united states test procedures for high density discharge lamps id 341 the u.s. department of energy doe proposes to establish its test procedures for high-intensity discharge hid lamps under the energy policy and conservation act of 1975 epca as amended. the proposed test procedures are based on industry standard procedures and practices already established by the american national standards institute ansi the illuminating engineering society of north america ies and the international commission on illumination commission internationale de leclairage cie . the proposed test procedures would include measurement of parameters to enable calculation of lam efficacy in lumens per watt or lm w and would also provide for the efficiency measurement of directional lamps using center beam intensity in candelas and beam angle. the proposed procedures would also measure lumen maintenance i.e. the fraction or percentage of lam light output relative to initial output over time at 40 per cent and 70 per cent of rated lam lifetime. correlated color temperature cct and color rendering index cri would also be measured as potential means to delineate equipment classes for hid lamps. this notice of proposed rulemaking nopr also discusses does conclusion that hid lamps do not operate or use energy in standby mode or off mode. therefore doe does not propose test procedures for these modes. g tbt n usa 669 the u.s. department of energy doe is proposing to revise its test procedures for general service fluorescent lamps gsfls and general service incandescent lamps gsils established under the energy policy and conservation act epca . doe is not proposing changes to the existing test procedure for incandescent reflector lamps irls established under epca. for gsfls and gsils doe is proposing to update several citations and references to the industry standards currently referenced in does test procedures. doe is also proposing to establish a lam lifetime test procedure for gsils. additionally in this nopr doe is requesting comments on all aspects of the gsfl gsil and irl test procedures and whether any further amendments are necessary. does review of the gsfl gsil and irl test procedures fulfils the epca requirement that doe review test procedures for all covered products at least once every seven years. finally doe is proposing to extend the compliance certification date for gsils so as to be consistent with the compliance date of the amended test procedure. doe is also announcing a public meeting to discuss and receive comments on the issues presented in this rulemaking. g tbt n usa 649