Hi, standards will refer to the pre sept 2008 national day care standards, they set the quality of provision for early years. The welfare requirements et al, superseeded or replaced the care standards and are what we know at the moment as part of the EYFS - early years foundation stage.
standards/welfare requirements - if you click the PDF icon in the centre/off right it'll produce a file you can save and read when needed.
Hth xx