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I
<br />V. Miscellaneous ~'•~--~
<br />• A. Diesel Equipment ^,~
<br />1. Any diesel equipment used in or inby the last open :--~
<br />crosscut shall be approved under 30 CFR 36 and shall
<br />be maintained in the approval condition. '''t_
<br />2. All diesel equipment shall be operated and maintain- ;`;•`;
<br />ed in accordance with the manufacturer's operating ""•
<br />.~.....
<br />specifications and maintenance manual. " ±"'~•
<br />3. In order to improve the working environment of min-,-.;~:"~
<br />' ers where diesel units are operating in the working. ;;~r;'_
<br />section, the quantity of ventilating air maintained.~:_~;•'.i~:'
<br />in the last open crosscut shall be 100$ of the ap-:":.'i;ti
<br />proval plate quantity of the largest diesel unit,-:`~~
<br />plus 758 of the approval plate quantity of the next':;<~,'
<br />largest unit, plus 50$ of the approval plate quanti-~~;"~:'
<br />....:
<br />' ty of each additional diesel unit operating in that ":^.;;~.,
<br />split of air. Where diesel units, not approved ~~~';~'.;'
<br />under 30 CFR 3G and those approved under 3B CFR 36.;:;`••"•;
<br />..r Yy~.
<br />but used outby the working section, are operating, a',~.,:.~~;_
<br />' minimum quantity of air equal to 150 cfm per rated''.ri~r
<br />brake horsepower shall be maintained in the area of;,:•~:•+,~1;.
<br />the unit except during a mine evacuation due to a`;',s?T~~;
<br />' fan stoppage. Whenever more than one diesel unit is•;;~?~~
<br />operating on the same split of air in the same work''';~.;:}~,°;
<br />area, the above air quantity requirement shall be`.~':~~;:
<br />additive for each unit. '=-~'~`
<br />:; ~Jk
<br />;~ 9. All diesel equipment used for coal haulage, or any ~,li~i-
<br />.y.:
<br />other diesel equipment used in or inby the last open :;*:;~,
<br />crosscut on a regular basis, shall be examined. at,';~y°~q,{)
<br />least once every 29 hours to insure the equipment.is;~~~°~;
<br />in proper operating condition. Other diesel equip-~,y;'~".~~,.•
<br />ment, such as supply and manErip vettiicles~ shaY1~-be:%~~
<br />examined once ever seven ''~ta'
<br />y (7) days to insure•the.~-;~.~„
<br />equipment is in proper operating condition. Durinq';;:r::?;,
<br />these exams tl~e exhausts of each unit shall be test-:.~::'~.;';
<br />' ed to determine if the equipment is operating pro= ~~'='
<br />perly. Anytime a piece of equipment is seen to be :;~;j`i
<br />emitting large amounts of black smoke on a eontinu-;;:~~,
<br />' ous basis, it sha21 be removed from service and~the:;~~;~•
<br />condition corrected. •:•.i
<br />' A record of all diesel examinations shall be kept in ';=s+,
<br />a book for that purpose, which shall include the:.;.~=•;:•
<br />date, sampler's initials and the results of the..',?:~
<br />examination. The records shall be maintained for:;,;4`t~T
<br />~.
<br />reference purposes for at least one year. -";~•,-;
<br />~ B. Examination of Seals "~•'~'~"
<br />ar..'. .. :.,.
<br />{ Seals that are ventilated with intake air used to vents=:,,,S:~;j~;
<br />~ late active working areas shall be examined in actor-•~;.-'s;1~r'i,
<br />+ dance with 30 CFR 75.303. , ,;.t ryx=k~
<br />.:....
<br />C. Roof bolting .•~~
<br />1. Where roof bolting is being done, the minimum quart- •'
<br />tity of air to he maintained over the bolting mach'=..,':;'`.
<br />ine shall be 3,000 cfm. Line curtain shall be main=~;''•`~
<br />tained within five (5) feet of the operator, on ;the"~~-'`
<br />ventilation side of the entry. •;w,~~: )
<br />,~)
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