1) A Qualified Worker performs a Job Hazard Analysis for the specific work to be performed.
2) The Qualified Worker, maybe second hand through a clerk, writes up a draft SOP.
3) The QW and the safety rep review the draft and decide whether to approve it, signing it if they do.
4) The SOP is now available for other QWs to use to perform that specific task by
A) Printing out the SOP
B) Reviewing the contents of the SOP with their supervisor particularly over unique requirements to the job.
C) Getting their supervisor to add the QWs name and then having the supervisor sign it.
D) The QW may now post the SOP and perform the work.
Once the SOP is created and approved it must be periodically reviewed (Steps 1-3) to make sure it remains valid. In between reviews it may be used (Step 4 A-D) any number of times.
So YES, a JHA had to be performed prior to the CREATION of the SOP.
And NO, it is not required prior to USE of the SOP.