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Table 3.d <br /> Specffic Maintenance Requirements for Uetentlon VaultslTanks <br /> Resultr.Ezpected W6en <br /> Meintenance Meintenanceis <br /> Componeut DeCect Co.�ditions When Mainteaunce ia Needed Per[ormed <br /> 9torage Plu�ed One-hal(of the c�ass uection of a vent ia blocked Venfe open and <br /> Arca Air VenLs nt any point or thr.vent is dnmaged. Cunctioning. <br /> Debris and Accumu�nted t;ed�ment depth exceeds 10°.L af the All eediment nnd debris <br /> Sediment diume4ar of the storagc nrea for 1l21ength of removed from stnrage <br /> BLOtU{�R�iIUIC OL!l[ly�MIIIL 1Il'�CI1 CxCCC�H ISX OI aren. <br /> dinmeter. <br /> ,, (Example:7'L-inch storago tnnk would requilc <br /> cleaning when eediment reaches depth of 7 inclieu <br /> Cur mocc thnn I/2length oCtunk.) <br /> ,Toint,v Any openingn or voide nllowing mnterinl to be All joint lietwcen <br /> [Sotw�n Lrncu�orted into facility. Wnhl�ipe secLione are <br /> Tnnk/F'ipe se°�e`L <br /> Section (K'ill mquire engincering analyeia Co dutermiac <br /> structural stnbility). <br /> Triok Yipe My p:�rt oCk�nk/pip� is lwnt uut oCahnpe more Tank/pipe repaiced or <br /> }SenL Out thnn 10%o!ils design ahape.(I[eviow mquin�d by roplaced to Jeaign. <br /> of Shnpe engineer W delerminr.eLnaKurul sLnUility). <br /> Vnult Crncks wider thnn 1/'l�inch and any evidence oC Vnult repinced or repni[ed <br /> SLrucl.un• :.oil pnrticles entering[lu etrucWrc througl�the W deeign xpe�cntions <br /> hicludes cracks,or maintennnce/inepcetion perfnmiol and ie ntructurully sound. <br /> Crncke in delermines thnt Lhe vnult is not etrncturally <br /> Wall. suimd. <br /> I3ottum, <br /> Damnge to <br /> Grnmc <br /> andlor Tnp <br /> SL�b <br /> �- _� <br /> Crncks widcr Lhan 1/'L-incli ut lhe jouri uf any No cracks morc Chan 1/9- <br />�'���;`� inleUuutlet pipe or:my evi<Ienco o(soil purticles inch wide at the joint uf <br /> ent.�ring lhe vault thruugh Lhe widls. the inledouUct pipe. <br />� n.>",1f <br /> �����;,,;7 Mun6ole Cover Nut Cover is miasing or unly E�nrtinlly in place.Any Manhole ia ela3ed. <br /> ' �c'� in Ylnce open manLole reyuifes me�in[enun�. <br /> "°�� I�ekinK M�v�haniem cannoL l�u�ened Ly one mainG�nancr. Mechucusm openn wiLh <br /> � Mechanls person with pmper touls. 12o1Ls iuU�Crnme have pmper tWls. <br /> m Not lcay than V'L inch oC thccad(muy not apply to xIL <br /> Wnrking locking lids). _ i <br /> � + Cover One rtuiinlennnce person cnnnnt remuve Gd nRer Cover cnn be removed:in�� I ���� <br /> ' Dilficult[o opplV�ng nonnnl li(ting prcav��m. In[ent is fu minatnlled Ly one � < < y�; <br /> k�S,e � fiemove keep rnver from aealing nR aaxas W vu�inieimnce. inain�eeinnce Fx�rson. , <br />"'� , Lndder la�der ia unsufc d�e to miaving rungs, Laddcr meels design � � �'� <br />� . Rungs mis�di�,mment,not securely nttnched to et.ructure sWndnrila.Allows <br /> i � <br /> '"-� Unstde wall,rust,or crackv. mtinLnance person snfe � ' <br /> Y4 \ <br /> u ' :IIX%'SV. .��.. <br /> ki.�' .._�._.._.�_ .._�..... .�__�•_—_.�.�.—__._.�.�.....���..ae_....�..........�.�.e._... e..��,.� �.�..,.e._�:-.��.r....—. .. <br /> s .�I .� ..�. ...�� . <br /> „�u�f� <br /> 1 <br /> T : <br />♦��� <br />'-0.t^'�{���'y� Februdry 2005 Volume lll—Hydrologi�;Analysis.md Rov;Control�A4Ps 3-43 <br /> , , , <br /> :;�;�e; <br /> ;;�;,, <br /> ^`C i <br />�.e� � �� <br /> i � ' .T_ <br /> .. .. ._'_ —_ <br />� �._ . . .w. . K ' N+' �. . .I'-� <br /> � �`�F ,+.q�.�`nt � y'a�v�1++,'� 'r' JT�r.4� �'K"• -�L� <br /> p` K - �. �: _ . ""...�,.. . r,��� fi�^��'�"�+� t # � <br /> Y` --�y <br /> 0 <br /> ;: ,:$ � ��.' � b . ,� �� . ��.. � � "�,�y� ����h�+8't <br /> r <br />� �iueta���_ R����.i�R�,��GStE�:�4,�'�:t,'�•. _._ �'`'i � -`� ' �y,+� y <br />