Common use of CONTAMINATION SAMPLING Clause in Contracts

CONTAMINATION SAMPLING. According to the results of visual inspections, the CONCESSIONAIRE shall prepare a contamination level verification program by taking samples in all the sections classified as of Medium or High level, or in the sections in which the visual inspection is not determinant. The sampling tasks shall be carried out when the lines are de-energized; therefore, the CONCESSIONAIRE shall coordinate with the COES the line decommissioning program, preferably to match the schedule maintenance shutdown periods. The sampling procedure shall be as follows: a) The sampling is carried out when the transmission line is out of order, with presence of sunlight, absence of rain, low humidity and no strong winds. b) Samples are taken in sections from 60 to 100 m of the conductor, in one of the three phases of the section selected. c) With the conductor cleaning equipment, the contamination present in the conductor’s surface is collected. d) The contamination collected is weighed in a precision scale in milligrams. e) The contamination level (NC) is determined in mg/cm², applying the following formula: The conductor surface is 2π r L, f) In the case of insulators, the sample shall be taken from one of the bells or fins, which at simple sight shows the greatest contamination. The contamination level (NC) is determined in mg/cm², applying the following formula: g) The contamination level value is compared to the values of Table No. 2 and the contamination level in the conductors is determined. h) The steps indicated in Items c) through g) are repeated for the other sections that have to be sampled. The sampling reports shall be submitted to the OSINERGMIN. Upon OSINERGMIN’s request, and in accordance with the CONCESSIONAIRE, the values of the Contamination Levels set out in Tables No. 1 and No. 2 may be reviewed.

CONTAMINATION SAMPLING. According to the results of visual inspections, the CONCESSIONAIRE Concession Holder shall prepare a contamination level verification program by taking samples simples in all the sections classified as of Medium or High level, or in the sections in which the visual inspection is not determinant. The sampling tasks shall be carried out when the lines are de-energized; therefore, the CONCESSIONAIRE Concession Holder shall coordinate with the COES the line decommissioning program, preferably to match the schedule maintenance shutdown periods. The sampling procedure shall be as follows: a) The sampling is carried out when the transmission line is out of order, with presence of sunlight, absence of rain, low humidity and no strong winds. b) Samples The samples are taken in sections from of 60 to 100 m of the conductor, in one of the three phases of the section selected. c) With the conductor cleaning equipment, the contamination present in the conductor’s surface is collected. d) The contamination collected is weighed in a precision scale in milligrams. e) The contamination level is determined (NC) is determined in mg/cm², applying the following formula: The conductor surface is 2π 2 r L, f) In the case of insulatorsinsulator chains, the sample shall be taken from one of the bells or finsbells, which at simple sight shows the greatest contamination. The contamination level (NC) is determined in mg/cm², applying the following formula: g) The contamination level value is compared to the values of Table No. 2 and the contamination level in the conductors is determined. h) The steps indicated in Items subparagraphs c) through g) are repeated for the other line sections that have to be sampled. The sampling reports shall be submitted to the OSINERGMIN. Upon OSINERGMIN’s request, and in accordance with the CONCESSIONAIREConcession Holder, the values of the Contamination Levels set out in Tables No. 1 and No. 2 may be reviewed.

CONTAMINATION SAMPLING. According to the results of visual inspections, the CONCESSIONAIRE Concession Holder shall prepare a contamination level verification program by taking samples simples in all the sections classified as of Medium or High level, or in the sections in which the visual inspection is not determinant. The sampling tasks shall be carried out when the lines are de-energized; therefore, the CONCESSIONAIRE Concession Holder shall coordinate with the COES the line decommissioning program, preferably to match the schedule maintenance shutdown periods. The sampling procedure shall be as follows: a) The sampling is carried out when the transmission line is out of order, with presence of sunlight, absence of rain, low humidity and no strong winds. b) Samples The samples are taken in sections from of 60 to 100 m of the conductor, in one of the three phases of the section selected. c) With the conductor cleaning equipment, the contamination present in the conductor’s surface is collected. d) The contamination collected is weighed in a precision scale in milligrams. e) The contamination level is determined (NC) is determined in mg/cm², applying the following formula: The conductor surface is 2π r L, f) In the case of insulatorsinsulator chains, the sample shall be taken from one of the bells or finsbells, which at simple sight shows the greatest contamination. The contamination level (NC) is determined in mg/cm², applying the following formula: g) The contamination level value is compared to the values of Table No. 2 and the contamination level in the conductors is determined. h) The steps indicated in Items subparagraphs c) through g) are repeated for the other line sections that have to be sampled. The sampling reports shall be submitted to the OSINERGMIN. Upon OSINERGMIN’s request, and in accordance with the CONCESSIONAIREConcession Holder, the values of the Contamination Levels set out in Tables No. 1 and No. 2 may be reviewed.

CONTAMINATION SAMPLING. According to the results of visual inspections, the CONCESSIONAIRE Concession Holder shall prepare a contamination level verification program by taking samples simples in all the sections classified as of Medium or High level, or in the sections in which the visual inspection is not determinant. The sampling tasks shall be carried out when the lines are de-energized; therefore, the CONCESSIONAIRE Concession Holder shall coordinate with the COES the line decommissioning program, preferably to match the schedule maintenance shutdown periods. The sampling procedure shall be as follows: a) The sampling is carried out when the transmission line is out of order, with presence of sunlight, absence of rain, low humidity and no strong winds. b) Samples The samples are taken in sections from of 60 to 100 m of the conductor, in one of the three phases of the section selected. c) With the conductor cleaning equipment, the contamination present in the conductor’s surface is collected. d) The contamination collected is weighed in a precision scale in milligrams. e) The contamination level is determined (NC) is determined in mg/cm², applying the following formula: The conductor surface is 2π 2 r L, f) In the case of insulatorsinsulator chains, the sample shall be taken from one of the bells or finsbells, which at simple sight shows the greatest contamination. The contamination level (NC) is determined in mg/cm², applying the following formula: g) NC = contamination weight [mg] / outer xxxx surface [cm²] h) The contamination level value is compared to the values of Table No. 2 and the contamination level in the conductors is determined. hi) The steps indicated in Items subparagraphs c) through g) are repeated for the other line sections that have to be sampled. The sampling reports shall be submitted to the OSINERGMIN. Upon OSINERGMIN’s request, and in accordance with the CONCESSIONAIREConcession Holder, the values of the Contamination Levels set out in Tables No. 1 and No. 2 may be reviewed.

CONTAMINATION SAMPLING. According to the results of visual inspections, the CONCESSIONAIRE Concession Holder shall prepare a contamination level verification program by taking samples simples in all the sections classified as of Medium or High level, or in the sections in which the visual inspection is not determinant. The sampling tasks shall be carried out when the lines are de-energized; therefore, the CONCESSIONAIRE Concession Holder shall coordinate with the COES the line decommissioning program, preferably to match the schedule maintenance shutdown periods. The sampling procedure shall be as follows: a) The sampling is carried out when the transmission line is out of order, with presence of sunlight, absence of rain, low humidity and no strong winds. b) Samples The samples are taken in sections from of 60 to 100 m of the conductor, in one of the three phases of the section selected. c) With the conductor cleaning equipment, the contamination present in the conductor’s surface is collected. d) The contamination collected is weighed in a precision scale in milligrams. e) The contamination level is determined (NC) is determined in mg/cm², applying the following formula: The conductor surface is 2π r L, f) In the case of insulatorsinsulator chains, the sample shall be taken from one of the bells or finsbells, which at simple sight shows the greatest contamination. The contamination level (NC) is determined in mg/cm², applying the following formula: g) NC = contamination weight [mg] / outer bell surface [cm²] h) The contamination level value is compared to the values of Table No. 2 and the contamination level in the conductors is determined. hi) The steps indicated in Items subparagraphs c) through g) are repeated for the other line sections that have to be sampled. The sampling reports shall be submitted to the OSINERGMIN. Upon OSINERGMIN’s request, and in accordance with the CONCESSIONAIREConcession Holder, the values of the Contamination Levels set out in Tables No. 1 and No. 2 may be reviewed.