sec.623Criteria for approval

### sec.623 Criteria for approval The chief inspector may issue a gas quality approval only if satisfied— the quality of the gas is acceptable for supply to the relevant consumers; and either— the approval is necessary to ensure sufficiency of gas supply to the relevant consumers; or that stopping the supply to allow gas of the prescribed quality to be supplied is impractical or may cause a dangerous situation; or it is impractical to seek the written approval of the relevant consumers to be supplied with gas of that quality. - (a) the quality of the gas is acceptable for supply to the relevant consumers; and - (b) either— (i) the approval is necessary to ensure sufficiency of gas supply to the relevant consumers; or (ii) that stopping the supply to allow gas of the prescribed quality to be supplied is impractical or may cause a dangerous situation; or (iii) it is impractical to seek the written approval of the relevant consumers to be supplied with gas of that quality. - (i) the approval is necessary to ensure sufficiency of gas supply to the relevant consumers; or - (ii) that stopping the supply to allow gas of the prescribed quality to be supplied is impractical or may cause a dangerous situation; or - (iii) it is impractical to seek the written approval of the relevant consumers to be supplied with gas of that quality. - (i) the approval is necessary to ensure sufficiency of gas supply to the relevant consumers; or - (ii) that stopping the supply to allow gas of the prescribed quality to be supplied is impractical or may cause a dangerous situation; or - (iii) it is impractical to seek the written approval of the relevant consumers to be supplied with gas of that quality.