and Amine building emissions are large. 

- Clearstone II (Before De-Methanizer) Meters: non-compressor is greater than compressor emissions because there is only one compressor data point and four non-compressor data points.

- Clearstone II (After De-Methanizer) Open Ended Lines: non-compressor is greater than compressor emissions because there are some large emissions from generators and flare vents.

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)
Hydrocarbon Gas Emission Factor Standard Deviations (scf/hr)

Centrifugal Compressors

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer

Valve 0.11 0.04 0.13 5.19 - 5.19 

Connector 0.12 0.08 0.13 5.94 - 5.94 

Open-ended Line 0.32 - 0.32 20.63 - 20.63 

Pressure Relief Valve - - - - - - 

Meter - - - - - - 

Red highlights indicate sample sizes of 5 or less

Reciprocating Compressors

 All 

Processing 

 Before

De-Methanizer 

 After

De-Methanizer 

All 

Processing 

Before

De-Methanizer 

After

De-Methanizer 

Valve 0.93 0.41 1.00 61.69 94.59 47.50 

Connector 0.80 0.49 0.87 31.53 16.61 33.34 

Open-ended Line 1.09 0.99 1.15 10.63 7.72 11.55 

Pressure Relief Valve #DIV/0! - #DIV/0! - - - 

Meter 1.22 - 1.22 51.14 #DIV/0! #DIV/0!

** #DIV/0! means the sample is only one data point

Red highlights indicate sample sizes of 5 or less

All Compressors

Canada 1998/2007

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer Transmission

Valve 0.85 0.36 0.92 59.78 94.59 45.71 36.84 

Connector 0.75 0.44 0.82 30.85 16.61 32.50 32.68 

Open-ended Line 1.05 0.99 1.09 11.60 7.72 12.61 62.37 

Pressure Relief Valve #DIV/0! - #DIV/0! - - - 184.86 

Meter 1.22 - 1.22 51.14 #DIV/0! #DIV/0! 37.22 

** #DIV/0! means the sample is only one data point

Red highlights indicate sample sizes of 5 or less

Non-Compressors

Canada 1998/2007

All 

Processing

Before

De-Methanizer

After

De-Methanizer

All 

Processing

Before

De-Methanizer

After

De-Methanizer Distribution

Valve 0.57 0.49 0.72 24.06 24.01 24.23 1.08 

Connector 0.38 0.38 0.38 21.70 23.40 14.40 8.62 

Open-ended Line 0.73 0.74 0.68 36.24 27.52 57.61 36.49 

Pressure Relief Valve 0.06 0.06 - 1.19 1.19 #REF! 0.24 

Meter 0.12 0.01 0.12 3.69 1.23 4.77 0.19 

** #DIV/0! means the sample is only one data point

Red highlights indicate sample sizes of 5 or less

Annomalies

- Clearstone II (After De-Methanizer) Open Ended Lines: centrifugal is greater than reciprocating because there are only three data points for centrifugal compressors.

- Clearstone II (Before De-Methanizer) Connectors: non-compressor is greater than compressor emissions because molecular sieve, NRU, and Amine building emissions are large. 

- Clearstone II (Before De-Methanizer) Meters: non-compressor is greater than compressor emissions because there is only one compressor data point and four non-compressor data points.

- Clearstone II (After De-Methanizer) Open Ended Lines: non-compressor is greater than compressor emissions because there are some large emissions from generators and flare vents.

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)

Condensed 

Categories

Clearstone I (2002) Clearstone II (2006)
Clearstone II (March 2006) Last Updated 12/17/2009

Processing CH4 Emissions Average (scf/hr) Before De-Methanizer

Standard Deviation Reciprocating Centrifugal Grand Total

Component Compressors Compressors

Compressor seal 128.5056561 128.5056561 0 128.5056561

Connector 16.61460498 16.61460498 23.40312031 22.35810556

Meter #DIV/0! #DIV/0! 1.226805059 1.182234353

OEL 7.716776856 7.716776856 27.51518425 26.11685459

PRV 0 0 1.186818032 1.186818032

Valve 94.59496416 94.59496416 24.0050253 52.89917035

Processing CH4 Emissions Average (scf/hr) After De-Methanizer

Standard Deviation Reciprocating Centrifugal Grand Total

Component Compressors Compressors

Compressor seal 455.2197995 455.2197995 455.2197995

Connector 33.34447591 5.935173516 32.50156587 14.39932322 30.12444711

Meter #DIV/0! #DIV/0! 4.77452706 26.16922595

OEL 11.54725862 20.62988777 12.60806119 57.61364173 38.36750082

PRV #REF! #REF!

Pump seal 30.79980269 30.79980269

Valve 47.50122852 5.188130142 45.71336827 24.23226426 41.49615986

Processing CH4 Emissions Average (scf/hr) All Processing

Standard Deviation Reciprocating Centrifugal Grand Total

Component Compressors Compressors

Compressor seal 378.5173887 378.5173887 378.5173887

Connector 31.53412453 5.935173516 30.84737919 21.69565038 27.11047453

Meter 51.14071944 51.14071944 3.685865821 19.02245155

OEL 10.63127731 20.62988777 11.59852801 36.24244223 31.2339628

PRV 1.186818032 1.186818032

Pump seal 30.79980269 30.79980269

Valve 61.6927389 5.188130142 59.7771902 24.06147989 46.91513642

Canadian Data (CEPEI Fugitive Emissions Data)

Distribution CH4 Emissions Average (scf/hr)

Source Std Dev

C 8.617980128

OEL 36.48545442

OTHER 0

PRV 0.23545014

REG 1.503051863

ALL Compressors

NonCompressor

NonALL Compressors Compressor

ALL Compressors

NonCompressor
V 1.075509511

CV 17.8424841

OM 0.192935207

CONT 41.09979551

Clearstone I (2002)

Processing CH4 Emissions Average (scf/hr) Before De-Methanizer

Std Dev Reciprocating Centrifugal ALL NonComponent Compressors Compressors Compressors Compressor

BD #DIV/0! - #DIV/0! #DIV/0!

CCV 0.89 - 0.89 - 

Connector 0.49 0.08 0.44 0.38 

CS 21.66 1.72 19.86 0.52 

Meter - - - 0.01 

OEL 0.99 - 0.99 0.74 

PRV - - - 0.06 

Pump Seal - - - #DIV/0!

Valve 0.41 0.04 0.36 0.49 

Processing CH4 Emissions Average (scf/hr) After De-Methanizer

Std Dev Reciprocating Centrifugal ALL NonComponent Compressors Compressors Compressors Compressor

BD #DIV/0! - #DIV/0! - 

CCV 2.97 - 2.97 - 

Connector 0.87 0.13 0.82 0.38 

CS 4.56 #DIV/0! 4.48 - 

Meter 1.22 - 1.22 0.12 

OEL 1.15 0.32 1.09 0.68 

PRV #DIV/0! - #DIV/0! - 

Valve 1.00 0.13 0.92 0.72 

Processing CH4 Emissions Average (scf/hr) ALL Processing

Std Dev Reciprocating Centrifugal ALL NonComponent Compressors Compressors Compressors Compressor

BD 2.44 - 2.44 #DIV/0!

CCV 1.53 - 1.53 - 

Connector 0.80 0.12 0.75 0.38 

CS 13.48 1.53 12.90 0.52 

Meter 1.22 - 1.22 0.12 

OEL 1.09 0.32 1.05 0.73 

PRV #DIV/0! - #DIV/0! 0.06 

Pump Seal - - - #DIV/0!

Valve 0.93 0.11 0.85 0.57 
Transmission CH4 Emissions Average (scf/hr)

Source Std Dev

BD 3395.003249

C 32.68162458

CONT 9.835410495

CSC 207.2181895

CSR 281.3262477
CV 8.130783326

OEL 62.37165202

OM 38.62892321

OTHER #DIV/0!

PRV 184.8626694

REG 44.77618234

V 36.83538889
CI (Alpha) 60% 75% 90% 95% 97.5% 99% 99.50% 99.95%

CI (Alpha/2) 20% 50% 80% 90% 95% 98% 99% 99.90%

df\p 0.4 0.25 0.1 0.05 0.025 0.01 0.005 0.0005

1 0.325 1.000 3.078 6.314 12.706 31.821 63.657 636.619

2 0.289 0.816 1.886 2.920 4.303 6.965 9.925 31.599

3 0.277 0.765 1.638 2.353 3.182 4.541 5.841 12.924

4 0.271 0.741 1.533 2.132 2.776 3.747 4.604 8.610

5 0.267 0.727 1.476 2.015 2.571 3.365 4.032 6.869

6 0.265 0.718 1.440 1.943 2.447 3.143 3.707 5.959

7 0.263 0.711 1.415 1.895 2.365 2.998 3.499 5.408

8 0.262 0.706 1.397 1.860 2.306 2.896 3.355 5.041

9 0.261 0.703 1.383 1.833 2.262 2.821 3.250 4.781

10 0.260 0.700 1.372 1.812 2.228 2.764 3.169 4.587

11 0.260 0.697 1.363 1.796 2.201 2.718 3.106 4.437

12 0.259 0.695 1.356 1.782 2.179 2.681 3.055 4.318

13 0.259 0.694 1.350 1.771 2.160 2.650 3.012 4.221

14 0.258 0.692 1.345 1.761 2.145 2.624 2.977 4.141

15 0.258 0.691 1.341 1.753 2.131 2.602 2.947 4.073

16 0.258 0.690 1.337 1.746 2.120 2.583 2.921 4.015

17 0.257 0.689 1.333 1.740 2.110 2.567 2.898 3.965

18 0.257 0.688 1.330 1.734 2.101 2.552 2.878 3.922

19 0.257 0.688 1.328 1.729 2.093 2.539 2.861 3.883

20 0.257 0.687 1.325 1.725 2.086 2.528 2.845 3.850

21 0.257 0.686 1.323 1.721 2.080 2.518 2.831 3.819

22 0.256 0.686 1.321 1.717 2.074 2.508 2.819 3.792

23 0.256 0.685 1.319 1.714 2.069 2.500 2.807 3.768

24 0.256 0.685 1.318 1.711 2.064 2.492 2.797 3.745

25 0.256 0.684 1.316 1.708 2.060 2.485 2.787 3.725

26 0.256 0.684 1.315 1.706 2.056 2.479 2.779 3.707

27 0.256 0.684 1.314 1.703 2.052 2.473 2.771 3.690

28 0.256 0.683 1.313 1.701 2.048 2.467 2.763 3.674

29 0.256 0.683 1.311 1.699 2.045 2.462 2.756 3.659

30 0.256 0.683 1.310 1.697 2.042 2.457 2.750 3.646

inf 0.253 0.674 1.282 1.645 1.960 2.326 2.576 3.291