Utah Admin. Code R307-306-6 - Performance Standards
(1) To satisfy the
requirements of
R307-306-4(2),
the abrasive blasting operation shall use at least one of the following
performance standards:
(a) confined blasting;
(b) wet abrasive blasting;
(c) hydroblasting; or
(d) unconfined blasting using abrasives as
defined in (2) below.
(2) Abrasives.
(a) Abrasives used for dry unconfined
blasting referenced in (1) above shall comply with the following performance
standards:
(i) Before blasting, the abrasive
shall not contain more than 1% by weight material passing a #70 U.S. Standard
sieve.
(ii) After blasting the
abrasive shall not contain more than 1.8% by weight material 5 microns or
smaller.
(b) Abrasives
reused for dry unconfined blasting are exempt from (a)(ii) above, but must
conform with (a)(i) above.
(3) Abrasive Certification. Sources using the
performance standard of (1)(d) above to meet the requirements of
R307-306-4(2)
must demonstrate they have obtained abrasives from a supplier who has certified
(submitted test results) to the director at least annually that such abrasives
meet the requirements of (2) above.
Notes
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