Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) Digester Valves and Piping.
(1) The digester blow valve shall be arranged
so as to be operated from another room, remote from safety valves.
(2) Digester piping installed after May 30,
1999, shall conform with Sections 122-135 ASME B31.1-1995, Power Piping, which
is hereby incorporated by reference. Digester piping installed on or before May
30, 1999, shall conform with either Sections 122-135 ANSI B31.1-1997, or the
updated version of the ANSI/ASME B31.1 standard in effect at the time of
installation.
(3) Couplings and
flanges shall be secured by bolted studs.
(4) Digester blow valves or controls shall be
pinned or locked in closed position throughout the entire cooking
period.
(5) Heavy-duty pipe,
valves, and fitting shall be used between digester and blow-pit. The piping
system shall be inspected at least semiannually to determine the degree of
deterioration and, repaired or replaced when necessary.
(6) Test holes in blow lines of piping
systems shall not be covered with insulation or other
materials.
(b) Blowing
Digester.
(1) Audible warning signals and red
warning lights shall be installed in areas which may be hazardous to personnel
while digesters are being blown. Such devices shall be activated prior to
blowing a digester and the warning lights shall remain lighted as long as the
hazard exists.
(2) After the
digester has started to be blown, the blow-off valve shall be left open, and
the hand plate shall not be removed until the person responsible signals the
blow-pit person that the blow is completed.
(3) Whenever it becomes necessary to remove
the hand plate to clear stock, operators shall wear eye protection equipment
and protective clothing to guard against burns from hot
stock.
(c) Blow pits and
blow tanks.
(1) When located on top, openings
shall be provided with guardrails.
NOTE: Blow-pit openings should be on the side of the
pit.
(2) The blow-pit door
shall remain open when the access ladder is in place or when employees are in
the blow-pit.
(3) A signaling
device shall be installed in the digester, blow-pit rooms and chip bins to be
operated as a warning before and while digesters are being blown.
(4) Blow-pit hoops shall be maintained in a
safe condition.
NOTE: Sections (a), (b), and (c) pertain to batch
digesters.
(d)
Bleach Plant.
(1) An audible emergency alarm
system shall be installed and it shall be activated whenever a serious leak or
break develops in the bleach plant area.
(2) Chlorine gas shall be exhausted from the
bleach plant by an exhaust system meeting the requirements of Article
107.
(3) The gas shall be rendered
neutral or harmless before being discharged into the atmosphere.
(4) The requirements of ANSI Z9.2-1979 shall
apply.
(e) Pulping
Device.
(1) When beaters are fed from the
floor above, the chute opening, if less than 42 inches from the floor, shall be
provided with a standard railing or other enclosure. Openings for manual
feeding shall be sufficient only for entry of stock and shall be provided with
at least two permanently secured crossrails, in accordance with Section
3209.
(2) When beaters are fed manually from the
floor above, an emergency stop control within reach of the operator's normal
work station shall be provided at the top level.
(3) Where the opening is large enough to
admit a worker, any employee feeding the pulper shall be secured with a safety
belt with attached lifeline.
(4)
Guardrails 42 inches high shall be provided around beaters where tub tops are
less than 42 inches from the floor.
(f) Shredders, Cutters, Dusters, and Blowers.
(1) On manually fed shredders, cutters, and
dusters, the feed table shall be of such height and distance from the knives as
to prevent the operator from reaching or falling into the knives or the
operator shall be safeguarded by other acceptable means.
(2) Any manually fed cutter, shredder, or
duster shall be provided with a smooth-pivoted idler roll resting on the stock
or feed table in front of feed rolls except when arrangements prevent the
operator from standing closer than 36 inches to any part of the feed
rolls.
(3) Hoods of cutters,
shredders, and dusters shall be provided with exhaust ventilation in accordance
with Article 107.
(4) The blower
discharge outlets and work areas shall be arranged to prevent material from
falling onto workers.
1.
Repealer and new section filed 9-15-86; effective thirtieth day thereafter
(Register 86, No. 38).
2. New subsection (e)(4) and amendment of
subsections (f)-(f)(2) filed 12-7-92; operative 1-6-93 (Register 92, No.
50).
3. Amendment of subsection (a)(2) filed 4-30-99; operative
5-30-99 (Register 99, No. 18).
Note: Authority cited: Section
142.3, Labor
Code. Reference: Section
142.3, Labor
Code.